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2009-12-23Driver core: device_attribute parameters can often be const*Phil Carmody
Most device_attributes are const, and are begging to be put in a ro section. However, the create and remove file interfaces were failing to propagate the const promise which the only functions they call offer. Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23Doc/stable rules: add new cherry-pick logicSebastian Andrzej Siewior
- it is possible to submit patches for the stable queue without sending them directly stable@kernel.org. If the tag (Cc: stable@kernel.org) is available in the sign-off area than hpa's script will filter them into the stable mailbox once it hits Linus' tree. - Patches which require others to be applied first can be also specified. This was discussued in http://lkml.org/lkml/2009/11/9/474 Signed-off-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Cc: Brandon Philips <brandon@ifup.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23vfs: get_sb_single() - do not pass options twiceKay Sievers
Filesystem code usually destroys the option buffer while parsing it. This leads to errors when the same buffer is passed twice. In case we fill a new superblock do not call remount. This is needed to quite a warning that the debugfs code causes every boot. Cc: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23devtmpfs: Convert dirlock to a mutexThomas Gleixner
devtmpfs has a rw_lock dirlock which serializes delete_path and create_path. This code was obviously never tested with the usual set of debugging facilities enabled. In the dirlock held sections the code calls: - vfs functions which take mutexes - kmalloc(, GFP_KERNEL) In both code pathes the might sleep warning triggers and spams dmesg. Convert the rw_lock to a mutex. There is no reason why this needs to be a rwlock. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: stable <stable@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-12-23Merge branch 'drm-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (35 commits) drm/radeon/kms: add definitions for v4 power tables drm/radeon/kms: never combine LVDS with another encoder drm/radeon/kms: Check module arguments to be valid V2 drm/radeon/kms: Avoid crash when trying to cleanup uninitialized structure drm/radeon/kms: add cvt mode if we only have lvds w/h and no edid (v4) drm/radeon/kms: add 3DC compression support drm/radeon/kms: allow rendering while no colorbuffer is set on r300 drm/radeon/kms: enable memory clock reading on legacy (V2) drm/radeon/kms: prevent parallel AtomBIOS calls drm/radeon/kms: set proper default tv standard drm/radeon/kms: fix legacy rmx drm/radeon/kms/atom: fill in proper defines for digital setup drm/kms: silencing a false positive warning. drm/mm: fix logic for selection of best fit block drm/vmwgfx: Use TTM handles instead of SIDs as user-space surface handles. drm/vmwgfx: Return -ERESTARTSYS when interrupted by a signal. drm/vmwgfx: Fix unlocked ioctl and add proper access control drm/radeon: fix build on 64-bit with some compilers. drivers/gpu: Use kzalloc for allocating only one thing DRM: Rename clamp variable ...
2009-12-23Fix usb_serial_probe() problem introduced by the recent kfifo changesStefani Seibold
The USB serial code was a new user of the kfifo API, and it was missed when porting things to the new kfifo API. Please make the write_fifo in place. Here is my patch to fix the regression and full ported version. Signed-off-by: Stefani Seibold <stefani@seibold.net> Reported-and-tested-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-23Merge remote branch 'korg/drm-radeon-next' into drm-linusDave Airlie
* korg/drm-radeon-next: drm/radeon/kms: add definitions for v4 power tables drm/radeon/kms: never combine LVDS with another encoder drm/radeon/kms: Check module arguments to be valid V2 drm/radeon/kms: Avoid crash when trying to cleanup uninitialized structure drm/radeon/kms: add cvt mode if we only have lvds w/h and no edid (v4) drm/radeon/kms: add 3DC compression support drm/radeon/kms: allow rendering while no colorbuffer is set on r300 drm/radeon/kms: enable memory clock reading on legacy (V2) drm/radeon/kms: prevent parallel AtomBIOS calls drm/radeon/kms: set proper default tv standard drm/radeon/kms: fix legacy rmx drm/radeon/kms/atom: fill in proper defines for digital setup
2009-12-23drm/radeon/kms: add definitions for v4 power tablesAlex Deucher
[airlied: just adding this for completeness to avoid drift between public atombios.h files] Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: never combine LVDS with another encoderAlex Deucher
When linking multiple encoders to a connector, make sure to not link LVDS with another connector. Some bioses have the same i2c line for LVDS and VGA. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: Check module arguments to be valid V2Jerome Glisse
This patch add a function which check module argument to be valid. On invalid argument it prints a warning and setback the default value. V2: Allow 0 for vram limit & agp mode which are the default value Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: Avoid crash when trying to cleanup uninitialized structureJerome Glisse
Add boolean to record if some part of the driver are initialized or not this allow to avoid a crash when trying to cleanup uninitialized structure members. Signed-off-by: Jerome Glisse <jglisse@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: add cvt mode if we only have lvds w/h and no edid (v4)Alex Deucher
This fixes LVDS on some mac laptops without a panel edid. v2 - Set proper mode type flags v3 - Note that this is not neceesarily the exact panel mode, but an approximation based on the cvt formula. For these systems we should ideally read the mode info out of the registers or add a mode table, but this works and is much simpler. v4 - Update comments and debug message. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: add 3DC compression supportMarek Olšák
There are 2 formats: ATI1N: 64 bits per 4x4 block, one-channel format ATI2N: 128 bits per 4x4 block, two-channel format Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: allow rendering while no colorbuffer is set on r300Marek Olšák
Because hardware cannot disable all colorbuffers directly to do depth-only rendering, a user should: - disable reading from a colorbuffer in blending - disable fastfill - set the color channel mask to 0 to prevent writing to a colorbuffer Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: enable memory clock reading on legacy (V2)Rafał Miłecki
V2: detect IGP cards (which don't have own memory) Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Acked-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: prevent parallel AtomBIOS callsRafał Miłecki
This just adds a mutex around the atombios table execution so we don't call it from two contexts at once. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: set proper default tv standardAlex Deucher
we were just using 1 before. reported on irc by soreau Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms: fix legacy rmxAlex Deucher
This makes 640x480 on my R100 work again, both in aspect and centered mode. Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Tested-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon/kms/atom: fill in proper defines for digital setupAlex Deucher
Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23Merge remote branch 'nouveau/for-airlied' into drm-linusDave Airlie
* nouveau/for-airlied: drm/nouveau: fix bug causing pinned buffers to lose their NO_EVICT flag drm/nv50: fix suspend/resume delays without firmware present drm/nouveau: prevent all channel creation if accel not available drm/nv50: fix two potential suspend/resume oopses drm/nv40: implement ctxprog/state generation drm/nv10: Add the initial graph context and soft methods needed for LMA. drm/nouveau: Fix up buffer eviction, and evict them to GART, if possible. drm/nouveau: Add proper error handling to nouveau_card_init drm/nv04: Fix NV04 set_operation software method. drm/nouveau: Kill global state in BIOS script interpreter drm/nouveau: Kill global state in NvShadowBIOS drm/nouveau: use drm debug levels drm/i2c/ch7006: Fix load detection false positives right after system init. drm/nv04-nv40: Fix "conflicting memory types" when saving/restoring VGA fonts.
2009-12-23drm/kms: silencing a false positive warning.Marin Mitov
warning: 'width' may be used uninitialized in this function drivers/gpu/drm/drm_edid.c Signed-off-by: Marin Mitov <mitov@issp.bas.bg> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/mm: fix logic for selection of best fit blockBob Gleitsmann
This is from bug 25728. [airlied: I'm just forwarding the patch for review, Thomas, ickle?] Acked-by: Jerome Glisse <jglisse@redhat.com> Acked-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/vmwgfx: Use TTM handles instead of SIDs as user-space surface handles.Thomas Hellstrom
Improve the command verifier to catch all occurences of surface handles, and translate to SIDs. This way DMA buffers and 3D surfaces share a common handle space, which makes it possible for the kms code to differentiate. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/vmwgfx: Return -ERESTARTSYS when interrupted by a signal.Thomas Hellstrom
Fixes for TTM API change. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Jakob Bornecrantz <jakob@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/vmwgfx: Fix unlocked ioctl and add proper access controlThomas Hellstrom
This fixes up vmwgfx for the unlocked ioctl code to avoid doing it in the driver. Also adds ioctl flags. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Jakob Bornecrantz <jakob@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drm/radeon: fix build on 64-bit with some compilers.Dave Airlie
drivers/gpu/drm/radeon/radeon_test.c:45: undefined reference to `__udivdi3' Reported-by: Mr. James W. Laferriere <babydr@baby-dragons.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23drivers/gpu: Use kzalloc for allocating only one thingJulia Lawall
Use kzalloc rather than kcalloc(1,...) The use of the allocated memory that looks like an array is &p->relocs[0], but this should be the same as p->relocs. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ @@ - kcalloc(1, + kzalloc( ...) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-23DRM: Rename clamp variableAndi Kleen
linux/kernel.h has a "clamp" macro, but r300_cmdbuf also uses a variable with the same name. Right now it doesn't seem to include the header, but sooner or later someone will. So better rename the variable now. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2009-12-22Merge branch 'upstream-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: pata_bf54x: handle portmuxing of pins through GPIO PORTs
2009-12-22Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: PM: Runtime PM documentation update PM / Runtime: Use device type and device class callbacks PM: Use pm_runtime_put_sync in system resume PM: Measure device suspend and resume times PM: Make the initcall_debug style timing for suspend/resume complete
2009-12-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: jfs: Fix 32bit build warning Remove obsolete comment in fs.h Sanitize f_flags helpers Fix f_flags/f_mode in case of lookup_instantiate_filp() from open(pathname, 3) anonfd: Allow making anon files read-only fs/compat_ioctl.c: fix build error when !BLOCK pohmelfs needs I_LOCK alloc_file(): simplify handling of mnt_clone_write() errors
2009-12-22Merge branch 'for-upstream' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb * 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb: MAINTAINERS: update entries for WUSB, UWB and WLP subsystems
2009-12-22Merge branch 'merge' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (36 commits) powerpc/gc/wii: Remove get_irq_desc() powerpc/gc/wii: hlwd-pic: convert irq_desc.lock to raw_spinlock powerpc/gamecube/wii: Fix off-by-one error in ugecon/usbgecko_udbg powerpc/mpic: Fix problem that affinity is not updated powerpc/mm: Fix stupid bug in subpge protection handling powerpc/iseries: use DECLARE_COMPLETION_ONSTACK for non-constant completion powerpc: Fix MSI support on U4 bridge PCIe slot powerpc: Handle VSX alignment faults correctly in little-endian mode powerpc/mm: Fix typo of cpumask_clear_cpu() powerpc/mm: Fix hash_utils_64.c compile errors with DEBUG enabled. powerpc: Convert BUG() to use unreachable() powerpc/pseries: Make declarations of cpu_hotplug_driver_lock() ANSI compatible. powerpc/pseries: Don't panic when H_PROD fails during cpu-online. powerpc/mm: Fix a WARN_ON() with CONFIG_DEBUG_PAGEALLOC and CONFIG_DEBUG_VM powerpc/defconfigs: Set HZ=100 on pseries and ppc64 defconfigs powerpc/defconfigs: Disable token ring in powerpc defconfigs powerpc/defconfigs: Reduce 64bit vmlinux by making acenic and cramfs modules powerpc/pseries: Select XICS and PCI_MSI PSERIES powerpc/85xx: Wrong variable returned on error powerpc/iseries: Convert to proc_fops ...
2009-12-22media video cx23888 driver: ported to new kfifo APIStefani Seibold
Fix the cx23888 driver to use the new kfifo API. Using kfifo_reset() may result in a possible race conditions. This patch fixes it by using a spinlock around the kfifo_reset() function. Signed-off-by: Stefani Seibold <stefani@seibold.net> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Reviewed-by: Andy Walls <awalls@radix.net> Acked-by: Andy Walls <awalls@radix.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: add record handling functionsStefani Seibold
Add kfifo_in_rec() - puts some record data into the FIFO Add kfifo_out_rec() - gets some record data from the FIFO Add kfifo_from_user_rec() - puts some data from user space into the FIFO Add kfifo_to_user_rec() - gets data from the FIFO and write it to user space Add kfifo_peek_rec() - gets the size of the next FIFO record field Add kfifo_skip_rec() - skip the next fifo out record Add kfifo_avail_rec() - determinate the number of bytes available in a record FIFO Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: add kfifo_skip, kfifo_from_user and kfifo_to_userStefani Seibold
Add kfifo_reset_out() for save lockless discard the fifo output Add kfifo_skip() to skip a number of output bytes Add kfifo_from_user() to copy user space data into the fifo Add kfifo_to_user() to copy fifo data to user space Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: add DEFINE_KFIFO and friends, add very tiny functionsStefani Seibold
Add DECLARE_KFIFO - macro to declare a kfifo and the associated buffer inside a struct Add INIT_KFIFO - Initialize a kfifo declared by DECLARED_KFIFO Add DEFINE_KFIFO - macro to define and initialize a kfifo as a global or local object Add kfifo_size() - returns the size of the fifo in bytes Add kfifo_is_empty() - returns true if the fifo is empty Add kfifo_is_full() - returns true if the fifo is full Add kfifo_avail() - returns the number of bytes available in the FIFO Do some code cleanup Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: fix warn_unused_resultStefani Seibold
Fix the "ignoring return value of '...', declared with attribute warn_unused_result" compiler warning in several users of the new kfifo API. It removes the __must_check attribute from kfifo_in() and kfifo_in_locked() which must not necessary performed. Fix the allocation bug in the nozomi driver file, by moving out the kfifo_alloc from the interrupt handler into the probe function. Fix the kfifo_out() and kfifo_out_locked() users to handle a unexpected end of fifo. Signed-off-by: Stefani Seibold <stefani@seibold.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: rename kfifo_put... into kfifo_in... and kfifo_get... into kfifo_out...Stefani Seibold
rename kfifo_put... into kfifo_in... to prevent miss use of old non in kernel-tree drivers ditto for kfifo_get... -> kfifo_out... Improve the prototypes of kfifo_in and kfifo_out to make the kerneldoc annotations more readable. Add mini "howto porting to the new API" in kfifo.h Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: cleanup namespaceStefani Seibold
change name of __kfifo_* functions to kfifo_*, because the prefix __kfifo should be reserved for internal functions only. Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: move out spinlockStefani Seibold
Move the pointer to the spinlock out of struct kfifo. Most users in tree do not actually use a spinlock, so the few exceptions now have to call kfifo_{get,put}_locked, which takes an extra argument to a spinlock. Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22kfifo: move struct kfifo in placeStefani Seibold
This is a new generic kernel FIFO implementation. The current kernel fifo API is not very widely used, because it has to many constrains. Only 17 files in the current 2.6.31-rc5 used it. FIFO's are like list's a very basic thing and a kfifo API which handles the most use case would save a lot of development time and memory resources. I think this are the reasons why kfifo is not in use: - The API is to simple, important functions are missing - A fifo can be only allocated dynamically - There is a requirement of a spinlock whether you need it or not - There is no support for data records inside a fifo So I decided to extend the kfifo in a more generic way without blowing up the API to much. The new API has the following benefits: - Generic usage: For kernel internal use and/or device driver. - Provide an API for the most use case. - Slim API: The whole API provides 25 functions. - Linux style habit. - DECLARE_KFIFO, DEFINE_KFIFO and INIT_KFIFO Macros - Direct copy_to_user from the fifo and copy_from_user into the fifo. - The kfifo itself is an in place member of the using data structure, this save an indirection access and does not waste the kernel allocator. - Lockless access: if only one reader and one writer is active on the fifo, which is the common use case, no additional locking is necessary. - Remove spinlock - give the user the freedom of choice what kind of locking to use if one is required. - Ability to handle records. Three type of records are supported: - Variable length records between 0-255 bytes, with a record size field of 1 bytes. - Variable length records between 0-65535 bytes, with a record size field of 2 bytes. - Fixed size records, which no record size field. - Preserve memory resource. - Performance! - Easy to use! This patch: Since most users want to have the kfifo as part of another object, reorganize the code to allow including struct kfifo in another data structure. This requires changing the kfifo_alloc and kfifo_init prototypes so that we pass an existing kfifo pointer into them. This patch changes the implementation and all existing users. [akpm@linux-foundation.org: fix warning] Signed-off-by: Stefani Seibold <stefani@seibold.net> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22mm tracing: cleanup Documentation/trace/events-kmem.txtRandy Dunlap
Clean up typos/grammos/spellos in events-kmem.txt. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22lib/string.c: fix kernel-doc warningsRandy Dunlap
Fix kernel-doc warnings (@arg name) in string.c::skip_spaces(). Warning(lib/string.c:347): No description found for parameter 'str' Warning(lib/string.c:347): Excess function parameter 's' description in 'skip_spaces' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22Revert "time: Remove xtime_cache"Linus Torvalds
This reverts commit 7bc7d637452383d56ba4368d4336b0dde1bb476d, as requested by John Stultz. Quoting John: "Petr Titěra reported an issue where he saw odd atime regressions with 2.6.33 where there were a full second worth of nanoseconds in the nanoseconds field. He also reviewed the time code and narrowed down the problem: unhandled overflow of the nanosecond field caused by rounding up the sub-nanosecond accumulated time. Details: * At the end of update_wall_time(), we currently round up the sub-nanosecond portion of accumulated time when storing it into xtime. This was added to avoid time inconsistencies caused when the sub-nanosecond portion was truncated when storing into xtime. Unfortunately we don't handle the possible second overflow caused by that rounding. * Previously the xtime_cache code hid this overflow by normalizing the xtime value when storing into the xtime_cache. * We could try to handle the second overflow after the rounding up, but since this affects the timekeeping's internal state, this would further complicate the next accumulation cycle, causing small errors in ntp steering. As much as I'd like to get rid of it, the xtime_cache code is known to work. * The correct fix is really to include the sub-nanosecond portion in the timekeeping accessor function, so we don't need to round up at during accumulation. This would greatly simplify the accumulation code. Unfortunately, we can't do this safely until the last three non-GENERIC_TIME arches (sparc32, arm, cris) are converted (those patches are in -mm) and we kill off the spots where arches set xtime directly. This is all 2.6.34 material, so I think reverting the xtime_cache change is the best approach for now. Many thanks to Petr for both reporting and finding the issue!" Reported-by: Petr Titěra <P.Titera@century.cz> Requested-by: john stultz <johnstul@us.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-22PM: Runtime PM documentation updateAlan Stern
This patch (as1318) updates the runtime PM documentation, adding a section discussing the interaction between runtime PM and system sleep. [rjw: Rebased and made it agree with the other updates better.] Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-12-22PM / Runtime: Use device type and device class callbacksRafael J. Wysocki
The power management of some devices is handled through device types and device classes rather than through bus types. Since these devices may also benefit from using the run-time power management core, extend it so that the device type and device class run-time PM callbacks can be taken into consideration by it if the bus type callback is not defined. Update the run-time PM core documentation to reflect this change. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-12-22jfs: Fix 32bit build warningAlan Cox
loff_t is a type that isn't entirely dependant upon 32 v 64bit choice Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-22Remove obsolete comment in fs.hAndreas Gruenbacher
This question was determined to be a bug which was fixed in commit 4a3b0a49. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Cc: Jan Blunck <jblunck@suse.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-12-22Sanitize f_flags helpersAl Viro
* pull ACC_MODE to fs.h; we have several copies all over the place * nightmarish expression calculating f_mode by f_flags deserves a helper too (OPEN_FMODE(flags)) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>