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27 March 2024, 02:37:15 UTC
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fbf50f4 Sven Schnelle 25 June 2021, 13:06:06 UTC s390/signal: remove sigreturn on stack {rt_}sigreturn is now called from the vdso, so we no longer need the svc on the stack, and therefore no hack to support that mechanism on machines with non-executable stack. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 20:12:17 UTC
df29a74 Sven Schnelle 25 June 2021, 13:02:08 UTC s390/signal: switch to using vdso for sigreturn and syscall restart with generic entry, there's a bug when it comes to restarting of signals. The failing sequence is: a) a signal is coming in, and no handler is registered, so the lower part of arch_do_signal_or_restart() in arch/s390/kernel/signal.c sets PIF_SYSCALL_RESTART. b) a second signal gets pending while the kernel is still in the exit loop, and for that one, a handler exists. c) The first part of arch_do_signal_or_restart() is called. That part calls handle_signal(), which sets up stack + registers for handling the signal. d) __do_syscall() in arch/s390/kernel/syscall.c checks for PIF_SYSCALL_RESTART right before leaving to userspace. If it is set, it restart's the syscall. However, the registers are already setup for handling a signal from c). The syscall is now restarted with the wrong arguments. Change the code to: - use vdso for syscall_restart() instead of PIF_SYSCALL_RESTART because we cannot rewind and go back to userspace on s390 because the system call number might be encoded in the svc instruction. - for all other syscalls we rewind the PSW and return to userspace. Cc: <stable@kernel.org> # v5.12+ d57778feb987: s390/vdso: always enable vdso Cc: <stable@kernel.org> # v5.12+ 686341f2548b: s390/vdso64: add sigreturn,rt_sigreturn and restart_syscall Cc: <stable@kernel.org> # v5.12+ 43e1f76b0b69: s390/vdso: rename VDSO64_LBASE to VDSO_LBASE Cc: <stable@kernel.org> # v5.12+ 779df2248739: s390/vdso: add minimal compat vdso Cc: <stable@kernel.org> # v5.12+ Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 20:09:47 UTC
779df22 Sven Schnelle 25 June 2021, 12:50:08 UTC s390/vdso: add minimal compat vdso Add a small vdso for 31 bit compat application that provides trampolines for calls to sigreturn,rt_sigreturn,syscall_restart. This is requird for moving these syscalls away from the signal frame to the vdso. Note that this patch effectively disables CONFIG_COMPAT when using clang to compile the kernel. clang doesn't support 31 bit mode. We want to redirect sigreturn and restart_syscall to the vdso. However, the kernel cannot parse the ELF vdso file, so we need to generate header files which contain the offsets of the syscall instructions in the vdso page. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 13:37:28 UTC
43e1f76 Sven Schnelle 25 June 2021, 13:10:35 UTC s390/vdso: rename VDSO64_LBASE to VDSO_LBASE Will be used by both vdso32 and vdso64, so change the name. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 13:37:28 UTC
686341f Sven Schnelle 25 June 2021, 12:48:28 UTC s390/vdso64: add sigreturn,rt_sigreturn and restart_syscall Add minimalistic trampolines to vdso64 so we can return from signal without using the stack which requires pgm check handler hacks when NX is enabled. restart_syscall will be called from vdso to work around the architectural limitation that the syscall number might be encoded in the svc instruction, and therefore can not be changed. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 13:37:28 UTC
d57778f Sven Schnelle 23 June 2021, 12:10:00 UTC s390/vdso: always enable vdso With the upcoming move of the svc sigreturn instruction from the signal frame to vdso we need to have vdso always enabled. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 13:37:28 UTC
b9639b3 Heiko Carstens 05 July 2021, 10:06:55 UTC s390/ap: get rid of register asm Using register asm statements has been proven to be very error prone, especially when using code instrumentation where gcc may add function calls, which clobbers register contents in an unexpected way. Therefore get rid of register asm statements in ap code. There are also potential bugs, depending on inline decisions of the compiler. E.g. for: static inline struct ap_queue_status ap_tapq(ap_qid_t qid, unsigned long *info) { register unsigned long reg0 asm ("0") = qid; register struct ap_queue_status reg1 asm ("1"); register unsigned long reg2 asm ("2"); asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */ : "=d" (reg1), "=d" (reg2) : "d" (reg0) : "cc"); if (info) *info = reg2; return reg1; } In case of KCOV the "if (info)" line could cause a generated function call, which could clobber the contents of both reg2, and reg1. Similar can happen in case of KASAN for the "*info = reg2" line. Even though compilers will likely inline the function and optimize things away, this is not guaranteed. To get rid of this bug class, simply get rid of register asm constructs. Note: The inline function ap_dqap() will be handled in a separate patch because this one requires an addressing of the odd register of a register pair (which is done with %N[xxx] in the assembler code) and that's currently not supported by clang. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 13:37:27 UTC
0aa4ff7 Sven Schnelle 06 July 2021, 18:24:58 UTC s390/irq: remove HAVE_IRQ_EXIT_ON_IRQ_STACK This is no longer true since we switched to generic entry. The code switches to the IRQ stack before calling do_IRQ, but switches back to the kernel stack before calling irq_exit(). Fixes: 56e62a737028 ("s390: convert to generic entry") Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 13:37:27 UTC
b8e9cc2 Ilya Leoshkevich 02 July 2021, 13:54:55 UTC s390/traps: do not test MONITOR CALL without CONFIG_BUG tinyconfig fails to boot, because without CONFIG_BUG report_bug() always returns BUG_TRAP_TYPE_BUG, which causes mc 0,0 in test_monitor_call() to panic. Fix by skipping the test without CONFIG_BUG. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 13:37:27 UTC
1f0d22d Harald Freudenberger 30 June 2021, 14:10:56 UTC s390/ap: Rework ap_dqap to deal with messages greater than recv buffer Rework of the ap_dqap() inline function with the dqap inline assembler invocation and the caller code in ap_queue.c to be able to handle replies which exceed the receive buffer size. ap_dqap() now provides two additional parameters to handle together with the caller the case where a reply in the firmware queue entry exceeds the given message buffer size. It depends on the caller how to exactly handle this. The behavior implemented now by ap_sm_recv() in ap_queue.c is to simple purge this entry from the firmware queue and let the caller 'receive' a -EMSGSIZE for the request without delivering any reply data - not even a truncated reply message. However, the reworked ap_dqap() could now get invoked in a way that the message is received in multiple parts and the caller assembles the parts into one reply message. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Suggested-by: Juergen Christ <jchrist@linux.ibm.com> Reviewed-by: Juergen Christ <jchrist@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 08 July 2021, 13:37:27 UTC
bd39654 Harald Freudenberger 25 June 2021, 10:29:46 UTC s390/AP: support new dynamic AP bus size limit This patch provides support for new dynamic AP bus message limit with the existing zcrypt device driver and AP bus core code. There is support for a new field 'ml' from TAPQ query. The field gives if != 0 the AP bus limit for this card in 4k chunk units. The actual message size limit per card is shown as a new read-only sysfs attribute. The sysfs attribute /sys/devices/ap/cardxx/max_msg_size shows the upper limit in bytes used by the AP bus and zcrypt device driver for requests and replies send to and received from this card. Currently up to CEX7 support only max 12kB msg size and thus the field shows 12288 meaning the upper limit of a valid msg for this card is 12kB. Please note that the usable payload is somewhat lower and depends on the msg type and thus the header struct which is to be prepended by the zcrypt dd. The dispatcher responsible for choosing the right card and queue is aware of the individual card AP bus message limit. So a request is only assigned to a queue of a card which is able to handle the size of the request (e.g. a 14kB request will never go to a max 12kB card). If no such card is found the ioctl will fail with ENODEV. The reply buffer held by the device driver is determined by the ml field of the TAPQ for this card. If a response from the card exceeds this limit however, the response is not truncated but the ioctl for this request will fail with errno EMSGSIZE to indicate that the device driver has dropped the response because it would overflow the buffer limit. If the request size does not indicate to the dispatcher that an adapter with extended limit is to be used, a random card will be chosen when no specific card is addressed (ANY addressing). This may result in an ioctl failure when the reply size needs an adapter with extended limit but the randomly chosen one is not capable of handling the broader reply size. The user space application needs to use dedicated addressing to forward such a request only to suitable cards to get requests like this processed properly. Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Reviewed-by: Ingo Tuchscherer <ingo.tuchscherer@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
a0ae5cd Heiko Carstens 01 July 2021, 10:28:48 UTC s390/lib,string: fix strcat() inline asm constraint modifier "dummy" is not only used as output but also as input. Therefore use the correct "+" constraint modifier. Fixes: 8cf23c8e1fec ("s390/lib,string: get rid of register asm") Reported-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
a029a4e Thomas Richter 25 June 2021, 13:17:01 UTC s390/cpumf: Allow concurrent access for CPU Measurement Counter Facility Commit cf6acb8bdb1d ("s390/cpumf: Add support for complete counter set extraction") allows access to the CPU Measurement Counter Facility via character device /dev/hwctr. The access was exclusive via this device or via perf_event_open() system call. Only one path at a time was permitted. The CPU Measurement Counter Facility device driver blocked access to other processes. This patch removes this restriction and allows concurrent access to the CPU Measurement Counter Facility from multiple processes at the same time via perf_event_open() SVC and via /dev/hwctr device. The access via /dev/hwctr device is still exclusive, only one process is allowed to access this device. This patch - moves the /dev/hwctr device access from file perf_cpum_cf_diag.c. to file perf_cpum_cf.c. - use only one trace buffer .../s390dbf/cpum_cf. - remove cfset_csd structure and includes its members it into the structure cpu_cf_events. This results in one data structure and simplifies the access. - rework function familiy ctr_set_enable, ctr_set_disable, ctr_set_start and ctr_set_stop which operate on a counter set number. Now they operate on a counter set bit mask. - move CF_DIAG event functionality to file perf_cpum_cf.c. It now contains the complete functionality of the CPU Measurement Counter Facility: - Performance measurement support for counters using perf stat. - Support for complete counter set extraction with device /dev/hwctr. - Support for counter set extraction event CF_DIAG attached to samples using perf record. - removes file perf_cpum_cf_diag.c Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Sumanth Korikkar <sumanthk@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
5fa2ea0 Alexander Gordeev 18 June 2021, 06:17:18 UTC s390/mcck: move register validation to C code This update partially reverts commit 3037a52f9846 ("s390/nmi: do register validation as early as possible"). Storage error checks and control registers validation are left in the assembler code, since correct ASCEs and page tables are required to enable DAT - which is done before the C handler is entered. System damage, kernel instruction address and PSW MWP checks are left in the assembler code as well, since there is no way to proceed if one of these checks is failed. The getcpu vdso syscall reads CPU number from the programmable field of the TOD clock. Disregard the TOD programmable register validity bit and load the CPU number into the TOD programmable field unconditionally. Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
9f744ab Alexander Egorenkov 25 March 2021, 11:10:56 UTC s390/boot: replace magic string check with a bootdata flag The magic string "S390EP" at offset 0x10008 indicated to the decompressed kernel that it was booted by the decompressor. Introduce a new bootdata flag instead which conveys the same information in an explicit and a cleaner way. But keep the magic string because it is a kernel ABI. Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
549abb7 Alexander Gordeev 18 June 2021, 06:17:17 UTC s390/mcck: keep machine check interruption codes sorted This update puts in order MCCK_CODE_CPU_TIMER_VALID code definition. Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
d35925b Alexander Gordeev 18 June 2021, 06:17:16 UTC s390/mcck: move storage error checks to assembler The current storage errors tackling is wrong - the DAT is enabled in assembler code before the actual storage checks in C half are executed. In case the page tables themselves are damaged such approach is not going to work. With this update unrecoverable storage errors are not passed to C code for handling, but rather the machine is stopped right away. The only exception to this flow is when a machine check occurred in KVM guest - in this case the errors are reinjected by the handler. Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
7f6dc8d Alexander Gordeev 18 June 2021, 06:17:15 UTC s390/mcck: always enter C handler with DAT enabled The machine check handler must be entered with DAT disabled in case control registers are corrupted or a storage error happened and we can not tell if such error corresponds to a page table. Both of described conditions end up in stopping all CPUs and entering the disabled wait in C half of the handler. However, the storage errors are still checked after the DAT is enabled and C code is entered. In case a page table is damaged such flow is not expected to work. This update paves the way for moving the storage error checks from C to assembler half. All fatal errors that can only be handled with DAT disabled are handled in assembler half also. As result, the C half is only entered if the DAT is secured. Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
e2c13d6 Alexander Gordeev 22 June 2021, 17:06:18 UTC s390/mcck: optimize user mode check in case of !CONFIG_KVM In case of the !CONFIG_KVM use "jz" instead of "jnz" when detecting user mode and get rid of unnecessary jump as result. Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Christia Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
fbbdfca Alexander Gordeev 18 June 2021, 06:17:13 UTC s390/entry.S: factor out SIEEXIT macro Factor out SIEEXIT macro and use it instead of cleanup_sie routine. As a side effect %r13 and %r14 are spared. Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> Reviewed-by: Christia Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
07f3a35 Heiko Carstens 28 June 2021, 21:55:53 UTC s390/lib,uaccess: fix copy_in_user_mvcos() inline asm clobber list General register 0 is clobbered within the inline assembly and therefore must be listed in the clobber list. Fixes: d1e18efa8fa9 ("s390/lib,uaccess: get rid of register asm") Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
85b18d7 Janosch Frank 12 January 2021, 10:40:53 UTC s390: mm: Fix secure storage access exception handling Turns out that the bit 61 in the TEID is not always 1 and if that's the case the address space ID and the address are unpredictable. Without an address and its address space ID we can't export memory and hence we can only send a SIGSEGV to the process or panic the kernel depending on who caused the exception. Unfortunately bit 61 is only reliable if we have the "misc" UV feature bit. Signed-off-by: Janosch Frank <frankja@linux.ibm.com> Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> Fixes: 084ea4d611a3d ("s390/mm: add (non)secure page access exceptions handlers") Cc: stable@vger.kernel.org Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
47f7c6c Kefeng Wang 26 June 2021, 07:34:37 UTC s390/kprobes: use is_kernel() helper Use is_kernel() helper instead of is_kernel_addr(). [hca@linux.ibm.com: add missing unsigned long cast] Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> 05 July 2021, 10:44:23 UTC
2bb919b Linus Torvalds 04 July 2021, 19:17:38 UTC Merge tag 's390-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Vasily Gorbik: - Rework inline asm to get rid of error prone "register asm" constructs, which are problematic especially when code instrumentation is enabled. In particular introduce and use register pair union to allocate even/odd register pairs. Unfortunately this breaks compatibility with older clang compilers and minimum clang version for s390 has been raised to 13. https://lore.kernel.org/linux-next/CAK7LNARuSmPCEy-ak0erPrPTgZdGVypBROFhtw+=3spoGoYsyw@mail.gmail.com/ - Fix gcc 11 warnings, which triggered various minor reworks all over the code. - Add zstd kernel image compression support. - Rework boot CPU lowcore handling. - De-duplicate and move kernel memory layout setup logic earlier. - Few fixes in preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for mem functions. - Remove broken and unused power management support leftovers in s390 drivers. - Disable stack-protector for decompressor and purgatory to fix buildroot build. - Fix vt220 sclp console name to match the char device name. - Enable HAVE_IOREMAP_PROT and add zpci_set_irq()/zpci_clear_irq() in zPCI code. - Remove some implausible WARN_ON_ONCEs and remove arch specific counter transaction call backs in favour of default transaction handling in perf code. - Extend/add new uevents for online/config/mode state changes of AP card / queue device in zcrypt. - Minor entry and ccwgroup code improvements. - Other small various fixes and improvements all over the code. * tag 's390-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (91 commits) s390/dasd: use register pair instead of register asm s390/qdio: get rid of register asm s390/ioasm: use symbolic names for asm operands s390/ioasm: get rid of register asm s390/cmf: get rid of register asm s390/lib,string: get rid of register asm s390/lib,uaccess: get rid of register asm s390/string: get rid of register asm s390/cmpxchg: use register pair instead of register asm s390/mm,pages-states: get rid of register asm s390/lib,xor: get rid of register asm s390/timex: get rid of register asm s390/hypfs: use register pair instead of register asm s390/zcrypt: Switch to flexible array member s390/speculation: Use statically initialized const for instructions virtio/s390: get rid of open-coded kvm hypercall s390/pci: add zpci_set_irq()/zpci_clear_irq() scripts/min-tool-version.sh: Raise minimum clang version to 13.0.0 for s390 s390/ipl: use register pair instead of register asm s390/mem_detect: fix tprot() program check new psw handling ... 04 July 2021, 19:17:38 UTC
0d4d4c6 Linus Torvalds 04 July 2021, 19:07:54 UTC Merge tag 'csky-for-linus-5.14-rc1' of git://github.com/c-sky/csky-linux Pull arch/csky updates from Guo Ren: "A small cleanup and a fixup" * tag 'csky-for-linus-5.14-rc1' of git://github.com/c-sky/csky-linux: csky: Kconfig: Remove unused selects csky: syscache: Fixup duplicate cache flush 04 July 2021, 19:07:54 UTC
0c66a95 Linus Torvalds 04 July 2021, 18:55:13 UTC Merge tag 'cxl-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull CXL (Compute Express Link) updates from Dan Williams: "This subsystem is still in the build-out phase as the bulk of the update is improvements to enumeration and fleshing out the device model. In terms of new features, more mailbox commands have been added to the allowed-list in support of persistent memory provisioning support targeting v5.15. The critical update from an enumeration perspective is support for the CXL Fixed Memory Window Structure that indicates to Linux which system physical address ranges decode to the CXL Host Bridges in the system. This allows the driver to detect which address ranges have been mapped by firmware and what address ranges are available for future hotplug. So, again, mostly skeleton this round, with more meat targeting v5.15. Summary: - Add support for the CXL Fixed Memory Window Structure, a recent extension of the ACPI CEDT (CXL Early Discovery Table) - Add infrastructure for component registers - Add HDM (Host-managed device memory) decoder definitions - Define a device model for an HDM decoder tree - Bridge CXL persistent memory capabilities to an NVDIMM bus / device-model - Switch to fine grained mapping of CXL MMIO registers to allow different drivers / system software to own individual register blocks - Enable media provisioning commands, and publish the label storage area size in sysfs - Miscellaneous cleanups and fixes" * tag 'cxl-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (34 commits) cxl/pci: Rename CXL REGLOC ID cxl/acpi: Use the ACPI CFMWS to create static decoder objects cxl/acpi: Add the Host Bridge base address to CXL port objects cxl/pmem: Register 'pmem' / cxl_nvdimm devices libnvdimm: Drop unused device power management support libnvdimm: Export nvdimm shutdown helper, nvdimm_delete() cxl/pmem: Add initial infrastructure for pmem support cxl/core: Add cxl-bus driver infrastructure cxl/pci: Add media provisioning required commands cxl/component_regs: Fix offset cxl/hdm: Fix decoder count calculation cxl/acpi: Introduce cxl_decoder objects cxl/acpi: Enumerate host bridge root ports cxl/acpi: Add downstream port data to cxl_port instances cxl/Kconfig: Default drivers to CONFIG_CXL_BUS cxl/acpi: Introduce the root of a cxl_port topology cxl/pci: Fixup devm_cxl_iomap_block() to take a 'struct device *' cxl/pci: Add HDM decoder capabilities cxl/pci: Reserve individual register block regions cxl/pci: Map registers based on capabilities ... 04 July 2021, 18:55:13 UTC
855ff90 Linus Torvalds 04 July 2021, 18:47:18 UTC Merge branch 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - core supports now bus regulators controlling power for SCL/SDA - quite some DT binding conversions to YAML - added a seperate DT binding for the optional SMBus Alert feature - documentation with examples how to deal with I2C sysfs files - some bigger rework for the i801 driver - and a few usual driver updates * 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (42 commits) i2c: ali1535: mention that the device should not be disabled i2c: mpc: Restore reread of I2C status register i2c: core-smbus: Expose PEC calculate function for generic use Documentation: i2c: Add doc for I2C sysfs i2c: core: Disable client irq on reboot/shutdown dt-bindings: i2c: update bindings for MT8195 SoC i2c: imx: Fix some checkpatch warnings i2c: davinci: Simplify with dev_err_probe() i2c: cadence: Simplify with dev_err_probe() i2c: xiic: Simplify with dev_err_probe() i2c: cadence: Clear HOLD bit before xfer_size register rolls over dt-bindings: i2c: ce4100: Replace "ti,pcf8575" by "nxp,pcf8575" i2c: i801: Improve i801_setup_hstcfg i2c: i801: Use driver name constant instead of function dev_driver_string i2c: i801: Simplify initialization of i2c_board_info in i801_probe_optional_slaves i2c: i801: Improve status polling i2c: cht-wc: Replace of_node by NULL i2c: riic: Add RZ/G2L support dt-bindings: i2c: renesas,riic: Document RZ/G2L I2C controller dt-bindings: i2c: renesas,iic: Convert to json-schema ... 04 July 2021, 18:47:18 UTC
d2500a0 Martin K. Petersen 03 July 2021, 15:58:33 UTC scsi: blkcg: Fix application ID config options Commit d2bcbeab4200 ("scsi: blkcg: Add app identifier support for blkcg") introduced an FC_APPID config option under SCSI. However, the added config option is not used anywhere. Simply remove it. The block layer BLK_CGROUP_FC_APPID config option is what actually controls whether the application ID code should be built or not. Make this option dependent on NVMe over FC since that is currently the only transport which supports the capability. Fixes: d2bcbeab4200 ("scsi: blkcg: Add app identifier support for blkcg") Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 04 July 2021, 18:44:22 UTC
90dc8c0 Guo Ren 12 May 2021, 07:58:41 UTC csky: Kconfig: Remove unused selects - GENERIC_ALLOCATOR is duplicated - Remove USB_ARCH_HAS_OHCI & USB_ARCH_HAS_EHCI, because they have been removed from linux. Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Cc: Arnd Bergmann <arnd@arndb.de> 04 July 2021, 09:39:54 UTC
6ea42c8 Guo Ren 04 May 2021, 06:08:44 UTC csky: syscache: Fixup duplicate cache flush The current csky logic of sys_cacheflush is wrong, it'll cause icache flush call dcache flush again. Now fixup it with a conditional "break & fallthrough". Fixes: 997153b9a75c ("csky: Add flush_icache_mm to defer flush icache all") Fixes: 0679d29d3e23 ("csky: fix syscache.c fallthrough warning") Acked-by: Randy Dunlap <rdunlap@infradead.org> Co-Developed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Cc: Arnd Bergmann <arnd@arndb.de> 04 July 2021, 09:39:54 UTC
303392f Linus Torvalds 03 July 2021, 18:57:42 UTC Merge tag 'leds-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds Pull LED updates from Pavel Machek: "This contains quite a lot of fixes, with more fixes in my inbox that did not make it (sorry)" * tag 'leds-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/pavel/linux-leds: (36 commits) leds: lgm: Fix up includes leds: ktd2692: Fix an error handling path leds: as3645a: Fix error return code in as3645a_parse_node() leds: turris-omnia: add missing MODULE_DEVICE_TABLE leds: lp55xx: Initialize enable GPIO direction to output leds: lm36274: Add missed property.h leds: el15203000: Make error handling more robust leds: pwm: Make error handling more robust leds: lt3593: Make use of device properties leds: lp50xx: Put fwnode in error case during ->probe() leds: lm3697: Don't spam logs when probe is deferred leds: lm3692x: Put fwnode in any case during ->probe() leds: lm36274: Correct headers (of*.h -> mod_devicetable.h) leds: lm36274: Put fwnode in error case during ->probe() leds: lm3532: Make error handling more robust leds: lm3532: select regmap I2C API leds: lgm-sso: Drop duplicate NULL check for GPIO operations leds: lgm-sso: Remove unneeded of_match_ptr() leds: lgm-sso: Fix clock handling leds: el15203000: Introduce to_el15203000_led() helper ... 03 July 2021, 18:57:42 UTC
8e8d944 Linus Torvalds 03 July 2021, 18:49:33 UTC Merge tag 'vfio-v5.14-rc1' of git://github.com/awilliam/linux-vfio Pull VFIO updates from Alex Williamson: - Module reference fixes, structure renaming (Max Gurtovoy) - Export and use common pci_dev_trylock() (Luis Chamberlain) - Enable direct mdev device creation and probing by parent (Christoph Hellwig & Jason Gunthorpe) - Fix mdpy error path leak (Colin Ian King) - Fix mtty list entry leak (Jason Gunthorpe) - Enforce mtty device limit (Alex Williamson) - Resolve concurrent vfio-pci mmap faults (Alex Williamson) * tag 'vfio-v5.14-rc1' of git://github.com/awilliam/linux-vfio: vfio/pci: Handle concurrent vma faults vfio/mtty: Enforce available_instances vfio/mtty: Delete mdev_devices_list vfio: use the new pci_dev_trylock() helper to simplify try lock PCI: Export pci_dev_trylock() and pci_dev_unlock() vfio/mdpy: Fix memory leak of object mdev_state->vconfig vfio/iommu_type1: rename vfio_group struck to vfio_iommu_group vfio/mbochs: Convert to use vfio_register_group_dev() vfio/mdpy: Convert to use vfio_register_group_dev() vfio/mtty: Convert to use vfio_register_group_dev() vfio/mdev: Allow the mdev_parent_ops to specify the device driver to bind vfio/mdev: Remove CONFIG_VFIO_MDEV_DEVICE driver core: Export device_driver_attach() driver core: Don't return EPROBE_DEFER to userspace during sysfs bind driver core: Flow the return code from ->probe() through to sysfs bind driver core: Better distinguish probe errors in really_probe driver core: Pull required checks into driver_probe_device() vfio/platform: remove unneeded parent_module attribute vfio: centralize module refcount in subsystem layer 03 July 2021, 18:49:33 UTC
58ec905 Linus Torvalds 03 July 2021, 18:41:14 UTC Merge branch 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs name lookup updates from Al Viro: "Small namei.c patch series, mostly to simplify the rules for nameidata state. It's actually from the previous cycle - but I didn't post it for review in time... Changes visible outside of fs/namei.c: file_open_root() calling conventions change, some freed bits in LOOKUP_... space" * 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: namei: make sure nd->depth is always valid teach set_nameidata() to handle setting the root as well take LOOKUP_{ROOT,ROOT_GRABBED,JUMPED} out of LOOKUP_... space switch file_open_root() to struct path 03 July 2021, 18:41:14 UTC
d3acb15 Linus Torvalds 03 July 2021, 18:30:04 UTC Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull iov_iter updates from Al Viro: "iov_iter cleanups and fixes. There are followups, but this is what had sat in -next this cycle. IMO the macro forest in there became much thinner and easier to follow..." * 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (37 commits) csum_and_copy_to_pipe_iter(): leave handling of csum_state to caller clean up copy_mc_pipe_to_iter() pipe_zero(): we don't need no stinkin' kmap_atomic()... iov_iter: clean csum_and_copy_...() primitives up a bit copy_page_from_iter(): don't need kmap_atomic() for kvec/bvec cases copy_page_to_iter(): don't bother with kmap_atomic() for bvec/kvec cases iterate_xarray(): only of the first iteration we might get offset != 0 pull handling of ->iov_offset into iterate_{iovec,bvec,xarray} iov_iter: make iterator callbacks use base and len instead of iovec iov_iter: make the amount already copied available to iterator callbacks iov_iter: get rid of separate bvec and xarray callbacks iov_iter: teach iterate_{bvec,xarray}() about possible short copies iterate_bvec(): expand bvec.h macro forest, massage a bit iov_iter: unify iterate_iovec and iterate_kvec iov_iter: massage iterate_iovec and iterate_kvec to logics similar to iterate_bvec iterate_and_advance(): get rid of magic in case when n is 0 csum_and_copy_to_iter(): massage into form closer to csum_and_copy_from_iter() iov_iter: replace iov_iter_copy_from_user_atomic() with iterator-advancing variant [xarray] iov_iter_npages(): just use DIV_ROUND_UP() iov_iter_npages(): don't bother with iterate_all_kinds() ... 03 July 2021, 18:30:04 UTC
f92a322 Linus Torvalds 03 July 2021, 18:23:40 UTC Merge branch 'work.d_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs d_path() updates from Al Viro: "d_path.c refactoring" * 'work.d_path' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: getcwd(2): clean up error handling d_path: prepend_path() is unlikely to return non-zero d_path: prepend_path(): lift the inner loop into a new helper d_path: prepend_path(): lift resetting b in case when we'd return 3 out of loop d_path: prepend_path(): get rid of vfsmnt d_path: introduce struct prepend_buffer d_path: make prepend_name() boolean d_path: lift -ENAMETOOLONG handling into callers of prepend_path() d_path: don't bother with return value of prepend() getcwd(2): saner logics around prepend_path() call d_path: get rid of path_with_deleted() d_path: regularize handling of root dentry in __dentry_path() d_path: saner calling conventions for __dentry_path() d_path: "\0" is {0,0}, not {0} 03 July 2021, 18:23:40 UTC
757fa80 Linus Torvalds 03 July 2021, 18:13:22 UTC Merge tag 'trace-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: - Added option for per CPU threads to the hwlat tracer - Have hwlat tracer handle hotplug CPUs - New tracer: osnoise, that detects latency caused by interrupts, softirqs and scheduling of other tasks. - Added timerlat tracer that creates a thread and measures in detail what sources of latency it has for wake ups. - Removed the "success" field of the sched_wakeup trace event. This has been hardcoded as "1" since 2015, no tooling should be looking at it now. If one exists, we can revert this commit, fix that tool and try to remove it again in the future. - tgid mapping fixed to handle more than PID_MAX_DEFAULT pids/tgids. - New boot command line option "tp_printk_stop", as tp_printk causes trace events to write to console. When user space starts, this can easily live lock the system. Having a boot option to stop just after boot up is useful to prevent that from happening. - Have ftrace_dump_on_oops boot command line option take numbers that match the numbers shown in /proc/sys/kernel/ftrace_dump_on_oops. - Bootconfig clean ups, fixes and enhancements. - New ktest script that tests bootconfig options. - Add tracepoint_probe_register_may_exist() to register a tracepoint without triggering a WARN*() if it already exists. BPF has a path from user space that can do this. All other paths are considered a bug. - Small clean ups and fixes * tag 'trace-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (49 commits) tracing: Resize tgid_map to pid_max, not PID_MAX_DEFAULT tracing: Simplify & fix saved_tgids logic treewide: Add missing semicolons to __assign_str uses tracing: Change variable type as bool for clean-up trace/timerlat: Fix indentation on timerlat_main() trace/osnoise: Make 'noise' variable s64 in run_osnoise() tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing tracing: Fix spelling in osnoise tracer "interferences" -> "interference" Documentation: Fix a typo on trace/osnoise-tracer trace/osnoise: Fix return value on osnoise_init_hotplug_support trace/osnoise: Make interval u64 on osnoise_main trace/osnoise: Fix 'no previous prototype' warnings tracing: Have osnoise_main() add a quiescent state for task rcu seq_buf: Make trace_seq_putmem_hex() support data longer than 8 seq_buf: Fix overflow in seq_buf_putmem_hex() trace/osnoise: Support hotplug operations trace/hwlat: Support hotplug operations trace/hwlat: Protect kdata->kthread with get/put_online_cpus trace: Add timerlat tracer trace: Add osnoise tracer ... 03 July 2021, 18:13:22 UTC
a70bb58 Linus Torvalds 03 July 2021, 17:54:08 UTC Merge tag 'devicetree-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: - Refine reserved memory nomap handling - Merge some PCI and non-PCI address handling implementations - Simplify of_address.h header ifdefs - Improve printk handling of some 64-bit types - Convert adi,adv7511, Arm ccree, Arm SCMI, Arm SCU, Arm TWD timer, Arm VIC, arm,sbsa-gwdt, Arm/Amlogic SCPI, Aspeed I2C, Broadcom iProc PWM, linaro,optee-tz, MDIO GPIO, Mediatek RNG, MTD physmap, NXP pcf8563/pcf85263/pcf85363, Renesas TPU, renesas,emev2-smu, renesas,r9a06g032-sysctrl, sysc-rmobile, Tegra20 EMC, TI AM56 PCI, TI OMAP mailbox, TI SCI bindings, virtio-mmio, Zynq FPGA, and ZynqMP RTC to DT schema - Convert mux and mux controller bindings to schema. This includes MDIO IIO, and I2C muxes. - Add Arm PL031 RTC binding schema - Add vendor prefixes for StarFive Technology Co. Ltd. and Insignal Ltd - Fix some stale doc references - Remove stale property-units.txt. Superseded by schema in dt-schema repo. - Fixes for 'unevaluatedProperties' handling (enabled with experimental json-schema support) - Drop redundant usage of minItems and maxItems across the tree - Update some examples to use bindings with a schema * tag 'devicetree-for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (83 commits) dt-bindings: Fix 'unevaluatedProperties' errors in DT graph users dt-bindings: display: renesas,du: Fix 'ports' reference dt-bindings: media: adv7180: Add missing video-interfaces.yaml reference dt-bindings: crypto: ccree: Convert to json-schema dt-bindings: fpga: zynq: convert bindings to YAML dt-bindings: rtc: zynqmp: convert bindings to YAML dt-bindings: interrupt-controller: Convert ARM VIC to json-schema of: of_reserved_mem: mark nomap memory instead of removing of: of_reserved_mem: only call memblock_free for normal reserved memory dt-bindings: Drop redundant minItems/maxItems dt-bindings: spmi: Correct 'reg' schema of: reserved-memory: Add stub for RESERVEDMEM_OF_DECLARE() dt-bindings: clk: vc5: Fix example dt-bindings: timer: renesas,tmu: add r8a779a0 TMU support dt-bindings: drm: bridge: adi,adv7511.txt: convert to yaml dt-bindings: PCI: ti,am65: Convert PCIe host/endpoint mode dt-bindings to YAML of: Remove superfluous casts when printing u64 values of: Fix truncation of memory sizes on 32-bit platforms dt-bindings: rtc: nxp,pcf8563: Absorb pcf85263/pcf85363 bindings dt-bindings: pwm: Use examples with documented/matching schema ... 03 July 2021, 17:54:08 UTC
4b820e1 Linus Torvalds 03 July 2021, 05:05:52 UTC Revert "ALSA: usb-audio: Reduce latency at playback start" This reverts commit 9ce650a75a3b262c90789b42aedee8fc2ee04d53. This commit causes watchdog lockups on my machine, and while I have no idea what the cause is, it bisected right to this commit, and reverting the change promptly fixes it. At least occasionally one of the watchdog call traces was Call Trace: _raw_spin_lock_irqsave+0x35/0x40 snd_pcm_period_elapsed+0x1b/0xa0 [snd_pcm] snd_usb_endpoint_start+0x1a0/0x3c0 [snd_usb_audio] start_endpoints+0x23/0x90 [snd_usb_audio] snd_usb_substream_playback_trigger+0x7b/0x1a0 [snd_usb_audio] snd_pcm_common_ioctl+0x1c44/0x2360 [snd_pcm] snd_pcm_ioctl+0x2e/0x40 [snd_pcm] __se_sys_ioctl+0x72/0xc0 do_syscall_64+0x4c/0xa0 entry_SYSCALL_64_after_hwframe+0x44/0xae so presumably it's a locking error on that substream spinlock that snd_pcm_period_elapsed() takes. But at this point I just want to have a working system so that I can continue the merge window work tomorrow. Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 03 July 2021, 05:05:52 UTC
d6b63b5 Linus Torvalds 02 July 2021, 22:25:23 UTC Merge tag 'sound-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "As the diffstat scatters over the tree, we've got many tree-wide small changes, but also got quite a few intrusive changes in the core side. The only ABI-visible core change is the new rawmidi framing mode support while others are kernel-internal, mostly code refactoring and/or nice improvements. Here are some highlights: Core: - A new framing access mode for rawmidi to get timestamps - Cleanup / refactoring of buffer memory management helper code - Support for automatic negotiation of ASoC DAI formats - Revival of software suspend for PCM and control core, as a preliminary work for PCI BAR rescan support ASoC: - Accessory detection support for several Qualcomm parts - Support for IEC958 control with hdmi-codec - Merging of Tegra machine drivers into a single driver - Support for AmLogic SM1 TOACODEC, Intel AlderLake-M, several NXP i.MX8 variants, NXP TFA1 and TDF9897, Rockchip RK817, Qualcomm Quinary MI2S, Texas Instruments TAS2505 USB-audio: - Reduction of latency at playback start - Code cleanup / fixes of usx2y driver - Scarlett2 mixer code fixes and enhancements - Quirks for Ozone and Denon devices HD-audio: - A few quirks for HP and ASUS machines - Display power management fixes Others: - FireWire code refactoring and enhancements - Tree-wide trivial coding-style fixes" * tag 'sound-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (594 commits) ALSA: usb-audio: scarlett2: Fix for loop increment in scarlett2_usb_get_config ALSA: hda/realtek: fix mute/micmute LEDs for HP ProBook 630 G8 ALSA: hda/realtek: fix mute/micmute LEDs for HP ProBook 445 G8 ALSA: hda/realtek: fix mute/micmute LEDs for HP ProBook 450 G8 ALSA: hda/realtek - Add ALC285 HP init procedure ALSA: hda/realtek - Add type for ALC287 ALSA: scarlett2: Fix scarlett2_*_ctl_put() return values again ALSA: scarlett2: Fix pad count for 18i8 Gen 3 ALSA: hda/realtek: fix mute/micmute LEDs for HP EliteBook 830 G8 Notebook PC ALSA: firewire-lib: Fix 'amdtp_domain_start()' when no AMDTP_OUT_STREAM stream is found ASoC: qcom: lpass-cpu: mark IRQ_CLEAR register as volatile and readable ALSA: hda: Release codec display power during shutdown/reboot ALSA: hda: Release controller display power during shutdown/reboot ALSA: hda/realtek: Apply LED fixup for HP Dragonfly G1, too ASoC: fsl: remove unnecessary oom message ASoC: tlv320aic32x4: dt-bindings: add TAS2505 to compatible ASoC: tlv320aic32x4: add support for TAS2505 ASoC: tlv320aic32x4: add type to device private data struct ASoC: tegra30: ahub: Use devm_platform_get_and_ioremap_resource() ASoC: tegra: tegra210_admaif: Use devm_platform_get_and_ioremap_resource() ... 02 July 2021, 22:25:23 UTC
bd31b9e Linus Torvalds 02 July 2021, 22:14:36 UTC Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi Pull SCSI updates from James Bottomley: "This series consists of the usual driver updates (ufs, ibmvfc, megaraid_sas, lpfc, elx, mpi3mr, qedi, iscsi, storvsc, mpt3sas) with elx and mpi3mr being new drivers. The major core change is a rework to drop the status byte handling macros and the old bit shifted definitions and the rest of the updates are minor fixes" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (287 commits) scsi: aha1740: Avoid over-read of sense buffer scsi: arcmsr: Avoid over-read of sense buffer scsi: ips: Avoid over-read of sense buffer scsi: ufs: ufs-mediatek: Add missing of_node_put() in ufs_mtk_probe() scsi: elx: libefc: Fix IRQ restore in efc_domain_dispatch_frame() scsi: elx: libefc: Fix less than zero comparison of a unsigned int scsi: elx: efct: Fix pointer error checking in debugfs init scsi: elx: efct: Fix is_originator return code type scsi: elx: efct: Fix link error for _bad_cmpxchg scsi: elx: efct: Eliminate unnecessary boolean check in efct_hw_command_cancel() scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session() scsi: elx: efct: Fix error handling in efct_hw_init() scsi: elx: efct: Remove redundant initialization of variable lun scsi: elx: efct: Fix spelling mistake "Unexected" -> "Unexpected" scsi: lpfc: Fix build error in lpfc_scsi.c scsi: target: iscsi: Remove redundant continue statement scsi: qla4xxx: Remove redundant continue statement scsi: ppa: Switch to use module_parport_driver() scsi: imm: Switch to use module_parport_driver() scsi: mpt3sas: Fix error return value in _scsih_expander_add() ... 02 July 2021, 22:14:36 UTC
9f7b640 Linus Torvalds 02 July 2021, 21:30:27 UTC Merge tag 'xfs-5.14-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux Pull xfs updates from Darrick Wong: "Most of the work this cycle has been on refactoring various parts of the codebase. The biggest non-cleanup changes are (1) reducing the number of cache flushes sent when writing the log; (2) a substantial number of log recovery fixes; and (3) I started accepting pull requests from contributors if the commits in their branches match what's been sent to the list. For a week or so I /had/ staged a major cleanup of the logging code from Dave Chinner, but it exposed so many lurking bugs in other parts of the logging and log recovery code that I decided to defer that patchset until we can address those latent bugs. Larger cleanups this time include walking the incore inode cache (me) and rework of the extended attribute code (Allison) to prepare it for adding logged xattr updates (and directory tree parent pointers) in future releases. Summary: - Refactor the buffer cache to use bulk page allocation - Convert agnumber-based AG iteration to walk per-AG structures - Clean up some unit conversions and other code warts - Reduce spinlock contention in the directio fastpath - Collapse all the inode cache walks into a single function - Remove indirect function calls from the inode cache walk code - Dramatically reduce the number of cache flushes sent when writing log buffers - Preserve inode sickness reports for longer - Rename xfs_eofblocks since it controls inode cache walks - Refactor the extended attribute code to prepare it for the addition of log intent items to make xattrs fully transactional - A few fixes to earlier large patchsets - Log recovery fixes so that we don't accidentally mark the log clean when log intent recovery fails - Fix some latent SOB errors - Clean up shutdown messages that get logged to dmesg - Fix a regression in the online shrink code - Fix a UAF in the buffer logging code if the fs goes offline - Fix uninitialized error variables - Fix a UAF in the CIL when commited log item callbacks race with a shutdown - Fix a bug where the CIL could hang trying to push part of the log ring buffer that hasn't been filled yet" * tag 'xfs-5.14-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (102 commits) xfs: don't wait on future iclogs when pushing the CIL xfs: Fix a CIL UAF by getting get rid of the iclog callback lock xfs: remove callback dequeue loop from xlog_state_do_iclog_callbacks xfs: don't nest icloglock inside ic_callback_lock xfs: Initialize error in xfs_attr_remove_iter xfs: fix endianness issue in xfs_ag_shrink_space xfs: remove dead stale buf unpin handling code xfs: hold buffer across unpin and potential shutdown processing xfs: force the log offline when log intent item recovery fails xfs: fix log intent recovery ENOSPC shutdowns when inactivating inodes xfs: shorten the shutdown messages to a single line xfs: print name of function causing fs shutdown instead of hex pointer xfs: fix type mismatches in the inode reclaim functions xfs: separate primary inode selection criteria in xfs_iget_cache_hit xfs: refactor the inode recycling code xfs: add iclog state trace events xfs: xfs_log_force_lsn isn't passed a LSN xfs: Fix CIL throttle hang when CIL space used going backwards xfs: journal IO cache flush reductions xfs: remove need_start_rec parameter from xlog_write() ... 02 July 2021, 21:30:27 UTC
e4aa67b Linus Torvalds 02 July 2021, 21:25:17 UTC Merge tag 'jfs-5.14' of git://github.com/kleikamp/linux-shaggy Pull jfs updates from David Kleikamp: "JFS fixes for 5.14" * tag 'jfs-5.14' of git://github.com/kleikamp/linux-shaggy: jfs: Avoid field-overflowing memcpy() jfs: remove unnecessary oom message jfs: fix GPF in diFree fs/jfs: Fix missing error code in lmLogInit() jfs: Remove trailing semicolon in macros fs: Fix typo issue 02 July 2021, 21:25:17 UTC
ced4cca Linus Torvalds 02 July 2021, 21:13:21 UTC Merge tag 'configfs-5.13' of git://git.infradead.org/users/hch/configfs Pull configfs updates from Christoph Hellwig: - fix a memleak in configfs_release_bin_file (Chung-Chiang Cheng) - implement the .read_iter and .write_iter (Bart Van Assche) - minor cleanups (Bart Van Assche, me) * tag 'configfs-5.13' of git://git.infradead.org/users/hch/configfs: configfs: simplify configfs_release_bin_file configfs: fix memleak in configfs_release_bin_file configfs: implement the .read_iter and .write_iter methods configfs: drop pointless kerneldoc comments configfs: fix the kerneldoc comment for configfs_create_bin_file 02 July 2021, 21:13:21 UTC
e72b069 Linus Torvalds 02 July 2021, 20:31:08 UTC Merge tag 'dma-mapping-5.14' of git://git.infradead.org/users/hch/dma-mapping Pull dma-mapping updates from Christoph Hellwig: - a trivivial whitespace fix (Zhen Lei) - report -EEXIST errors in add_dma_entry (Hamza Mahfooz) * tag 'dma-mapping-5.14' of git://git.infradead.org/users/hch/dma-mapping: dma-debug: report -EEXIST errors in add_dma_entry dma-mapping: remove a trailing space 02 July 2021, 20:31:08 UTC
cd3eb7e Linus Torvalds 02 July 2021, 20:22:47 UTC Merge tag 'iommu-updates-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: - SMMU Updates from Will Deacon: - SMMUv3: - Support stalling faults for platform devices - Decrease defaults sizes for the event and PRI queues - SMMUv2: - Support for a new '->probe_finalize' hook, needed by Nvidia - Even more Qualcomm compatible strings - Avoid Adreno TTBR1 quirk for DB820C platform - Intel VT-d updates from Lu Baolu: - Convert Intel IOMMU to use sva_lib helpers in iommu core - ftrace and debugfs supports for page fault handling - Support asynchronous nested capabilities - Various misc cleanups - Support for new VIOT ACPI table to make the VirtIO IOMMU available on x86 - Add the amd_iommu=force_enable command line option to enable the IOMMU on platforms where they are known to cause problems - Support for version 2 of the Rockchip IOMMU - Various smaller fixes, cleanups and refactorings * tag 'iommu-updates-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (66 commits) iommu/virtio: Enable x86 support iommu/dma: Pass address limit rather than size to iommu_setup_dma_ops() ACPI: Add driver for the VIOT table ACPI: Move IOMMU setup code out of IORT ACPI: arm64: Move DMA setup operations out of IORT iommu/vt-d: Fix dereference of pointer info before it is null checked iommu: Update "iommu.strict" documentation iommu/arm-smmu: Check smmu->impl pointer before dereferencing iommu/arm-smmu-v3: Remove unnecessary oom message iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation iommu/arm-smmu: Fix arm_smmu_device refcount leak when arm_smmu_rpm_get fails iommu/vt-d: Fix linker error on 32-bit iommu/vt-d: No need to typecast iommu/vt-d: Define counter explicitly as unsigned int iommu/vt-d: Remove unnecessary braces iommu/vt-d: Removed unused iommu_count in dmar domain iommu/vt-d: Use bitfields for DMAR capabilities iommu/vt-d: Use DEVICE_ATTR_RO macro iommu/vt-d: Fix out-bounds-warning in intel/svm.c iommu/vt-d: Add PRQ handling latency sampling ... 02 July 2021, 20:22:47 UTC
35e4353 Linus Torvalds 02 July 2021, 20:09:15 UTC Merge tag 'linux-kselftest-next-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull Kselftest update from Shuah Khan: "Fixes to existing tests and framework: - migrate sgx test to kselftest harness - add new test cases to sgx test - ftrace test fix event-no-pid on 1-core machine - splice test adjust for handler fallback removal" * tag 'linux-kselftest-next-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/sgx: remove checks for file execute permissions selftests/ftrace: fix event-no-pid on 1-core machine selftests/sgx: Refine the test enclave to have storage selftests/sgx: Add EXPECT_EEXIT() macro selftests/sgx: Dump enclave memory map selftests/sgx: Migrate to kselftest harness selftests/sgx: Rename 'eenter' and 'sgx_call_vdso' selftests: timers: rtcpie: skip test if default RTC device does not exist selftests: lib.mk: Also install "config" and "settings" selftests: splice: Adjust for handler fallback removal selftests/tls: Add {} to avoid static checker warning selftests/resctrl: Fix incorrect parsing of option "-t" 02 July 2021, 20:09:15 UTC
a48ad6e Linus Torvalds 02 July 2021, 19:58:26 UTC Merge tag 'linux-kselftest-kunit-fixes-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull KUnit update from Shuah Khan: "Fixes and features: - add support for skipped tests - introduce kunit_kmalloc_array/kunit_kcalloc() helpers - add gnu_printf specifiers - add kunit_shutdown - add unit test for filtering suites by names - convert lib/test_list_sort.c to use KUnit - code organization moving default config to tools/testing/kunit - refactor of internal parser input handling - cleanups and updates to documentation - code cleanup related to casts" * tag 'linux-kselftest-kunit-fixes-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (29 commits) kunit: add unit test for filtering suites by names kasan: test: make use of kunit_skip() kunit: test: Add example tests which are always skipped kunit: tool: Support skipped tests in kunit_tool kunit: Support skipped tests thunderbolt: test: Reinstate a few casts of bitfields kunit: tool: internal refactor of parser input handling lib/test: convert lib/test_list_sort.c to use KUnit kunit: introduce kunit_kmalloc_array/kunit_kcalloc() helpers kunit: Remove the unused all_tests.config kunit: Move default config from arch/um -> tools/testing/kunit kunit: arch/um/configs: Enable KUNIT_ALL_TESTS by default kunit: Add gnu_printf specifiers lib/cmdline_kunit: Remove a cast which are no-longer required kernel/sysctl-test: Remove some casts which are no-longer required thunderbolt: test: Remove some casts which are no longer required mmc: sdhci-of-aspeed: Remove some unnecessary casts from KUnit tests iio: Remove a cast in iio-test-format which is no longer required device property: Remove some casts in property-entry-test Documentation: kunit: Clean up some string casts in examples ... 02 July 2021, 19:58:26 UTC
019b3fd Linus Torvalds 02 July 2021, 19:54:34 UTC Merge tag 'powerpc-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - A big series refactoring parts of our KVM code, and converting some to C. - Support for ARCH_HAS_SET_MEMORY, and ARCH_HAS_STRICT_MODULE_RWX on some CPUs. - Support for the Microwatt soft-core. - Optimisations to our interrupt return path on 64-bit. - Support for userspace access to the NX GZIP accelerator on PowerVM on Power10. - Enable KUAP and KUEP by default on 32-bit Book3S CPUs. - Other smaller features, fixes & cleanups. Thanks to: Andy Shevchenko, Aneesh Kumar K.V, Arnd Bergmann, Athira Rajeev, Baokun Li, Benjamin Herrenschmidt, Bharata B Rao, Christophe Leroy, Daniel Axtens, Daniel Henrique Barboza, Finn Thain, Geoff Levand, Haren Myneni, Jason Wang, Jiapeng Chong, Joel Stanley, Jordan Niethe, Kajol Jain, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nick Desaulniers, Paul Mackerras, Russell Currey, Sathvika Vasireddy, Shaokun Zhang, Stephen Rothwell, Sudeep Holla, Suraj Jitindar Singh, Tom Rix, Vaibhav Jain, YueHaibing, Zhang Jianhua, and Zhen Lei. * tag 'powerpc-5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (218 commits) powerpc: Only build restart_table.c for 64s powerpc/64s: move ret_from_fork etc above __end_soft_masked powerpc/64s/interrupt: clean up interrupt return labels powerpc/64/interrupt: add missing kprobe annotations on interrupt exit symbols powerpc/64: enable MSR[EE] in irq replay pt_regs powerpc/64s/interrupt: preserve regs->softe for NMI interrupts powerpc/64s: add a table of implicit soft-masked addresses powerpc/64e: remove implicit soft-masking and interrupt exit restart logic powerpc/64e: fix CONFIG_RELOCATABLE build warnings powerpc/64s: fix hash page fault interrupt handler powerpc/4xx: Fix setup_kuep() on SMP powerpc/32s: Fix setup_{kuap/kuep}() on SMP powerpc/interrupt: Use names in check_return_regs_valid() powerpc/interrupt: Also use exit_must_hard_disable() on PPC32 powerpc/sysfs: Replace sizeof(arr)/sizeof(arr[0]) with ARRAY_SIZE powerpc/ptrace: Refactor regs_set_return_{msr/ip} powerpc/ptrace: Move set_return_regs_changed() before regs_set_return_{msr/ip} powerpc/stacktrace: Fix spurious "stale" traces in raise_backtrace_ipi() powerpc/pseries/vas: Include irqdomain.h powerpc: mark local variables around longjmp as volatile ... 02 July 2021, 19:54:34 UTC
4cad671 Linus Torvalds 02 July 2021, 19:43:40 UTC Merge tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm/unaligned.h unification from Arnd Bergmann: "Unify asm/unaligned.h around struct helper The get_unaligned()/put_unaligned() helpers are traditionally architecture specific, with the two main variants being the "access-ok.h" version that assumes unaligned pointer accesses always work on a particular architecture, and the "le-struct.h" version that casts the data to a byte aligned type before dereferencing, for architectures that cannot always do unaligned accesses in hardware. Based on the discussion linked below, it appears that the access-ok version is not realiable on any architecture, but the struct version probably has no downsides. This series changes the code to use the same implementation on all architectures, addressing the few exceptions separately" Link: https://lore.kernel.org/lkml/75d07691-1e4f-741f-9852-38c0b4f520bc@synopsys.com/ Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363 Link: https://lore.kernel.org/lkml/20210507220813.365382-14-arnd@kernel.org/ Link: git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git unaligned-rework-v2 Link: https://lore.kernel.org/lkml/CAHk-=whGObOKruA_bU3aPGZfoDqZM1_9wBkwREp0H0FgR-90uQ@mail.gmail.com/ * tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic: simplify asm/unaligned.h asm-generic: uaccess: 1-byte access is always aligned netpoll: avoid put_unaligned() on single character mwifiex: re-fix for unaligned accesses apparmor: use get_unaligned() only for multi-byte words partitions: msdos: fix one-byte get_unaligned() asm-generic: unaligned always use struct helpers asm-generic: unaligned: remove byteshift helpers powerpc: use linux/unaligned/le_struct.h on LE power7 m68k: select CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS sh: remove unaligned access for sh4a openrisc: always use unaligned-struct header asm-generic: use asm-generic/unaligned.h for most architectures 02 July 2021, 19:43:40 UTC
4062549 Linus Torvalds 02 July 2021, 19:24:31 UTC Merge tag 'perf-tools-for-v5.14-2021-07-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tool updates from Arnaldo Carvalho de Melo: "Tools: - Add cgroup support for 'perf top' (-G). - Add support for KVM MSRs in 'perf kvm stat' - Support probes on init functions in 'perf probe', to support the bootconfig format. - Improve error reporting in 'perf probe'. - No need to synthesize BUILD_ID records in 'perf inject' if the MMAP2 records have build ids already. - Allow toggling source code ('s' hotkey) in 'perf annotate' in all lines. - Add itrace options support to 'perf annotate'. - Support to custom DSO filters for 'perf script'. Hardware enablement: - Support the HYBRID_TOPOLOGY and HYBRID_CPU_PMU_CAPS features in the perf.data file header. - Support PMU prefix for mem-load and mem-store events, to support hybrid (BIG little) CPUs such as Intel's Alderlake. - Support hybrid CPUs in 'perf mem' and 'perf c2c'. Hardware tracing: - Intel PT now supports tracing KVM guests. - Timestamp improvements for ARM's Coresight. Build: - Add 'make -C tools/perf build-test' entries for libopencsd/CORESIGHT=1 and libbpf/LIBBPF_DYNAMIC=1. - Use bison's --file-prefix-map option to avoid storing full paths when using O= in the perf build. Tests: - Improve the 'perf test' entries for libpfm4 and BPF counters. Misc: - Sync msr-index.h, mount.h, kvm headers with the kernel originals. - Add vendor events and metrics for Intel's Icelake Server & Client" * tag 'perf-tools-for-v5.14-2021-07-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (123 commits) perf session: Add missing evlist__delete when deleting a session perf annotate: Allow 's' on source code lines perf dlfilter: Add object_code() to perf_dlfilter_fns perf dlfilter: Add attr() to perf_dlfilter_fns perf dlfilter: Add srcline() to perf_dlfilter_fns perf dlfilter: Add insn() to perf_dlfilter_fns perf dlfilter: Add resolve_address() to perf_dlfilter_fns perf build: Install perf_dlfilter.h perf script: Add option to pass arguments to dlfilters perf script: Add option to list dlfilters perf script: Add dlfilter__filter_event_early() perf script: Add API for filtering via dynamically loaded shared object perf llvm: Return -ENOMEM when asprintf() fails perf cs-etm: Delay decode of non-timeless data until cs_etm__flush_events() tools headers UAPI: Synch KVM's svm.h header with the kernel tools kvm headers arm64: Update KVM headers from the kernel sources tools headers UAPI: Sync linux/kvm.h with the kernel sources tools headers cpufeatures: Sync with the kernel sources tools include UAPI: Update linux/mount.h copy tools arch x86: Sync the msr-index.h copy with the kernel sources ... 02 July 2021, 19:24:31 UTC
71bd934 Linus Torvalds 02 July 2021, 19:08:10 UTC Merge branch 'akpm' (patches from Andrew) Merge more updates from Andrew Morton: "190 patches. Subsystems affected by this patch series: mm (hugetlb, userfaultfd, vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock, migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap, zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc, core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs, signals, exec, kcov, selftests, compress/decompress, and ipc" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits) ipc/util.c: use binary search for max_idx ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock ipc: use kmalloc for msg_queue and shmid_kernel ipc sem: use kvmalloc for sem_undo allocation lib/decompressors: remove set but not used variabled 'level' selftests/vm/pkeys: exercise x86 XSAVE init state selftests/vm/pkeys: refill shadow register after implicit kernel write selftests/vm/pkeys: handle negative sys_pkey_alloc() return code selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random kcov: add __no_sanitize_coverage to fix noinstr for all architectures exec: remove checks in __register_bimfmt() x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned hfsplus: report create_date to kstat.btime hfsplus: remove unnecessary oom message nilfs2: remove redundant continue statement in a while-loop kprobes: remove duplicated strong free_insn_page in x86 and s390 init: print out unknown kernel parameters checkpatch: do not complain about positive return values starting with EPOLL checkpatch: improve the indented label test checkpatch: scripts/spdxcheck.py now requires python3 ... 02 July 2021, 19:08:10 UTC
9d63368 Wolfram Sang 25 June 2021, 15:17:58 UTC i2c: ali1535: mention that the device should not be disabled The comment from the i801 driver is valid here, too, so copy it. Reported-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org> 02 July 2021, 07:14:46 UTC
763778c Chris Packham 02 July 2021, 03:27:24 UTC i2c: mpc: Restore reread of I2C status register Prior to commit 1538d82f4647 ("i2c: mpc: Interrupt driven transfer") the old interrupt handler would reread MPC_I2C_SR after checking the CSR_MIF bit. When the driver was re-written this was removed as it seemed unnecessary. However as it turns out this is necessary for i2c devices which do clock stretching otherwise we end up thinking the bus is still busy when processing the interrupt. Fixes: 1538d82f4647 ("i2c: mpc: Interrupt driven transfer") Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org> 02 July 2021, 07:12:51 UTC
3dbdb38 Linus Torvalds 02 July 2021, 00:22:14 UTC Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - cgroup.kill is added which implements atomic killing of the whole subtree. Down the line, this should be able to replace the multiple userland implementations of "keep killing till empty". - PSI can now be turned off at boot time to avoid overhead for configurations which don't care about PSI. * 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: make per-cgroup pressure stall tracking configurable cgroup: Fix kernel-doc cgroup: inline cgroup_task_freeze() tests/cgroup: test cgroup.kill tests/cgroup: move cg_wait_for(), cg_prepare_for_wait() tests/cgroup: use cgroup.kill in cg_killall() docs/cgroup: add entry for cgroup.kill cgroup: introduce cgroup.kill 02 July 2021, 00:22:14 UTC
e267992 Linus Torvalds 02 July 2021, 00:17:24 UTC Merge branch 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu Pull percpu updates from Dennis Zhou: - percpu chunk depopulation - depopulate backing pages for chunks with empty pages when we exceed a global threshold without those pages. This lets us reclaim a portion of memory that would previously be lost until the full chunk would be freed (possibly never). - memcg accounting cleanup - previously separate chunks were managed for normal allocations and __GFP_ACCOUNT allocations. These are now consolidated which cleans up the code quite a bit. - a few misc clean ups for clang warnings * 'for-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu: percpu: optimize locking in pcpu_balance_workfn() percpu: initialize best_upa variable percpu: rework memcg accounting mm, memcg: introduce mem_cgroup_kmem_disabled() mm, memcg: mark cgroup_memory_nosocket, nokmem and noswap as __ro_after_init percpu: make symbol 'pcpu_free_slot' static percpu: implement partial chunk depopulation percpu: use pcpu_free_slot instead of pcpu_nr_slots - 1 percpu: factor out pcpu_check_block_hint() percpu: split __pcpu_balance_workfn() percpu: fix a comment about the chunks ordering 02 July 2021, 00:17:24 UTC
19b4385 Linus Torvalds 02 July 2021, 00:03:11 UTC Merge tag 'mips_5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from Thomas Bogendoerfer: - add support for OpeneEmbed SOM9331 board - Ingenic fixes/improvments - other fixes and cleanups * tag 'mips_5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (39 commits) MIPS: Fix PKMAP with 32-bit MIPS huge page support MIPS: CI20: Add second percpu timer for SMP. MIPS: CI20: Reduce clocksource to 750 kHz. MIPS: Ingenic: Add MAC syscon nodes for Ingenic SoCs. dt-bindings: clock: Add documentation for MAC PHY control bindings. MIPS: X1830: Respect cell count of common properties. MIPS: set mips32r5 for virt extensions MIPS: loongsoon64: Reserve memory below starting pfn to prevent Oops MIPS: MT extensions are not available on MIPS32r1 mips/kvm: Use BUG_ON instead of if condition followed by BUG MIPS: OCTEON: octeon-usb: Use devm_platform_get_and_ioremap_resource() MIPS: add PMD table accounting into MIPS'pmd_alloc_one MIPS: Loongson64: fix spelling of SPDX tag MIPS: ingenic: rs90: Add dedicated VRAM memory region MIPS: ingenic: gcw0: Set codec to cap-less mode for FM radio MIPS: ingenic: jz4780: Fix I2C nodes to match DT doc MIPS: ingenic: Select CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER MIPS: Kconfig: ingenic: Ensure MACH_INGENIC_GENERIC selects all SoCs MIPS: cpu-probe: Fix FPU detection on Ingenic JZ4760(B) MIPS: boot: Support specifying UART port on Ingenic SoCs ... 02 July 2021, 00:03:11 UTC
a32b344 Linus Torvalds 01 July 2021, 23:57:14 UTC Merge tag 'pinctrl-v5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "This is the bulk of pin control changes for the v5.14 kernel. Not so much going on. No core changes, just drivers. The most interesting would be that MIPS Ralink is migrating to pin control and we have some bindings but not yet code for the Apple M1 pin controller. New drivers: - Last merge window we created a driver for the Ralink RT2880. We are now moving the Ralink SoC pin control drivers out of the MIPS architecture code and into the pin control subsystem. This concerns RT288X, MT7620, RT305X, RT3883 and MT7621. - Qualcomm SM6125 SoC pin control driver. - Qualcomm spmi-gpio support for PM7325. - Qualcomm spmi-mpp also handles PMI8994 (just a compatible string) - Mediatek MT8365 SoC pin controller. - New device HID for the AMD GPIO controller. Improvements: - Pin bias config support for a slew of Renesas pin controllers. - Incremental improvements and non-urgent bug fixes to the Renesas SoC drivers. - Implement irq_set_wake on the AMD pin controller so we can wake up from external pin events. Misc: - Devicetree bindings for the Apple M1 pin controller, we will probably see a proper driver for this soon as well" * tag 'pinctrl-v5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (54 commits) pinctrl: ralink: rt305x: add missing include pinctrl: stm32: check for IRQ MUX validity during alloc() pinctrl: zynqmp: some code cleanups drivers: qcom: pinctrl: Add pinctrl driver for sm6125 dt-bindings: pinctrl: qcom: sm6125: Document SM6125 pinctrl driver dt-bindings: pinctrl: mcp23s08: add documentation for reset-gpios pinctrl: mcp23s08: Add optional reset GPIO pinctrl: mediatek: fix mode encoding pinctrl: mcp23s08: Fix missing unlock on error in mcp23s08_irq() pinctrl: bcm: Constify static pinmux_ops pinctrl: bcm: Constify static pinctrl_ops pinctrl: ralink: move RT288X SoC pinmux config into a new 'pinctrl-rt288x.c' file pinctrl: ralink: move MT7620 SoC pinmux config into a new 'pinctrl-mt7620.c' file pinctrl: ralink: move RT305X SoC pinmux config into a new 'pinctrl-rt305x.c' file pinctrl: ralink: move RT3883 SoC pinmux config into a new 'pinctrl-rt3883.c' file pinctrl: ralink: move MT7621 SoC pinmux config into a new 'pinctrl-mt7621.c' file pinctrl: ralink: move ralink architecture pinmux header into the driver pinctrl: single: config: enable the pin's input pinctrl: mtk: Fix mt8365 Kconfig dependency pinctrl: mcp23s08: fix race condition in irq handler ... 01 July 2021, 23:57:14 UTC
e04360a Linus Torvalds 01 July 2021, 21:54:03 UTC Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma Pull rdma updates from Jason Gunthorpe: "This contains a replacement driver for Intel iWarp hardware. This new driver supports the old ethernet hardware and also newer chips that can do ROCE. Other than that, this contains the typical mix of patches: - Driver updates and cleanups for bnxt_re, cxgb4, mlx4, and mlx5 - Many static checker driven code clean ups, including a wide refcount_t conversion - Several series for the hns driver, more HIP09 HW capabilities, migration to new HW register manipulators, and code cleanups - Minor fixes and improvements in srp, rts, and cm - Improvements throughout for sysfs related code to use DEVICE_ATTR_*, make the ib_port sysfs first-class, and overall use sysfs APIs properly - Intel's new irdma driver replacing i40iw - rxe general clean ups and Memory Window support" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (211 commits) RDMA/core: Always release restrack object RDMA/mlx5: Don't access NULL-cleared mpi pointer RDMA/irdma: Fix potential overflow expression in irdma_prm_get_pbles RDMA/irdma: Check contents of user-space irdma_mem_reg_req object RDMA/rxe: Missing unlock on error in get_srq_wqe() RDMA/cma: Fix rdma_resolve_route() memory leak RDMA/core/sa_query: Remove unused argument RDMA/cma: Fix incorrect Packet Lifetime calculation RDMA/cma: Protect RMW with qp_mutex RDMA/cma: Remove unnecessary INIT->INIT transition RDMA/hns: Add window selection field of congestion control RDMA/hfi1: Remove use of kmap() RDMA/irdma: Remove use of kmap() RDMA/bnxt_re: Fix uninitialized struct bit field rsvd1 IB/isert: Align target max I/O size to initiator size RDMA/hns: Fix incorrect vlan enable bit in QPC MAINTAINERS: Update Broadcom RDMA maintainers RDMA/irdma: Use the queried port attributes RDMA/rxe: Fix redundant skb_put_zero RDMA/rxe: Fix extra copy in prepare_ack_packet ... 01 July 2021, 21:54:03 UTC
514798d Linus Torvalds 01 July 2021, 20:26:16 UTC Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "This round has a diffstat dominated by Qualcomm clk drivers. Honestly though that's just a bunch of data so the diffstat reflects that. Looking beyond that there's just a bunch of updates all around in various clk drivers. Renesas and NXP (for i.MX) are two SoC vendors that have a lot of patches in here. Overall the driver changes look to be mostly enabling more clks and non-critical fixes that we could hold until the next merge window. I'm especially excited about the series from Arnd that graduates clkdev to be the only implementation of clk_get() and clk_put(). That's a good step in the right direction to migreate eveerything over to the common clk framework. Now we don't have to worry about clkdev specific details, they're just part of the clk API now. Core: - clkdev is now the only option, i.e. clk_get()/clk_put() is implemented in only one place in the kernel instead of in drivers/clk/clkdev.c and in architectures that want their own implementation New Drivers: - Texas Instruments' LMK04832 Ultra Low-Noise JESD204B Compliant Clock Jitter Cleaner With Dual Loop PLLs - Qualcomm MDM9607 GCC - Qualcomm SC8180X display clks - Qualcomm SM6125 GCC - Qualcomm SM8250 CAMCC (camera) - Renesas RZ/G2L SoC - Hisilicon hi3559A SoC Updates: - Stop using clock-output-names in ST clk drivers (yay!) - Support secure mode of STM32MP1 SoCs - Improve clock support for Actions S500 SoC - duty cycle setting support on qcom clks - Add TI am33xx spread spectrum clock support - Use determine_rate() for the Amlogic pll ops instead of round_rate() - Restrict Amlogic gp0/1 and audio plls range on g12a/sm1 - Improve Amlogic axg-audio controller error on deferral - Add NNA clocks on Amlogic g12a - Reduce memory footprint of Rockchip PLL rate tables - A fix for the newly added Rockchip rk3568 clk driver - Exported clock for the newly added Rockchip video decoder - Remove audio ipg clock from i.MX8MP - Remove deprecated legacy clock binding for i.MX SCU clock driver - Use common clk-imx8qxp for both i.MX8QXP and i.MX8QM - Add multiple clocks to clk-imx8qxp driver (enet, hdmi, lcdif, audio, parallel interface) - Add dedicated clock ops for i.MX paralel interface - Different fixes for clocks controlled by ATF on i.MX SoCs - Add A53/A72 frequency scaling support i.MX clk-scu driver - Add special case for DCSS clock on suspend for i.MX clk-scu driver - Add parent save/restore on suspend/resume to i.MX clk-scu driver - Skip runtime PM enablement for CPU clocks in i.MX clk-scu driver - Remove the sys1_pll/sys2_pll clock gates for i.MX8MQ and their bindings - Tegra clk driver no longer deasserts resets on clk_enable as it gets in the way of certain power-up sequences - Fix compile testing for Tegra clk driver - One patch to fix a divider on the Allwinner v3s Audio PLL - Add support for CPU core clock boost modes on Renesas R-Car Gen3 - Add ISPCS (Image Signal Processor) clocks on Renesas R-Car V3U - Switch SH/R-Mobile and R-Car "DIV6" clocks to .determine_rate() and improve support for multiple parents - Switch Renesas RZ/N1 divider clocks to .determine_rate() - Add ZA2 (Audio Clock Generator) clock on Renesas R-Car D3 - Convert ar7 to common clk framework - Convert ralink to common clk framework" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (161 commits) clk: zynqmp: Handle divider specific read only flag clk: zynqmp: Use firmware specific mux clock flags clk: zynqmp: Use firmware specific divider clock flags clk: zynqmp: Use firmware specific common clock flags clk: lmk04832: Use of match table clk: lmk04832: Depend on SPI clk: stm32mp1: new compatible for secure RCC support dt-bindings: clock: stm32mp1 new compatible for secure rcc dt-bindings: reset: add MCU HOLD BOOT ID for SCMI reset domains on stm32mp15 dt-bindings: reset: add IDs for SCMI reset domains on stm32mp15 dt-bindings: clock: add IDs for SCMI clocks on stm32mp15 reset: stm32mp1: remove stm32mp1 reset clk: hisilicon: Add clock driver for hi3559A SoC dt-bindings: Document the hi3559a clock bindings clk: si5341: Add sysfs properties to allow checking/resetting device faults clk: si5341: Add silabs,iovdd-33 property clk: si5341: Add silabs,xaxb-ext-clk property clk: si5341: Allow different output VDD_SEL values clk: si5341: Update initialization magic clk: si5341: Check for input clock presence and PLL lock on startup ... 01 July 2021, 20:26:16 UTC
e058a84 Linus Torvalds 01 July 2021, 19:53:43 UTC Merge tag 'drm-next-2021-07-01' of git://anongit.freedesktop.org/drm/drm Pull drm updates from Dave Airlie: "Highlights: - AMD enables two more GPUs, with resulting header files - i915 has started to move to TTM for discrete GPU and enable DG1 discrete GPU support (not by default yet) - new HyperV drm driver - vmwgfx adds arm64 support - TTM refactoring ongoing - 16bpc display support for AMD hw Otherwise it's just the usual insane amounts of work all over the place in lots of drivers and the core, as mostly summarised below: Core: - mark AGP ioctls as legacy - disable force probing for non-master clients - HDR metadata property helpers - HDMI infoframe signal colorimetry support - remove drm_device.pdev pointer - remove DRM_KMS_FB_HELPER config option - remove drm_pci_alloc/free - drm_err_*/drm_dbg_* helpers - use drm driver names for fbdev - leaked DMA handle fix - 16bpc fixed point format fourcc - add prefetching memcpy for WC - Documentation fixes aperture: - add aperture ownership helpers dp: - aux fixes - downstream 0 port handling - use extended base receiver capability DPCD - Rename DP_PSR_SELECTIVE_UPDATE to better mach eDP spec - mst: use khz as link rate during init - VCPI fixes for StarTech hub ttm: - provide tt_shrink file via debugfs - warn about freeing pinned BOs - fix swapping error handling - move page alignment into BO - cleanup ttm_agp_backend - add ttm_sys_manager - don't override vm_ops - ttm_bo_mmap removed - make ttm_resource base of all managers - remove VM_MIXEDMAP usage panel: - sysfs_emit support - simple: runtime PM support - simple: power up panel when reading EDID + caching bridge: - MHDP8546: HDCP support + DT bindings - MHDP8546: Register DP AUX channel with userspace - TI SN65DSI83 + SN65DSI84: add driver - Sil8620: Fix module dependencies - dw-hdmi: make CEC driver loading optional - Ti-sn65dsi86: refclk fixes, subdrivers, runtime pm - It66121: Add driver + DT bindings - Adv7511: Support I2S IEC958 encoding - Anx7625: fix power-on delay - Nwi-dsi: Modesetting fixes; Cleanups - lt6911: add missing MODULE_DEVICE_TABLE - cdns: fix PM reference leak hyperv: - add new DRM driver for HyperV graphics efifb: - non-PCI device handling fixes i915: - refactor IP/device versioning - XeLPD Display IP preperation work - ADL-P enablement patches - DG1 uAPI behind BROKEN - disable mmap ioctl for discerte GPUs - start enabling HuC loading for Gen12+ - major GuC backend rework for new platforms - initial TTM support for Discrete GPUs - locking rework for TTM prep - use correct max source link rate for eDP - %p4cc format printing - GLK display fixes - VLV DSI panel power fixes - PSR2 disabled for RKL and ADL-S - ACPI _DSM invalid access fixed - DMC FW path abstraction - ADL-S PCI ID update - uAPI headers converted to kerneldoc - initial LMEM support for DG1 - x86/gpu: add Jasperlake to gen11 early quirks amdgpu: - Aldebaran updates + initial SR-IOV - new GPU: Beige Goby and Yellow Carp support - more LTTPR display work - Vangogh updates - SDMA 5.x GCR fixes - PCIe ASPM support - Renoir TMZ enablement - initial multiple eDP panel support - use fdinfo to track devices/process info - pin/unpin TTM fixes - free resource on fence usage query - fix fence calculation - fix hotunplug/suspend issues - GC/MM register access macro cleanup for SR-IOV - W=1 fixes - ACPI ATCS/ATIF handling rework - 16bpc fixed point format support - Initial smartshift support - RV/PCO power tuning fixes - new INFO query for additional vbios info amdkfd: - SR-IOV aldebaran support - HMM SVM support radeon: - SMU regression fixes - Oland flickering fix vmwgfx: - enable console with fbdev emulation - fix cpu updates of coherent multisample surfaces - remove reservation semaphore - add initial SVGA3 support - support arm64 msm: - devcoredump support for display errors - dpu/dsi: yaml bindings conversion - mdp5: alpha/blend_mode/zpos support - a6xx: cached coherent buffer support - gpu iova fault improvement - a660 support rockchip: - RK3036 win1 scaling support - RK3066/3188 missing register support - RK3036/3066/3126/3188 alpha support mediatek: - MT8167 HDMI support - MT8183 DPI dual edge support tegra: - fixed YUV support/scaling on Tegra186+ ast: - use pcim_iomap - fix DP501 EDID bochs: - screen blanking support etnaviv: - export more GPU ID values to userspace - add HWDB entry for GPU on i.MX8MP - rework linear window calcs exynos: - pm runtime changes imx: - Annotate dma_fence critical section - fix PRG modifiers after drmm conversion - Add 8 pixel alignment fix for 1366x768 - fix YUV advertising - add color properties ingenic: - IPU planes fix panfrost: - Mediatek MT8183 support + DT bindings - export AFBC_FEATURES register to userspace simpledrm: - %pr for printing resources nouveau: - pin/unpin TTM fixes qxl: - unpin shadow BO virtio: - create dumb BOs as guest blob vkms: - drmm_universal_plane_alloc - add XRGB plane composition - overlay support" * tag 'drm-next-2021-07-01' of git://anongit.freedesktop.org/drm/drm: (1570 commits) drm/i915: Reinstate the mmap ioctl for some platforms drm/i915/dsc: abstract helpers to get bigjoiner primary/secondary crtc Revert "drm/msm/mdp5: provide dynamic bandwidth management" drm/msm/mdp5: provide dynamic bandwidth management drm/msm/mdp5: add perf blocks for holding fudge factors drm/msm/mdp5: switch to standard zpos property drm/msm/mdp5: add support for alpha/blend_mode properties drm/msm/mdp5: use drm_plane_state for pixel blend mode drm/msm/mdp5: use drm_plane_state for storing alpha value drm/msm/mdp5: use drm atomic helpers to handle base drm plane state drm/msm/dsi: do not enable PHYs when called for the slave DSI interface drm/msm: Add debugfs to trigger shrinker drm/msm/dpu: Avoid ABBA deadlock between IRQ modules drm/msm: devcoredump iommu fault support iommu/arm-smmu-qcom: Add stall support drm/msm: Improve the a6xx page fault handler iommu/arm-smmu-qcom: Add an adreno-smmu-priv callback to get pagefault info iommu/arm-smmu: Add support for driver IOMMU fault handlers drm/msm: export hangcheck_period in debugfs drm/msm/a6xx: add support for Adreno 660 GPU ... 01 July 2021, 19:53:43 UTC
c288d9c Linus Torvalds 01 July 2021, 19:16:24 UTC Merge tag 'for-5.14/io_uring-2021-06-30' of git://git.kernel.dk/linux-block Pull io_uring updates from Jens Axboe: - Multi-queue iopoll improvement (Fam) - Allow configurable io-wq CPU masks (me) - renameat/linkat tightening (me) - poll re-arm improvement (Olivier) - SQPOLL race fix (Olivier) - Cancelation unification (Pavel) - SQPOLL cleanups (Pavel) - Enable file backed buffers for shmem/memfd (Pavel) - A ton of cleanups and performance improvements (Pavel) - Followup and misc fixes (Colin, Fam, Hao, Olivier) * tag 'for-5.14/io_uring-2021-06-30' of git://git.kernel.dk/linux-block: (83 commits) io_uring: code clean for kiocb_done() io_uring: spin in iopoll() only when reqs are in a single queue io_uring: pre-initialise some of req fields io_uring: refactor io_submit_flush_completions io_uring: optimise hot path restricted checks io_uring: remove not needed PF_EXITING check io_uring: mainstream sqpoll task_work running io_uring: refactor io_arm_poll_handler() io_uring: reduce latency by reissueing the operation io_uring: add IOPOLL and reserved field checks to IORING_OP_UNLINKAT io_uring: add IOPOLL and reserved field checks to IORING_OP_RENAMEAT io_uring: refactor io_openat2() io_uring: simplify struct io_uring_sqe layout io_uring: update sqe layout build checks io_uring: fix code style problems io_uring: refactor io_sq_thread() io_uring: don't change sqpoll creds if not needed io_uring: Create define to modify a SQPOLL parameter io_uring: Fix race condition when sqp thread goes to sleep io_uring: improve in tctx_task_work() resubmission ... 01 July 2021, 19:16:24 UTC
cf96b8e Riccardo Mancini 24 June 2021, 23:19:25 UTC perf session: Add missing evlist__delete when deleting a session ASan reports a memory leak caused by evlist not being deleted on exit in perf-report, perf-script and perf-data. The problem is caused by evlist->session not being deleted, which is allocated in perf_session__read_header, called in perf_session__new if perf_data is in read mode. In case of write mode, the session->evlist is filled by the caller. This patch solves the problem by calling evlist__delete in perf_session__delete if perf_data is in read mode. Changes in v2: - call evlist__delete from within perf_session__delete v1: https://lore.kernel.org/lkml/20210621234317.235545-1-rickyman7@gmail.com/ ASan report follows: $ ./perf script report flamegraph ================================================================= ==227640==ERROR: LeakSanitizer: detected memory leaks <SNIP unrelated> Indirect leak of 2704 byte(s) in 1 object(s) allocated from: #0 0x4f4137 in calloc (/home/user/linux/tools/perf/perf+0x4f4137) #1 0xbe3d56 in zalloc /home/user/linux/tools/lib/perf/../../lib/zalloc.c:8:9 #2 0x7f999e in evlist__new /home/user/linux/tools/perf/util/evlist.c:77:26 #3 0x8ad938 in perf_session__read_header /home/user/linux/tools/perf/util/header.c:3797:20 #4 0x8ec714 in perf_session__open /home/user/linux/tools/perf/util/session.c:109:6 #5 0x8ebe83 in perf_session__new /home/user/linux/tools/perf/util/session.c:213:10 #6 0x60c6de in cmd_script /home/user/linux/tools/perf/builtin-script.c:3856:12 #7 0x7b2930 in run_builtin /home/user/linux/tools/perf/perf.c:313:11 #8 0x7b120f in handle_internal_command /home/user/linux/tools/perf/perf.c:365:8 #9 0x7b2493 in run_argv /home/user/linux/tools/perf/perf.c:409:2 #10 0x7b0c89 in main /home/user/linux/tools/perf/perf.c:539:3 #11 0x7f5260654b74 (/lib64/libc.so.6+0x27b74) Indirect leak of 568 byte(s) in 1 object(s) allocated from: #0 0x4f4137 in calloc (/home/user/linux/tools/perf/perf+0x4f4137) #1 0xbe3d56 in zalloc /home/user/linux/tools/lib/perf/../../lib/zalloc.c:8:9 #2 0x80ce88 in evsel__new_idx /home/user/linux/tools/perf/util/evsel.c:268:24 #3 0x8aed93 in evsel__new /home/user/linux/tools/perf/util/evsel.h:210:9 #4 0x8ae07e in perf_session__read_header /home/user/linux/tools/perf/util/header.c:3853:11 #5 0x8ec714 in perf_session__open /home/user/linux/tools/perf/util/session.c:109:6 #6 0x8ebe83 in perf_session__new /home/user/linux/tools/perf/util/session.c:213:10 #7 0x60c6de in cmd_script /home/user/linux/tools/perf/builtin-script.c:3856:12 #8 0x7b2930 in run_builtin /home/user/linux/tools/perf/perf.c:313:11 #9 0x7b120f in handle_internal_command /home/user/linux/tools/perf/perf.c:365:8 #10 0x7b2493 in run_argv /home/user/linux/tools/perf/perf.c:409:2 #11 0x7b0c89 in main /home/user/linux/tools/perf/perf.c:539:3 #12 0x7f5260654b74 (/lib64/libc.so.6+0x27b74) Indirect leak of 264 byte(s) in 1 object(s) allocated from: #0 0x4f4137 in calloc (/home/user/linux/tools/perf/perf+0x4f4137) #1 0xbe3d56 in zalloc /home/user/linux/tools/lib/perf/../../lib/zalloc.c:8:9 #2 0xbe3e70 in xyarray__new /home/user/linux/tools/lib/perf/xyarray.c:10:23 #3 0xbd7754 in perf_evsel__alloc_id /home/user/linux/tools/lib/perf/evsel.c:361:21 #4 0x8ae201 in perf_session__read_header /home/user/linux/tools/perf/util/header.c:3871:7 #5 0x8ec714 in perf_session__open /home/user/linux/tools/perf/util/session.c:109:6 #6 0x8ebe83 in perf_session__new /home/user/linux/tools/perf/util/session.c:213:10 #7 0x60c6de in cmd_script /home/user/linux/tools/perf/builtin-script.c:3856:12 #8 0x7b2930 in run_builtin /home/user/linux/tools/perf/perf.c:313:11 #9 0x7b120f in handle_internal_command /home/user/linux/tools/perf/perf.c:365:8 #10 0x7b2493 in run_argv /home/user/linux/tools/perf/perf.c:409:2 #11 0x7b0c89 in main /home/user/linux/tools/perf/perf.c:539:3 #12 0x7f5260654b74 (/lib64/libc.so.6+0x27b74) Indirect leak of 32 byte(s) in 1 object(s) allocated from: #0 0x4f4137 in calloc (/home/user/linux/tools/perf/perf+0x4f4137) #1 0xbe3d56 in zalloc /home/user/linux/tools/lib/perf/../../lib/zalloc.c:8:9 #2 0xbd77e0 in perf_evsel__alloc_id /home/user/linux/tools/lib/perf/evsel.c:365:14 #3 0x8ae201 in perf_session__read_header /home/user/linux/tools/perf/util/header.c:3871:7 #4 0x8ec714 in perf_session__open /home/user/linux/tools/perf/util/session.c:109:6 #5 0x8ebe83 in perf_session__new /home/user/linux/tools/perf/util/session.c:213:10 #6 0x60c6de in cmd_script /home/user/linux/tools/perf/builtin-script.c:3856:12 #7 0x7b2930 in run_builtin /home/user/linux/tools/perf/perf.c:313:11 #8 0x7b120f in handle_internal_command /home/user/linux/tools/perf/perf.c:365:8 #9 0x7b2493 in run_argv /home/user/linux/tools/perf/perf.c:409:2 #10 0x7b0c89 in main /home/user/linux/tools/perf/perf.c:539:3 #11 0x7f5260654b74 (/lib64/libc.so.6+0x27b74) Indirect leak of 7 byte(s) in 1 object(s) allocated from: #0 0x4b8207 in strdup (/home/user/linux/tools/perf/perf+0x4b8207) #1 0x8b4459 in evlist__set_event_name /home/user/linux/tools/perf/util/header.c:2292:16 #2 0x89d862 in process_event_desc /home/user/linux/tools/perf/util/header.c:2313:3 #3 0x8af319 in perf_file_section__process /home/user/linux/tools/perf/util/header.c:3651:9 #4 0x8aa6e9 in perf_header__process_sections /home/user/linux/tools/perf/util/header.c:3427:9 #5 0x8ae3e7 in perf_session__read_header /home/user/linux/tools/perf/util/header.c:3886:2 #6 0x8ec714 in perf_session__open /home/user/linux/tools/perf/util/session.c:109:6 #7 0x8ebe83 in perf_session__new /home/user/linux/tools/perf/util/session.c:213:10 #8 0x60c6de in cmd_script /home/user/linux/tools/perf/builtin-script.c:3856:12 #9 0x7b2930 in run_builtin /home/user/linux/tools/perf/perf.c:313:11 #10 0x7b120f in handle_internal_command /home/user/linux/tools/perf/perf.c:365:8 #11 0x7b2493 in run_argv /home/user/linux/tools/perf/perf.c:409:2 #12 0x7b0c89 in main /home/user/linux/tools/perf/perf.c:539:3 #13 0x7f5260654b74 (/lib64/libc.so.6+0x27b74) SUMMARY: AddressSanitizer: 3728 byte(s) leaked in 7 allocation(s). Signed-off-by: Riccardo Mancini <rickyman7@gmail.com> Acked-by: Ian Rogers <irogers@google.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210624231926.212208-1-rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:38 UTC
6de249d Riccardo Mancini 24 June 2021, 22:34:22 UTC perf annotate: Allow 's' on source code lines In perf annotate, when 's' is pressed on a line containing source code, it shows the message "Only available for assembly lines". This patch gets rid of the error, moving the cursr to the next available asm line (or the closest previous one if no asm line is found moving forwards), before hiding source code lines. Changes in v2: - handle case of no asm line found in annotate_browser__find_next_asm_line by returning NULL and handling error in caller. Signed-off-by: Riccardo Mancini <rickyman7@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin Liška <mliska@suse.cz> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210624223423.189550-1-rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:38 UTC
ec4c00f Adrian Hunter 27 June 2021, 13:18:18 UTC perf dlfilter: Add object_code() to perf_dlfilter_fns Add a function, for use by dlfilters, to read object code. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:38 UTC
6495e76 Adrian Hunter 27 June 2021, 13:18:17 UTC perf dlfilter: Add attr() to perf_dlfilter_fns Add a function, for use by dlfilters, to return the perf_event_attr structure. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:38 UTC
244afc0 Adrian Hunter 27 June 2021, 13:18:16 UTC perf dlfilter: Add srcline() to perf_dlfilter_fns Add a function, for use by dlfilters, to return source code file name and line number. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:38 UTC
e35995e Adrian Hunter 27 June 2021, 13:18:15 UTC perf dlfilter: Add insn() to perf_dlfilter_fns Add a function, for use by dlfilters, to return instruction bytes. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:38 UTC
f645744 Adrian Hunter 27 June 2021, 13:18:14 UTC perf dlfilter: Add resolve_address() to perf_dlfilter_fns Add a function, for use by dlfilters, to resolve addresses from branch stacks or callchains. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:38 UTC
0beb218 Adrian Hunter 27 June 2021, 13:18:13 UTC perf build: Install perf_dlfilter.h Users of the --dlfilter option need to include perf_dlfilter.h in their filters. Install it to the include path. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:38 UTC
3d032a2 Adrian Hunter 27 June 2021, 13:18:12 UTC perf script: Add option to pass arguments to dlfilters Add option --dlarg to pass arguments to dlfilters. The --dlarg option can be repeated to pass more than 1 argument. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
638e2b9 Adrian Hunter 27 June 2021, 13:18:11 UTC perf script: Add option to list dlfilters Add option --list-dlfilters to list dlfilters in the current directory or the exec-path e.g. ~/libexec/perf-core/dlfilters. Use with option -v (must come before option --list-dlfilters) to show long descriptions. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
9bde93a Adrian Hunter 27 June 2021, 13:18:10 UTC perf script: Add dlfilter__filter_event_early() filter_event_early() can be more than 30% faster than filter_event() because it is called before internal filtering. In other respects it is the same as filter_event(), except that it will be passed events that have yet to be filtered out. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
291961f Adrian Hunter 27 June 2021, 13:18:09 UTC perf script: Add API for filtering via dynamically loaded shared object In some cases, users want to filter very large amounts of data (e.g. from AUX area tracing like Intel PT) looking for something specific. While scripting such as Python can be used, Python is 10 to 20 times slower than C. So define a C API so that custom filters can be written and loaded. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210627131818.810-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
c435c16 Arnaldo Carvalho de Melo 01 July 2021, 17:20:58 UTC perf llvm: Return -ENOMEM when asprintf() fails Zhihao sent a patch but it made llvm__compile_bpf() return what asprintf() returns on error, which is just -1, but since this function returns -errno, fix it by returning -ENOMEM for this case instead. Fixes: cb76371441d098 ("perf llvm: Allow passing options to llc ...") Fixes: 5eab5a7ee032ac ("perf llvm: Display eBPF compiling command ...") Reported-by: Hulk Robot <hulkci@huawei.com> Reported-by: Zhihao Cheng <chengzhihao1@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Yu Kuai <yukuai3@huawei.com> Cc: clang-built-linux@googlegroups.com Link: http://lore.kernel.org/lkml/20210609115945.2193194-1-chengzhihao1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
0323dea James Clark 09 June 2021, 13:04:20 UTC perf cs-etm: Delay decode of non-timeless data until cs_etm__flush_events() Currently, timeless mode starts the decode on PERF_RECORD_EXIT, and non-timeless mode starts decoding on the fist PERF_RECORD_AUX record. This can cause the "data has no samples!" error if the first PERF_RECORD_AUX record comes before the first (or any relevant) PERF_RECORD_MMAP2 record because the mmaps are required by the decoder to access the binary data. This change pushes the start of non-timeless decoding to the very end of parsing the file. The PERF_RECORD_EXIT event can't be used because it might not exist in system-wide or snapshot modes. I have not been able to find the exact cause for the events to be intermittently in the wrong order in the basic scenario: perf record -e cs_etm/@tmc_etr0/u top But it can be made to happen every time with the --delay option. This is because "enable_on_exec" is disabled, which causes tracing to start before the process to be launched is exec'd. For example: perf record -e cs_etm/@tmc_etr0/u --delay=1 top perf report -D | grep 'AUX\|MAP' 0 16714475632740 0x520 [0x40]: PERF_RECORD_AUX offset: 0 size: 0x30 flags: 0 [] 0 16714476494960 0x5d0 [0x40]: PERF_RECORD_AUX offset: 0x30 size: 0x30 flags: 0 [] 0 16714478208900 0x660 [0x40]: PERF_RECORD_AUX offset: 0x60 size: 0x30 flags: 0 [] 4294967295 16714478293340 0x700 [0x70]: PERF_RECORD_MMAP2 8712/8712: [0x557a460000(0x54000) @ 0 00:17 5329258 0]: r-xp /usr/bin/top 4294967295 16714478353020 0x770 [0x88]: PERF_RECORD_MMAP2 8712/8712: [0x7f86f72000(0x34000) @ 0 00:17 5214354 0]: r-xp /usr/lib/aarch64-linux-gnu/ld-2.31.so Another scenario in which decoding from the first aux record fails is a workload that forks. Although the aux record comes after 'bash', it comes before 'top', which is what we are interested in. For example: perf record -e cs_etm/@tmc_etr0/u -- bash -c top perf report -D | grep 'AUX\|MAP' 4294967295 16853946421300 0x510 [0x70]: PERF_RECORD_MMAP2 8723/8723: [0x558f280000(0x142000) @ 0 00:17 5213953 0]: r-xp /usr/bin/bash 4294967295 16853946543560 0x580 [0x88]: PERF_RECORD_MMAP2 8723/8723: [0x7fbba6e000(0x34000) @ 0 00:17 5214354 0]: r-xp /usr/lib/aarch64-linux-gnu/ld-2.31.so 4294967295 16853946628420 0x608 [0x68]: PERF_RECORD_MMAP2 8723/8723: [0x7fbba9e000(0x1000) @ 0 00:00 0 0]: r-xp [vdso] 0 16853947067300 0x690 [0x40]: PERF_RECORD_AUX offset: 0 size: 0x3a60 flags: 0 [] ... 0 16853966602580 0x1758 [0x40]: PERF_RECORD_AUX offset: 0xc2470 size: 0x30 flags: 0 [] 4294967295 16853967119860 0x1818 [0x70]: PERF_RECORD_MMAP2 8723/8723: [0x5559e70000(0x54000) @ 0 00:17 5329258 0]: r-xp /usr/bin/top 4294967295 16853967181620 0x1888 [0x88]: PERF_RECORD_MMAP2 8723/8723: [0x7f9ed06000(0x34000) @ 0 00:17 5214354 0]: r-xp /usr/lib/aarch64-linux-gnu/ld-2.31.so 4294967295 16853967237180 0x1910 [0x68]: PERF_RECORD_MMAP2 8723/8723: [0x7f9ed36000(0x1000) @ 0 00:00 0 0]: r-xp [vdso] A third scenario is when the majority of time is spent in a shared library that is not loaded at startup. For example a dynamically loaded plugin. Testing ======= Testing was done by checking if any samples that are present in the old output are missing from the new output. Timestamps must be stripped out with awk because now they are set to the last AUX sample, rather than the first: ./perf script $4 | awk '!($4="")' > new.script ./perf-default script $4 | awk '!($4="")' > default.script comm -13 <(sort -u new.script) <(sort -u default.script) Testing showed that the new output is a superset of the old. When lines appear in the comm output, it is not because they are missing but because [unknown] is now resolved to sensible locations. For example last putp branch here now resolves to libtinfo, so it's not missing from the output, but is actually improved: Old: top 305 [001] 1 branches:uH: 402830 _init+0x30 (/usr/bin/top.procps) => 404a1c [unknown] (/usr/bin/top.procps) top 305 [001] 1 branches:uH: 404a20 [unknown] (/usr/bin/top.procps) => 402970 putp@plt+0x0 (/usr/bin/top.procps) top 305 [001] 1 branches:uH: 40297c putp@plt+0xc (/usr/bin/top.procps) => 0 [unknown] ([unknown]) New: top 305 [001] 1 branches:uH: 402830 _init+0x30 (/usr/bin/top.procps) => 404a1c [unknown] (/usr/bin/top.procps) top 305 [001] 1 branches:uH: 404a20 [unknown] (/usr/bin/top.procps) => 402970 putp@plt+0x0 (/usr/bin/top.procps) top 305 [001] 1 branches:uH: 40297c putp@plt+0xc (/usr/bin/top.procps) => 7f8ab39208 putp+0x0 (/lib/libtinfo.so.5.9) In the following two modes, decoding now works and the "data has no samples!" error is not displayed any more: perf record -e cs_etm/@tmc_etr0/u -- bash -c top perf record -e cs_etm/@tmc_etr0/u --delay=1 top In snapshot mode, there is also an improvement to decoding. Previously samples for the 'kill' process that was used to send SIGUSR2 were completely missing, because the process hadn't started yet. But now there are additional samples present: perf record -e cs_etm/@tmc_etr0/u --snapshot -a perf script stress 19380 [003] 161627.938153: 1000000 instructions:uH: aaaabb612fb4 [unknown] (/usr/bin/stress) kill 19644 [000] 161627.938153: 1000000 instructions:uH: ffffae0ef210 [unknown] (/lib/aarch64-linux-gnu/ld-2.27.so) stress 19380 [003] 161627.938153: 1000000 instructions:uH: ffff9e754d40 random_r+0x20 (/lib/aarch64-linux-gnu/libc-2.27.so) Also tested was the round trip of 'perf inject' followed by 'perf report' which has the same differences and improvements. Signed-off-by: James Clark <james.clark@arm.com> Reviewed-by: Leo Yan <leo.yan@linaro.org> Tested-by: Leo Yan <leo.yan@linaro.org> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Al Grant <al.grant@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Branislav Rankov <branislav.rankov@arm.com> Cc: Denis Nikitin <denik@chromium.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20210609130421.13934-1-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
f88bb1c Arnaldo Carvalho de Melo 21 December 2020, 23:04:45 UTC tools headers UAPI: Synch KVM's svm.h header with the kernel To pick up the changes from: 59d21d67f37481cf ("KVM: SVM: Software reserved fields") Picking the new SVM_EXIT_SW exit reasons. Addressing this perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/svm.h' differs from latest version at 'arch/x86/include/uapi/asm/svm.h' diff -u tools/arch/x86/include/uapi/asm/svm.h arch/x86/include/uapi/asm/svm.h Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Vineeth Pillai <viremana@linux.microsoft.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
795c4ab Arnaldo Carvalho de Melo 21 December 2020, 15:53:44 UTC tools kvm headers arm64: Update KVM headers from the kernel sources To pick the changes from: f0376edb1ddcab19 ("KVM: arm64: Add ioctl to fetch/store tags in a guest") That don't causes any changes in tooling (when built on x86), only addresses this perf build warning: Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h' diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h Cc: Marc Zyngier <maz@kernel.org> Cc: Steven Price <steven.price@arm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
e48f62a Arnaldo Carvalho de Melo 09 May 2021, 12:39:02 UTC tools headers UAPI: Sync linux/kvm.h with the kernel sources To pick the changes in: 19238e75bd8ed8ff ("kvm: x86: Allow userspace to handle emulation errors") cb082bfab59a224a ("KVM: stats: Add fd-based API to read binary stats data") b87cc116c7e1bc62 ("KVM: PPC: Book3S HV: Add KVM_CAP_PPC_RPT_INVALIDATE capability") f0376edb1ddcab19 ("KVM: arm64: Add ioctl to fetch/store tags in a guest") 0dbb11230437895f ("KVM: X86: Introduce KVM_HC_MAP_GPA_RANGE hypercall") 6dba940352038b56 ("KVM: x86: Introduce KVM_GET_SREGS2 / KVM_SET_SREGS2") 644f706719f0297b ("KVM: x86: hyper-v: Introduce KVM_CAP_HYPERV_ENFORCE_CPUID") That automatically adds support for these new ioctls: $ tools/perf/trace/beauty/kvm_ioctl.sh > before $ cp include/uapi/linux/kvm.h tools/include/uapi/linux/kvm.h $ tools/perf/trace/beauty/kvm_ioctl.sh > after $ diff -u before after --- before 2021-07-01 13:42:07.006387354 -0300 +++ after 2021-07-01 13:45:16.051649301 -0300 @@ -95,6 +95,9 @@ [0xc9] = "XEN_HVM_SET_ATTR", [0xca] = "XEN_VCPU_GET_ATTR", [0xcb] = "XEN_VCPU_SET_ATTR", + [0xcc] = "GET_SREGS2", + [0xcd] = "SET_SREGS2", + [0xce] = "GET_STATS_FD", [0xe0] = "CREATE_DEVICE", [0xe1] = "SET_DEVICE_ATTR", [0xe2] = "GET_DEVICE_ATTR", $ This silences these perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h' diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h' diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h Cc: Aaron Lewis <aaronlewis@google.com> Cc: Ashish Kalra <ashish.kalra@amd.com> Cc: Bharata B Rao <bharata@linux.ibm.com> Cc: Jing Zhang <jingzhangos@google.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Maxim Levitsky <mlevitsk@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Steven Price <steven.price@arm.com> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
cc200a7 Arnaldo Carvalho de Melo 01 July 2021, 16:39:15 UTC tools headers cpufeatures: Sync with the kernel sources To pick the changes from: 1348924ba8169f35 ("x86/msr: Define new bits in TSX_FORCE_ABORT MSR") cbcddaa33d7e11a0 ("perf/x86/rapl: Use CPUID bit on AMD and Hygon parts") This only causes these perf files to be rebuilt: CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o CC /tmp/build/perf/bench/mem-memset-x86-64-asm.o And addresses this perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h' diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h Cc: Andrew Cooper <andrew.cooper3@citrix.com> Cc: Borislav Petkov <bp@suse.de> Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:37 UTC
14c6ef2 Arnaldo Carvalho de Melo 01 July 2021, 16:34:38 UTC tools include UAPI: Update linux/mount.h copy To pick the changes from: dd8b477f9a3d8edb ("mount: Support "nosymfollow" in new mount api") That ends up adding support for the new MOUNT_ATTR_NOSYMFOLLOW mount attribute: $ tools/perf/trace/beauty/fsmount.sh > before $ cp include/uapi/linux/mount.h tools/include/uapi/linux/mount.h $ tools/perf/trace/beauty/fsmount.sh > after $ diff -u before after --- before 2021-07-01 13:34:04.542517355 -0300 +++ after 2021-07-01 13:34:12.423694537 -0300 @@ -7,4 +7,5 @@ [ilog2(0x00000020) + 1] = "STRICTATIME", [ilog2(0x00000080) + 1] = "NODIRATIME", [ilog2(0x00100000) + 1] = "IDMAP", + [ilog2(0x00200000) + 1] = "NOSYMFOLLOW", }; $ So now one can use it in --filter expressions for tracepoints. This silences this perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/linux/mount.h' differs from latest version at 'include/uapi/linux/mount.h' diff -u tools/include/uapi/linux/mount.h include/uapi/linux/mount.h Cc: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:36 UTC
04df0dc Arnaldo Carvalho de Melo 01 July 2021, 16:32:18 UTC tools arch x86: Sync the msr-index.h copy with the kernel sources To pick up the changes from these csets: 1348924ba8169f35 ("x86/msr: Define new bits in TSX_FORCE_ABORT MSR") That cause no changes to tooling: $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before $ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h $ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after $ diff -u before after $ Just silences this perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h' diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h Cc: Borislav Petkov <bp@suse.de> Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:36 UTC
8941ba5 Leo Yan 19 May 2021, 07:19:39 UTC perf arm-spe: Don't wait for PERF_RECORD_EXIT event When decode Arm SPE trace, it waits for PERF_RECORD_EXIT event (the last perf event) for processing trace data, which is needless and even might cause logic error, e.g. it might fail to correlate perf events with Arm SPE events correctly. So this patch removes the condition checking for PERF_RECORD_EXIT event. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: James Clark <james.clark@arm.com> Tested-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Grant <Al.Grant@arm.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: linux-arm-kernel@lists.infradead.org Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20210519071939.1598923-6-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:36 UTC
afb5e9e Leo Yan 19 May 2021, 07:19:38 UTC perf arm-spe: Bail out if the trace is later than perf event It's possible that record in Arm SPE trace is later than perf event and vice versa. This asks to correlate the perf events and Arm SPE synthesized events to be processed in the manner of correct timing. To achieve the time ordering, this patch reverses the flow, it firstly calls arm_spe_sample() and then calls arm_spe_decode(). By comparing the timestamp value and detect the perf event is coming earlier than Arm SPE trace data, it bails out from the decoding loop, the last record is pushed into auxtrace stack and is deferred to generate sample. To track the timestamp, everytime it updates timestamp for the latest record. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: James Clark <james.clark@arm.com> Tested-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Grant <Al.Grant@arm.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20210519071939.1598923-5-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:36 UTC
85498f7 Leo Yan 19 May 2021, 07:19:37 UTC perf arm-spe: Assign kernel time to synthesized event In current code, it assigns the arch timer counter to the synthesized samples Arm SPE trace, thus the samples don't contain the kernel time but only contain the raw counter value. To fix the issue, this patch converts the timer counter to kernel time and assigns it to sample timestamp. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: James Clark <james.clark@arm.com> Tested-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Grant <Al.Grant@arm.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20210519071939.1598923-4-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:36 UTC
6305190 Leo Yan 19 May 2021, 07:19:36 UTC perf arm-spe: Convert event kernel time to counter value When handle a perf event, Arm SPE decoder needs to decide if this perf event is earlier or later than the samples from Arm SPE trace data; to do comparision, it needs to use the same unit for the time. This patch converts the event kernel time to arch timer's counter value, thus it can be used to compare with counter value contained in Arm SPE Timestamp packet. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: James Clark <james.clark@arm.com> Tested-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Grant <Al.Grant@arm.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20210519071939.1598923-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:36 UTC
c210c30 Leo Yan 19 May 2021, 07:19:35 UTC perf arm-spe: Save clock parameters from TIME_CONV event During the recording phase, "perf record" tool synthesizes event PERF_RECORD_TIME_CONV for the hardware clock parameters and saves the event into the data file. Afterwards, when processing the data file, the event TIME_CONV will be processed at the very early time and is stored into session context. This patch extracts these parameters from the session context and saves into the structure "spe->tc" with the type perf_tsc_conversion, so that the parameters are ready for conversion between clock counter and time stamp. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: James Clark <james.clark@arm.com> Tested-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Grant <Al.Grant@arm.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20210519071939.1598923-2-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:36 UTC
2f01c20 Leo Yan 01 July 2021, 09:35:36 UTC perf cs-etm: Remove callback cs_etm_find_snapshot() The callback cs_etm_find_snapshot() is invoked for snapshot mode, its main purpose is to find the correct AUX trace data and returns "head" and "old" (we can call "old" as "old head") to the caller, the caller __auxtrace_mmap__read() uses these two pointers to decide the AUX trace data size. This patch removes cs_etm_find_snapshot() with below reasons: - The first thing in cs_etm_find_snapshot() is to check if the head has wrapped around, if it is not, directly bails out. The checking is pointless, this is because the "head" and "old" pointers both are monotonical increasing so they never wrap around. - cs_etm_find_snapshot() adjusts the "head" and "old" pointers and assumes the AUX ring buffer is fully filled with the hardware trace data, so it always subtracts the difference "mm->len" from "head" to get "old". Let's imagine the snapshot is taken in very short interval, the tracers only fill a small chunk of the trace data into the AUX ring buffer, in this case, it's wrongly to copy the whole the AUX ring buffer to perf file. - As the "head" and "old" pointers are monotonically increased, the function __auxtrace_mmap__read() handles these two pointers properly. It calculates the reminders for these two pointers, and the size is clamped to be never more than "snapshot_size". We can simply reply on the function __auxtrace_mmap__read() to calculate the correct result for data copying, it's not necessary to add Arm CoreSight specific callback. Signed-off-by: Leo Yan <leo.yan@linaro.org> Reviewed-by: James Clark <james.clark@arm.com> Tested-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Daniel Kiss <daniel.kiss@arm.com> Cc: Denis Nikitin <denik@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: coresight@lists.linaro.org Link: http://lore.kernel.org/lkml/20210701093537.90759-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:36 UTC
d6a735e Namhyung Kim 25 June 2021, 07:18:25 UTC perf bpf_counter: Move common functions to bpf_counter.h Some helper functions will be used for cgroup counting too. Move them to a header file for sharing. Committer notes: Fix the build on older systems with: - struct bpf_map_info map_info = {0}; + struct bpf_map_info map_info = { .id = 0, }; This wasn't breaking the build in such systems as bpf_counter.c isn't built due to: tools/perf/util/Build: perf-$(CONFIG_PERF_BPF_SKEL) += bpf_counter.o The bpf_counter.h file on the other hand is included from places that are built everywhere. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20210625071826.608504-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> 01 July 2021, 19:14:19 UTC
911a299 Linus Torvalds 01 July 2021, 19:06:39 UTC Merge tag 'fs_for_v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull misc fs updates from Jan Kara: "The new quotactl_fd() syscall (remake of quotactl_path() syscall that got introduced & disabled in 5.13 cycle), and couple of udf, reiserfs, isofs, and writeback fixes and cleanups" * tag 'fs_for_v5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: writeback: fix obtain a reference to a freeing memcg css quota: remove unnecessary oom message isofs: remove redundant continue statement quota: Wire up quotactl_fd syscall quota: Change quotactl_path() systcall to an fd-based one reiserfs: Remove unneed check in reiserfs_write_full_page() udf: Fix NULL pointer dereference in udf_symlink function reiserfs: add check for invalid 1st journal block 01 July 2021, 19:06:39 UTC
4030a6e Paul Burton 01 July 2021, 17:24:07 UTC tracing: Resize tgid_map to pid_max, not PID_MAX_DEFAULT Currently tgid_map is sized at PID_MAX_DEFAULT entries, which means that on systems where pid_max is configured higher than PID_MAX_DEFAULT the ftrace record-tgid option doesn't work so well. Any tasks with PIDs higher than PID_MAX_DEFAULT are simply not recorded in tgid_map, and don't show up in the saved_tgids file. In particular since systemd v243 & above configure pid_max to its highest possible 1<<22 value by default on 64 bit systems this renders the record-tgids option of little use. Increase the size of tgid_map to the configured pid_max instead, allowing it to cover the full range of PIDs up to the maximum value of PID_MAX_LIMIT if the system is configured that way. On 64 bit systems with pid_max == PID_MAX_LIMIT this will increase the size of tgid_map from 256KiB to 16MiB. Whilst this 64x increase in memory overhead sounds significant 64 bit systems are presumably best placed to accommodate it, and since tgid_map is only allocated when the record-tgid option is actually used presumably the user would rather it spends sufficient memory to actually record the tgids they expect. The size of tgid_map could also increase for CONFIG_BASE_SMALL=y configurations, but these seem unlikely to be systems upon which people are both configuring a large pid_max and running ftrace with record-tgid anyway. Of note is that we only allocate tgid_map once, the first time that the record-tgid option is enabled. Therefore its size is only set once, to the value of pid_max at the time the record-tgid option is first enabled. If a user increases pid_max after that point, the saved_tgids file will not contain entries for any tasks with pids beyond the earlier value of pid_max. Link: https://lkml.kernel.org/r/20210701172407.889626-2-paulburton@google.com Fixes: d914ba37d714 ("tracing: Add support for recording tgid of tasks") Cc: Ingo Molnar <mingo@redhat.com> Cc: Joel Fernandes <joelaf@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Paul Burton <paulburton@google.com> [ Fixed comment coding style ] Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> 01 July 2021, 18:18:53 UTC
b869d5b Manfred Spraul 01 July 2021, 01:57:18 UTC ipc/util.c: use binary search for max_idx If semctl(), msgctl() and shmctl() are called with IPC_INFO, SEM_INFO, MSG_INFO or SHM_INFO, then the return value is the index of the highest used index in the kernel's internal array recording information about all SysV objects of the requested type for the current namespace. (This information can be used with repeated ..._STAT or ..._STAT_ANY operations to obtain information about all SysV objects on the system.) There is a cache for this value. But when the cache needs up be updated, then the highest used index is determined by looping over all possible values. With the introduction of IPCMNI_EXTEND_SHIFT, this could be a loop over 16 million entries. And due to /proc/sys/kernel/*next_id, the index values do not need to be consecutive. With <write 16000000 to msg_next_id>, msgget(), msgctl(,IPC_RMID) in a loop, I have observed a performance increase of around factor 13000. As there is no get_last() function for idr structures: Implement a "get_last()" using a binary search. As far as I see, ipc is the only user that needs get_last(), thus implement it in ipc/util.c and not in a central location. [akpm@linux-foundation.org: tweak comment, fix typo] Link: https://lkml.kernel.org/r/20210425075208.11777-2-manfred@colorfullife.com Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Acked-by: Davidlohr Bueso <dbueso@suse.de> Cc: <1vier1@web.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:07 UTC
17d056e Manfred Spraul 01 July 2021, 01:57:15 UTC ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock The patch solves three weaknesses in ipc/sem.c: 1) The initial read of use_global_lock in sem_lock() is an intentional race. KCSAN detects these accesses and prints a warning. 2) The code assumes that plain C read/writes are not mangled by the CPU or the compiler. 3) The comment it sysvipc_sem_proc_show() was hard to understand: The rest of the comments in ipc/sem.c speaks about sem_perm.lock, and suddenly this function speaks about ipc_lock_object(). To solve 1) and 2), use READ_ONCE()/WRITE_ONCE(). Plain C reads are used in code that owns sma->sem_perm.lock. The comment is updated to solve 3) [manfred@colorfullife.com: use READ_ONCE()/WRITE_ONCE() for use_global_lock] Link: https://lkml.kernel.org/r/20210627161919.3196-3-manfred@colorfullife.com Link: https://lkml.kernel.org/r/20210514175319.12195-1-manfred@colorfullife.com Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Davidlohr Bueso <dbueso@suse.de> Cc: <1vier1@web.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:07 UTC
bc8136a Vasily Averin 01 July 2021, 01:57:12 UTC ipc: use kmalloc for msg_queue and shmid_kernel msg_queue and shmid_kernel are quite small objects, no need to use kvmalloc for them. mhocko@: "Both of them are 256B on most 64b systems." Previously these objects was allocated via ipc_alloc/ipc_rcu_alloc(), common function for several ipc objects. It had kvmalloc call inside(). Later, this function went away and was finally replaced by direct kvmalloc call, and now we can use more suitable kmalloc/kfree for them. Link: https://lkml.kernel.org/r/0d0b6c9b-8af3-29d8-34e2-a565c53780f3@virtuozzo.com Reported-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:07 UTC
fc37a3b Vasily Averin 01 July 2021, 01:57:09 UTC ipc sem: use kvmalloc for sem_undo allocation Patch series "ipc: allocations cleanup", v2. Some ipc objects use the wrong allocation functions: small objects can use kmalloc(), and vice versa, potentially large objects can use kmalloc(). This patch (of 2): Size of sem_undo can exceed one page and with the maximum possible nsems = 32000 it can grow up to 64Kb. Let's switch its allocation to kvmalloc to avoid user-triggered disruptive actions like OOM killer in case of high-order memory shortage. User triggerable high order allocations are quite a problem on heavily fragmented systems. They can be a DoS vector. Link: https://lkml.kernel.org/r/ebc3ac79-3190-520d-81ce-22ad194986ec@virtuozzo.com Link: https://lkml.kernel.org/r/a6354fd9-2d55-2e63-dd4d-fa7dc1d11134@virtuozzo.com Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: Roman Gushchin <guro@fb.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Dmitry Safonov <0x7f454c46@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:07 UTC
3b52348 Yu Kuai 01 July 2021, 01:57:06 UTC lib/decompressors: remove set but not used variabled 'level' Fixes gcc '-Wunused-but-set-variable' warning: lib/decompress_unlzo.c:46:5: warning: variable `level' set but not used [-Wunused-but-set-variable] It is never used and so can be removed. [akpm@linux-foundation.org: warning: value computed is not used] Link: https://lkml.kernel.org/r/20210514062050.3532344-1-yukuai3@huawei.com Fixes: 7dd65feb6c60 ("lib: add support for LZO-compressed kernels") Signed-off-by: Yu Kuai <yukuai3@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:06 UTC
d892454 Dave Hansen 01 July 2021, 01:57:03 UTC selftests/vm/pkeys: exercise x86 XSAVE init state On x86, there is a set of instructions used to save and restore register state collectively known as the XSAVE architecture. There are about a dozen different features managed with XSAVE. The protection keys register, PKRU, is one of those features. The hardware optimizes XSAVE by tracking when the state has not changed from its initial (init) state. In this case, it can avoid the cost of writing state to memory (it would usually just be a bunch of 0's). When the pkey register is 0x0 the hardware optionally choose to track the register as being in the init state (optimize away the writes). AMD CPUs do this more aggressively compared to Intel. On x86, PKRU is rarely in its (very permissive) init state. Instead, the value defaults to something very restrictive. It is not surprising that bugs have popped up in the rare cases when PKRU reaches its init state. Add a protection key selftest which gets the protection keys register into its init state in a way that should work on Intel and AMD. Then, do a bunch of pkey register reads to watch for inadvertent changes. This adds "-mxsave" to CFLAGS for all the x86 vm selftests in order to allow use of the XSAVE instruction __builtin functions. This will make the builtins available on all of the vm selftests, but is expected to be harmless. Link: https://lkml.kernel.org/r/20210611164202.1849B712@viggo.jf.intel.com Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:06 UTC
6039ca2 Dave Hansen 01 July 2021, 01:56:59 UTC selftests/vm/pkeys: refill shadow register after implicit kernel write The pkey test code keeps a "shadow" of the pkey register around. This ensures that any bugs which might write to the register can be caught more quickly. Generally, userspace has a good idea when the kernel is going to write to the register. For instance, alloc_pkey() is passed a permission mask. The caller of alloc_pkey() can update the shadow based on the return value and the mask. But, the kernel can also modify the pkey register in a more sneaky way. For mprotect(PROT_EXEC) mappings, the kernel will allocate a pkey and write the pkey register to create an execute-only mapping. The kernel never tells userspace what key it uses for this. This can cause the test to fail with messages like: protection_keys_64.2: pkey-helpers.h:132: _read_pkey_reg: Assertion `pkey_reg == shadow_pkey_reg' failed. because the shadow was not updated with the new kernel-set value. Forcibly update the shadow value immediately after an mprotect(). Link: https://lkml.kernel.org/r/20210611164200.EF76AB73@viggo.jf.intel.com Fixes: 6af17cf89e99 ("x86/pkeys/selftests: Add PROT_EXEC test") Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:06 UTC
bf68294 Dave Hansen 01 July 2021, 01:56:56 UTC selftests/vm/pkeys: handle negative sys_pkey_alloc() return code The alloc_pkey() sefltest function wraps the sys_pkey_alloc() system call. On success, it updates its "shadow" register value because sys_pkey_alloc() updates the real register. But, the success check is wrong. pkey_alloc() considers any non-zero return code to indicate success where the pkey register will be modified. This fails to take negative return codes into account. Consider only a positive return value as a successful call. Link: https://lkml.kernel.org/r/20210611164157.87AB4246@viggo.jf.intel.com Fixes: 5f23f6d082a9 ("x86/pkeys: Add self-tests") Reported-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:06 UTC
f36ef40 Dave Hansen 01 July 2021, 01:56:53 UTC selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random Patch series "selftests/vm/pkeys: Bug fixes and a new test". There has been a lot of activity on the x86 front around the XSAVE architecture which is used to context-switch processor state (among other things). In addition, AMD has recently joined the protection keys club by adding processor support for PKU. The AMD implementation helped uncover a kernel bug around the PKRU "init state", which actually applied to Intel's implementation but was just harder to hit. This series adds a test which is expected to help find this class of bug both on AMD and Intel. All the work around pkeys on x86 also uncovered a few bugs in the selftest. This patch (of 4): The "random" pkey allocation code currently does the good old: srand((unsigned int)time(NULL)); *But*, it unfortunately does this on every random pkey allocation. There may be thousands of these a second. time() has a one second resolution. So, each time alloc_random_pkey() is called, the PRNG is *RESET* to time(). This is nasty. Normally, if you do: srand(<ANYTHING>); foo = rand(); bar = rand(); You'll be quite guaranteed that 'foo' and 'bar' are different. But, if you do: srand(1); foo = rand(); srand(1); bar = rand(); You are quite guaranteed that 'foo' and 'bar' are the *SAME*. The recent "fix" effectively forced the test case to use the same "random" pkey for the whole test, unless the test run crossed a second boundary. Only run srand() once at program startup. This explains some very odd and persistent test failures I've been seeing. Link: https://lkml.kernel.org/r/20210611164153.91B76FB8@viggo.jf.intel.com Link: https://lkml.kernel.org/r/20210611164155.192D00FF@viggo.jf.intel.com Fixes: 6e373263ce07 ("selftests/vm/pkeys: fix alloc_random_pkey() to make it really random") Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Ram Pai <linuxram@us.ibm.com> Cc: Sandipan Das <sandipan@linux.ibm.com> Cc: Florian Weimer <fweimer@redhat.com> Cc: "Desnes A. Nunes do Rosario" <desnesn@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Suchanek <msuchanek@suse.de> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:06 UTC
540540d Marco Elver 01 July 2021, 01:56:49 UTC kcov: add __no_sanitize_coverage to fix noinstr for all architectures Until now no compiler supported an attribute to disable coverage instrumentation as used by KCOV. To work around this limitation on x86, noinstr functions have their coverage instrumentation turned into nops by objtool. However, this solution doesn't scale automatically to other architectures, such as arm64, which are migrating to use the generic entry code. Clang [1] and GCC [2] have added support for the attribute recently. [1] https://github.com/llvm/llvm-project/commit/280333021e9550d80f5c1152a34e33e81df1e178 [2] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=cec4d4a6782c9bd8d071839c50a239c49caca689 The changes will appear in Clang 13 and GCC 12. Add __no_sanitize_coverage for both compilers, and add it to noinstr. Note: In the Clang case, __has_feature(coverage_sanitizer) is only true if the feature is enabled, and therefore we do not require an additional defined(CONFIG_KCOV) (like in the GCC case where __has_attribute(..) is always true) to avoid adding redundant attributes to functions if KCOV is off. That being said, compilers that support the attribute will not generate errors/warnings if the attribute is redundantly used; however, where possible let's avoid it as it reduces preprocessed code size and associated compile-time overheads. [elver@google.com: Implement __has_feature(coverage_sanitizer) in Clang] Link: https://lkml.kernel.org/r/20210527162655.3246381-1-elver@google.com [elver@google.com: add comment explaining __has_feature() in Clang] Link: https://lkml.kernel.org/r/20210527194448.3470080-1-elver@google.com Link: https://lkml.kernel.org/r/20210525175819.699786-1-elver@google.com Signed-off-by: Marco Elver <elver@google.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Will Deacon <will@kernel.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Cc: Arvind Sankar <nivedita@alum.mit.edu> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 01 July 2021, 18:06:06 UTC
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