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6e86841 Linux 2.6.27-rc1 29 July 2008, 02:40:31 UTC
7874d35 Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: lguest: turn Waker into a thread, not a process lguest: Enlarge virtio rings lguest: Use GSO/IFF_VNET_HDR extensions on tun/tap lguest: Remove 'network: no dma buffer!' warning lguest: Adaptive timeout lguest: Tell Guest net not to notify us on every packet xmit lguest: net block unneeded receive queue update notifications lguest: wrap last_avail accesses. lguest: use cpu capability accessors lguest: virtio-rng support lguest: Support assigning a MAC address lguest: Don't leak /dev/zero fd lguest: fix verbose printing of device features. lguest: fix switcher_page leak on unload lguest: Guest int3 fix lguest: set max_pfn_mapped, growl loudly at Yinghai Lu 29 July 2008, 01:16:26 UTC
5dfb66b Merge branch 'for-linus' of git://git.o-hand.com/linux-mfd * 'for-linus' of git://git.o-hand.com/linux-mfd: mfd: accept pure device as a parent, not only platform_device mfd: add platform_data to mfd_cell mfd: Coding style fixes mfd: Use to_platform_device instead of container_of 29 July 2008, 01:15:41 UTC
1d9b9f6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (21 commits) x86/PCI: use dev_printk when possible PCI: add D3 power state avoidance quirk PCI: fix bogus "'device' may be used uninitialized" warning in pci_slot PCI: add an option to allow ASPM enabled forcibly PCI: disable ASPM on pre-1.1 PCIe devices PCI: disable ASPM per ACPI FADT setting PCI MSI: Don't disable MSIs if the mask bit isn't supported PCI: handle 64-bit resources better on 32-bit machines PCI: rewrite PCI BAR reading code PCI: document pci_target_state PCI hotplug: fix typo in pcie hotplug output x86 gart: replace to_pages macro with iommu_num_pages x86, AMD IOMMU: replace to_pages macro with iommu_num_pages iommu: add iommu_num_pages helper function dma-coherent: add documentation to new interfaces Cris: convert to using generic dma-coherent mem allocator Sh: use generic per-device coherent dma allocator ARM: support generic per-device coherent dma mem Generic dma-coherent: fix DMA_MEMORY_EXCLUSIVE x86: use generic per-device dma coherent allocator ... 29 July 2008, 01:14:24 UTC
a3ad7f1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] qla2xxx: fix msleep compile error 29 July 2008, 01:13:48 UTC
9b79022 Fix 'get_user_pages_fast()' with non-page-aligned start address Alexey Dobriyan reported trouble with LTP with the new fast-gup code, and Johannes Weiner debugged it to non-page-aligned addresses, where the new get_user_pages_fast() code would do all the wrong things, including just traversing past the end of the requested area due to 'addr' never matching 'end' exactly. This is not a pretty fix, and we may actually want to move the alignment into generic code, leaving just the core code per-arch, but Alexey verified that the vmsplice01 LTP test doesn't crash with this. Reported-and-tested-by: Alexey Dobriyan <adobriyan@gmail.com> Debugged-by: Johannes Weiner <hannes@saeurebad.de> Cc: Nick Piggin <npiggin@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 29 July 2008, 00:54:21 UTC
8c79873 lguest: turn Waker into a thread, not a process lguest uses a Waker process to break it out of the kernel (ie. actually running the guest) when file descriptor needs attention. Changing this from a process to a thread somewhat simplifies things: it can directly access the fd_set of things to watch. More importantly, it means that the Waker can see Guest memory correctly, so /dev/vring file descriptors will work as anticipated (the alternative is to actually mmap MAP_SHARED, but you can't do that with /dev/zero). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:39 UTC
0f0c4fa lguest: Enlarge virtio rings With big packets, 128 entries is a little small. Guest -> Host 1GB TCP: Before: 8.43625 seconds xmit 95640 recv 198266 timeout 49771 usec 1252 After: 8.01099 seconds xmit 49200 recv 102263 timeout 26014 usec 2118 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:38 UTC
398f187 lguest: Use GSO/IFF_VNET_HDR extensions on tun/tap Guest -> Host 1GB TCP: Before 20.1974 seconds xmit 214510 recv 5 timeout 214491 usec 278 After 8.43625 seconds xmit 95640 recv 198266 timeout 49771 usec 1252 Host -> Guest 1GB TCP: Before: Seconds 9.98854 xmit 172166 recv 5344 timeout 172157 usec 251 After: Seconds 5.72803 xmit 244322 recv 9919 timeout 244302 usec 156 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:37 UTC
9254926 lguest: Remove 'network: no dma buffer!' warning This warning can happen a lot under load, and it should be warnx not warn anwyay. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:37 UTC
aa12498 lguest: Adaptive timeout Since the correct timeout value varies, use a heuristic which adjusts the timeout depending on how many packets we've seen. This gives slightly worse results, but doesn't need tweaking when GSO is introduced. 500 usec 19.1887 xmit 561141 recv 1 timeout 559657 Dynamic (278) 20.1974 xmit 214510 recv 5 timeout 214491 usec 278 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:36 UTC
a161883 lguest: Tell Guest net not to notify us on every packet xmit virtio_ring has the ability to suppress notifications. This prevents a guest exit for every packet, but we need to set a timer on packet receipt to re-check if there were any remaining packets. Here are the times for 1G TCP Guest->Host with different timeout settings (it matters because the TCP window doesn't grow big enough to fill the entire buffer): Timeout value Seconds Xmit/Recv/Timeout None (before) 25.3784 xmit 7750233 recv 1 2500 usec 62.5119 xmit 207020 recv 2 timeout 207020 1000 usec 34.5379 xmit 207003 recv 2 timeout 207003 750 usec 29.2305 xmit 207002 recv 1 timeout 207002 500 usec 19.1887 xmit 561141 recv 1 timeout 559657 250 usec 20.0465 xmit 214128 recv 2 timeout 214110 100 usec 19.2583 xmit 561621 recv 1 timeout 560153 (Note that these values are sensitive to the GSO patches which come later, and probably other traffic-related variables, so take with a large grain of salt). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:36 UTC
5dae785 lguest: net block unneeded receive queue update notifications Number of exits transmitting 10GB Guest->Host before: network xmit 7858610 recv 118136 After: network xmit 7750233 recv 1 Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:35 UTC
b511179 lguest: wrap last_avail accesses. To simplify the transition to when we publish indices in the ring (and make shuffling my patch queue easier), wrap them in a lg_last_avail() macro. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:35 UTC
cf485e5 lguest: use cpu capability accessors To support my little make-x86-bitops-use-proper-typechecking projectlet. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrea Arcangeli <andrea@qumranet.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:34 UTC
28fd6d7 lguest: virtio-rng support This is a simple patch to add support for the virtio "hardware random generator" to lguest. It gets about 1.2 MB/sec reading from /dev/hwrng in the guest. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:34 UTC
dec6a2b lguest: Support assigning a MAC address If you've got a nice DHCP configuration which maps MAC addresses to specific IP addresses, then you're going to want to start your guest with one of those MAC addresses. Also, in Fedora, we have persistent network interface naming based on the MAC address, so with randomly assigned addresses you're soon going to hit eth13. Who knows what will happen then! Allow assigning a MAC address to the network interface with e.g. --tunnet=bridge:eth0:00:FF:95:6B:DA:3D or: --tunnet=192.168.121.1:00:FF:95:6B:DA:3D which is pretty unintelligable, but ... (includes Rusty's minor rework) Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:33 UTC
34bdaab lguest: Don't leak /dev/zero fd Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:33 UTC
32c68e5 lguest: fix verbose printing of device features. %02x is more appropriate for bytes than %08x. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:32 UTC
0a70721 lguest: fix switcher_page leak on unload map_switcher allocates the array, unmap_switcher has to free it accordingly. Signed-off-by: Johannes Weiner <hannes@saeurebad.de> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:32 UTC
0c12091 lguest: Guest int3 fix Ron Minnich noticed that guest userspace gets a GPF when it tries to int3: we need to copy the privilege level from the guest-supplied IDT to the real IDT. int3 is the only common case where guest userspace expects to invoke an interrupt, so that's the symptom of failing to do this. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> 28 July 2008, 23:58:31 UTC
5d006d8 lguest: set max_pfn_mapped, growl loudly at Yinghai Lu 6af61a7614a306fe882a0c2b4ddc63b65aa66efc 'x86: clean up max_pfn_mapped usage - 32-bit' makes the following comment: XEN PV and lguest may need to assign max_pfn_mapped too. But no CC. Yinghai, wasting fellow developers' time is a VERY bad habit. If you do it again, I will hunt you down and try to extract the three hours of my life I just lost :) Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Yinghai Lu <yhlu.kernel@gmail.com> 28 July 2008, 23:58:31 UTC
424f525 mfd: accept pure device as a parent, not only platform_device Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com> 28 July 2008, 23:30:26 UTC
34ee550 include/asm-generic/pgtable-nopmd.h: macros are noxious, reason #435 arch/x86/mm/pgtable.c: In function 'pgd_mop_up_pmds': arch/x86/mm/pgtable.c:194: warning: unused variable 'pmd' Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
c27ef92 sh7760fb: write colormap value to hardware The computed color value is never actually written to hardware colormap register. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Cc: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com> Cc: Munakata Hisao <munakata.hisao@renesas.com> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
7fcba05 eCryptfs: use page_alloc not kmalloc to get a page of memory With SLUB debugging turned on in 2.6.26, I was getting memory corruption when testing eCryptfs. The root cause turned out to be that eCryptfs was doing kmalloc(PAGE_CACHE_SIZE); virt_to_page() and treating that as a nice page-aligned chunk of memory. But at least with SLUB debugging on, this is not always true, and the page we get from virt_to_page does not necessarily match the PAGE_CACHE_SIZE worth of memory we got from kmalloc. My simple testcase was 2 loops doing "rm -f fileX; cp /tmp/fileX ." for 2 different multi-megabyte files. With this change I no longer see the corruption. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Acked-by: Michael Halcrow <mhalcrow@us.ibm.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
25947d5 gpio: fix build on CONFIG_GPIO_SYSFS=n If CONFIG_GENERIC_GPIO=y && CONFIG_GPIO_SYSFS=n, gpio_export() in asm-generic/gpio.h refers -ENOSYS and causes build error. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
e3b6e80 bio-integrity: remove EXPORT_SYMBOL for bio_integrity_init_slab() I got section mismatch message about bio_integrity_init_slab(). WARNING: fs/built-in.o(__ksymtab+0xb60): Section mismatch in reference from the variable __ksymtab_bio_integrity_init_slab to the function .init.text:bio_integrity_init_slab() The symbol bio_integrity_init_slab is exported and annotated __init Fix this by removing the __init annotation of bio_integrity_init_slab or drop the export. It only call from init_bio(). The EXPORT_SYMBOL() can be removed. Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
8ab22b9 vfs: pagecache usage optimization for pagesize!=blocksize When we read some part of a file through pagecache, if there is a pagecache of corresponding index but this page is not uptodate, read IO is issued and this page will be uptodate. I think this is good for pagesize == blocksize environment but there is room for improvement on pagesize != blocksize environment. Because in this case a page can have multiple buffers and even if a page is not uptodate, some buffers can be uptodate. So I suggest that when all buffers which correspond to a part of a file that we want to read are uptodate, use this pagecache and copy data from this pagecache to user buffer even if a page is not uptodate. This can reduce read IO and improve system throughput. I wrote a benchmark program and got result number with this program. This benchmark do: 1: mount and open a test file. 2: create a 512MB file. 3: close a file and umount. 4: mount and again open a test file. 5: pwrite randomly 300000 times on a test file. offset is aligned by IO size(1024bytes). 6: measure time of preading randomly 100000 times on a test file. The result was: 2.6.26 330 sec 2.6.26-patched 226 sec Arch:i386 Filesystem:ext3 Blocksize:1024 bytes Memory: 1GB On ext3/4, a file is written through buffer/block. So random read/write mixed workloads or random read after random write workloads are optimized with this patch under pagesize != blocksize environment. This test result showed this. The benchmark program is as follows: #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #include <time.h> #include <stdlib.h> #include <string.h> #include <sys/mount.h> #define LEN 1024 #define LOOP 1024*512 /* 512MB */ main(void) { unsigned long i, offset, filesize; int fd; char buf[LEN]; time_t t1, t2; if (mount("/dev/sda1", "/root/test1/", "ext3", 0, 0) < 0) { perror("cannot mount\n"); exit(1); } memset(buf, 0, LEN); fd = open("/root/test1/testfile", O_CREAT|O_RDWR|O_TRUNC); if (fd < 0) { perror("cannot open file\n"); exit(1); } for (i = 0; i < LOOP; i++) write(fd, buf, LEN); close(fd); if (umount("/root/test1/") < 0) { perror("cannot umount\n"); exit(1); } if (mount("/dev/sda1", "/root/test1/", "ext3", 0, 0) < 0) { perror("cannot mount\n"); exit(1); } fd = open("/root/test1/testfile", O_RDWR); if (fd < 0) { perror("cannot open file\n"); exit(1); } filesize = LEN * LOOP; for (i = 0; i < 300000; i++){ offset = (random() % filesize) & (~(LEN - 1)); pwrite(fd, buf, LEN, offset); } printf("start test\n"); time(&t1); for (i = 0; i < 100000; i++){ offset = (random() % filesize) & (~(LEN - 1)); pread(fd, buf, LEN, offset); } time(&t2); printf("%ld sec\n", t2-t1); close(fd); if (umount("/root/test1/") < 0) { perror("cannot umount\n"); exit(1); } } Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: Christoph Hellwig <hch@infradead.org> Cc: Jan Kara <jack@ucw.cz> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
d84a52f kdump: update kdump documentation as kexec-tools-resting has been renamed kexec-tools Signed-off-by: Simon Horman <horms@verge.net.au> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
cb1d0a7 spi_s3c24xx: really assign busnum The original "Pass the bus number we expect the S3C24XX SPI driver to attach to via the platform data." [1] patch was mis-sent, and missed two important parts of the diff, which was to actually set the bus_num field and add the relevant field to the platform data. The previous commit 50f426b55d919dd017af35bb6a08753d1f262920 promised to add a bus_num field, but failed to include the two hunks that added this field to include/asm-arm/arch-s3c2410/spi.h and then pass it to the spi core when creating the new master field in drivers/spi/spi_s3c24xx.c. [1] git commit 50f426b55d919dd017af35bb6a08753d1f262920 Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
9a7867e mpc52xx_psc_spi: fix block transfer The block transfer routine in the mpc52xx psc spi driver misinterpret the datasheet. According to the processor datasheet the chipselect is held as long as the EOF is not written. Theoretically blocks of any sizes can be transferred in this way. The old routine however writes an EOF after every word, which has the size of size_of_word. This makes the transfer slow. Also fixed some duplicate code. Signed-off-by: Luotao Fu <l.fu@pengutronix.de> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
78a34ae mm/hugetlb.c must #include <asm/io.h> This patch fixes the following build error on sh caused by commit aa888a74977a8f2120ae9332376e179c39a6b07d ("hugetlb: support larger than MAX_ORDER"): mm/hugetlb.c: In function 'alloc_bootmem_huge_page': mm/hugetlb.c:958: error: implicit declaration of function 'virt_to_phys' Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: Hirokazu Takata <takata@linux-m32r.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
cddb8a5 mmu-notifiers: core With KVM/GFP/XPMEM there isn't just the primary CPU MMU pointing to pages. There are secondary MMUs (with secondary sptes and secondary tlbs) too. sptes in the kvm case are shadow pagetables, but when I say spte in mmu-notifier context, I mean "secondary pte". In GRU case there's no actual secondary pte and there's only a secondary tlb because the GRU secondary MMU has no knowledge about sptes and every secondary tlb miss event in the MMU always generates a page fault that has to be resolved by the CPU (this is not the case of KVM where the a secondary tlb miss will walk sptes in hardware and it will refill the secondary tlb transparently to software if the corresponding spte is present). The same way zap_page_range has to invalidate the pte before freeing the page, the spte (and secondary tlb) must also be invalidated before any page is freed and reused. Currently we take a page_count pin on every page mapped by sptes, but that means the pages can't be swapped whenever they're mapped by any spte because they're part of the guest working set. Furthermore a spte unmap event can immediately lead to a page to be freed when the pin is released (so requiring the same complex and relatively slow tlb_gather smp safe logic we have in zap_page_range and that can be avoided completely if the spte unmap event doesn't require an unpin of the page previously mapped in the secondary MMU). The mmu notifiers allow kvm/GRU/XPMEM to attach to the tsk->mm and know when the VM is swapping or freeing or doing anything on the primary MMU so that the secondary MMU code can drop sptes before the pages are freed, avoiding all page pinning and allowing 100% reliable swapping of guest physical address space. Furthermore it avoids the code that teardown the mappings of the secondary MMU, to implement a logic like tlb_gather in zap_page_range that would require many IPI to flush other cpu tlbs, for each fixed number of spte unmapped. To make an example: if what happens on the primary MMU is a protection downgrade (from writeable to wrprotect) the secondary MMU mappings will be invalidated, and the next secondary-mmu-page-fault will call get_user_pages and trigger a do_wp_page through get_user_pages if it called get_user_pages with write=1, and it'll re-establishing an updated spte or secondary-tlb-mapping on the copied page. Or it will setup a readonly spte or readonly tlb mapping if it's a guest-read, if it calls get_user_pages with write=0. This is just an example. This allows to map any page pointed by any pte (and in turn visible in the primary CPU MMU), into a secondary MMU (be it a pure tlb like GRU, or an full MMU with both sptes and secondary-tlb like the shadow-pagetable layer with kvm), or a remote DMA in software like XPMEM (hence needing of schedule in XPMEM code to send the invalidate to the remote node, while no need to schedule in kvm/gru as it's an immediate event like invalidating primary-mmu pte). At least for KVM without this patch it's impossible to swap guests reliably. And having this feature and removing the page pin allows several other optimizations that simplify life considerably. Dependencies: 1) mm_take_all_locks() to register the mmu notifier when the whole VM isn't doing anything with "mm". This allows mmu notifier users to keep track if the VM is in the middle of the invalidate_range_begin/end critical section with an atomic counter incraese in range_begin and decreased in range_end. No secondary MMU page fault is allowed to map any spte or secondary tlb reference, while the VM is in the middle of range_begin/end as any page returned by get_user_pages in that critical section could later immediately be freed without any further ->invalidate_page notification (invalidate_range_begin/end works on ranges and ->invalidate_page isn't called immediately before freeing the page). To stop all page freeing and pagetable overwrites the mmap_sem must be taken in write mode and all other anon_vma/i_mmap locks must be taken too. 2) It'd be a waste to add branches in the VM if nobody could possibly run KVM/GRU/XPMEM on the kernel, so mmu notifiers will only enabled if CONFIG_KVM=m/y. In the current kernel kvm won't yet take advantage of mmu notifiers, but this already allows to compile a KVM external module against a kernel with mmu notifiers enabled and from the next pull from kvm.git we'll start using them. And GRU/XPMEM will also be able to continue the development by enabling KVM=m in their config, until they submit all GRU/XPMEM GPLv2 code to the mainline kernel. Then they can also enable MMU_NOTIFIERS in the same way KVM does it (even if KVM=n). This guarantees nobody selects MMU_NOTIFIER=y if KVM and GRU and XPMEM are all =n. The mmu_notifier_register call can fail because mm_take_all_locks may be interrupted by a signal and return -EINTR. Because mmu_notifier_reigster is used when a driver startup, a failure can be gracefully handled. Here an example of the change applied to kvm to register the mmu notifiers. Usually when a driver startups other allocations are required anyway and -ENOMEM failure paths exists already. struct kvm *kvm_arch_create_vm(void) { struct kvm *kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL); + int err; if (!kvm) return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(&kvm->arch.active_mmu_pages); + kvm->arch.mmu_notifier.ops = &kvm_mmu_notifier_ops; + err = mmu_notifier_register(&kvm->arch.mmu_notifier, current->mm); + if (err) { + kfree(kvm); + return ERR_PTR(err); + } + return kvm; } mmu_notifier_unregister returns void and it's reliable. The patch also adds a few needed but missing includes that would prevent kernel to compile after these changes on non-x86 archs (x86 didn't need them by luck). [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix mm/filemap_xip.c build] [akpm@linux-foundation.org: fix mm/mmu_notifier.c build] Signed-off-by: Andrea Arcangeli <andrea@qumranet.com> Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Cc: Jack Steiner <steiner@sgi.com> Cc: Robin Holt <holt@sgi.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Kanoj Sarcar <kanojsarcar@yahoo.com> Cc: Roland Dreier <rdreier@cisco.com> Cc: Steve Wise <swise@opengridcomputing.com> Cc: Avi Kivity <avi@qumranet.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Anthony Liguori <aliguori@us.ibm.com> Cc: Chris Wright <chrisw@redhat.com> Cc: Marcelo Tosatti <marcelo@kvack.org> Cc: Eric Dumazet <dada1@cosmosbay.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Cc: Izik Eidus <izike@qumranet.com> Cc: Anthony Liguori <aliguori@us.ibm.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
7906d00 mmu-notifiers: add mm_take_all_locks() operation mm_take_all_locks holds off reclaim from an entire mm_struct. This allows mmu notifiers to register into the mm at any time with the guarantee that no mmu operation is in progress on the mm. This operation locks against the VM for all pte/vma/mm related operations that could ever happen on a certain mm. This includes vmtruncate, try_to_unmap, and all page faults. The caller must take the mmap_sem in write mode before calling mm_take_all_locks(). The caller isn't allowed to release the mmap_sem until mm_drop_all_locks() returns. mmap_sem in write mode is required in order to block all operations that could modify pagetables and free pages without need of altering the vma layout (for example populate_range() with nonlinear vmas). It's also needed in write mode to avoid new anon_vmas to be associated with existing vmas. A single task can't take more than one mm_take_all_locks() in a row or it would deadlock. mm_take_all_locks() and mm_drop_all_locks are expensive operations that may have to take thousand of locks. mm_take_all_locks() can fail if it's interrupted by signals. When mmu_notifier_register returns, we must be sure that the driver is notified if some task is in the middle of a vmtruncate for the 'mm' where the mmu notifier was registered (mmu_notifier_invalidate_range_start/end is run around the vmtruncation but mmu_notifier_register can run after mmu_notifier_invalidate_range_start and before mmu_notifier_invalidate_range_end). Same problem for rmap paths. And we've to remove page pinning to avoid replicating the tlb_gather logic inside KVM (and GRU doesn't work well with page pinning regardless of needing tlb_gather), so without mm_take_all_locks when vmtruncate frees the page, kvm would have no way to notice that it mapped into sptes a page that is going into the freelist without a chance of any further mmu_notifier notification. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Andrea Arcangeli <andrea@qumranet.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Jack Steiner <steiner@sgi.com> Cc: Robin Holt <holt@sgi.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Kanoj Sarcar <kanojsarcar@yahoo.com> Cc: Roland Dreier <rdreier@cisco.com> Cc: Steve Wise <swise@opengridcomputing.com> Cc: Avi Kivity <avi@qumranet.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Anthony Liguori <aliguori@us.ibm.com> Cc: Chris Wright <chrisw@redhat.com> Cc: Marcelo Tosatti <marcelo@kvack.org> Cc: Eric Dumazet <dada1@cosmosbay.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Cc: Izik Eidus <izike@qumranet.com> Cc: Anthony Liguori <aliguori@us.ibm.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:21 UTC
6beeac7 mmu-notifiers: add list_del_init_rcu() Introduce list_del_init_rcu() and document it. Signed-off-by: Andrea Arcangeli <andrea@qumranet.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Jack Steiner <steiner@sgi.com> Cc: Robin Holt <holt@sgi.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Kanoj Sarcar <kanojsarcar@yahoo.com> Cc: Roland Dreier <rdreier@cisco.com> Cc: Steve Wise <swise@opengridcomputing.com> Cc: Avi Kivity <avi@qumranet.com> Cc: Hugh Dickins <hugh@veritas.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Anthony Liguori <aliguori@us.ibm.com> Cc: Chris Wright <chrisw@redhat.com> Cc: Marcelo Tosatti <marcelo@kvack.org> Cc: Eric Dumazet <dada1@cosmosbay.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Cc: Izik Eidus <izike@qumranet.com> Cc: Anthony Liguori <aliguori@us.ibm.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:20 UTC
93686ae arm: fix HAVE_CLK merge goof This fixes a merge goof whereby ARCH_EP93XX got the "select HAVE_CLK" line which belongs instead with ARCH_AT91. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:20 UTC
4d9c377 __ratelimit() cpu flags can't be static Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Dave Young <hidave.darkstar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:20 UTC
14fcc23 tmpfs: fix kernel BUG in shmem_delete_inode SuSE's insserve initscript ordering program hits kernel BUG at mm/shmem.c:814 on 2.6.26. It's using posix_fadvise on directories, and the shmem_readpage method added in 2.6.23 is letting POSIX_FADV_WILLNEED allocate useless pages to a tmpfs directory, incrementing i_blocks count but never decrementing it. Fix this by assigning shmem_aops (pointing to readpage and writepage and set_page_dirty) only when it's needed, on a regular file or a long symlink. Many thanks to Kel for outstanding bugreport and steps to reproduce it. Reported-by: Kel Modderman <kel@otaku42.de> Tested-by: Kel Modderman <kel@otaku42.de> Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:20 UTC
ca5b172 exec: include pagemap.h again to fix build Fix compilation errors on avr32 and without CONFIG_SWAP, introduced by ba92a43dbaee339cf5915ef766d3d3ffbaaf103c ("exec: remove some includes") In file included from include/asm/tlb.h:24, from fs/exec.c:55: include/asm-generic/tlb.h: In function 'tlb_flush_mmu': include/asm-generic/tlb.h:76: error: implicit declaration of function 'release_pages' include/asm-generic/tlb.h: In function 'tlb_remove_page': include/asm-generic/tlb.h:105: error: implicit declaration of function 'page_cache_release' make[1]: *** [fs/exec.o] Error 1 This straightforward part-revert is nobody's favourite patch to address the underlying tlb.h needs swap.h needs pagemap.h (but sparc won't like that) mess; but appropriate to fix the build now before any overhaul. Reported-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Reported-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Tested-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 23:30:20 UTC
56edb58 mfd: add platform_data to mfd_cell Adding platform_data to mfd_cell allows passing of platform data directly to the platform_device created for each cell and thus reuse of existing drivers. On the other side it can be used as a hook to mfd_cell itself removing the need in mfd_get_cell method. Signed-off-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com> 28 July 2008, 23:23:32 UTC
12c0b20 x86/PCI: use dev_printk when possible Convert printks to use dev_printk(). I converted DBG() to dev_dbg(). This DBG() is from arch/x86/pci/pci.h and requires source-code modification to enable, so dev_dbg() seems roughly equivalent. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 22:32:26 UTC
756f7bc Merge branch 'core/generic-dma-coherent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into for-linus 28 July 2008, 22:15:46 UTC
63add2f Merge branch 'cpus4096-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'cpus4096-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: cpu masks: optimize and clean up cpumask_of_cpu() cpumask: export cpumask_of_cpu_map cpumask: change cpumask_of_cpu_ptr to use new cpumask_of_cpu cpumask: put cpumask_of_cpu_map in the initdata section cpumask: make cpumask_of_cpu_map generic 28 July 2008, 22:13:42 UTC
3684a60 ipwireless: fix compile failure There's a brown paper bag compile failure introduced by this patch commit a01386924874c4d6d67f8a34e66f04452c2abb69 Author: David Sterba <dsterba@suse.cz> Date: Mon Jul 28 16:53:32 2008 +0200 ipwireless: Preallocate received packet buffers with MRU size Really, it can't ever have been even compile tested. It looks like the closing bracket is in the wrong place, so this is the fix. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 22:12:37 UTC
979b179 PCI: add D3 power state avoidance quirk Libata has some hacks to deal with certain controllers going silly in D3 state. The right way to handle this is to keep a PCI device flag for such devices. That can then be generalised for no ATA devices with power problems. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 22:12:11 UTC
cb28a1b Merge branch 'linus' into core/generic-dma-coherent Conflicts: arch/x86/Kconfig Signed-off-by: Ingo Molnar <mingo@elte.hu> 28 July 2008, 22:07:55 UTC
362b707 PCI: fix bogus "'device' may be used uninitialized" warning in pci_slot I get warnings about 'device' possibly being used uninitialised. While I can deduce this is not true, it seems that GCC can't. This patch changes `check_slot' to return device on success and -1 on error, which shuts GCC up. Acked-by: Alex Chiang <achiang@hp.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 22:06:00 UTC
d6d3857 PCI: add an option to allow ASPM enabled forcibly A new option, pcie_aspm=force, will force ASPM to be enabled, even on system with PCIe 1.0 devices. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 21:57:30 UTC
149e163 PCI: disable ASPM on pre-1.1 PCIe devices Disable ASPM on pre-1.1 PCIe devices, as many of them don't implement it correctly. Tested-by: Jack Howarth <howarth@bromo.msbb.uc.edu> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 21:56:57 UTC
5fde244 PCI: disable ASPM per ACPI FADT setting The ACPI FADT table includes an ASPM control bit. If the bit is set, do not enable ASPM since it may indicate that the platform doesn't actually support the feature. Tested-by: Jack Howarth <howarth@bromo.msbb.uc.edu> Signed-off-by: Shaohua Li <shaohua.li@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 21:56:09 UTC
ce6fce4 PCI MSI: Don't disable MSIs if the mask bit isn't supported David Vrabel has a device which generates an interrupt storm on the INTx pin if we disable MSI interrupts altogether. Masking interrupts is only a performance optimisation, so we can ignore the request to mask the interrupt. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 21:43:22 UTC
9e3ee1c Merge branch 'linus' into cpus4096 Conflicts: kernel/stop_machine.c Signed-off-by: Ingo Molnar <mingo@elte.hu> 28 July 2008, 21:32:00 UTC
29111f5 Merge branch 'x86/iommu' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into for-linus 28 July 2008, 21:31:10 UTC
cc5499c PCI: handle 64-bit resources better on 32-bit machines If the kernel is configured to support 64-bit resources on a 32-bit machine, we can support 64-bit BARs properly. Just change the condition to check sizeof(resource_size_t) instead of BITS_PER_LONG. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 21:29:04 UTC
6ac665c PCI: rewrite PCI BAR reading code Factor out the code to read one BAR from the loop in pci_read_bases into a new function, __pci_read_base. The new code is slightly more readable, better commented and removes the ifdef. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 21:28:53 UTC
e56b3bc cpu masks: optimize and clean up cpumask_of_cpu() Clean up and optimize cpumask_of_cpu(), by sharing all the zero words. Instead of stupidly generating all possible i=0...NR_CPUS 2^i patterns creating a huge array of constant bitmasks, realize that the zero words can be shared. In other words, on a 64-bit architecture, we only ever need 64 of these arrays - with a different bit set in one single world (with enough zero words around it so that we can create any bitmask by just offsetting in that big array). And then we just put enough zeroes around it that we can point every single cpumask to be one of those things. So when we have 4k CPU's, instead of having 4k arrays (of 4k bits each, with one bit set in each array - 2MB memory total), we have exactly 64 arrays instead, each 8k bits in size (64kB total). And then we just point cpumask(n) to the right position (which we can calculate dynamically). Once we have the right arrays, getting "cpumask(n)" ends up being: static inline const cpumask_t *get_cpu_mask(unsigned int cpu) { const unsigned long *p = cpu_bit_bitmap[1 + cpu % BITS_PER_LONG]; p -= cpu / BITS_PER_LONG; return (const cpumask_t *)p; } This brings other advantages and simplifications as well: - we are not wasting memory that is just filled with a single bit in various different places - we don't need all those games to re-create the arrays in some dense format, because they're already going to be dense enough. if we compile a kernel for up to 4k CPU's, "wasting" that 64kB of memory is a non-issue (especially since by doing this "overlapping" trick we probably get better cache behaviour anyway). [ mingo@elte.hu: Converted Linus's mails into a commit. See: http://lkml.org/lkml/2008/7/27/156 http://lkml.org/lkml/2008/7/28/320 Also applied a family filter - which also has the side-effect of leaving out the bits where Linus calls me an idio... Oh, never mind ;-) ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> 28 July 2008, 20:20:41 UTC
414f746 Merge branch 'linus' into cpus4096 28 July 2008, 19:14:43 UTC
3713907 PCI: document pci_target_state The empty kdoc was causing warnings, so provide some actual documentation. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 18:49:26 UTC
56adc59 PCI hotplug: fix typo in pcie hotplug output Comamnd->Command Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> 28 July 2008, 18:44:32 UTC
f934fb1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: add driver for Atmel integrated touchscreen controller Input: ads7846 - optimize order of calculating Rt in ads7846_rx() Input: ads7846 - fix sparse endian warnings Input: uinput - remove duplicate include Input: serio - offload resume to kseriod Input: serio - mark serio_register_driver() __must_check 28 July 2008, 16:59:26 UTC
3988ba0 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm: dlm: fix uninitialized variable for search_rsb_list callers dlm: release socket on error dlm: fix basts for granted CW waiting PR/CW dlm: check for null in device_write 28 July 2008, 16:46:00 UTC
7f71ac9 mfd: Coding style fixes Fix some coding style fixes in the mfd core driver. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Samuel Ortiz <sameo@openedhand.com> 28 July 2008, 16:29:09 UTC
96ee419 mfd: Use to_platform_device instead of container_of Convert mfd_remove_devices_fn() to use to_platform_device() instead of doing container_of(). Signed-off-by: Ben Dooks <ben-linux@fluff.org> Acked-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Samuel Ortiz <sameo@openedhand.com> 28 July 2008, 16:26:42 UTC
d9089c2 Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (25 commits) powerpc: Disable 64K hugetlb support when doing 64K SPU mappings powerpc/powermac: Fixup default serial port device for pmac_zilog powerpc/powermac: Use sane default baudrate for SCC debugging powerpc/mm: Implement _PAGE_SPECIAL & pte_special() for 64-bit powerpc: Show processor cache information in sysfs powerpc: Make core id information available to userspace powerpc: Make core sibling information available to userspace powerpc/vio: More fallout from dma_mapping_error API change ibmveth: Fix multiple errors with dma_mapping_error conversion powerpc/pseries: Fix CMO sysdev attribute API change fallout powerpc: Enable tracehook for the architecture powerpc: Add TIF_NOTIFY_RESUME support for tracehook powerpc: Add asm/syscall.h with the tracehook entry points powerpc: Make syscall tracing use tracehook.h helpers powerpc: Call tracehook_signal_handler() when setting up signal frames powerpc: Update cpu_sibling_maps dynamically powerpc: register_cpu_online should be __cpuinit powerpc: kill useless SMT code in prom_hold_cpus powerpc: Fix 8xx build failure powerpc: Fix vio build warnings ... 28 July 2008, 16:05:35 UTC
bda426f Merge git://git.kernel.org/pub/scm/linux/kernel/git/kkeil/ISDN-2.6 * git://git.kernel.org/pub/scm/linux/kernel/git/kkeil/ISDN-2.6: Remove deprecated virt_to_bus() 28 July 2008, 15:41:56 UTC
b10a8b7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (72 commits) sh: SuperH Mobile CEU and camera platform data for AP325RXA sh: Update smc911x platform data for AP325RXA sh: SuperH Mobile LCDC platform data for AP325RXA sh: Add SuperH Mobile CEU platform data for Migo-R sh: Add SuperH Mobile LCDC platform data for Migo-R sh: Move asid_cache() out of ifdef to fix SH-3/4 nommu build. sh: Workaround for __put_user_asm() bug with gcc 4.x on big-endian. sh: Wire up new syscalls. sh: fix uImage Entry Point sh_keysc: remove request_mem_region() and release_mem_region() sh: Don't miss pending signals returning to user mode after signal processing sh: Use clk_always_enable() on sh7366 sh: Use clk_always_enable() on sh7343 / SE77343 sh: Use clk_always_enable() on sh7722 / Migo-R / SE7722 sh: Use clk_always_enable() on sh7723 / ap325rxa sh: Introduce clk_always_enable() function sh: Show all clocks and their state in /proc/clocks sh: Merge sh7343 and sh7722 clock code sh: Add SuperH Mobile MSTPCR bits to clock framework sh: Use arch_flags to simplify sh7722 siu clock code ... 28 July 2008, 15:41:13 UTC
37eaf8c Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: stop_machine: fix up ftrace.c stop_machine: Wean existing callers off stop_machine_run() stop_machine(): stop_machine_run() changed to use cpu mask Hotplug CPU: don't check cpu_online after take_cpu_down Simplify stop_machine stop_machine: add ALL_CPUS option module: fix build warning with !CONFIG_KALLSYMS 28 July 2008, 15:37:46 UTC
58f2507 Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb * git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (98 commits) V4L/DVB (8549): mxl5007: Fix an error at include file V4L/DVB (8548): pwc: Fix compilation V4L/DVB (8546): add tuner-3036 and dpc7146 drivers to feature-removal-schedule.txt V4L/DVB (8546): saa7146: fix read from uninitialized memory V4L/DVB (8544): gspca: probe/open race. V4L/DVB (8543): em28xx: Rename #define for Compro VideoMate ForYou/Stereo V4L/DVB (8542): em28xx: AMD ATI TV Wonder HD 600 entry at cards struct is duplicated V4L/DVB (8541): em28xx: HVR-950 entry is duplicated. V4L/DVB (8540): em28xx-cards: Add Compro VideoMate ForYou/Stereo model V4L/DVB (8539): em28xx-cards: New supported IDs for analog models V4L/DVB (8538): em28xx-cards: Add GrabBeeX+ USB2800 model V4L/DVB (8534): remove select's of FW_LOADER V4L/DVB (8522): videodev2: Fix merge conflict V4L/DVB (8532): mxl5007t: remove excessive locks V4L/DVB (8531): mxl5007t: move i2c gate handling outside of mutex protected code blocks V4L/DVB (8530): au0828: add support for new revision of HVR950Q V4L/DVB (8529): mxl5007t: enable _init and _sleep power management functionality V4L/DVB (8528): add support for MaxLinear MxL5007T silicon tuner V4L/DVB (8526): saa7146: fix VIDIOC_ENUM_FMT V4L/DVB (8525): fix a few assorted spelling mistakes. ... 28 July 2008, 15:35:40 UTC
c32f1a3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc: Set CONFIG_HAVE_ARCH_TRACEHOOK sparc: Add task_pt_regs(). sparc: Add call to tracehook_signal_handler(). sparc: Create and use TIF_NOTIFY_RESUME. sparc: Use tracehook routines in syscall_trace(). sparc64: tracehook: CONFIG_HAVE_ARCH_TRACEHOOK sparc: Add user_stack_pointer(). sparc64: tracehook_signal_handler sparc64: tracehook: TIF_NOTIFY_RESUME sparc: Add asm/syscall.h sparc64: tracehook syscall sparc: enable headers_export again sparc, sparc64: use arch/sparc/include 28 July 2008, 15:33:25 UTC
4f31f30 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: net: missing bits of net-namespace / sysctl ipcomp: Fix warnings after ipcomp consolidation. dccp: Add check for truncated ICMPv6 DCCP error packets dccp: Fix incorrect length check for ICMPv4 packets dccp: Add check for sequence number in ICMPv6 message dccp: Fix sequence number check for ICMPv4 packets dccp: Bug-Fix - AWL was never updated dccp: Allow to distinguish original and retransmitted packets 28 July 2008, 15:32:25 UTC
1486361 SubmittingPatches: add git pull & diffstat format info Add git pull command info and diffstat summary info so that we don't have to search email archives for it repeatedly. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:31:58 UTC
1f07be1 more sysdev API change fallout - drivers/base/memory.c Noticed because of this warning: drivers/base/memory.c:279: warning: initialization from incompatible pointer type Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:31:58 UTC
b032bf7 ACPI/CPUIDLE: prevent setting pm_idle to NULL pm_idle_save resp. pm_idle_old can be NULL when the restore code in acpi_processor_cst_has_changed() resp. cpuidle_uninstall_idle_handler() is called. This can set pm_idle unconditinally to NULL, which causes the kernel to panic when calling pm_idle in the x86 idle code. This was covered by an extra check for !pm_idle in the x86 idle code, which was removed during the x86 idle code refactoring. Instead of restoring the pm_idle check in the x86 code prevent the acpi/cpuidle code to set pm_idle to NULL. Reported by: Dhaval Giani http://lkml.org/lkml/2008/7/2/309 Based on a debug patch from Ingo Molnar Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:31:58 UTC
9ffc169 Merge branch 'i2c-for-linus' of git://aeryn.fluff.org.uk/bjdooks/linux * 'i2c-for-linus' of git://aeryn.fluff.org.uk/bjdooks/linux: i2c: Blackfin I2C Driver: Functional power management support i2c: Documentation: upgrading clients HOWTO i2c: S3C24XX I2C frequency scaling support. i2c: i2c_gpio: keep probe resident for hotplugged devices. i2c: S3C2410: Pass the I2C bus number via drivers platform data 28 July 2008, 15:28:50 UTC
a013869 ipwireless: Preallocate received packet buffers with MRU size ipwireless: Preallocate received packet buffers with MRU size Packets are assembled from link size (~300 bytes) up to PPP MRU (1500 by default). Try to preallocate full size rather than repeatedly advance buffer size by 256 bytes. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
0f38c47 ipwireless: Put packets to pool start ipwireless: Put packets to pool start Put packets to pool start, try to reuse cached memory. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
bee9c7c ipwireless: Increase PPP outgoing queue size ipwireless: Increase PPP outgoing queue size Increase default size of PPP outgoing queue. Currently set to 1, which means that a packet quickly following another pushed by PPP must wait until hardware actually sends the previous and PPP has to be waken up by ppp_wakeup(). This slows down upstream. Now PPP can push more packets at once which get buffered inside driver and pushed immediatelly to hardware when previous packet is out. Experiments show that size = 10 is quite good for all connection types (GPRS/EDGE/UMTS) and gains 4 KB/sec of upload for UMTS for batch uploads. Need for higher queue size than 10 occures in only < 0.1 % of cases. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
09e491e ipwireless: Explicitly request io and mem regions ipwireless: Explicitly request io and mem regions Documentation/pcmcia/driver-changes.txt says, that driver should call request_region for used memory/io regions since PCMCIA does not do this (since 2.6.8). Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
ff3e990 ipwireless: Constify buffer variables ipwireless: Constify buffer variables Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
93110f6 ipwireless: Do not return value from sending funcs ipwireless: Do not return value from sending funcs Do not return value from do_send_fragment and do_send_packet, it's not used. The packet size checks are not useful too: * zero length packet will never be sent, caller always passes packet_header size which is either 1 or 3 * MTU check is done in caller, no need to repeat Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
d54c275 ipwireless: Remove endian-dependent bitfields ipwireless: Remove endian-dependent bitfields Remove endian-dependent bitfields and use bitmasks to transform packet header bitfields from/to machine order. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
622e713 ipwireless: Glue splitted printk strings back ipwireless: Glue splitted printk strings back Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
2fc5577 ipwireless: Remove pt_regs from interrupt handler ipwireless: Remove pt_regs from interrupt handler Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
63c4dbd ipwireless: Rename spinlock variables to lock ipwireless: Rename spinlock variables to lock Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
2e71316 ipwireless: Remove unused defines ipwireless: Remove unused defines Remove unused defines, defines hiding variables, defines hiding 0. Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
d4c0deb ipwireless: Misc cleanups ipwireless: Misc cleanups - remove likely() and some extra () in ifs - use unsigned in for loops - remove useless typecasts - remove obvious comments - add () around ?: Signed-off-by: David Sterba <dsterba@suse.cz> Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 28 July 2008, 15:28:03 UTC
00eabe7 [SCSI] qla2xxx: fix msleep compile error drivers/scsi/qla2xxx/qla_attr.c: In function 'qla24xx_vport_delete': drivers/scsi/qla2xxx/qla_attr.c:1184: error: implicit declaration of function 'msleep' make[3]: *** [drivers/scsi/qla2xxx/qla_attr.o] Error 1 make[3]: *** Waiting for unfinished jobs.... Reported-by: David Miller <davem@davemloft.net> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com> 28 July 2008, 15:13:22 UTC
958585f i2c: Blackfin I2C Driver: Functional power management support PM_SUSPEND_MEM: Blackfin does not maintain register state through Hibernate. Save and restore peripheral base initialization during PM transitions. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org> 28 July 2008, 11:41:03 UTC
31321b7 i2c: Documentation: upgrading clients HOWTO Add a document describing how i2c clients on Linux 2.6 can be moved from the old to the new driver model. Signed-off-by: Ben Dooks <ben-linux@fluff.org> 28 July 2008, 11:41:02 UTC
61c7cff i2c: S3C24XX I2C frequency scaling support. Add support for CPU frequency scaling to the S3C24XX I2C driver. Signed-off-by: Ben Dooks <ben-linux@fluff.org> 28 July 2008, 11:41:01 UTC
1efe7c5 i2c: i2c_gpio: keep probe resident for hotplugged devices. Change the i2c_gpio driver to use platform_driver_register() instead of platform_driver_probe() to ensure that is can attach to any devices that may be loaded after it has initialised. Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org> 28 July 2008, 11:40:44 UTC
399dee2 i2c: S3C2410: Pass the I2C bus number via drivers platform data Allow the platform data to specify the bus bumber that the new I2C bus will be given. This is to allow the use of the board registration mechanism to specify the new style of I2C device registration which allows boards to provide a list of attached devices. Note, as discussed on the mailing list, we have dropped backwards compatibility of adding an dynamic bus number as it should not affect most boards to have the bus pinned to 0 if they have either not specified platform data for driver. Any board supplying platform data will automatically have the bus_num field set to 0, and anyone who needs the driver on a different bus number can supply platform data to set bus_num. Signed-off-by: Ben Dooks <ben-linux@fluff.org> 28 July 2008, 11:05:26 UTC
7878ac8 Remove deprecated virt_to_bus() Please pull from git://git.kernel.org/pub/scm/linux/kernel/git/kkeil/ISDN-2.6.git master This was a forgotten item in a printk from the old driver, the DMA allocation use already the new interface. Signed-off-by: Karsten Keil <kkeil@suse.de> 28 July 2008, 10:21:25 UTC
8b2224d sh: SuperH Mobile CEU and camera platform data for AP325RXA Add AP325RXA specific platform data for on-chip sh7723 CEU and ncm03j camera. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 28 July 2008, 10:15:39 UTC
4875ea2 sh: Update smc911x platform data for AP325RXA Pass board specific smc911x parameters using struct smc911x_platdata. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 28 July 2008, 10:14:27 UTC
6968980 sh: SuperH Mobile LCDC platform data for AP325RXA Add LCD panel platform data for the AP325RXA board. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 28 July 2008, 10:08:19 UTC
1765534 sh: Add SuperH Mobile CEU platform data for Migo-R Add Migo-R specific platform data for on-chip sh7722 CEU and ov772x camera. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 28 July 2008, 09:51:07 UTC
8b1285f sh: Add SuperH Mobile LCDC platform data for Migo-R Add WVGA and QVGA LCD panel support to Migo-R. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 28 July 2008, 09:48:06 UTC
761656e sh: Move asid_cache() out of ifdef to fix SH-3/4 nommu build. Signed-off-by: Paul Mundt <lethal@linux-sh.org> 28 July 2008, 09:39:25 UTC
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