| 655042c | Vivek Goyal | 14 October 2016, 01:03:36 UTC | overlayfs: Fix setting IOP_XATTR flag ovl_fill_super calls ovl_new_inode to create a root inode for the new superblock before initializing sb->s_xattr. This wrongly causes IOP_XATTR to be cleared in i_opflags of the new inode, causing SELinux to log the following message: SELinux: (dev overlay, type overlay) has no xattr support Fix this by initializing sb->s_xattr and similar fields before calling ovl_new_inode. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> | 15 October 2016, 00:00:34 UTC |
| ffecee4 | Vegard Nossum | 08 October 2016, 09:18:07 UTC | iov_iter: kernel-doc import_iovec() and rw_copy_check_uvector() Both import_iovec() and rw_copy_check_uvector() take an array (typically small and on-stack) which is used to hold an iovec array copy from userspace. This is to avoid an expensive memory allocation in the fast path (i.e. few iovec elements). The caller may have to check whether these functions actually used the provided buffer or allocated a new one -- but this differs between the too. Let's just add a kernel doc to clarify what the semantics are for each function. Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> | 15 October 2016, 00:00:34 UTC |
| de34f4d | Linus Torvalds | 11 October 2016, 20:22:22 UTC | Merge tag 'media/v4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - Documentation improvements: conversion of all non-DocBook documents to Sphinx and lots of fixes to the uAPI media book - New PCI driver for Techwell TW5864 media grabber boards - New SoC driver for ATMEL Image Sensor Controller - Removal of some obsolete SoC drivers (s5p-tv driver and soc_camera drivers) - Addition of ST CEC driver - Lots of drivers fixes, improvements and additions * tag 'media/v4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (464 commits) [media] ttusb_dec: avoid the risk of go past buffer [media] cx23885: Fix some smatch warnings [media] si2165: switch to regmap [media] si2165: use i2c_client->dev instead of i2c_adapter->dev for logging [media] si2165: Remove legacy attach [media] cx231xx: attach si2165 driver via i2c_client [media] cx231xx: Prepare for attaching new style i2c_client DVB demod drivers [media] cx23885: attach si2165 driver via i2c_client [media] si2165: support i2c_client attach [media] si2165: avoid division by zero [media] rcar-vin: add R-Car gen2 fallback compatibility string [media] lgdt3306a: remove 20*50 msec unnecessary timeout [media] cx25821: Remove deprecated create_singlethread_workqueue [media] cx25821: Drop Freeing of Workqueue [media] cxd2841er: force 8MHz bandwidth for DVB-C if specified bw not supported [media] redrat3: hardware-specific parameters [media] redrat3: remove hw_timeout member [media] cxd2841er: BER and SNR reading for ISDB-T [media] dvb-usb: avoid link error with dib3000m{b,c| [media] dvb-usb: split out common parts of dibusb ... | 11 October 2016, 20:22:22 UTC |
| 56e520c | Linus Torvalds | 11 October 2016, 19:52:41 UTC | Merge tag 'iommu-updates-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull IOMMU updates from Joerg Roedel: - support for interrupt virtualization in the AMD IOMMU driver. These patches were shared with the KVM tree and are already merged through that tree. - generic DT-binding support for the ARM-SMMU driver. With this the driver now makes use of the generic DMA-API code. This also required some changes outside of the IOMMU code, but these are acked by the respective maintainers. - more cleanups and fixes all over the place. * tag 'iommu-updates-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (40 commits) iommu/amd: No need to wait iommu completion if no dte irq entry change iommu/amd: Free domain id when free a domain of struct dma_ops_domain iommu/amd: Use standard bitmap operation to set bitmap iommu/amd: Clean up the cmpxchg64 invocation iommu/io-pgtable-arm: Check for v7s-incapable systems iommu/dma: Avoid PCI host bridge windows iommu/dma: Add support for mapping MSIs iommu/arm-smmu: Set domain geometry iommu/arm-smmu: Wire up generic configuration support Docs: dt: document ARM SMMU generic binding usage iommu/arm-smmu: Convert to iommu_fwspec iommu/arm-smmu: Intelligent SMR allocation iommu/arm-smmu: Add a stream map entry iterator iommu/arm-smmu: Streamline SMMU data lookups iommu/arm-smmu: Refactor mmu-masters handling iommu/arm-smmu: Keep track of S2CR state iommu/arm-smmu: Consolidate stream map entry state iommu/arm-smmu: Handle stream IDs more dynamically iommu/arm-smmu: Set PRIVCFG in stage 1 STEs iommu/arm-smmu: Support non-PCI devices with SMMUv3 ... | 11 October 2016, 19:52:41 UTC |
| d09ba13 | Linus Torvalds | 11 October 2016, 19:19:31 UTC | Merge tag 'libnvdimm-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: "Aside from the recently added pmem sub-division support these have been in -next for several releases with no reported issues. The sub- division support was included in next-20161010 with no reported issues. It passes all unit tests including new tests for all the new functionality below. Summary: - PMEM sub-division support: Allow a single PMEM region to be divided into multiple namespaces. Originally, ~2 years ago, it was thought that partitions of a /dev/pmemX block device could handle sub-allocations of persistent memory for different use cases. With the decision to not support DAX mappings of raw block-devices, and the genesis of device-dax, the need for having multiple pmem-namespace per region has grown. - Device-DAX unified inode: In support of dynamic-resizing of a device-dax instance the kernel arranges for all mappings of a device-dax node to share the same inode. This allows unmap / truncate / invalidation events to affect all instances of the device similar to the behavior of mmap on block devices. - Hardware error scrubbing reworks: The original address-range-scrub and badblocks tracking solution allowed clearing entries at the individual namespace level, but it failed to clear the internal list of media errors maintained at the bus level. The result was that the next scrub or namespace disable/re-enable event would restore the cleared badblocks, but now that is fixed. The v4.8 kernel introduced an auto-scrub-on-machine-check behavior to repopulate the badblocks list. Now, in v4.9, the auto-scrub behavior can be disabled and simply arrange for the error reported in the machine-check to be added to the list. - DIMM health-event notification support: ACPI 6.1 defines a notification event code that can be send to ACPI NVDIMM devices. A poll(2) capable file descriptor for these events can be obtained from the nmemX/nfit/flags sysfs-attribute of a libnvdimm memory device. - Miscellaneous fixes: NVDIMM-N probe error, device-dax build error, and a change to dedup the flush hint list to not flush the memory controller more than necessary" * tag 'libnvdimm-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (39 commits) /dev/dax: fix Kconfig dependency build breakage dax: use correct dev_t value dax: convert devm_create_dax_dev to PTR_ERR libnvdimm, namespace: allow creation of multiple pmem-namespaces per region libnvdimm, namespace: lift single pmem limit in scan_labels() libnvdimm, namespace: filter out of range labels in scan_labels() libnvdimm, namespace: enable allocation of multiple pmem namespaces libnvdimm, namespace: update label implementation for multi-pmem libnvdimm, namespace: expand pmem device naming scheme for multi-pmem libnvdimm, region: update nd_region_available_dpa() for multi-pmem support libnvdimm, namespace: sort namespaces by dpa at init libnvdimm, namespace: allow multiple pmem-namespaces per region at scan time tools/testing/nvdimm: support for sub-dividing a pmem region libnvdimm, namespace: unify blk and pmem label scanning libnvdimm, namespace: refactor uuid_show() into a namespace_to_uuid() helper libnvdimm, label: convert label tracking to a linked list libnvdimm, region: move region-mapping input-paramters to nd_mapping_desc nvdimm: reduce duplicated wpq flushes libnvdimm: clear the internal poison_list when clearing badblocks pmem: reduce kmap_atomic sections to the memcpys only ... | 11 October 2016, 19:19:31 UTC |
| f29135b | Linus Torvalds | 11 October 2016, 18:23:06 UTC | Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs Pull btrfs updates from Chris Mason: "This is a big variety of fixes and cleanups. Liu Bo continues to fixup fuzzer related problems, and some of Josef's cleanups are prep for his bigger extent buffer changes (slated for v4.10)" * 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (39 commits) Revert "btrfs: let btrfs_delete_unused_bgs() to clean relocated bgs" Btrfs: remove unnecessary btrfs_mark_buffer_dirty in split_leaf Btrfs: don't BUG() during drop snapshot btrfs: fix btrfs_no_printk stub helper Btrfs: memset to avoid stale content in btree leaf btrfs: parent_start initialization cleanup btrfs: Remove already completed TODO comment btrfs: Do not reassign count in btrfs_run_delayed_refs btrfs: fix a possible umount deadlock Btrfs: fix memory leak in do_walk_down btrfs: btrfs_debug should consume fs_info when DEBUG is not defined btrfs: convert send's verbose_printk to btrfs_debug btrfs: convert pr_* to btrfs_* where possible btrfs: convert printk(KERN_* to use pr_* calls btrfs: unsplit printed strings btrfs: clean the old superblocks before freeing the device Btrfs: kill BUG_ON in run_delayed_tree_ref Btrfs: don't leak reloc root nodes on error btrfs: squash lines for simple wrapper functions Btrfs: improve check_node to avoid reading corrupted nodes ... | 11 October 2016, 18:23:06 UTC |
| 4c60992 | Linus Torvalds | 11 October 2016, 17:49:44 UTC | Merge tag 'upstream-4.9-rc1' of git://git.infradead.org/linux-ubifs Pull UBI/UBIFS updates from Richard Weinberger: "This pull request contains: - Fixes for both UBI and UBIFS - overlayfs support (O_TMPFILE, RENAME_WHITEOUT/EXCHANGE) - Code refactoring for the upcoming MLC support" [ Ugh, we just got rid of the "rename2()" naming for the extended rename functionality. And this re-introduces it in ubifs with the cross- renaming and whiteout support. But rather than do any re-organizations in the merge itself, the naming can be cleaned up later ] * tag 'upstream-4.9-rc1' of git://git.infradead.org/linux-ubifs: (27 commits) UBIFS: improve function-level documentation ubifs: fix host xattr_len when changing xattr ubifs: Use move variable in ubifs_rename() ubifs: Implement RENAME_EXCHANGE ubifs: Implement RENAME_WHITEOUT ubifs: Implement O_TMPFILE ubi: Fix Fastmap's update_vol() ubi: Fix races around ubi_refill_pools() ubi: Deal with interrupted erasures in WL UBI: introduce the VID buffer concept UBI: hide EBA internals UBI: provide an helper to query LEB information UBI: provide an helper to check whether a LEB is mapped or not UBI: add an helper to check lnum validity UBI: simplify LEB write and atomic LEB change code UBI: simplify recover_peb() code UBI: move the global ech and vidh variables into struct ubi_attach_info UBI: provide helpers to allocate and free aeb elements UBI: fastmap: use ubi_io_{read, write}_data() instead of ubi_io_{read, write}() UBI: fastmap: use ubi_rb_for_each_entry() in unmap_peb() ... | 11 October 2016, 17:49:44 UTC |
| 1689c73 | Al Viro | 11 October 2016, 17:21:14 UTC | Fix off-by-one in __pipe_get_pages() it actually worked only when requested area ended on the page boundary... Reported-by: Marco Grassi <marco.gra@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 11 October 2016, 17:40:01 UTC |
| 6b5e09a | Linus Torvalds | 11 October 2016, 15:10:19 UTC | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net Pull networking fixes from David Miller: 1) Netfilter list handling fix, from Linus. 2) RXRPC/AFS bug fixes from David Howells (oops on call to serviceless endpoints, build warnings, missing notifications, etc.) From David Howells. 3) Kernel log message missing newlines, from Colin Ian King. 4) Don't enter direct reclaim in netlink dumps, the idea is to use a high order allocation first and fallback quickly to a 0-order allocation if such a high-order one cannot be done cheaply and without reclaim. From Eric Dumazet. 5) Fix firmware download errors in btusb bluetooth driver, from Ethan Hsieh. 6) Missing Kconfig deps for QCOM_EMAC, from Geert Uytterhoeven. 7) Fix MDIO_XGENE dup Kconfig entry. From Laura Abbott. 8) Constrain ipv6 rtr_solicits sysctl values properly, from Maciej Żenczykowski. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (65 commits) netfilter: Fix slab corruption. be2net: Enable VF link state setting for BE3 be2net: Fix TX stats for TSO packets be2net: Update Copyright string in be_hw.h be2net: NCSI FW section should be properly updated with ethtool for BE3 be2net: Provide an alternate way to read pf_num for BEx chips wan/fsl_ucc_hdlc: Fix size used in dma_free_coherent() net: macb: NULL out phydev after removing mdio bus xen-netback: make sure that hashes are not send to unaware frontends Fixing a bug in team driver due to incorrect 'unsigned int' to 'int' conversion MAINTAINERS: add myself as a maintainer of xen-netback ipv6 addrconf: disallow rtr_solicits < -1 Bluetooth: btusb: Fix atheros firmware download error drivers: net: phy: Correct duplicate MDIO_XGENE entry ethernet: qualcomm: QCOM_EMAC should depend on HAS_DMA and HAS_IOMEM net: ethernet: mediatek: remove hwlro property in the device tree net: ethernet: mediatek: get hw lro capability by the chip id instead of by the dtsi net: ethernet: mediatek: get the chip id by ETHDMASYS registers net: bgmac: Fix errant feature flag check netlink: do not enter direct reclaim from netlink_dump() ... | 11 October 2016, 15:10:19 UTC |
| bd3769b | Linus Torvalds | 11 October 2016, 05:39:04 UTC | netfilter: Fix slab corruption. Use the correct pattern for singly linked list insertion and deletion. We can also calculate the list head outside of the mutex. Fixes: e3b37f11e6e4 ("netfilter: replace list_head with single linked list") Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Aaron Conole <aconole@bytheb.org> Signed-off-by: David S. Miller <davem@davemloft.net> net/netfilter/core.c | 108 ++++++++++++++++----------------------------------- 1 file changed, 33 insertions(+), 75 deletions(-) | 11 October 2016, 08:44:37 UTC |
| 101105b | Linus Torvalds | 11 October 2016, 03:16:43 UTC | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more vfs updates from Al Viro: ">rename2() work from Miklos + current_time() from Deepa" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: Replace current_fs_time() with current_time() fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps fs: Replace CURRENT_TIME with current_time() for inode timestamps fs: proc: Delete inode time initializations in proc_alloc_inode() vfs: Add current_time() api vfs: add note about i_op->rename changes to porting fs: rename "rename2" i_op to "rename" vfs: remove unused i_op->rename fs: make remaining filesystems use .rename2 libfs: support RENAME_NOREPLACE in simple_rename() fs: support RENAME_NOREPLACE for local filesystems ncpfs: fix unused variable warning | 11 October 2016, 03:16:43 UTC |
| 3873691 | Al Viro | 11 October 2016, 03:02:51 UTC | Merge remote-tracking branch 'ovl/rename2' into for-linus | 11 October 2016, 03:02:51 UTC |
| 35ff96d | Linus Torvalds | 11 October 2016, 00:39:51 UTC | Merge tag 'for-linus-20161008' of git://git.infradead.org/linux-mtd Pull MTD updates from Brian Norris: "I've not been very active this cycle, so these are mostly from Boris, for the NAND flash subsystem. NAND: - Add the infrastructure to automate NAND timings configuration - Provide a generic DT property to maximize ECC strength - Some refactoring in the core bad block table handling, to help with improving some of the logic in error cases. - Minor cleanups and fixes MTD: - Add APIs for handling page pairing; this is necessary for reliably supporting MLC and TLC NAND flash, where paired-page disturbance affects reliability. Upper layers (e.g., UBI) should make use of these in the near future" * tag 'for-linus-20161008' of git://git.infradead.org/linux-mtd: (35 commits) mtd: nand: fix trivial spelling error mtdpart: Propagate _get/put_device() mtd: nand: Provide nand_cleanup() function to free NAND related resources mtd: Kill the OF_MTD Kconfig option mtd: nand: mxc: Test CONFIG_OF instead of CONFIG_OF_MTD mtd: nand: Fix nand_command_lp() for 8bits opcodes mtd: nand: sunxi: Support ECC maximization mtd: nand: Support maximizing ECC when using software BCH mtd: nand: Add an option to maximize the ECC strength mtd: nand: mxc: Add timing setup for v2 controllers mtd: nand: mxc: implement onfi get/set features mtd: nand: sunxi: switch from manual to automated timing config mtd: nand: automate NAND timings selection mtd: nand: Expose data interface for ONFI mode 0 mtd: nand: Add function to convert ONFI mode to data_interface mtd: nand: convert ONFI mode into data interface mtd: nand: Introduce nand_data_interface mtd: nand: Create a NAND reset function mtd: nand: remove unnecessary 'extern' from function declarations MAINTAINERS: Add maintainer entry for Ingenic JZ4780 NAND driver ... | 11 October 2016, 00:39:51 UTC |
| 97d2116 | Linus Torvalds | 11 October 2016, 00:11:50 UTC | Merge branch 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs xattr updates from Al Viro: "xattr stuff from Andreas This completes the switch to xattr_handler ->get()/->set() from ->getxattr/->setxattr/->removexattr" * 'work.xattr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: vfs: Remove {get,set,remove}xattr inode operations xattr: Stop calling {get,set,remove}xattr inode operations vfs: Check for the IOP_XATTR flag in listxattr xattr: Add __vfs_{get,set,remove}xattr helpers libfs: Use IOP_XATTR flag for empty directory handling vfs: Use IOP_XATTR flag for bad-inode handling vfs: Add IOP_XATTR inode operations flag vfs: Move xattr_resolve_name to the front of fs/xattr.c ecryptfs: Switch to generic xattr handlers sockfs: Get rid of getxattr iop sockfs: getxattr: Fail with -EOPNOTSUPP for invalid attribute names kernfs: Switch to generic xattr handlers hfs: Switch to generic xattr handlers jffs2: Remove jffs2_{get,set,remove}xattr macros xattr: Remove unnecessary NULL attribute name check | 11 October 2016, 00:11:50 UTC |
| 30066ce | Linus Torvalds | 10 October 2016, 21:04:16 UTC | Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "Here is the crypto update for 4.9: API: - The crypto engine code now supports hashes. Algorithms: - Allow keys >= 2048 bits in FIPS mode for RSA. Drivers: - Memory overwrite fix for vmx ghash. - Add support for building ARM sha1-neon in Thumb2 mode. - Reenable ARM ghash-ce code by adding import/export. - Reenable img-hash by adding import/export. - Add support for multiple cores in omap-aes. - Add little-endian support for sha1-powerpc. - Add Cavium HWRNG driver for ThunderX SoC" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (137 commits) crypto: caam - treat SGT address pointer as u64 crypto: ccp - Make syslog errors human-readable crypto: ccp - clean up data structure crypto: vmx - Ensure ghash-generic is enabled crypto: testmgr - add guard to dst buffer for ahash_export crypto: caam - Unmap region obtained by of_iomap crypto: sha1-powerpc - little-endian support crypto: gcm - Fix IV buffer size in crypto_gcm_setkey crypto: vmx - Fix memory corruption caused by p8_ghash crypto: ghash-generic - move common definitions to a new header file crypto: caam - fix sg dump hwrng: omap - Only fail if pm_runtime_get_sync returns < 0 crypto: omap-sham - shrink the internal buffer size crypto: omap-sham - add support for export/import crypto: omap-sham - convert driver logic to use sgs for data xmit crypto: omap-sham - change the DMA threshold value to a define crypto: omap-sham - add support functions for sg based data handling crypto: omap-sham - rename sgl to sgl_tmp for deprecation crypto: omap-sham - align algorithms on word offset crypto: omap-sham - add context export/import stubs ... | 10 October 2016, 21:04:16 UTC |
| 6763afe | Linus Torvalds | 10 October 2016, 20:58:06 UTC | Merge tag 'dlm-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm Pull dlm fix from David Teigland: "This includes a bug fix for a bad memory access during workqueue cleanup, which can happen while shutting down the dlm networking layer" * tag 'dlm-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm: dlm: free workqueues after the connections | 10 October 2016, 20:58:06 UTC |
| 8dfb790 | Linus Torvalds | 10 October 2016, 20:52:05 UTC | Merge tag 'ceph-for-4.9-rc1' of git://github.com/ceph/ceph-client Pull Ceph updates from Ilya Dryomov: "The big ticket item here is support for rbd exclusive-lock feature, with maintenance operations offloaded to userspace (Douglas Fuller, Mike Christie and myself). Another block device bullet is a series fixing up layering error paths (myself). On the filesystem side, we've got patches that improve our handling of buffered vs dio write races (Neil Brown) and a few assorted fixes from Zheng. Also included a couple of random cleanups and a minor CRUSH update" * tag 'ceph-for-4.9-rc1' of git://github.com/ceph/ceph-client: (39 commits) crush: remove redundant local variable crush: don't normalize input of crush_ln iteratively libceph: ceph_build_auth() doesn't need ceph_auth_build_hello() libceph: use CEPH_AUTH_UNKNOWN in ceph_auth_build_hello() ceph: fix description for rsize and rasize mount options rbd: use kmalloc_array() in rbd_header_from_disk() ceph: use list_move instead of list_del/list_add ceph: handle CEPH_SESSION_REJECT message ceph: avoid accessing / when mounting a subpath ceph: fix mandatory flock check ceph: remove warning when ceph_releasepage() is called on dirty page ceph: ignore error from invalidate_inode_pages2_range() in direct write ceph: fix error handling of start_read() rbd: add rbd_obj_request_error() helper rbd: img_data requests don't own their page array rbd: don't call rbd_osd_req_format_read() for !img_data requests rbd: rework rbd_img_obj_exists_submit() error paths rbd: don't crash or leak on errors in rbd_img_obj_parent_read_full_callback() rbd: move bumping img_request refcount into rbd_obj_request_submit() rbd: mark the original request as done if stat request fails ... | 10 October 2016, 20:52:05 UTC |
| 19c4d2f | Chris Mason | 10 October 2016, 20:43:31 UTC | Revert "btrfs: let btrfs_delete_unused_bgs() to clean relocated bgs" This reverts commit 5d8eb6fe517583f9c6d5b94faf2254a0207a45c9. When we remove devices, we free the device structures. Delaying btfs_remove_chunk() ends up hitting a use-after-free on them. Signed-off-by: Chris Mason <clm@fb.com> | 10 October 2016, 20:43:31 UTC |
| fed41f7 | Linus Torvalds | 10 October 2016, 20:38:49 UTC | Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull splice fixups from Al Viro: "A couple of fixups for interaction of pipe-backed iov_iter with O_DIRECT reads + constification of a couple of primitives in uio.h missed by previous rounds. Kudos to davej - his fuzzing has caught those bugs" * 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: [btrfs] fix check_direct_IO() for non-iovec iterators constify iov_iter_count() and iter_is_iovec() fix ITER_PIPE interaction with direct_IO | 10 October 2016, 20:38:49 UTC |
| abb5a14 | Linus Torvalds | 10 October 2016, 20:04:49 UTC | Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull misc vfs updates from Al Viro: "Assorted misc bits and pieces. There are several single-topic branches left after this (rename2 series from Miklos, current_time series from Deepa Dinamani, xattr series from Andreas, uaccess stuff from from me) and I'd prefer to send those separately" * 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (39 commits) proc: switch auxv to use of __mem_open() hpfs: support FIEMAP cifs: get rid of unused arguments of CIFSSMBWrite() posix_acl: uapi header split posix_acl: xattr representation cleanups fs/aio.c: eliminate redundant loads in put_aio_ring_file fs/internal.h: add const to ns_dentry_operations declaration compat: remove compat_printk() fs/buffer.c: make __getblk_slow() static proc: unsigned file descriptors fs/file: more unsigned file descriptors fs: compat: remove redundant check of nr_segs cachefiles: Fix attempt to read i_blocks after deleting file [ver #2] cifs: don't use memcpy() to copy struct iov_iter get rid of separate multipage fault-in primitives fs: Avoid premature clearing of capabilities fs: Give dentry to inode_change_ok() instead of inode fuse: Propagate dentry down to inode_change_ok() ceph: Propagate dentry down to inode_change_ok() xfs: Propagate dentry down to inode_change_ok() ... | 10 October 2016, 20:04:49 UTC |
| 911f9da | Linus Torvalds | 10 October 2016, 18:34:28 UTC | Merge branch 'pcmcia' of git://git.armlinux.org.uk/~rmk/linux-arm Pull ARM pcmcia updates from Russell King: "These updates lay the foundations for more generic soc_common PCMCIA support, which will result in several of the board specific drivers being elimated. As the dependencies for this are complex, the preliminary work is being submitted now, with the remainder scheduled for the next merge window" * 'pcmcia' of git://git.armlinux.org.uk/~rmk/linux-arm: pcmcia: soc_common: add driver-data pointer pcmcia: soc_common: add support for voltage sense GPIOs pcmcia: soc_common: constify pcmcia_low_level ops pointer pcmcia: soc_common: switch to a per-socket cpufreq notifier pcmcia: soc_common: add support for Vcc and Vpp regulators pcmcia: soc_common: add CF socket state helper pcmcia: soc_common: restore previous socket state on error pcmcia: soc_common: add support for reset and bus enable GPIOs pcmcia: soc_common: request legacy detect GPIO with active low pcmcia: soc_common: ignore invalid interrupts pcmcia: soc_common: switch to using gpio_descs pcmcia: soc_common: use devm_gpio_request_one() | 10 October 2016, 18:34:28 UTC |
| ae50a84 | Linus Torvalds | 10 October 2016, 18:31:19 UTC | Merge tag 'nios2-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2 Pull nios2 update from Ley Foon Tan: "Use of_property_read_bool() instead of open-coding it" * tag 'nios2-v4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2: nios2: use of_property_read_bool | 10 October 2016, 18:31:19 UTC |
| 057a056 | Linus Torvalds | 10 October 2016, 18:28:35 UTC | Merge tag 'cris-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris Pull CRIS updates from Jesper Nilsson. * tag 'cris-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris: cris: return of class_create should be considered CRIS: defconfig: remove MTDRAM_ABS_POS CRIS v32: remove some double unlocks Fix typos cris: migrate exception table users off module.h and onto extable.h cris: v10: axisflashmap: remove unused ifdefs cris: use generic io.h cris: fix Kconfig mismatch when building with CONFIG_PCI cris: cardbus: fix header include path cris: add dev88_defconfig cris: irq: stop loop from accessing array out of bounds cris: fasttimer: fix mixed declarations and code compile warning cris: intmem: fix pointer comparison compile warning cris: intmem: fix device_initcall compile warning | 10 October 2016, 18:28:35 UTC |
| 93c26d7 | Linus Torvalds | 10 October 2016, 18:01:51 UTC | Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull protection keys syscall interface from Thomas Gleixner: "This is the final step of Protection Keys support which adds the syscalls so user space can actually allocate keys and protect memory areas with them. Details and usage examples can be found in the documentation. The mm side of this has been acked by Mel" * 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/pkeys: Update documentation x86/mm/pkeys: Do not skip PKRU register if debug registers are not used x86/pkeys: Fix pkeys build breakage for some non-x86 arches x86/pkeys: Add self-tests x86/pkeys: Allow configuration of init_pkru x86/pkeys: Default to a restrictive init PKRU pkeys: Add details of system call use to Documentation/ generic syscalls: Wire up memory protection keys syscalls x86: Wire up protection keys system calls x86/pkeys: Allocation/free syscalls x86/pkeys: Make mprotect_key() mask off additional vm_flags mm: Implement new pkey_mprotect() system call x86/pkeys: Add fault handling for PF_PK page fault bit | 10 October 2016, 18:01:51 UTC |
| 5fa0eb0 | Linus Torvalds | 10 October 2016, 17:59:07 UTC | Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 updates from Thomas Gleixner: "A pile of regression fixes and updates: - address the fallout of the patches which made the cpuid - nodeid relation permanent: Handling of invalid APIC ids and preventing pointless warning messages. - force eager FPU when protection keys are enabled. Protection keys are not generating FPU exceptions so they cannot work with the lazy FPU mechanism. - prevent force migration of interrupts which are not part of the CPU vector domain. - handle the fact that APIC ids are not updated in the ACPI/MADT tables on physical CPU hotplug - remove bash-isms from syscall table generator script - use the hypervisor supplied APIC frequency when running on VMware" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/pkeys: Make protection keys an "eager" feature x86/apic: Prevent pointless warning messages x86/acpi: Prevent LAPIC id 0xff from being accounted arch/x86: Handle non enumerated CPU after physical hotplug x86/unwind: Fix oprofile module link error x86/vmware: Skip lapic calibration on VMware x86/syscalls: Remove bash-isms in syscall table generator x86/irq: Prevent force migration of irqs which are not in the vector domain | 10 October 2016, 17:59:07 UTC |
| cd27e45 | Al Viro | 10 October 2016, 17:39:05 UTC | [btrfs] fix check_direct_IO() for non-iovec iterators looking for duplicate ->iov_base makes sense only for iovec-backed iterators; for kvec-backed ones it's pointless, for bvec-backed ones it's pointless and broken on 32bit (we walk through an array of struct bio_vec accessing them as if they were struct iovec; works by accident on 64bit, but on 32bit it'll blow up) and for pipe-backed ones it's pointless and ends up oopsing. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> | 10 October 2016, 17:58:16 UTC |
| b57332b | Al Viro | 10 October 2016, 17:57:37 UTC | constify iov_iter_count() and iter_is_iovec() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> | 10 October 2016, 17:57:37 UTC |
| c3a6902 | Al Viro | 10 October 2016, 17:26:27 UTC | fix ITER_PIPE interaction with direct_IO by making sure we call iov_iter_advance() on original iov_iter even if direct_IO (done on its copy) has returned 0. It's a no-op for old iov_iter flavours and does the right thing (== truncation of the stuff we'd allocated, but not filled) in ITER_PIPE case. Failures (e.g. -EIO) get caught and dealt with by cleanup in generic_file_read_iter(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> | 10 October 2016, 17:36:06 UTC |
| c48ce9f | Linus Torvalds | 10 October 2016, 17:33:58 UTC | Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf tooling updates from Thomas Gleixner: - handle uretprobe placement proper on little endian PPC64 - fix buffer handling in libtraceevent - add a missing pointer derefence in perf probe - fix the build of host tools in cross builds - fix Intel PT timestamp handling - synchronize memcpy, cpufeatures and bpf headers with the kernel headers - support for vendor supplied JSON files describing PMU events - a new set of tool tips - initial work for clang/llvm support - address some style issues found by cppcheck * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (35 commits) tools build: Add feature detection for g++ tools build: Support compiling C++ source file perf top/report: Add tips about a list option perf report/top: Add a tip about system-wide collection from all CPUs perf report/top: Add a tip about source line numbers with overhead tools: Synchronize tools/include/uapi/linux/bpf.h tools: Synchronize tools/arch/x86/include/asm/cpufeatures.h perf bench mem: Sync memcpy assembly sources with the kernel perf jevents: Fix Intel JSON fixed counter conversions tools lib traceevent: Fix kbuffer_read_at_offset() perf intel-pt: Fix MTC timestamp calculation for large MTC periods perf intel-pt: Fix estimated timestamps for cycle-accurate mode perf uretprobe ppc64le: Fix probe location perf pmu-events: Add Skylake frontend MSR support perf pmu-events: Fix fixed counters on Intel perf tools: Make alias matching case-insensitive perf tools: Allow period= in perf stat CPU event descriptions. perf tools: Add README for info on parsing JSON/map files perf list jevents: Add support for event list topics perf list: Support long jevents descriptions ... | 10 October 2016, 17:33:58 UTC |
| 84ed2da | Linus Torvalds | 10 October 2016, 17:29:59 UTC | Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fix from Thomas Gleixner: "A revert of a commit which pointelessly widened a preempt disabled section which in turn caused might_sleep() to trigger. The patch intended to prevent usage of smp_processor_id() in preemptible context, but the usage in that case is fine because the thread is pinned on a single cpu and therefore cannot be migrated off" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "sched/core: Do not use smp_processor_id() with preempt enabled in smpboot_thread_fn()" | 10 October 2016, 17:29:59 UTC |
| daba2b3 | Linus Torvalds | 10 October 2016, 17:24:41 UTC | Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Thomas Gleixner: "Two small kerneldoc fixes from Julia Lawall" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/metag-ext: Improve function-level documentation irqchip/vic: Improve function-level documentation | 10 October 2016, 17:24:41 UTC |
| 604a830 | Linus Torvalds | 10 October 2016, 17:23:18 UTC | Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fix from Thomas Gleixner: "A single fix for a regression introduced in 4.8 which causes the trace/perf clock to return random nonsense if CONFIG_DEBUG_TIMEKEEPING is set" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: timekeeping: Fix __ktime_get_fast_ns() regression | 10 October 2016, 17:23:18 UTC |
| 5638733 | Linus Torvalds | 10 October 2016, 16:29:50 UTC | Merge branch 'printk-cleanups' Merge my system logging cleanups, triggered by the broken '\n' patches. The line continuation handling has been broken basically forever, and the code to handle the system log records was both confusing and dubious. And it would do entirely the wrong thing unless you always had a terminating newline, partly because it couldn't actually see whether a message was marked KERN_CONT or not (but partly because the LOG_CONT handling in the recording code was rather confusing too). This re-introduces a real semantically meaningful KERN_CONT, and fixes the few places I noticed where it was missing. There are probably more missing cases, since KERN_CONT hasn't actually had any semantic meaning for at least four years (other than the checkpatch meaning of "no log level necessary, this is a continuation line"). This also allows the combination of KERN_CONT and a log level. In that case the log level will be ignored if the merging with a previous line is successful, but if a new record is needed, that new record will now get the right log level. That also means that you can at least in theory combine KERN_CONT with the "pr_info()" style helpers, although any use of pr_fmt() prefixing would make that just result in a mess, of course (the prefix would end up in the middle of a continuing line). * printk-cleanups: printk: make reading the kernel log flush pending lines printk: re-organize log_output() to be more legible printk: split out core logging code into helper function printk: reinstate KERN_CONT for printing continuation lines | 10 October 2016, 16:29:50 UTC |
| 3a8db79 | Marcelo Ricardo Leitner | 08 October 2016, 13:14:37 UTC | dlm: free workqueues after the connections After backporting commit ee44b4bc054a ("dlm: use sctp 1-to-1 API") series to a kernel with an older workqueue which didn't use RCU yet, it was noticed that we are freeing the workqueues in dlm_lowcomms_stop() too early as free_conn() will try to access that memory for canceling the queued works if any. This issue was introduced by commit 0d737a8cfd83 as before it such attempt to cancel the queued works wasn't performed, so the issue was not present. This patch fixes it by simply inverting the free order. Cc: stable@vger.kernel.org Fixes: 0d737a8cfd83 ("dlm: fix race while closing connections") Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David Teigland <teigland@redhat.com> | 10 October 2016, 14:54:00 UTC |
| c3afafa | Herbert Xu | 10 October 2016, 03:19:47 UTC | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Merge the crypto tree to pull in vmx ghash fix. | 10 October 2016, 03:19:47 UTC |
| 24532f7 | Linus Torvalds | 10 October 2016, 00:32:20 UTC | Merge branch 'for-4.9/block-smp' of git://git.kernel.dk/linux-block Pull blk-mq CPU hotplug update from Jens Axboe: "This is the conversion of blk-mq to the new hotplug state machine" * 'for-4.9/block-smp' of git://git.kernel.dk/linux-block: blk-mq: fixup "Convert to new hotplug state machine" blk-mq: Convert to new hotplug state machine blk-mq/cpu-notif: Convert to new hotplug state machine | 10 October 2016, 00:32:20 UTC |
| 12e3d3c | Linus Torvalds | 10 October 2016, 00:29:33 UTC | Merge branch 'for-4.9/block-irq' of git://git.kernel.dk/linux-block Pull blk-mq irq/cpu mapping updates from Jens Axboe: "This is the block-irq topic branch for 4.9-rc. It's mostly from Christoph, and it allows drivers to specify their own mappings, and more importantly, to share the blk-mq mappings with the IRQ affinity mappings. It's a good step towards making this work better out of the box" * 'for-4.9/block-irq' of git://git.kernel.dk/linux-block: blk_mq: linux/blk-mq.h does not include all the headers it depends on blk-mq: kill unused blk_mq_create_mq_map() blk-mq: get rid of the cpumask in struct blk_mq_tags nvme: remove the post_scan callout nvme: switch to use pci_alloc_irq_vectors blk-mq: provide a default queue mapping for PCI device blk-mq: allow the driver to pass in a queue mapping blk-mq: remove ->map_queue blk-mq: only allocate a single mq_map per tag_set blk-mq: don't redistribute hardware queues on a CPU hotplug event | 10 October 2016, 00:29:33 UTC |
| 48915c2 | Linus Torvalds | 10 October 2016, 00:16:18 UTC | Merge tag 'dm-4.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mike Snitzer: - various fixes and cleanups for request-based DM core - add support for delaying the requeue of requests; used by DM multipath when all paths have failed and 'queue_if_no_path' is enabled - DM cache improvements to speedup the loading metadata and the writing of the hint array - fix potential for a dm-crypt crash on device teardown - remove dm_bufio_cond_resched() and just using cond_resched() - change DM multipath to return a reservation conflict error immediately; rather than failing the path and retrying (potentially indefinitely) * tag 'dm-4.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (24 commits) dm mpath: always return reservation conflict without failing over dm bufio: remove dm_bufio_cond_resched() dm crypt: fix crash on exit dm cache metadata: switch to using the new cursor api for loading metadata dm array: introduce cursor api dm btree: introduce cursor api dm cache policy smq: distribute entries to random levels when switching to smq dm cache: speed up writing of the hint array dm array: add dm_array_new() dm mpath: delay the requeue of blk-mq requests while all paths down dm mpath: use dm_mq_kick_requeue_list() dm rq: introduce dm_mq_kick_requeue_list() dm rq: reduce arguments passed to map_request() and dm_requeue_original_request() dm rq: add DM_MAPIO_DELAY_REQUEUE to delay requeue of blk-mq requests dm: convert wait loops to use autoremove_wake_function() dm: use signal_pending_state() in dm_wait_for_completion() dm: rename task state function arguments dm: add two lockdep_assert_held() statements dm rq: simplify dm_old_stop_queue() dm mpath: check if path's request_queue is dying in activate_path() ... | 10 October 2016, 00:16:18 UTC |
| b9044ac | Linus Torvalds | 10 October 2016, 00:04:33 UTC | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull main rdma updates from Doug Ledford: "This is the main pull request for the rdma stack this release. The code has been through 0day and I had it tagged for linux-next testing for a couple days. Summary: - updates to mlx5 - updates to mlx4 (two conflicts, both minor and easily resolved) - updates to iw_cxgb4 (one conflict, not so obvious to resolve, proper resolution is to keep the code in cxgb4_main.c as it is in Linus' tree as attach_uld was refactored and moved into cxgb4_uld.c) - improvements to uAPI (moved vendor specific API elements to uAPI area) - add hns-roce driver and hns and hns-roce ACPI reset support - conversion of all rdma code away from deprecated create_singlethread_workqueue - security improvement: remove unsafe ib_get_dma_mr (breaks lustre in staging)" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (75 commits) staging/lustre: Disable InfiniBand support iw_cxgb4: add fast-path for small REG_MR operations cxgb4: advertise support for FR_NSMR_TPTE_WR IB/core: correctly handle rdma_rw_init_mrs() failure IB/srp: Fix infinite loop when FMR sg[0].offset != 0 IB/srp: Remove an unused argument IB/core: Improve ib_map_mr_sg() documentation IB/mlx4: Fix possible vl/sl field mismatch in LRH header in QP1 packets IB/mthca: Move user vendor structures IB/nes: Move user vendor structures IB/ocrdma: Move user vendor structures IB/mlx4: Move user vendor structures IB/cxgb4: Move user vendor structures IB/cxgb3: Move user vendor structures IB/mlx5: Move and decouple user vendor structures IB/{core,hw}: Add constant for node_desc ipoib: Make ipoib_warn ratelimited IB/mlx4/alias_GUID: Remove deprecated create_singlethread_workqueue IB/ipoib_verbs: Remove deprecated create_singlethread_workqueue IB/ipoib: Remove deprecated create_singlethread_workqueue ... | 10 October 2016, 00:04:33 UTC |
| 1fde76f | Linus Torvalds | 09 October 2016, 23:30:03 UTC | Merge tag 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma Pull more rdma updates from Doug Ledford: "Minor updates for rxe driver" [ Starting to do merge window pulls again - the current -git tree does appear to have some netfilter use-after-free issues, but I've sent off the report to the proper channels, and I don't want to delay merge window activity any more ] * tag 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: IB/rxe: improved debug prints & code cleanup rdma_rxe: Ensure rdma_rxe init occurs at correct time IB/rxe: Properly honor max IRD value for rd/atomic. IB/{rxe,core,rdmavt}: Fix kernel crash for reg MR IB/rxe: Fix sending out loopback packet on netdev interface. IB/rxe: Avoid scheduling tasklet for userspace QP | 09 October 2016, 23:30:03 UTC |
| bfd8d3f | Linus Torvalds | 09 October 2016, 19:16:57 UTC | printk: make reading the kernel log flush pending lines That will mean that any possible subsequent continuation will now be broken up onto a line of its own (since reading the log has finalized the beginning og the line), but if user space has activated system logging (or if there's a kernel message dump going on) that is the right thing to do. And now that we actually get the continuation flags _right_ for this all, the user space logger that is reading the kernel messages can actually see the continuation marker. Not that anybody seems to really bother with it (or care), but in theory user space can do its own message stitching. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 09 October 2016, 19:23:40 UTC |
| 5e46765 | Linus Torvalds | 09 October 2016, 18:53:00 UTC | printk: re-organize log_output() to be more legible Avoid some duplicate logic now that we can return early, and update the comments for the new LOG_CONT world order. This also stops the continuation flushing from just using random record flags for the flushing action, instead taking the flags from the proper original line and updating them as we add continuations to it. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 09 October 2016, 19:23:40 UTC |
| c362c7f | Linus Torvalds | 09 October 2016, 05:02:09 UTC | printk: split out core logging code into helper function The code that actually decides how to log the message (whether to put it directly into the record log, whether to append it to an existing buffered log, or whether to start a new buffered log) is fairly non-obvious code in the middle of the vprintk_emit() function. Splitting that code up into a helper function makes it easier to understand, but perhaps more importantly also allows for the code to just return early out of the helper function once it has made the decision about where the new log content goes. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 09 October 2016, 19:23:39 UTC |
| 4bcc595 | Linus Torvalds | 09 October 2016, 03:32:40 UTC | printk: reinstate KERN_CONT for printing continuation lines Long long ago the kernel log buffer was a buffered stream of bytes, very much like stdio in user space. It supported log levels by scanning the stream and noticing the log level markers at the beginning of each line, but if you wanted to print a partial line in multiple chunks, you just did multiple printk() calls, and it just automatically worked. Except when it didn't, and you had very confusing output when different lines got all mixed up with each other. Then you got fragment lines mixing with each other, or with non-fragment lines, because it was traditionally impossible to tell whether a printk() call was a continuation or not. To at least help clarify the issue of continuation lines, we added a KERN_CONT marker back in 2007 to mark continuation lines: 474925277671 ("printk: add KERN_CONT annotation"). That continuation marker was initially an empty string, and didn't actuall make any semantic difference. But it at least made it possible to annotate the source code, and have check-patch notice that a printk() didn't need or want a log level marker, because it was a continuation of a previous line. To avoid the ambiguity between a continuation line that had that KERN_CONT marker, and a printk with no level information at all, we then in 2009 made KERN_CONT be a real log level marker which meant that we could now reliably tell the difference between the two cases. 5fd29d6ccbc9 ("printk: clean up handling of log-levels and newlines") and we could take advantage of that to make sure we didn't mix up continuation lines with lines that just didn't have any loglevel at all. Then, in 2012, the kernel log buffer was changed to be a "record" based log, where each line was a record that has a loglevel and a timestamp. You can see the beginning of that conversion in commits e11fea92e13f ("kmsg: export printk records to the /dev/kmsg interface") 7ff9554bb578 ("printk: convert byte-buffer to variable-length record buffer") with a number of follow-up commits to fix some painful fallout from that conversion. Over all, it took a couple of months to sort out most of it. But the upside was that you could have concurrent readers (and writers) of the kernel log and not have lines with mixed output in them. And one particular pain-point for the record-based kernel logging was exactly the fragmentary lines that are generated in smaller chunks. In order to still log them as one recrod, the continuation lines need to be attached to the previous record properly. However the explicit continuation record marker that is actually useful for this exact case was actually removed in aroundm the same time by commit 61e99ab8e35a ("printk: remove the now unnecessary "C" annotation for KERN_CONT") due to the incorrect belief that KERN_CONT wasn't meaningful. The ambiguity between "is this a continuation line" or "is this a plain printk with no log level information" was reintroduced, and in fact became an even bigger pain point because there was now the whole record-level merging of kernel messages going on. This patch reinstates the KERN_CONT as a real non-empty string marker, so that the ambiguity is fixed once again. But it's not a plain revert of that original removal: in the four years since we made KERN_CONT an empty string again, not only has the format of the log level markers changed, we've also had some usage changes in this area. For example, some ACPI code seems to use KERN_CONT _together_ with a log level, and now uses both the KERN_CONT marker and (for example) a KERN_INFO marker to show that it's an informational continuation of a line. Which is actually not a bad idea - if the continuation line cannot be attached to its predecessor, without the log level information we don't know what log level to assign to it (and we traditionally just assigned it the default loglevel). So having both a log level and the KERN_CONT marker is not necessarily a bad idea, but it does mean that we need to actually iterate over potentially multiple markers, rather than just a single one. Also, since KERN_CONT was still conceptually needed, and encouraged, but didn't actually _do_ anything, we've also had the reverse problem: rather than having too many annotations it has too few, and there is bit rot with code that no longer marks the continuation lines with the KERN_CONT marker. So this patch not only re-instates the non-empty KERN_CONT marker, it also fixes up the cases of bit-rot I noticed in my own logs. There are probably other cases where KERN_CONT will be needed to be added, either because it is new code that never dealt with the need for KERN_CONT, or old code that has bitrotted without anybody noticing. That said, we should strive to avoid the need for KERN_CONT. It does result in real problems for logging, and should generally not be seen as a good feature. If we some day can get rid of the feature entirely, because nobody does any fragmented printk calls, that would be lovely. But until that point, let's at mark the code that relies on the hacky multi-fragment kernel printk's. Not only does it avoid the ambiguity, it also annotates code as "maybe this would be good to fix some day". (That said, particularly during single-threaded bootup, the downsides of KERN_CONT are very limited. Things get much hairier when you have multiple threads going on and user level reading and writing logs too). Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 09 October 2016, 19:23:38 UTC |
| d24cd73 | David S. Miller | 09 October 2016, 13:30:45 UTC | Merge branch 'be2net-fixes' Sriharsha Basavapatna says: ==================== be2net: patch-set The following patch set contains a few bug fixes. Please consider applying this to the net-next tree. Thanks. Patch-1 Obtains proper PF number for BEx chips Patch-2 Fixes a FW update issue seen with BEx chips Patch-3 Updates copyright string Patch-4 Fixes TX stats for TSO packets Patch-5 Enables VF link state setting for BE3 ==================== Signed-off-by: David S. Miller <davem@davemloft.net> | 09 October 2016, 13:30:45 UTC |
| dc6e851 | Suresh Reddy | 09 October 2016, 04:28:53 UTC | be2net: Enable VF link state setting for BE3 The VF link state setting feature now works on BE3 chips too from FW ver 11.1.192.0 onwards. Signed-off-by: Suresh Reddy <suresh.reddy@broadcom.com> Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 09 October 2016, 13:30:39 UTC |
| f3d6ad8 | Sriharsha Basavapatna | 09 October 2016, 04:28:52 UTC | be2net: Fix TX stats for TSO packets TX stats update does not take into account headers which get duplicated when the TSO packet is split into segments by HW. Fix this for both tunneled (vxlan) and non-tunneled TSO packets. Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 09 October 2016, 13:30:38 UTC |
| 77b696c | Sriharsha Basavapatna | 09 October 2016, 04:28:51 UTC | be2net: Update Copyright string in be_hw.h This patch updates the year and company name in the copyright string in be_hw.h. Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 09 October 2016, 13:30:38 UTC |
| f5ef017 | Sriharsha Basavapatna | 09 October 2016, 04:28:50 UTC | be2net: NCSI FW section should be properly updated with ethtool for BE3 The driver has a check to ensure that NCSI FW section is updated only if the current FW version in the card supports it. This FW version check is done using memcmp() which obviously fails in some cases. Fix this by breaking up the version string into integer version components and comparing them. Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 09 October 2016, 13:30:38 UTC |
| 6ee080b | Sriharsha Basavapatna | 09 October 2016, 04:28:49 UTC | be2net: Provide an alternate way to read pf_num for BEx chips The driver gets the pf_num for Skyhawk and Lancer using GET_FUNC_CONFIG FW command. But since that command is not supported in BEx, we need to get it from some other command. Otherwise TPE recovery would fail since all NIC PFs would end up with a func num of 0. There's a pci function number field in the response of GET_CNTL_ATTRIBUTES command that can be read to get the same info for BEx adapters. Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 09 October 2016, 13:30:38 UTC |
| 69db4aa | Brian Norris | 08 October 2016, 19:23:37 UTC | Merge tag '4.9/mtd-pairing-scheme' of github.com:linux-nand/linux Introduction of the MTD pairing scheme concept. | 09 October 2016, 03:56:54 UTC |
| e55f1d1 | Al Viro | 08 October 2016, 15:06:08 UTC | Merge remote-tracking branch 'jk/vfs' into work.misc | 08 October 2016, 15:06:08 UTC |
| f334bcd | Al Viro | 08 October 2016, 15:00:01 UTC | Merge remote-tracking branch 'ovl/misc' into work.misc | 08 October 2016, 15:00:01 UTC |
| 73e8fb2 | Al Viro | 08 October 2016, 14:44:55 UTC | Merge branch 'work.const-qstr' into work.misc | 08 October 2016, 14:44:55 UTC |
| 33e09f0 | Al Viro | 08 October 2016, 14:44:37 UTC | Merge branch 'work.iget' into work.misc | 08 October 2016, 14:44:37 UTC |
| 2f7c68d | David S. Miller | 08 October 2016, 12:24:37 UTC | Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth Johan Hedberg says: ==================== pull request: bluetooth 2016-10-08 Here are a couple of Bluetooth fixes for the 4.9 kernel: - Firmware download fix for Atheros controllers - Fixes to the content of LE scan response - New USB ID for a Marvell chipset Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> | 08 October 2016, 12:24:37 UTC |
| d4b0592 | Dave Hansen | 07 October 2016, 16:23:42 UTC | x86/pkeys: Make protection keys an "eager" feature Our XSAVE features are divided into two categories: those that generate FPU exceptions, and those that do not. MPX and pkeys do not generate FPU exceptions and thus can not be used lazily. We disable them when lazy mode is forced on. We have a pair of masks to collect these two sets of features, but XFEATURE_MASK_PKRU was added to the wrong mask: XFEATURE_MASK_LAZY. Fix it by moving the feature to XFEATURE_MASK_EAGER. Note: this only causes problem if you boot with lazy FPU mode (eagerfpu=off) which is *not* the default. It also only affects hardware which is not currently publicly available. It looks like eager mode is going away, but we still need this patch applied to any kernel that has protection keys and lazy mode, which is 4.6 through 4.8 at this point, and 4.9 if the lazy removal isn't sent to Linus for 4.9. Fixes: c8df40098451 ("x86/fpu, x86/mm/pkeys: Add PKRU xsave fields and data structures") Signed-off-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave@sr71.net> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/20161007162342.28A49813@viggo.jf.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> | 08 October 2016, 10:26:44 UTC |
| df610d6 | Thomas Gleixner | 07 October 2016, 13:55:13 UTC | x86/apic: Prevent pointless warning messages Markus reported that he sees new warnings: APIC: NR_CPUS/possible_cpus limit of 4 reached. Processor 4/0x84 ignored. APIC: NR_CPUS/possible_cpus limit of 4 reached. Processor 5/0x85 ignored. This comes from the recent persistant cpuid - nodeid changes. The code which emits the warning has been called prior to these changes only for enabled processors. Now it's called for disabled processors as well to get the possible cpu accounting correct. So if the kernel is compiled for the number of actual available/enabled CPUs and the BIOS reports disabled CPUs as well then the above warnings are printed. That's a pointless exercise as it only makes sense if there are more CPUs enabled than the kernel supports. Nake the warning conditional on enabled processors so we are back to the state before these changes. Fixes: 8f54969dc8d6 ("x86/acpi: Introduce persistent storage for cpuid <-> apicid mapping") Reported-and-tested-by: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> Cc: Dou Liyang <douly.fnst@cn.fujitsu.com> Cc: linux-acpi@vger.kernel.org Cc: Gu Zheng <guz.fnst@cn.fujitsu.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1610071549330.19804@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de> | 08 October 2016, 10:18:36 UTC |
| f3bf1db | Thomas Gleixner | 07 October 2016, 12:02:12 UTC | x86/acpi: Prevent LAPIC id 0xff from being accounted Yinghai reported that the recent changes to make the cpuid - nodeid relationship permanent causes a cpuid ordering regression on a system which has 2apic enabled.. The reason is that the ACPI local APIC parser has no sanity check for apicid 0xff, which is an invalid id. So a CPU id for this invalid local APIC id is allocated and therefor breaks the cpuid ordering. Add a sanity check to acpi_parse_lapic() which ignores the invalid id. Fixes: 8f54969dc8d6 ("x86/acpi: Introduce persistent storage for cpuid <-> apicid mapping") Reported-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Gu Zheng <guz.fnst@cn.fujitsu.com>, Cc: Tang Chen <tangchen@cn.fujitsu.com> Cc: douly.fnst@cn.fujitsu.com, Cc: zhugh.fnst@cn.fujitsu.com Cc: Tony Luck <tony.luck@intel.com> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Len Brown <lenb@kernel.org> Cc: Lv Zheng <lv.zheng@intel.com>, Cc: robert.moore@intel.com Cc: linux-acpi@vger.kernel.org Link: https://lkml.kernel.org/r/CAE9FiQVQx6FRXT-RdR7Crz4dg5LeUWHcUSy1KacjR+JgU_vGJg@mail.gmail.com | 08 October 2016, 10:10:52 UTC |
| b66484c | Linus Torvalds | 08 October 2016, 04:38:00 UTC | Merge branch 'akpm' (patches from Andrew) Merge updates from Andrew Morton: - fsnotify updates - ocfs2 updates - all of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (127 commits) console: don't prefer first registered if DT specifies stdout-path cred: simpler, 1D supplementary groups CREDITS: update Pavel's information, add GPG key, remove snail mail address mailmap: add Johan Hovold .gitattributes: set git diff driver for C source code files uprobes: remove function declarations from arch/{mips,s390} spelling.txt: "modeled" is spelt correctly nmi_backtrace: generate one-line reports for idle cpus arch/tile: adopt the new nmi_backtrace framework nmi_backtrace: do a local dump_stack() instead of a self-NMI nmi_backtrace: add more trigger_*_cpu_backtrace() methods min/max: remove sparse warnings when they're nested Documentation/filesystems/proc.txt: add more description for maps/smaps mm, proc: fix region lost in /proc/self/smaps proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self proc: add LSM hook checks to /proc/<tid>/timerslack_ns proc: relax /proc/<tid>/timerslack_ns capability requirements meminfo: break apart a very long seq_printf with #ifdefs seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char proc: faster /proc/*/status ... | 08 October 2016, 04:38:00 UTC |
| c913fc4 | Linus Torvalds | 08 October 2016, 04:34:49 UTC | Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC late DT updates from Arnd Bergmann: "These updates have been kept in a separate branch mostly because they rely on updates to the respective clk drivers to keep the shared header files in sync. - The Renesas r8a7796 (R-Car M3-W) platform gets added, this is an automotive SoC similar to the ⅹ8a7795 chip we already support, but the dts changes rely on a clock driver change that has been merged for v4.9 through the clk tree. - The Amlogic meson-gxbb (S905) platform gains support for a few drivers merged through our tree, in particular the network and usb driver changes are required and included here, and also the clk tree changes. - The Allwinner platforms have seen a large-scale change to their clk drivers and the dts file updates must come after that. This includes the newly added Nextthing GR8 platform, which is derived from sun5i/A13. - Some integrator (arm32) changes rely on clk driver changes. - A single patch for lpc32xx has no such dependency but wasn't added until just before the merge window" * tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (99 commits) ARM: dts: lpc32xx: add device node for IRAM on-chip memory ARM: dts: sun8i: Add accelerometer to polaroid-mid2407pxe03 ARM: dts: sun8i: enable UART1 for iNet D978 Rev2 board ARM: dts: sun8i: add pinmux for UART1 at PG dts: sun8i-h3: add I2C0-2 peripherals to H3 SOC dts: sun8i-h3: add pinmux definitions for I2C0-2 dts: sun8i-h3: associate exposed UARTs on Orange Pi Boards dts: sun8i-h3: split off RTS/CTS for UART1 in seperate pinmux dts: sun8i-h3: add pinmux definitions for UART2-3 ARM: dts: sun9i: a80-optimus: Disable EHCI1 ARM: dts: sun9i: cubieboard4: Add AXP806 PMIC device node and regulators ARM: dts: sun9i: a80-optimus: Add AXP806 PMIC device node and regulators ARM: dts: sun9i: cubieboard4: Declare AXP809 SW regulator as unused ARM: dts: sun9i: a80-optimus: Declare AXP809 SW regulator as unused ARM: dts: sun8i: Add touchscreen node for sun8i-a33-ga10h ARM: dts: sun8i: Add touchscreen node for sun8i-a23-polaroid-mid2809pxe04 ARM: dts: sun8i: Add touchscreen node for sun8i-a23-polaroid-mid2407pxe03 ARM: dts: sun8i: Add touchscreen node for sun8i-a23-inet86dz ARM: dts: sun8i: Add touchscreen node for sun8i-a23-gt90h ARM64: dts: meson-gxbb-vega-s95: Enable USB Nodes ... | 08 October 2016, 04:34:49 UTC |
| a439f8f | Linus Torvalds | 08 October 2016, 04:32:39 UTC | Merge tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM 64-bit DT updates from Arnd Bergmann: "The 64-bit DT changes are surprisingly small this time, we only add two SoC platforms: the ZTE ZX296718 Set-top-box SoC and the SocioNext UniPhier LD11 TV SoC, each with their reference boards. There are three new machines added for existing SoC platforms: - The Marvell Armada 8040 development board is an impressive quad-core Cortex-A72 machine with three 10gbit ethernet interfaces - Qualcomms DragonBoard 820c single-board computer is their current high-end phone platform in the 96boards form factor - Rockchip: Tronsmart Orion r86 set-top-box is a popular mid-range Android box based on the 8-core rk3368 SoC" * tag 'armsoc-dt64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (91 commits) arm64: dts: berlin4ct: Add L2 cache topology arm64: dts: berlin4ct: enable all wdt nodes unconditionally arm64: dts: berlin4ct: switch to Cortex-A53 specific pmu nodes arm64: dts: Add ZTE ZX296718 SoC dts and Makefile arm64: dts: apm: Add DT node for APM X-Gene 2 CPU clocks arm64: dts: apm: Add X-Gene SoC hwmon to device tree arm64: dts: apm: Fix interrupt polarity for X-Gene PCIe legacy interrupts arm64: dts: apm: Add APM X-Gene v2 SoC PMU DTS entries arm64: dts: apm: Add APM X-Gene SoC PMU DTS entries arm64: dts: marvell: enable MSI for PCIe on Armada 7K/8K arm64: dts: ls2080a: Add 'dma-coherent' for ls2080a PCI nodes arm64: dts: rockchip: add Type-C phy for RK3399 arm64: dts: rockchip: enable the gmac for rk3399 evb board arm64: dts: rockchip: add the gmac needed node for rk3399 arm64: dts: rockchip: support the pmu node for rk3399 arm64: dts: rockchip: change all interrupts cells to 4 on rk3399 SoCs arm64: dts: rockchip: add the tcpc for rk3399 power domain arm64: dts: rockchip: add efuse0 device node for rk3399 arm64: dts: rockchip: configure PCIe support for rk3399-evb arm64: dts: rockchip: add the PCIe controller support for RK3399 ... | 08 October 2016, 04:32:39 UTC |
| 00e729c | Linus Torvalds | 08 October 2016, 04:29:04 UTC | Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM DT updates from Arnd Bergmann: "These are as usual a very large number of mostly boring updates to enable devices in existing machines, or to fix minor bugs. Notably, an ongoing treewide effort to fix warnings caused by an update to the device tree compiler. These are enabled with "make W=1" at the moment but can hopefully become the default once all issues have been addressed. No new SoC platform is added this time around (Armada 395 and Orion mv88f5181 are slight variations of existing ones), but a significant number of new dts files are added, which I list by platform: - Allwinner: Empire Electronix M712 and iNet d978 Rev2 tablets, Orange Pi PC Plus, Orange Pi 2, Orange Pi Plus 2E, Orange Pi Lite, Olimex A33-Olinuxino, and Nano Pi Neo single-board computers - ARM Realview: all supported machines (ported from board files) - Broadcom: BCM958525er, BCM958522er, BCM988312hr, BCM958623hr and BCM958622hr reference boards for Northstar platform, Raspberry Pi Zero single-board computer - Marvell EBU: Netgear WNR854T router (ported from board file), Armada 395 SoC platform and GP board Armada 390 DB development board - NXP i.MX: imx7s Warp7 reference board, Gateworks Ventana GW553x single-board computer, Technologic Systems TS-4900 and Engicam IMX6UL GEA M6UL computer-on-module, Inverse Path USB armory board - Qualcomm: LG Nexus 5 Phone - Renesas: r8a7792/wheat and r7s72100/rskrza1 development boards - Rockchip: Rockchip RK3288 Fennec reference board, Firefly RK3288 Reload platform - ST Microelectronics STi: B2260 (96boards) single-board computer - TI Davinci: OMAP-L138 LCDK Development kit - TI OMAP: beagleboard-x15 rev B1 single-board computer" * tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (390 commits) ARM: dts: sony-nsz-gs7: add missing unit name to /memory node ARM: dts: chromecast: add missing unit name to /memory node ARM: dts: berlin2q-marvell-dmp: add missing unit name to /memory node ARM: dts: berlin2: Add missing unit name to /soc node ARM: dts: berlin2cd: Add missing unit name to /soc node ARM: dts: berlin2q: Add missing unit name to /soc node ARM: dts: berlin2: Remove skeleton.dtsi inclusion ARM: dts: berlin2cd: Remove skeleton.dtsi inclusion ARM: dts: berlin2q: Remove skeleton.dtsi inclusion arm: dts: berlin2q: enable all wdt nodes unconditionally arm: dts: berlin2: enable all wdt nodes unconditionally ARM: dts: omap5-igep0050.dts: Use tabs for indentation ARM: dts: Fix igepv5 power button GPIO direction ARM: dts: am335x-evmsk: Add blue-and-red-wiring -property to lcdc node ARM: dts: am335x-evmsk: Whitespace cleanup of lcdc related nodes ARM: dts: am335x-evm: Add blue-and-red-wiring -property to lcdc node ARM: dts: s3c64xx: Use macros for pinctrl configuration ARM: dts: s3c2416: Use macros for pinctrl configuration ARM: dts: s5pv210: Use macros for pinctrl configuration ARM: dts: s3c64xx: Use common macros for pinctrl configuration ... | 08 October 2016, 04:29:04 UTC |
| 6afd563 | Linus Torvalds | 08 October 2016, 04:23:40 UTC | Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Arnd Bergmann: "Driver updates for ARM SoCs, including a couple of newly added drivers: - The Qualcomm external bus interface 2 (EBI2), used in some of their mobile phone chips for connecting flash memory, LCD displays or other peripherals - Secure monitor firmware for Amlogic SoCs, and an NVMEM driver for the EFUSE based on that firmware interface. - Perf support for the AppliedMicro X-Gene performance monitor unit - Reset driver for STMicroelectronics STM32 - Reset driver for SocioNext UniPhier SoCs Aside from these, there are minor updates to SoC-specific bus, clocksource, firmware, pinctrl, reset, rtc and pmic drivers" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (50 commits) bus: qcom-ebi2: depend on HAS_IOMEM pinctrl: mvebu: orion5x: Generalise mv88f5181l support for 88f5181 clk: mvebu: Add clk support for the orion5x SoC mv88f5181 dt-bindings: EXYNOS: Add Exynos5433 PMU compatible clocksource: exynos_mct: Add the support for ARM64 perf: xgene: Add APM X-Gene SoC Performance Monitoring Unit driver Documentation: Add documentation for APM X-Gene SoC PMU DTS binding MAINTAINERS: Add entry for APM X-Gene SoC PMU driver bus: qcom: add EBI2 driver bus: qcom: add EBI2 device tree bindings rtc: rtc-pm8xxx: Add support for pm8018 rtc nvmem: amlogic: Add Amlogic Meson EFUSE driver firmware: Amlogic: Add secure monitor driver soc: qcom: smd: Reset rx tail rather than tx memory: atmel-sdramc: fix a possible NULL dereference reset: hi6220: allow to compile test driver on other architectures reset: zynq: add driver Kconfig option reset: sunxi: add driver Kconfig option reset: stm32: add driver Kconfig option reset: socfpga: add driver Kconfig option ... | 08 October 2016, 04:23:40 UTC |
| b4f33f6 | Linus Torvalds | 08 October 2016, 04:22:01 UTC | Merge tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC 64-bit updates from Arnd Bergmann: "Changes to platform code for 64-bit ARM platforms. Nearly all of these are defconfig updates to enable new drivers or old drivers still used on these 64-bit platforms. Aside from that, we gain initial support for two set-top-box platforms, both of which already have 32-bit support in arch/arm: - Broadcom adds abstract support for the bcm7xxx/brcmstb platform, presumably the respective dts files and more information will follow at a later point. - The ZTE ZX296718 SoC for set-top-boxes, a relative of the 32-bit ZX296702 SoC that we already support" * tag 'armsoc-arm64' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: arm64: add ZTE ZX SoC family arm64: defconfig: enable ZTE ZX related config arm64: defconfig: enable common modules for power management arm64: defconfig: enable meson I2C arm64: defconfig: enable meson SPI as module arm64: defconfig: enable meson WDT as modules arm64: defconfig: enable HW random as module arm64: defconfig: Enable SDHI and GPIO_REGULATOR arm64: configs: enable PCIe driver for Aardvark Kconfig: ARCH_HISI: Add PINCTRL to HISI platform arm64: defconfig: enable bluetooth supports as modules arm64: defconfig: enable CONFIG_INPUT_HISI_POWERKEY for HiKey arm64: defconfig: Enable HiSilicon kirin drm, adv7533 for HiKey arm64: defconfig: Enable Hisi SAS and HNS arm64: defconfig: Enable QDF2432 config options arm64: sunxi: Kconfig: add essential pinctrl driver arm64: defconfig: Add Renesas R-Car HSUSB driver support as module arm64: Add Broadcom Set Top Box Kconfig entry point arm64: defconfig: enable xhci-platform | 08 October 2016, 04:22:01 UTC |
| 5acb605 | Linus Torvalds | 08 October 2016, 04:20:33 UTC | Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC defconfig updates from Arnd Bergmann: "Defconfig additions, removals, etc. Most of these are small changes adding the options for newly upstreamed drivers, or drivers needed for new board support. Nothing specifically sticks out this time" * tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (25 commits) ARM: multi_v7_defconfig: enable CONFIG_EFI ARM: multi_v7_defconfig: Build Atmel maXTouch driver as a module ARM: defconfig: update the Integrator defconfig ARM: keystone: defconfig: Fix USB configuration ARM: imx_v6_v7_defconfig: Select the wm8960 codec driver ARM: omap2plus_defconfig: switch to the IIO BMP085 driver ARM: mvebu_v5_defconfig: use MV88E6XXX ARM: davinci_all_defconfig: Enable some UBI modules ARM: davinci_all_defconfig: Enable AEMIF as a module ARM: multi_v7_defconfig: Enable SECCOMP ARM: exynos_defconfig: Enable SECCOMP ARM: imx_v6_v7_defconfig: Add CONFIG_MPL3115 ARM: imx_v6_v7_defconfig: Enable GPU support ARM: s3c2410_defconfig: Remove CONFIG_IPV6_PRIVACY ARM: exynos_defconfig: Enable PM_DEBUG ARM: exynos_defconfig: Enable bus frequency scaling with devfreq ARM: imx_v6_v7_defconfig: enable more USB configurations ARM: davinci_all_defconfig: enable SMSC ethernet PHY ARM: davinci_all_defconfig: enable RTC driver as module ARM: multi_v7_defconfig: Enable ARM_IMX6Q_CPUFREQ ... | 08 October 2016, 04:20:33 UTC |
| 66f2c6d | Linus Torvalds | 08 October 2016, 04:18:42 UTC | Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC platform updates from Arnd Bergmann: "These are updates for platform specific code on 32-bit ARM machines, essentially anything that can not (yet) be expressed using DT files. Noteworthy changes include: - We get support for running in big-endian mode on two platforms: sunxi (Allwinner) and s3c24xx (old Samsung). - The recently added Uniphier platform now uses standard PSCI methods for SMP booting and we remove support for old bootloader versions that did not support it yet. - In sunxi, we gain support for the "Nextthing GR8" SoC, which is a close relative of the Allwinner A13 and R8 chips. - PXA completes its move over to the generic dmaengine framework and removes its old private API - mach-bcm gains support for BCM47189/BCM53573, their first ARM SoC with integrated 802.11ac wireless networking" * tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (54 commits) ARM: imx legacy: pca100: move peripheral initialization to .init_late ARM: imx legacy: mx27ads: move peripheral initialization to .init_late ARM: imx legacy: mx21ads: move peripheral initialization to .init_late ARM: imx legacy: pcm043: move peripheral initialization to .init_late ARM: imx legacy: mx35-3ds: move peripheral initialization to .init_late ARM: imx legacy: mx27-3ds: move peripheral initialization to .init_late ARM: imx legacy: imx27-visstrim-m10: move peripheral initialization to .init_late ARM: imx legacy: vpr200: move peripheral initialization to .init_late ARM: imx legacy: mx31moboard: move peripheral initialization to .init_late ARM: imx legacy: armadillo5x0: move peripheral initialization to .init_late ARM: imx legacy: qong: move peripheral initialization to .init_late ARM: imx legacy: mx31-3ds: move peripheral initialization to .init_late ARM: imx legacy: pcm037: move peripheral initialization to .init_late ARM: imx legacy: mx31lilly: move peripheral initialization to .init_late ARM: imx legacy: mx31ads: move peripheral initialization to .init_late ARM: imx legacy: mx31lite: move peripheral initialization to .init_late ARM: imx legacy: kzm: move peripheral initialization to .init_late MAINTAINERS: update list of Oxnas maintainers ARM: orion5x: remove extraneous NO_IRQ ARM: orion: simplify orion_ge00_switch_init ... | 08 October 2016, 04:18:42 UTC |
| a771151 | Linus Torvalds | 08 October 2016, 04:16:16 UTC | Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC cleanups from Arnd Bergmann: "The cleanups for v4.9 are a little larger that usual, but thankfully that is almost exclusively due to removing a significant number of files that have become obsolete after the still ongoing conversion of old board files to devicetree. - for mach-omap2, which is still the largest platform in arch/arm/, the conversion to DT is finally complete after the Nokia N900 is now fully supported there, along with the omap3 LDP, and we can remove those two board files. If no regressions are found, another large cleanup for the platform will happen as a follow-up, removing dead code and restructuring the platform based on being DT-only. - In mach-imx, similar work is ongoing, but has not come that far. This time, we remove the obsolete board file for the i.MX1 generation, which like i.MX25, i.MX5, i.MX6, and i.MX7 is now DT-only. The remaining board files are for i.MX2 and i.MX3 machines based on old ARM926 or ARM1136 cores that should work with DT in principle. - realview has just been converted from board files to DT, and a lot of code gets removed in the process. This is the last ARM/Keil/Versatile derived platform that was still using board files, the other ones being integrator, versatile and vexpress. We can probably merge the remaining code into a single directory in the near future. - clps711x had completed the conversion in v4.8, but we accidentally left the files in place that should have been deleted then" * tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (21 commits) ARM: select PCI_DOMAINS config from ARCH_MULTIPLATFORM ARM: stop *MIGHT_HAVE_PCI* config from being selected redundantly ARM: imx: (trivial) fix typo and grammar ARM: clps711x: remove extraneous files ARM: imx: use IS_ENABLED() instead of checking for built-in or module ARM: OMAP2+: use IS_ENABLED() instead of checking for built-in or module ARM: OMAP1: use IS_ENABLED() instead of checking for built-in or module ARM: imx: remove platform-mxc_rnga ARM: realview: imply device tree boot ARM: realview: no need to select SMP_ON_UP explicitly ARM: realview: delete the RealView board files ARM: imx: no need to select SMP_ON_UP explicitly ARM: i.MX: Move SOC_IMX1 into 'Device tree only' ARM: i.MX: Remove i.MX1 non-DT support ARM: i.MX: Remove i.MX1 Synertronixx SCB9328 board support ARM: i.MX: Remove i.MX1 Armadeus APF9328 board support ARM: mxs: remove obsolete startup code for TX28 ARM: i.MX31 iomux: remove duplicates with alternate name ARM: i.MX31 iomux: remove plain duplicates ARM: OMAP2+: Drop legacy board file for LDP ... | 08 October 2016, 04:16:16 UTC |
| 776482c | Christophe Jaillet | 07 October 2016, 20:58:47 UTC | wan/fsl_ucc_hdlc: Fix size used in dma_free_coherent() Size used with 'dma_alloc_coherent()' and 'dma_free_coherent()' should be consistent. Here, the size of a pointer is used in dma_alloc... and the size of the pointed structure is used in dma_free... This has been spotted with coccinelle, using the following script: //////////////////// @r@ expression x0, x1, y0, y1, z0, z1, t0, t1, ret; @@ * ret = dma_alloc_coherent(x0, y0, z0, t0); ... * dma_free_coherent(x1, y1, ret, t1); @script:python@ y0 << r.y0; y1 << r.y1; @@ if y1.find(y0) == -1: print "WARNING: sizes look different: '%s' vs '%s'" % (y0, y1) //////////////////// Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net> | 08 October 2016, 04:04:48 UTC |
| fa6114d | Nathan Sullivan | 07 October 2016, 15:13:22 UTC | net: macb: NULL out phydev after removing mdio bus To ensure the dev->phydev pointer is not used after becoming invalid in mdiobus_unregister, set it to NULL. This happens when removing the macb driver without first taking its interface down, since unregister_netdev will end up calling macb_close. Signed-off-by: Xander Huff <xander.huff@ni.com> Signed-off-by: Nathan Sullivan <nathan.sullivan@ni.com> Signed-off-by: Brad Mouring <brad.mouring@ni.com> Reviewed-by: Moritz Fischer <moritz.fischer@ettus.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 08 October 2016, 03:55:59 UTC |
| 912e27e | Paul Durrant | 07 October 2016, 08:32:31 UTC | xen-netback: make sure that hashes are not send to unaware frontends In the case when a frontend only negotiates a single queue with xen- netback it is possible for a skbuff with a s/w hash to result in a hash extra_info segment being sent to the frontend even when no hash algorithm has been configured. (The ndo_select_queue() entry point makes sure the hash is not set if no algorithm is configured, but this entry point is not called when there is only a single queue). This can result in a frontend that is unable to handle extra_info segments being given such a segment, causing it to crash. This patch fixes the problem by clearing the hash in ndo_start_xmit() instead, which is clearly guaranteed to be called irrespective of the number of queues. Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 08 October 2016, 03:52:33 UTC |
| 21d9629 | Alex Sidorenko | 07 October 2016, 13:02:33 UTC | Fixing a bug in team driver due to incorrect 'unsigned int' to 'int' conversion Roundrobin runner of team driver uses 'unsigned int' variable to count the number of sent_packets. Later it is passed to a subroutine team_num_to_port_index(struct team *team, int num) as 'num' and when we reach MAXINT (2**31-1), 'num' becomes negative. This leads to using incorrect hash-bucket for port lookup and as a result, packets are dropped. The fix consists of changing 'int num' to 'unsigned int num'. Testing of a fixed kernel shows that there is no packet drop anymore. Signed-off-by: Alex Sidorenko <alexandre.sidorenko@hpe.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 08 October 2016, 03:50:39 UTC |
| 997b611 | Linus Torvalds | 08 October 2016, 03:50:37 UTC | Merge branch 'parisc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc updates from Helge Deller: "Changes include: - Fix boot of 32bit SMP kernel (initial kernel mapping was too small) - Added hardened usercopy checks - Drop bootmem and switch to memblock and NO_BOOTMEM implementation - Drop the BROKEN_RODATA config option (and thus remove the relevant code from the generic headers and files because parisc was the last architecture which used this config option) - Improve segfault reporting by printing human readable error strings - Various smaller changes, e.g. dwarf debug support for assembly code, update comments regarding copy_user_page_asm, switch to kmalloc_array()" * 'parisc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Increase KERNEL_INITIAL_SIZE for 32-bit SMP kernels parisc: Drop bootmem and switch to memblock parisc: Add hardened usercopy feature parisc: Add cfi_startproc and cfi_endproc to assembly code parisc: Move hpmc stack into page aligned bss section parisc: Fix self-detected CPU stall warnings on Mako machines parisc: Report trap type as human readable string parisc: Update comment regarding implementation of copy_user_page_asm parisc: Use kmalloc_array() in add_system_map_addresses() parisc: Check return value of smp_boot_one_cpu() parisc: Drop BROKEN_RODATA config option | 08 October 2016, 03:50:37 UTC |
| 7d3cfc3 | Paul Durrant | 07 October 2016, 10:33:37 UTC | MAINTAINERS: add myself as a maintainer of xen-netback Signed-off-by: Paul Durrant <paul.durrant@citrix.com> Cc: Wei Liu <wei.liu2@citrix.com> Acked-by: Wei Liu <wei.liu2@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 08 October 2016, 03:49:36 UTC |
| 2c34ff1 | Linus Torvalds | 08 October 2016, 03:48:45 UTC | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32 Pull avr32 update from Hans-Christian Noren Egtvedt. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/egtvedt/linux-avr32: avr32: migrate exception table users off module.h and onto extable.h | 08 October 2016, 03:48:45 UTC |
| cb4a4c6 | Maciej Żenczykowski | 07 October 2016, 08:00:49 UTC | ipv6 addrconf: disallow rtr_solicits < -1 This disallows setting /proc/sys/net/ipv6/conf/*/router_solicitations to values below -1. -1 continues to mean an unlimited number of retransmits. Note: this depends on 'ipv6 addrconf: remove addrconf_sysctl_hop_limit()' Signed-off-by: Maciej Żenczykowski <maze@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> | 08 October 2016, 03:43:56 UTC |
| 07021b4 | Linus Torvalds | 08 October 2016, 03:19:31 UTC | Merge tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Highlights: - Major rework of Book3S 64-bit exception vectors (Nicholas Piggin) - Use gas sections for arranging exception vectors et. al. - Large set of TM cleanups and selftests (Cyril Bur) - Enable transactional memory (TM) lazily for userspace (Cyril Bur) - Support for XZ compression in the zImage wrapper (Oliver O'Halloran) - Add support for bpf constant blinding (Naveen N. Rao) - Beginnings of upstream support for PA Semi Nemo motherboards (Darren Stevens) Fixes: - Ensure .mem(init|exit).text are within _stext/_etext (Michael Ellerman) - xmon: Don't use ld on 32-bit (Michael Ellerman) - vdso64: Use double word compare on pointers (Anton Blanchard) - powerpc/nvram: Fix an incorrect partition merge (Pan Xinhui) - powerpc: Fix usage of _PAGE_RO in hugepage (Christophe Leroy) - powerpc/mm: Update FORCE_MAX_ZONEORDER range to allow hugetlb w/4K (Aneesh Kumar K.V) - Fix memory leak in queue_hotplug_event() error path (Andrew Donnellan) - Replay hypervisor maintenance interrupt first (Nicholas Piggin) Various performance optimisations (Anton Blanchard): - Align hot loops of memset() and backwards_memcpy() - During context switch, check before setting mm_cpumask - Remove static branch prediction in atomic{, 64}_add_unless - Only disable HAVE_EFFICIENT_UNALIGNED_ACCESS on POWER7 little endian - Set default CPU type to POWER8 for little endian builds Cleanups & features: - Sparse fixes/cleanups (Daniel Axtens) - Preserve CFAR value on SLB miss caused by access to bogus address (Paul Mackerras) - Radix MMU fixups for POWER9 (Aneesh Kumar K.V) - Support for setting used_(vsr|vr|spe) in sigreturn path (for CRIU) (Simon Guo) - Optimise syscall entry for virtual, relocatable case (Nicholas Piggin) - Optimise MSR handling in exception handling (Nicholas Piggin) - Support for kexec with Radix MMU (Benjamin Herrenschmidt) - powernv EEH fixes (Russell Currey) - Suprise PCI hotplug support for powernv (Gavin Shan) - Endian/sparse fixes for powernv PCI (Gavin Shan) - Defconfig updates (Anton Blanchard) - KVM: PPC: Book3S HV: Migrate pinned pages out of CMA (Balbir Singh) - cxl: Flush PSL cache before resetting the adapter (Frederic Barrat) - cxl: replace loop with for_each_child_of_node(), remove unneeded of_node_put() (Andrew Donnellan) - Fix HV facility unavailable to use correct handler (Nicholas Piggin) - Remove unnecessary syscall trampoline (Nicholas Piggin) - fadump: Fix build break when CONFIG_PROC_VMCORE=n (Michael Ellerman) - Quieten EEH message when no adapters are found (Anton Blanchard) - powernv: Add PHB register dump debugfs handle (Russell Currey) - Use kprobe blacklist for exception handlers & asm functions (Nicholas Piggin) - Document the syscall ABI (Nicholas Piggin) - MAINTAINERS: Update cxl maintainers (Michael Neuling) - powerpc: Remove all usages of NO_IRQ (Michael Ellerman) Minor cleanups: - Andrew Donnellan, Christophe Leroy, Colin Ian King, Cyril Bur, Frederic Barrat, Pan Xinhui, PrasannaKumar Muralidharan, Rui Teng, Simon Guo" * tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (156 commits) powerpc/bpf: Add support for bpf constant blinding powerpc/bpf: Implement support for tail calls powerpc/bpf: Introduce accessors for using the tmp local stack space powerpc/fadump: Fix build break when CONFIG_PROC_VMCORE=n powerpc: tm: Enable transactional memory (TM) lazily for userspace powerpc/tm: Add TM Unavailable Exception powerpc: Remove do_load_up_transact_{fpu,altivec} powerpc: tm: Rename transct_(*) to ck(\1)_state powerpc: tm: Always use fp_state and vr_state to store live registers selftests/powerpc: Add checks for transactional VSXs in signal contexts selftests/powerpc: Add checks for transactional VMXs in signal contexts selftests/powerpc: Add checks for transactional FPUs in signal contexts selftests/powerpc: Add checks for transactional GPRs in signal contexts selftests/powerpc: Check that signals always get delivered selftests/powerpc: Add TM tcheck helpers in C selftests/powerpc: Allow tests to extend their kill timeout selftests/powerpc: Introduce GPR asm helper header file selftests/powerpc: Move VMX stack frame macros to header file selftests/powerpc: Rework FPU stack placement macros and move to header file selftests/powerpc: Check for VSX preservation across userspace preemption ... | 08 October 2016, 03:19:31 UTC |
| fd50eca | Andreas Gruenbacher | 29 September 2016, 15:48:45 UTC | vfs: Remove {get,set,remove}xattr inode operations These inode operations are no longer used; remove them. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> | 08 October 2016, 01:48:36 UTC |
| 05fd007 | Paul Burton | 08 October 2016, 00:03:15 UTC | console: don't prefer first registered if DT specifies stdout-path If a device tree specifies a preferred device for kernel console output via the stdout-path or linux,stdout-path chosen node properties or the stdout alias then the kernel ought to honor it & output the kernel console to that device. As it stands, this isn't the case. Whilst we parse the stdout-path properties & set an of_stdout variable from of_alias_scan(), and use that from of_console_check() to determine whether to add a console device as a preferred console whilst registering it, we also prefer the first registered console if no other has been selected at the time of its registration. This means that if a console other than the one the device tree selects via stdout-path is registered first, we will switch to using it & when the stdout-path console is later registered the call to add_preferred_console() via of_console_check() is too late to do anything useful. In practice this seems to mean that we switch to the dummy console device fairly early & see no further console output: Console: colour dummy device 80x25 console [tty0] enabled bootconsole [ns16550a0] disabled Fix this by not automatically preferring the first registered console if one is specified by the device tree. This allows consoles to be registered but not enabled, and once the driver for the console selected by stdout-path calls of_console_check() the driver will be added to the list of preferred consoles before any other console has been enabled. When that console is then registered via register_console() it will be enabled as expected. Link: http://lkml.kernel.org/r/20160809151937.26118-1-paul.burton@imgtec.com Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Tejun Heo <tj@kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Ivan Delalande <colona@arista.com> Cc: Thierry Reding <treding@nvidia.com> Cc: Borislav Petkov <bp@suse.de> Cc: Jan Kara <jack@suse.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Joe Perches <joe@perches.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 81243ea | Alexey Dobriyan | 08 October 2016, 00:03:12 UTC | cred: simpler, 1D supplementary groups Current supplementary groups code can massively overallocate memory and is implemented in a way so that access to individual gid is done via 2D array. If number of gids is <= 32, memory allocation is more or less tolerable (140/148 bytes). But if it is not, code allocates full page (!) regardless and, what's even more fun, doesn't reuse small 32-entry array. 2D array means dependent shifts, loads and LEAs without possibility to optimize them (gid is never known at compile time). All of the above is unnecessary. Switch to the usual trailing-zero-len-array scheme. Memory is allocated with kmalloc/vmalloc() and only as much as needed. Accesses become simpler (LEA 8(gi,idx,4) or even without displacement). Maximum number of gids is 65536 which translates to 256KB+8 bytes. I think kernel can handle such allocation. On my usual desktop system with whole 9 (nine) aux groups, struct group_info shrinks from 148 bytes to 44 bytes, yay! Nice side effects: - "gi->gid[i]" is shorter than "GROUP_AT(gi, i)", less typing, - fix little mess in net/ipv4/ping.c should have been using GROUP_AT macro but this point becomes moot, - aux group allocation is persistent and should be accounted as such. Link: http://lkml.kernel.org/r/20160817201927.GA2096@p183.telecom.by Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Vasily Kulikov <segoon@openwall.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 954f74b | Pavel Machek | 08 October 2016, 00:03:09 UTC | CREDITS: update Pavel's information, add GPG key, remove snail mail address Link: http://lkml.kernel.org/r/20161003082312.GA20634@amd Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 69474af | Johan Hovold | 08 October 2016, 00:03:07 UTC | mailmap: add Johan Hovold Add two entries to map to my primary address. Link: http://lkml.kernel.org/r/1473850348-19177-1-git-send-email-johan@kernel.org Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 218dd85 | Jean Delvare | 08 October 2016, 00:03:04 UTC | .gitattributes: set git diff driver for C source code files Git can be told to apply language-specific rules when generating diffs. Enable this for C source code files (*.c and *.h) so that function names are printed right. Specifically, doing so prevents "git diff" from mistakenly considering unindented goto labels as function names. Link: http://lkml.kernel.org/r/20160907143403.1449324f@endymion Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Joe Perches <joe@perches.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| ea03623 | Marcin Nowakowski | 08 October 2016, 00:03:01 UTC | uprobes: remove function declarations from arch/{mips,s390} The declarations of arch-specific functions have been moved to a common header in commit 3820b4d2789f ('uprobes: Move function declarations out of arch'), but MIPS and S390 has added them to their own trees later. Remove the unnecessary duplicates. Link: http://lkml.kernel.org/r/1472804384-17830-1-git-send-email-marcin.nowakowski@imgtec.com Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 4701645 | Joe Perches | 08 October 2016, 00:02:58 UTC | spelling.txt: "modeled" is spelt correctly No need to correct the correct. Link: http://lkml.kernel.org/r/1472490791.3425.38.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 6727ad9 | Chris Metcalf | 08 October 2016, 00:02:55 UTC | nmi_backtrace: generate one-line reports for idle cpus When doing an nmi backtrace of many cores, most of which are idle, the output is a little overwhelming and very uninformative. Suppress messages for cpus that are idling when they are interrupted and just emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN". We do this by grouping all the cpuidle code together into a new .cpuidle.text section, and then checking the address of the interrupted PC to see if it lies within that section. This commit suitably tags x86 and tile idle routines, and only adds in the minimal framework for other architectures. Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm] Tested-by: Petr Mladek <pmladek@suse.com> Cc: Aaron Tomlin <atomlin@redhat.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 511f838 | Chris Metcalf | 08 October 2016, 00:02:52 UTC | arch/tile: adopt the new nmi_backtrace framework Previously tile was rolling its own method of capturing backtrace data in the NMI handlers, but it was relying on running printk() from the NMI handler, which is not always safe. So adopt the nmi_backtrace model (with the new cpumask extension) instead. So we can call the nmi_backtrace code directly from the nmi handler, move the nmi_enter()/exit() into the top-level tile NMI handler. The semantics of the routine change slightly since it is now synchronous with the remote cores completing the backtraces. Previously it was asynchronous, but with protection to avoid starting a new remote backtrace if the old one was still in progress. Link: http://lkml.kernel.org/r/1472487169-14923-4-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com> Cc: Daniel Thompson <daniel.thompson@linaro.org> [arm] Cc: Petr Mladek <pmladek@suse.com> Cc: Aaron Tomlin <atomlin@redhat.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 6776648 | Chris Metcalf | 08 October 2016, 00:02:49 UTC | nmi_backtrace: do a local dump_stack() instead of a self-NMI Currently on arm there is code that checks whether it should call dump_stack() explicitly, to avoid trying to raise an NMI when the current context is not preemptible by the backtrace IPI. Similarly, the forthcoming arch/tile support uses an IPI mechanism that does not support generating an NMI to self. Accordingly, move the code that guards this case into the generic mechanism, and invoke it unconditionally whenever we want a backtrace of the current cpu. It seems plausible that in all cases, dump_stack() will generate better information than generating a stack from the NMI handler. The register state will be missing, but that state is likely not particularly helpful in any case. Or, if we think it is helpful, we should be capturing and emitting the current register state in all cases when regs == NULL is passed to nmi_cpu_backtrace(). Link: http://lkml.kernel.org/r/1472487169-14923-3-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm] Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Aaron Tomlin <atomlin@redhat.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 9a01c3e | Chris Metcalf | 08 October 2016, 00:02:45 UTC | nmi_backtrace: add more trigger_*_cpu_backtrace() methods Patch series "improvements to the nmi_backtrace code" v9. This patch series modifies the trigger_xxx_backtrace() NMI-based remote backtracing code to make it more flexible, and makes a few small improvements along the way. The motivation comes from the task isolation code, where there are scenarios where we want to be able to diagnose a case where some cpu is about to interrupt a task-isolated cpu. It can be helpful to see both where the interrupting cpu is, and also an approximation of where the cpu that is being interrupted is. The nmi_backtrace framework allows us to discover the stack of the interrupted cpu. I've tested that the change works as desired on tile, and build-tested x86, arm, mips, and sparc64. For x86 I confirmed that the generic cpuidle stuff as well as the architecture-specific routines are in the new cpuidle section. For arm, mips, and sparc I just build-tested it and made sure the generic cpuidle routines were in the new cpuidle section, but I didn't attempt to figure out which the platform-specific idle routines might be. That might be more usefully done by someone with platform experience in follow-up patches. This patch (of 4): Currently you can only request a backtrace of either all cpus, or all cpus but yourself. It can also be helpful to request a remote backtrace of a single cpu, and since we want that, the logical extension is to support a cpumask as the underlying primitive. This change modifies the existing lib/nmi_backtrace.c code to take a cpumask as its basic primitive, and modifies the linux/nmi.h code to use the new "cpumask" method instead. The existing clients of nmi_backtrace (arm and x86) are converted to using the new cpumask approach in this change. The other users of the backtracing API (sparc64 and mips) are converted to use the cpumask approach rather than the all/allbutself approach. The mips code ignored the "include_self" boolean but with this change it will now also dump a local backtrace if requested. Link: http://lkml.kernel.org/r/1472487169-14923-2-git-send-email-cmetcalf@mellanox.com Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com> Tested-by: Daniel Thompson <daniel.thompson@linaro.org> [arm] Reviewed-by: Aaron Tomlin <atomlin@redhat.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Russell King <linux@arm.linux.org.uk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 589a978 | Johannes Berg | 08 October 2016, 00:02:42 UTC | min/max: remove sparse warnings when they're nested Currently, when min/max are nested within themselves, sparse will warn: warning: symbol '_min1' shadows an earlier one originally declared here warning: symbol '_min1' shadows an earlier one originally declared here warning: symbol '_min2' shadows an earlier one originally declared here This also immediately happens when min3() or max3() are used. Since sparse implements __COUNTER__, we can use __UNIQUE_ID() to generate unique variable names, avoiding this. Link: http://lkml.kernel.org/r/1471519773-29882-1-git-send-email-johannes@sipsolutions.net Signed-off-by: Johannes Berg <johannes.berg@intel.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 53aeee7 | Robert Ho | 08 October 2016, 00:02:39 UTC | Documentation/filesystems/proc.txt: add more description for maps/smaps Add some more description on the limitations for smaps/maps readings, as well as some guaruntees we can make. Link: http://lkml.kernel.org/r/1475296958-27652-2-git-send-email-robert.hu@intel.com Signed-off-by: Robert Ho <robert.hu@intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Xiao Guangrong <guangrong.xiao@linux.intel.com> Cc: Robert Hu <robert.hu@intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 855af07 | Robert Ho | 08 October 2016, 00:02:36 UTC | mm, proc: fix region lost in /proc/self/smaps Recently, Redhat reported that nvml test suite failed on QEMU/KVM, more detailed info please refer to: https://bugzilla.redhat.com/show_bug.cgi?id=1365721 Actually, this bug is not only for NVDIMM/DAX but also for any other file systems. This simple test case abstracted from nvml can easily reproduce this bug in common environment: -------------------------- testcase.c ----------------------------- int is_pmem_proc(const void *addr, size_t len) { const char *caddr = addr; FILE *fp; if ((fp = fopen("/proc/self/smaps", "r")) == NULL) { printf("!/proc/self/smaps"); return 0; } int retval = 0; /* assume false until proven otherwise */ char line[PROCMAXLEN]; /* for fgets() */ char *lo = NULL; /* beginning of current range in smaps file */ char *hi = NULL; /* end of current range in smaps file */ int needmm = 0; /* looking for mm flag for current range */ while (fgets(line, PROCMAXLEN, fp) != NULL) { static const char vmflags[] = "VmFlags:"; static const char mm[] = " wr"; /* check for range line */ if (sscanf(line, "%p-%p", &lo, &hi) == 2) { if (needmm) { /* last range matched, but no mm flag found */ printf("never found mm flag.\n"); break; } else if (caddr < lo) { /* never found the range for caddr */ printf("#######no match for addr %p.\n", caddr); break; } else if (caddr < hi) { /* start address is in this range */ size_t rangelen = (size_t)(hi - caddr); /* remember that matching has started */ needmm = 1; /* calculate remaining range to search for */ if (len > rangelen) { len -= rangelen; caddr += rangelen; printf("matched %zu bytes in range " "%p-%p, %zu left over.\n", rangelen, lo, hi, len); } else { len = 0; printf("matched all bytes in range " "%p-%p.\n", lo, hi); } } } else if (needmm && strncmp(line, vmflags, sizeof(vmflags) - 1) == 0) { if (strstr(&line[sizeof(vmflags) - 1], mm) != NULL) { printf("mm flag found.\n"); if (len == 0) { /* entire range matched */ retval = 1; break; } needmm = 0; /* saw what was needed */ } else { /* mm flag not set for some or all of range */ printf("range has no mm flag.\n"); break; } } } fclose(fp); printf("returning %d.\n", retval); return retval; } void *Addr; size_t Size; /* * worker -- the work each thread performs */ static void * worker(void *arg) { int *ret = (int *)arg; *ret = is_pmem_proc(Addr, Size); return NULL; } int main(int argc, char *argv[]) { if (argc < 2 || argc > 3) { printf("usage: %s file [env].\n", argv[0]); return -1; } int fd = open(argv[1], O_RDWR); struct stat stbuf; fstat(fd, &stbuf); Size = stbuf.st_size; Addr = mmap(0, stbuf.st_size, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0); close(fd); pthread_t threads[NTHREAD]; int ret[NTHREAD]; /* kick off NTHREAD threads */ for (int i = 0; i < NTHREAD; i++) pthread_create(&threads[i], NULL, worker, &ret[i]); /* wait for all the threads to complete */ for (int i = 0; i < NTHREAD; i++) pthread_join(threads[i], NULL); /* verify that all the threads return the same value */ for (int i = 1; i < NTHREAD; i++) { if (ret[0] != ret[i]) { printf("Error i %d ret[0] = %d ret[i] = %d.\n", i, ret[0], ret[i]); } } printf("%d", ret[0]); return 0; } It failed as some threads can not find the memory region in "/proc/self/smaps" which is allocated in the main process It is caused by proc fs which uses 'file->version' to indicate the VMA that is the last one has already been handled by read() system call. When the next read() issues, it uses the 'version' to find the VMA, then the next VMA is what we want to handle, the related code is as follows: if (last_addr) { vma = find_vma(mm, last_addr); if (vma && (vma = m_next_vma(priv, vma))) return vma; } However, VMA will be lost if the last VMA is gone, e.g: The process VMA list is A->B->C->D CPU 0 CPU 1 read() system call handle VMA B version = B return to userspace unmap VMA B issue read() again to continue to get the region info find_vma(version) will get VMA C m_next_vma(C) will get VMA D handle D !!! VMA C is lost !!! In order to fix this bug, we make 'file->version' indicate the end address of the current VMA. m_start will then look up a vma which with vma_start < last_vm_end and moves on to the next vma if we found the same or an overlapping vma. This will guarantee that we will not miss an exclusive vma but we can still miss one if the previous vma was shrunk. This is acceptable because guaranteeing "never miss a vma" is simply not feasible. User has to cope with some inconsistencies if the file is not read in one go. [mhocko@suse.com: changelog fixes] Link: http://lkml.kernel.org/r/1475296958-27652-1-git-send-email-robert.hu@intel.com Acked-by: Dave Hansen <dave.hansen@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Robert Hu <robert.hu@intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 4b2bd5f | John Stultz | 08 October 2016, 00:02:33 UTC | proc: fix timerslack_ns CAP_SYS_NICE check when adjusting self In changing from checking ptrace_may_access(p, PTRACE_MODE_ATTACH_FSCREDS) to capable(CAP_SYS_NICE), I missed that ptrace_my_access succeeds when p == current, but the CAP_SYS_NICE doesn't. Thus while the previous commit was intended to loosen the needed privileges to modify a processes timerslack, it needlessly restricted a task modifying its own timerslack via the proc/<tid>/timerslack_ns (which is permitted also via the PR_SET_TIMERSLACK method). This patch corrects this by checking if p == current before checking the CAP_SYS_NICE value. This patch applies on top of my two previous patches currently in -mm Link: http://lkml.kernel.org/r/1471906870-28624-1-git-send-email-john.stultz@linaro.org Signed-off-by: John Stultz <john.stultz@linaro.org> Acked-by: Kees Cook <keescook@chromium.org> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Oren Laadan <orenl@cellrox.com> Cc: Ruchi Kandoi <kandoiruchi@google.com> Cc: Rom Lemarchand <romlem@android.com> Cc: Todd Kjos <tkjos@google.com> Cc: Colin Cross <ccross@android.com> Cc: Nick Kralevich <nnk@google.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Elliott Hughes <enh@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 904763e | John Stultz | 08 October 2016, 00:02:29 UTC | proc: add LSM hook checks to /proc/<tid>/timerslack_ns As requested, this patch checks the existing LSM hooks task_getscheduler/task_setscheduler when reading or modifying the task's timerslack value. Previous versions added new get/settimerslack LSM hooks, but since they checked the same PROCESS__SET/GETSCHED values as existing hooks, it was suggested we just use the existing ones. Link: http://lkml.kernel.org/r/1469132667-17377-2-git-send-email-john.stultz@linaro.org Signed-off-by: John Stultz <john.stultz@linaro.org> Cc: Kees Cook <keescook@chromium.org> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Oren Laadan <orenl@cellrox.com> Cc: Ruchi Kandoi <kandoiruchi@google.com> Cc: Rom Lemarchand <romlem@android.com> Cc: Todd Kjos <tkjos@google.com> Cc: Colin Cross <ccross@android.com> Cc: Nick Kralevich <nnk@google.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Elliott Hughes <enh@google.com> Cc: James Morris <jmorris@namei.org> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 7abbaf9 | John Stultz | 08 October 2016, 00:02:26 UTC | proc: relax /proc/<tid>/timerslack_ns capability requirements When an interface to allow a task to change another tasks timerslack was first proposed, it was suggested that something greater then CAP_SYS_NICE would be needed, as a task could be delayed further then what normally could be done with nice adjustments. So CAP_SYS_PTRACE was adopted instead for what became the /proc/<tid>/timerslack_ns interface. However, for Android (where this feature originates), giving the system_server CAP_SYS_PTRACE would allow it to observe and modify all tasks memory. This is considered too high a privilege level for only needing to change the timerslack. After some discussion, it was realized that a CAP_SYS_NICE process can set a task as SCHED_FIFO, so they could fork some spinning processes and set them all SCHED_FIFO 99, in effect delaying all other tasks for an infinite amount of time. So as a CAP_SYS_NICE task can already cause trouble for other tasks, using it as a required capability for accessing and modifying /proc/<tid>/timerslack_ns seems sufficient. Thus, this patch loosens the capability requirements to CAP_SYS_NICE and removes CAP_SYS_PTRACE, simplifying some of the code flow as well. This is technically an ABI change, but as the feature just landed in 4.6, I suspect no one is yet using it. Link: http://lkml.kernel.org/r/1469132667-17377-1-git-send-email-john.stultz@linaro.org Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Nick Kralevich <nnk@google.com> Acked-by: Serge Hallyn <serge@hallyn.com> Acked-by: Kees Cook <keescook@chromium.org> Cc: Kees Cook <keescook@chromium.org> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Oren Laadan <orenl@cellrox.com> Cc: Ruchi Kandoi <kandoiruchi@google.com> Cc: Rom Lemarchand <romlem@android.com> Cc: Todd Kjos <tkjos@google.com> Cc: Colin Cross <ccross@android.com> Cc: Nick Kralevich <nnk@google.com> Cc: Dmitry Shmidt <dimitrysh@google.com> Cc: Elliott Hughes <enh@google.com> Cc: Android Kernel Team <kernel-team@android.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| e16e2d8 | Joe Perches | 08 October 2016, 00:02:23 UTC | meminfo: break apart a very long seq_printf with #ifdefs Use a specific routine to emit most lines so that the code is easier to read and maintain. akpm: text data bss dec hex filename 2976 8 0 2984 ba8 fs/proc/meminfo.o before 2669 8 0 2677 a75 fs/proc/meminfo.o after Link: http://lkml.kernel.org/r/8fce7fdef2ba081a4ef531594e97da8a9feebb58.1470810406.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 75ba1d0 | Joe Perches | 08 October 2016, 00:02:20 UTC | seq/proc: modify seq_put_decimal_[u]ll to take a const char *, not char Allow some seq_puts removals by taking a string instead of a single char. [akpm@linux-foundation.org: update vmstat_show(), per Joe] Link: http://lkml.kernel.org/r/667e1cf3d436de91a5698170a1e98d882905e956.1470704995.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Joe Perches <joe@perches.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| f7a5f13 | Alexey Dobriyan | 08 October 2016, 00:02:17 UTC | proc: faster /proc/*/status top(1) opens the following files for every PID: /proc/*/stat /proc/*/statm /proc/*/status This patch switches /proc/*/status away from seq_printf(). The result is 13.5% speedup. Benchmark is open("/proc/self/status")+read+close 1.000.000 million times. BEFORE $ perf stat -r 10 taskset -c 3 ./proc-self-status Performance counter stats for 'taskset -c 3 ./proc-self-status' (10 runs): 10748.474301 task-clock (msec) # 0.954 CPUs utilized ( +- 0.91% ) 12 context-switches # 0.001 K/sec ( +- 1.09% ) 1 cpu-migrations # 0.000 K/sec 104 page-faults # 0.010 K/sec ( +- 0.45% ) 37,424,127,876 cycles # 3.482 GHz ( +- 0.04% ) 8,453,010,029 stalled-cycles-frontend # 22.59% frontend cycles idle ( +- 0.12% ) 3,747,609,427 stalled-cycles-backend # 10.01% backend cycles idle ( +- 0.68% ) 65,632,764,147 instructions # 1.75 insn per cycle # 0.13 stalled cycles per insn ( +- 0.00% ) 13,981,324,775 branches # 1300.773 M/sec ( +- 0.00% ) 138,967,110 branch-misses # 0.99% of all branches ( +- 0.18% ) 11.263885428 seconds time elapsed ( +- 0.04% ) ^^^^^^^^^^^^ AFTER $ perf stat -r 10 taskset -c 3 ./proc-self-status Performance counter stats for 'taskset -c 3 ./proc-self-status' (10 runs): 9010.521776 task-clock (msec) # 0.925 CPUs utilized ( +- 1.54% ) 11 context-switches # 0.001 K/sec ( +- 1.54% ) 1 cpu-migrations # 0.000 K/sec ( +- 11.11% ) 103 page-faults # 0.011 K/sec ( +- 0.60% ) 32,352,310,603 cycles # 3.591 GHz ( +- 0.07% ) 7,849,199,578 stalled-cycles-frontend # 24.26% frontend cycles idle ( +- 0.27% ) 3,269,738,842 stalled-cycles-backend # 10.11% backend cycles idle ( +- 0.73% ) 56,012,163,567 instructions # 1.73 insn per cycle # 0.14 stalled cycles per insn ( +- 0.00% ) 11,735,778,795 branches # 1302.453 M/sec ( +- 0.00% ) 98,084,459 branch-misses # 0.84% of all branches ( +- 0.28% ) 9.741247736 seconds time elapsed ( +- 0.07% ) ^^^^^^^^^^^ Link: http://lkml.kernel.org/r/20160806125608.GB1187@p183.telecom.by Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Joe Perches <joe@perches.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 68ba032 | Alexey Dobriyan | 08 October 2016, 00:02:14 UTC | proc: much faster /proc/vmstat Every current KDE system has process named ksysguardd polling files below once in several seconds: $ strace -e trace=open -p $(pidof ksysguardd) Process 1812 attached open("/etc/mtab", O_RDONLY|O_CLOEXEC) = 8 open("/etc/mtab", O_RDONLY|O_CLOEXEC) = 8 open("/proc/net/dev", O_RDONLY) = 8 open("/proc/net/wireless", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/stat", O_RDONLY) = 8 open("/proc/vmstat", O_RDONLY) = 8 Hell knows what it is doing but speed up reading /proc/vmstat by 33%! Benchmark is open+read+close 1.000.000 times. BEFORE $ perf stat -r 10 taskset -c 3 ./proc-vmstat Performance counter stats for 'taskset -c 3 ./proc-vmstat' (10 runs): 13146.768464 task-clock (msec) # 0.960 CPUs utilized ( +- 0.60% ) 15 context-switches # 0.001 K/sec ( +- 1.41% ) 1 cpu-migrations # 0.000 K/sec ( +- 11.11% ) 104 page-faults # 0.008 K/sec ( +- 0.57% ) 45,489,799,349 cycles # 3.460 GHz ( +- 0.03% ) 9,970,175,743 stalled-cycles-frontend # 21.92% frontend cycles idle ( +- 0.10% ) 2,800,298,015 stalled-cycles-backend # 6.16% backend cycles idle ( +- 0.32% ) 79,241,190,850 instructions # 1.74 insn per cycle # 0.13 stalled cycles per insn ( +- 0.00% ) 17,616,096,146 branches # 1339.956 M/sec ( +- 0.00% ) 176,106,232 branch-misses # 1.00% of all branches ( +- 0.18% ) 13.691078109 seconds time elapsed ( +- 0.03% ) ^^^^^^^^^^^^ AFTER $ perf stat -r 10 taskset -c 3 ./proc-vmstat Performance counter stats for 'taskset -c 3 ./proc-vmstat' (10 runs): 8688.353749 task-clock (msec) # 0.950 CPUs utilized ( +- 1.25% ) 10 context-switches # 0.001 K/sec ( +- 2.13% ) 1 cpu-migrations # 0.000 K/sec 104 page-faults # 0.012 K/sec ( +- 0.56% ) 30,384,010,730 cycles # 3.497 GHz ( +- 0.07% ) 12,296,259,407 stalled-cycles-frontend # 40.47% frontend cycles idle ( +- 0.13% ) 3,370,668,651 stalled-cycles-backend # 11.09% backend cycles idle ( +- 0.69% ) 28,969,052,879 instructions # 0.95 insn per cycle # 0.42 stalled cycles per insn ( +- 0.01% ) 6,308,245,891 branches # 726.058 M/sec ( +- 0.00% ) 214,685,502 branch-misses # 3.40% of all branches ( +- 0.26% ) 9.146081052 seconds time elapsed ( +- 0.07% ) ^^^^^^^^^^^ vsnprintf() is slow because: 1. format_decode() is busy looking for format specifier: 2 branches per character (not in this case, but in others) 2. approximately million branches while parsing format mini language and everywhere 3. just look at what string() does /proc/vmstat is good case because most of its content are strings Link: http://lkml.kernel.org/r/20160806125455.GA1187@p183.telecom.by Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Joe Perches <joe@perches.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
| 51a0212 | Vineet Gupta | 08 October 2016, 00:02:10 UTC | atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE This came to light when implementing native 64-bit atomics for ARCv2. The atomic64 self-test code uses CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE to check whether atomic64_dec_if_positive() is available. It seems it was needed when not every arch defined it. However as of current code the Kconfig option seems needless - for CONFIG_GENERIC_ATOMIC64 it is auto-enabled in lib/Kconfig and a generic definition of API is present lib/atomic64.c - arches with native 64-bit atomics select it in arch/*/Kconfig and define the API in their headers So I see no point in keeping the Kconfig option Compile tested for: - blackfin (CONFIG_GENERIC_ATOMIC64) - x86 (!CONFIG_GENERIC_ATOMIC64) - ia64 Link: http://lkml.kernel.org/r/1473703083-8625-3-git-send-email-vgupta@synopsys.com Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Zhaoxiu Zeng <zhaoxiu.zeng@gmail.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ming Lin <ming.l@ssi.samsung.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@suse.de> Cc: Andi Kleen <ak@linux.intel.com> Cc: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> | 08 October 2016, 01:46:30 UTC |
