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2011-05-06btrfs: remove all unused functionsDavid Sterba
Remove static and global declarations and/or definitions. Reduces size of btrfs.ko by ~3.4kB. text data bss dec hex filename 402081 7464 200 409745 64091 btrfs.ko.base 398620 7144 200 405964 631cc btrfs.ko.remove-all Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-04btrfs: remove unused function prototypesDavid Sterba
function prototypes without a body Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: Document a mutex lock/unlock sequenceDavid Sterba
2011-05-02btrfs: drop unused parameter from btrfs_release_pathDavid Sterba
parameter tree root it's not used since commit 5f39d397dfbe140a14edecd4e73c34ce23c4f9ee ("Btrfs: Create extent_buffer interface for large blocksizes") Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: drop gfp parameter from alloc_extent_bufferDavid Sterba
pass GFP_NOFS directly to kmem_cache_alloc Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: drop gfp parameter from find_extent_bufferDavid Sterba
pass GFP_NOFS directly to kmem_cache_alloc Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: drop gfp parameter from alloc_extent_mapDavid Sterba
pass GFP_NOFS directly to kmem_cache_alloc Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: drop unused parameter from extent_map_tree_initDavid Sterba
the GFP flags are not stored anywhere and all allocations are done via alloc_extent_map(GFP_NOFS). Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: drop unused argument from extent_io_tree_initDavid Sterba
all callers pass GFP_NOFS, but the GFP mask argument is not used in the function; GFP_ATOMIC is passed to radix tree initialization and it's the only correct one, since we're using the preload/insert mechanism of radix tree. Let's drop the gfp mask from btrfs function, this will not change behaviour. Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: make functions static when possibleDavid Sterba
Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: unify checking of IS_ERR and nullDavid Sterba
use IS_ERR_OR_NULL when possible, done by this coccinelle script: @ match @ identifier id; @@ ( - BUG_ON(IS_ERR(id) || !id); + BUG_ON(IS_ERR_OR_NULL(id)); | - IS_ERR(id) || !id + IS_ERR_OR_NULL(id) | - !id || IS_ERR(id) + IS_ERR_OR_NULL(id) ) Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: fix dereference before checkDavid Sterba
The superblock's ->s_fs_info is properly set in btrfs_fill_super, after a call to open_ctree, which derefereces it before check. Although tree_root is set via btrfs_set_super, let's be defensive and leave the check in place. Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: remove nested duplicate variable declarationsDavid Sterba
Signed-off-by: David Sterba <dsterba@suse.cz>
2011-05-02btrfs: rename variables clashing with global function namesDavid Sterba
reported by gcc -Wshadow: page_index, page_offset, new_inode, dev_name Signed-off-by: David Sterba <dsterba@suse.cz>
2011-04-30Merge branch 'fixes-2.6.39' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq * 'fixes-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: workqueue: fix deadlock in worker_maybe_bind_and_lock() workqueue: Document debugging tricks Fix up trivial spelling conflict in kernel/workqueue.c
2011-04-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] pmcraid: reject negative request size [SCSI] put stricter guards on queue dead checks [SCSI] scsi_dh: fix reference counting in scsi_dh_activate error path [SCSI] mpt2sas: prevent heap overflows and unchecked reads
2011-04-29Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf, x86, nmi: Move LVT un-masking into irq handlers perf events, x86: Work around the Nehalem AAJ80 erratum perf, x86: Fix BTS condition ftrace: Build without frame pointers on Microblaze
2011-04-29Merge branch 'timer-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timer-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: hrtimer: Initialize CLOCK_ID to HRTIMER_BASE table statically rtc: max8925: Call dev_set_drvdata before rtc_device_register
2011-04-29Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: ce4100: Configure IOAPIC pins for USB and SATA to level type x86: devicetree: Configure IOAPIC pin only once x86, setup: When probing memory with e801, use ax/bx as a pair
2011-04-29Merge branch 'hwmon-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging * 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: hwmon: (lm85) Fix error paths in probe function hwmon: (lm85) Add missing list terminators hwmon: (adm1021) Clarify documentation regarding Xeon processors hwmon: (lm90) Fix update interval information in driver documentation hwmon: (lm90) Add support for ADT7461A and NCT1008
2011-04-29workqueue: fix deadlock in worker_maybe_bind_and_lock()Tejun Heo
If a rescuer and stop_machine() bringing down a CPU race with each other, they may deadlock on non-preemptive kernel. The CPU won't accept a new task, so the rescuer can't migrate to the target CPU, while stop_machine() can't proceed because the rescuer is holding one of the CPU retrying migration. GCWQ_DISASSOCIATED is never cleared and worker_maybe_bind_and_lock() retries indefinitely. This problem can be reproduced semi reliably while the system is entering suspend. http://thread.gmane.org/gmane.linux.kernel/1122051 A lot of kudos to Thilo-Alexander for reporting this tricky issue and painstaking testing. stable: This affects all kernels with cmwq, so all kernels since and including v2.6.36 need this fix. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Thilo-Alexander Ginkel <thilo@ginkel.com> Tested-by: Thilo-Alexander Ginkel <thilo@ginkel.com> Cc: stable@kernel.org
2011-04-29Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: OMAP3+: voltage: remove initial voltage OMAP4: Intialize IVA Device in addition to DSP device. omap: rx51: mark reserved memory earlier OMAP3: l3: fix for "irq 10: nobody cared" message arm: omap2: enable smc instruction for sleep34xx OMAP2/3: hwmod: fix gpio-reset timeouts seen during bootup. OMAP3: PM: Do not rely on ROM code to restore CM_AUTOIDLE_PLL.AUTO_PERIPH_DPLL OMAP2+: PM: Fix the saving of CM_AUTOIDLE_PLL register on scratchpad area OMAP4: clock data: Change DSS clock aliases OMAP2+: hwmod data: Fix wrong dma_system end address
2011-04-29hwmon: (lm85) Fix error paths in probe functionJean Delvare
We must remove all files we created, even in error cases. Fixes second part of kernel bug #34072: https://bugzilla.kernel.org/show_bug.cgi?id=34072 Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-04-29hwmon: (lm85) Add missing list terminatorsJean Delvare
Fixes kernel bug #34072: https://bugzilla.kernel.org/show_bug.cgi?id=34072 Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-04-29hwmon: (adm1021) Clarify documentation regarding Xeon processorsJean Delvare
Recent Xeon processor thermal sensors are supported by the coretemp driver and not the adm1021 driver. Only one old generation of Xeon processors (the first Netburst ones) are supported by the adm1021 driver. Reported-by: Darren Hart <dvhart@linux.intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
2011-04-29hwmon: (lm90) Fix update interval information in driver documentationGuenter Roeck
The lm90 driver's attribute update interval is configurable. Reflect this information in the driver documentation. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-04-29hwmon: (lm90) Add support for ADT7461A and NCT1008Guenter Roeck
This patch adds support for ADT7461A and NCT1008 to the lm90 driver. Both chips have identical functionality and report the same manufacturing ID and device ID values. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-04-29hrtimer: Initialize CLOCK_ID to HRTIMER_BASE table staticallyThomas Gleixner
Sedat and Bruno reported RCU stalls which turned out to be caused by the following; sched_init() calls init_rt_bandwidth() which calls hrtimer_init() _BEFORE_ hrtimers_init() is called. While not entirely correct this worked because hrtimer_init() only accessed statically initialized data (hrtimer_bases.clock_base[CLOCK_MONOTONIC]) Commit e06383db9 (hrtimers: extend hrtimer base code to handle more then 2 clockids) added an indirection to the hrtimer_bases.clock_base lookup to avoid gap handling in the hot path. The table which is used for the translataion from CLOCK_ID to HRTIMER_BASE index is initialized at runtime in hrtimers_init(). So the early call of the scheduler code translates CLOCK_MONOTONIC to HRTIMER_BASE_REALTIME. Thus the rt_bandwith timer ends up on CLOCK_REALTIME. If the timer is armed and the wall clock time is set (e.g. ntpdate in the early boot process - which also gives the problem deterministic behaviour i.e. magic recovery after N hours), then the timer ends up with an expiry time far into the future. That breaks the RT throttler mechanism as rt runtime is accumulated and never cleared, so the rt throttler detects a false cpu hog condition and blocks all RT tasks until the timer finally expires. That in turn stalls the RCU thread of TINYRCU which leads to an huge amount of RCU callbacks piling up. Make the translation table statically initialized, so we are back to the status of <= 2.6.39. Reported-and-tested-by: Sedat Dilek <sedat.dilek@gmail.com> Reported-by: Bruno Prémont <bonbons@linux-vserver.org> Cc: John stultz <johnstul@us.ibm.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/%3Calpine.LFD.2.02.1104282353140.3005%40ionos%3E Reviewed-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-28Merge branch 'drm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm/i915: restore only the mode of this driver on lastclose (v2) drm/radeon/kms: add info query for tile pipes drm/radeon/kms: add missing safe regs for 6xx/7xx drm: select FRAMEBUFFER_CONSOLE_PRIMARY if we have FRAMEBUFFER_CONSOLE
2011-04-28Merge branch 'for-2.6.39' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k * 'for-2.6.39' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k/mm: Set all online nodes in N_NORMAL_MEMORY
2011-04-28Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: nfs: don't lose MS_SYNCHRONOUS on remount of noac mount NFS: Return meaningful status from decode_secinfo() NFSv4: Ensure we request the ordinary fileid when doing readdirplus NFSv4: Ensure that clientid and session establishment can time out SUNRPC: Allow RPC calls to return ETIMEDOUT instead of EIO NFSv4.1: Don't loop forever in nfs4_proc_create_session NFSv4: Handle NFS4ERR_WRONGSEC outside of nfs4_handle_exception() NFSv4.1: Don't update sequence number if rpc_task is not sent NFSv4.1: Ensure state manager thread dies on last umount SUNRPC: Fix the SUNRPC Kerberos V RPCSEC_GSS module dependencies NFS: Use correct variable for page bounds checking NFS: don't negotiate when user specifies sec flavor NFS: Attempt mount with default sec flavor first NFS: flav_array honors NFS_MAX_SECFLAVORS NFS: Fix infinite loop in gss_create_upcall() Don't mark_inode_dirty_sync() while holding lock NFS: Get rid of pointless test in nfs_commit_done NFS: Remove unused argument from nfs_find_best_sec() NFS: Eliminate duplicate call to nfs_mark_request_dirty NFS: Remove dead code from nfs_fs_mount()
2011-04-28mm: check if PTE is already allocated during page faultMel Gorman
With transparent hugepage support, handle_mm_fault() has to be careful that a normal PMD has been established before handling a PTE fault. To achieve this, it used __pte_alloc() directly instead of pte_alloc_map as pte_alloc_map is unsafe to run against a huge PMD. pte_offset_map() is called once it is known the PMD is safe. pte_alloc_map() is smart enough to check if a PTE is already present before calling __pte_alloc but this check was lost. As a consequence, PTEs may be allocated unnecessarily and the page table lock taken. Thi useless PTE does get cleaned up but it's a performance hit which is visible in page_test from aim9. This patch simply re-adds the check normally done by pte_alloc_map to check if the PTE needs to be allocated before taking the page table lock. The effect is noticable in page_test from aim9. AIM9 2.6.38-vanilla 2.6.38-checkptenone creat-clo 446.10 ( 0.00%) 424.47 (-5.10%) page_test 38.10 ( 0.00%) 42.04 ( 9.37%) brk_test 52.45 ( 0.00%) 51.57 (-1.71%) exec_test 382.00 ( 0.00%) 456.90 (16.39%) fork_test 60.11 ( 0.00%) 67.79 (11.34%) MMTests Statistics: duration Total Elapsed Time (seconds) 611.90 612.22 (While this affects 2.6.38, it is a performance rather than a functional bug and normally outside the rules -stable. While the big performance differences are to a microbench, the difference in fork and exec performance may be significant enough that -stable wants to consider the patch) Reported-by: Raz Ben Yehuda <raziebe@gmail.com> Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Reviewed-by: Andrea Arcangeli <aarcange@redhat.com> Reviewed-by: Minchan Kim <minchan.kim@gmail.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: <stable@kernel.org> [2.6.38.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28kernel/watchdog.c: disable nmi perf event in the error path of enabling watchdogHillf Danton
In corner cases where softlockup watchdog is not setup successfully, the relevant nmi perf event for hardlockup watchdog could be disabled, then the status of the underlying hardware remains unchanged. Also, if the kthread doesn't start then the hrtimer won't run and the hardlockup detector will falsely fire. Signed-off-by: Hillf Danton <dhillf@gmail.com> Signed-off-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28um: adjust current_thread_info() for newer gcc versionsRichard Weinberger
In some cases gcc >= 4.5.2 will optimize away current_thread_info(). To prevent gcc from doing so the stack address has to be obtained via inline asm. Signed-off-by: Richard Weinberger <richard@nod.at> Acked-by: Kirill A. Shutemov <kirill@shutemov.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28uml: fix hppfs buildRandy Dunlap
Make HoneyPot ProcFS depend on CONFIG_PROC_FS so that it will build. Recommended by Christoph Hellwig. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=33692 Reported-by: Simon Danner <danner.simon@gmail.com> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28um: mdd support for 64 bit atomic operationsRichard Weinberger
This adds support for 64 bit atomic operations on 32 bit UML systems. XFS needs them since 2.6.38. $ make ARCH=um SUBARCH=i386 ... LD .tmp_vmlinux1 fs/built-in.o: In function `xlog_regrant_reserve_log_space': xfs_log.c:(.text+0xd8584): undefined reference to `atomic64_read_386' xfs_log.c:(.text+0xd85ac): undefined reference to `cmpxchg8b_emu' ... Addresses https://bugzilla.kernel.org/show_bug.cgi?id=32812 Reported-by: Martin Walch <walch.martin@web.de> Tested-by: Martin Walch <walch.martin@web.de> Cc: Martin Walch <walch.martin@web.de> Cc: <stable@kernel.org> [2.6.38.x 084189a: um: disable CONFIG_CMPXCHG_LOCAL] Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28oom: use pte pages in OOM scoreKOSAKI Motohiro
PTE pages eat up memory just like anything else, but we do not account for them in any way in the OOM scores. They are also _guaranteed_ to get freed up when a process is OOM killed, while RSS is not. Reported-by: Dave Hansen <dave@linux.vnet.ibm.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Oleg Nesterov <oleg@redhat.com> Acked-by: David Rientjes <rientjes@google.com> Cc: <stable@kernel.org> [2.6.36+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28MAINTAINERS: add EXYNOS ARM architecturesKukjin Kim
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28memcg: update documentation to describe usage_in_bytesDaisuke Nishimura
Since 569b846d ("memcg: coalesce uncharge during unmap/truncate"), we do batched (delayed) uncharge at truncation/unmap. And since cdec2e42(memcg: coalesce charging via percpu storage), we have percpu cache for res_counter. These changes improved performance of memory cgroup very much, but made res_counter->usage usually have a bigger value than the actual value of memory usage. So, *.usage_in_bytes, which show res_counter->usage, are not desirable for precise values of memory(and swap) usage anymore. Instead of removing these files completely(because we cannot know res_counter->usage without them), this patch updates the meaning of those files. Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Balbir Singh <balbir@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28MAINTAINERS: update Documentation file entry of GPIO subsystemKukjin Kim
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28MAINTAINERS: re-alphabetize Xen entriesIan Campbell
Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28mm: thp: fix /dev/zero MAP_PRIVATE and vm_flags cleanupsAndrea Arcangeli
The huge_memory.c THP page fault was allowed to run if vm_ops was null (which would succeed for /dev/zero MAP_PRIVATE, as the f_op->mmap wouldn't setup a special vma->vm_ops and it would fallback to regular anonymous memory) but other THP logics weren't fully activated for vmas with vm_file not NULL (/dev/zero has a not NULL vma->vm_file). So this removes the vm_file checks so that /dev/zero also can safely use THP (the other albeit safer approach to fix this bug would have been to prevent the THP initial page fault to run if vm_file was set). After removing the vm_file checks, this also makes huge_memory.c stricter in khugepaged for the DEBUG_VM=y case. It doesn't replace the vm_file check with a is_pfn_mapping check (but it keeps checking for VM_PFNMAP under VM_BUG_ON) because for a is_cow_mapping() mapping VM_PFNMAP should only be allowed to exist before the first page fault, and in turn when vma->anon_vma is null (so preventing khugepaged registration). So I tend to think the previous comment saying if vm_file was set, VM_PFNMAP might have been set and we could still be registered in khugepaged (despite anon_vma was not NULL to be registered in khugepaged) was too paranoid. The is_linear_pfn_mapping check is also I think superfluous (as described by comment) but under DEBUG_VM it is safe to stay. Addresses https://bugzilla.kernel.org/show_bug.cgi?id=33682 Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Reported-by: Caspar Zhang <bugs@casparzhang.com> Acked-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Rik van Riel <riel@redhat.com> Cc: <stable@kernel.org> [2.6.38.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28vfs: avoid large kmalloc()s for the fdtableAndrew Morton
Azurit reports large increases in system time after 2.6.36 when running Apache. It was bisected down to a892e2d7dcdfa6c76e6 ("vfs: use kmalloc() to allocate fdmem if possible"). That patch caused the vfs to use kmalloc() for very large allocations and this is causing excessive work (and presumably excessive reclaim) within the page allocator. Fix it by falling back to vmalloc() earlier - when the allocation attempt would have been considered "costly" by reclaim. Reported-by: azurIt <azurit@pobox.sk> Tested-by: azurIt <azurit@pobox.sk> Acked-by: Changli Gao <xiaosuo@gmail.com> Cc: Americo Wang <xiyou.wangcong@gmail.com> Cc: Jiri Slaby <jslaby@suse.cz> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-04-28x86: ce4100: Configure IOAPIC pins for USB and SATA to level typeSebastian Andrzej Siewior
The USB and SATA ioapic interrrupt pins are configured as edge type, but need to be level type interrupts to work correctly. [ tglx: Split out from the combo patch ] Cc: Torben Hohn <torbenh@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: http://lkml.kernel.org/r/%3C20110427143052.GA15211%40linutronix.de%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-28x86: devicetree: Configure IOAPIC pin only onceSebastian Andrzej Siewior
We use io_apic_setup_irq_pin() in order to configure pin's interrupt number polarity and type. This is done on every irq_create_of_mapping() which happens for instance during pci enable calls. Level typed interrupts are masked by default, edge are unmasked. On the first ->xlate() call the level interrupt is configured and masked. The driver calls request_irq() and the line is unmasked. Lets assume the interrupt line is shared with another device and we call pci_enable_device() for this device. The ->xlate() configures the pin again and it is masked. request_irq() does not unmask the line because it _is_ already unmasked according to its internal state. So the interrupt will never be unmasked again. This patch is based on an earlier work by Torben Hohn and solves the problem by configuring the pin only once. Since all devices must agree on the same type and polarity there is no point in configuring the pin more than once. [ tglx: Split out the ce4100 part into a separate patch ] Cc: Torben Hohn <torbenh@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Link: http://lkml.kernel.org/r/%3C20110427143052.GA15211%40linutronix.de%3E Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-28rtc: max8925: Call dev_set_drvdata before rtc_device_registerZhangfei Gao
We call rtc_read_alarm from rtc_device_register, so it is important that the rtc device is fully initialized prior to registration. rtc-max8925 sets drvdata after register, so the rtc_read_alarm code dereferences a NULL pointer. Call dev_set_drvdata before rtc_device_register. [ jstultz/tglx: Massaged commit message ] Signed-off-by: Zhangfei Gao <zhangfei.gao@marvell.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Link: http://lkml.kernel.org/r/%3C1303929869-25249-1-git-send-email-john.stultz%40linaro.org%3E Signed-off-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2011-04-27Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6 * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6: [PARISC] slub: fix panic with DISCONTIGMEM [PARISC] set memory ranges in N_NORMAL_MEMORY when onlined
2011-04-27Merge branch 'pm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: ACPI / PM: Avoid infinite recurrence while registering power resources PM / Wakeup: Fix initialization of wakeup-related device sysfs files
2011-04-27Merge branch 'spell-fix' of git://git.profusion.mobi/users/lucas/linux-2.6Linus Torvalds
* 'spell-fix' of git://git.profusion.mobi/users/lucas/linux-2.6: Revert wrong fixes for common misspellings
2011-04-27Merge branch 'v4l_for_linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (42 commits) [media] media: vb2: correct queue initialization order [media] media: vb2: fix incorrect v4l2_buffer->flags handling [media] s5p-fimc: Add support for the buffer timestamps and sequence [media] s5p-fimc: Fix bytesperline and plane payload setup [media] s5p-fimc: Do not allow changing format after REQBUFS [media] s5p-fimc: Fix FIMC3 pixel limits on Exynos4 [media] tda18271: update tda18271c2_rf_cal as per NXP's rev.04 datasheet [media] tda18271: update tda18271_rf_band as per NXP's rev.04 datasheet [media] tda18271: fix bad calculation of main post divider byte [media] tda18271: prog_cal and prog_tab variables should be s32, not u8 [media] tda18271: fix calculation bug in tda18271_rf_tracking_filters_init [media] omap3isp: queue: Don't corrupt buf->npages when get_user_pages() fails [media] v4l: Don't register media entities for subdev device nodes [media] omap3isp: Don't increment node entity use count when poweron fails [media] omap3isp: lane shifter support [media] omap3isp: ccdc: support Y10/12, 8-bit bayer fmts [media] media: add missing 8-bit bayer formats and Y12 [media] v4l: add V4L2_PIX_FMT_Y12 format cx23885: Fix stv0367 Kconfig dependency [media] omap3isp: Use isp xclk defines ... Fix up trivial conflict (spelink errurs) in drivers/media/video/omap3isp/isp.c
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