24 Dec, 2008
1 commit
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Use ls_allocation for memory allocations, which a cluster fs sets to
GFP_NOFS. Use GFP_NOFS for allocations when no lockspace struct is
available. Taking dlm locks needs to avoid calling back into the
cluster fs because write-out can require taking dlm locks.Cc: Christine Caulfield
Signed-off-by: Steven Whitehouse
Signed-off-by: David Teigland
14 Nov, 2008
8 commits
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* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: ignore bit0 of _OSC return code -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
dlm: fix shutdown cleanup -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
slab: document SLAB_DESTROY_BY_RCU
Kconfig: SLUB is the default slab allocator -
* master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] cdb89712: avoid namespace clashes with SRAM_ and BOOTROM_ constants
[ARM] cdb89712,clps7500,h720x: avoid namespace clash for FLASH_* constants
[ARM] integrator,realview,versatile: remove FLASH_* and EPROM_* constants
[ARM] dma-mapping: fix compiler warning
[ARM] iop: iop3xx needs registers mapped uncached+unbuffered
[ARM] versatile: correct MMC clock rate
[ARM] realview: correct MMC clock rate
[ARM] 5329/1: Feroceon: fix feroceon_l2_inv_range -
Commit 2d3854a37e8b767a51aba38ed6d22817b0631e33 ("cpumask: introduce new
API, without changing anything") introduced a build breakage on parisc.This trivial patch fixes it.
Signed-off-by: Helge Deller
Cc: Rusty Russell
Cc: Andrew Morton
Cc: Kyle Mc Martin
Signed-off-by: Linus Torvalds -
Fixes a regression from commit 0f8e0d9a317406612700426fad3efab0b7bbc467,
"dlm: allow multiple lockspace creates".An extraneous 'else' slipped into a code fragment being moved from
release_lockspace() to dlm_release_lockspace(). The result of the
unwanted 'else' is that dlm threads and structures are not stopped
and cleaned up when the final dlm lockspace is removed. Trying to
create a new lockspace again afterward will fail with
"kmem_cache_create: duplicate cache dlm_conn" because the cache
was not previously destroyed.Signed-off-by: David Teigland
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Explain this SLAB_DESTROY_BY_RCU thing...
[hugh@veritas.com: add a pointer to comment in mm/slab.c]
Signed-off-by: Peter Zijlstra
Acked-by: Jens Axboe
Acked-by: Paul E. McKenney
Acked-by: Christoph Lameter
Signed-off-by: Hugh Dickins
Signed-off-by: Pekka Enberg -
In 2007, a0acd820807680d2ccc4ef3448387fcdbf152c73 changed the default
slab allocator to SLUB, but the SLAB help text still says SLAB is the
default. This change fixes that.Signed-off-by: Simon Arlott
Signed-off-by: Pekka Enberg
13 Nov, 2008
31 commits
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Signed-off-by: Russell King
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Signed-off-by: Russell King
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FLASH_* and EPROM_* constants are unused, and clash with drivers:
drivers/atm/ambassador.h:257:1: warning: "FLASH_BASE" redefined
drivers/atm/ambassador.h:258:1: warning: "FLASH_SIZE" redefined
drivers/atm/iphase.h:332:1: warning: "EPROM_SIZE" redefinedso remove them.
Signed-off-by: Russell King
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arch/arm/mm/dma-mapping.c: In function `dma_sync_sg_for_cpu':
arch/arm/mm/dma-mapping.c:588: warning: statement with no effectSigned-off-by: Russell King
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…l/git/tip/linux-2.6-tip
* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
sched: fix init_idle()'s use of sched_clock()
sched: fix stale value in average load per task -
Signed-off-by: Rodolfo Giometti
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
C2port implements a two wire serial communication protocol (bit
banging) designed to enable in-system programming, debugging, and
boundary-scan testing on low pin-count Silicon Labs devices.Currently this code supports only flash programming through sysfs
interface but extensions shoud be easy to add.Signed-off-by: Rodolfo Giometti
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a brief document about omap2430/3430 HDQ/1-wire driver.
Signed-off-by: Madhusudhan Chikkature
Acked-by: Evgeniy Polyakov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide the BQ27000 slave interface driver.
Signed-off-by: Madhusudhan Chikkature
Acked-by: Evgeniy Polyakov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The HDQ/1-Wire module of TI OMAP2430/3430 platforms implement the hardware
protocol of the master functions of the Benchmark HDQ and the Dallas
Semiconductor 1-Wire protocols. These protocols use a single wire for
communication between the master (HDQ/1-Wire controller) and the slave
(HDQ/1-Wire external compliant device).This patch provides the HDQ driver to suppport TI OMAP2430/3430 platforms.
Signed-off-by: Madhusudhan Chikkature
Acked-by: Felipe Balbi
Acked-by: Evgeniy Polyakov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Export the w1_read_8 function for use of drivers. The OMAP HDQ
driver(drivers/w1/masters/omap_hdq.c) uses this function.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Madhusudhan Chikkature
Acked-by: Evgeniy Polyakov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for the Dallas DS1390/93/94 SPI RTC chip.
Signed-off-by: Mark Jackson
Acked-by: Alessandro Zummo
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide the basic "get" and "set" functionality for the Epson RX-8581 I2C
RTC. It currently does not support the RTC's Alarm or Fixed-cycle timer.[akpm@linux-foundation.org: need log2.h for ilog2(), remove unneeded initialisation]
Signed-off-by: Martyn Welch
Signed-off-by: Alessandro Zummo
Cc: David Brownell
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds support for the RTC provided by the Wolfson Microelectronics
WM8350.This driver was originally written by Graeme Gregory and Liam Girdwood,
though it has been modified since then to update it to current mainline
coding standards and for API completeness.[akpm@linux-foundation.org: s/schedule_timeout_interruptible/schedule_timeout_uninterruptible/ to prevent bogus timeout when signal_pending()]
Signed-off-by: Mark Brown
Cc: Alessandro Zummo
Cc: David Brownell
Cc: Liam Girdwood
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The ics932s401 is a clock generator chip. This driver allows users to
read the current clock outputs.Signed-off-by: Darrick J. Wong
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
New driver to play with. As Jean mentioned a couple of years ago, this
chip is a beast with odd combinations of 8 fans, 4 temperatures, and 13
voltage sensors. This driver has been tested on an IntelliStation Z30.Signed-off-by: Darrick J. Wong
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds a driver to the accelerometer sensor found in several HP
laptops (under the commercial names of "HP Mobile Data Protection System
3D" and "HP 3D driveguard"). It tries to have more or less the same
interfaces as the hdaps and other accelerometer drivers: in sysfs and as
a joystick.This driver was first written by Yan Burman. Eric Piel has updated it
and slimed it up (including the removal of an interface to access to the
free-fall feature of the sensor because it is not reliable enough for
now). Pavel Machek removed few more features and switched locking from
semaphore to mutex.Several people have contributed to the database of the axes.
[eric.piel@tremplin-utc.net: LIS3LV02D: Conform to the new ACPI API]
Signed-off-by: Eric Piel
Signed-off-by: Yan Burman
Signed-off-by: Pavel Machek
Cc: "Mark M. Hoffman"
Signed-off-by: Eric Piel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The start pfn calculation in page_cgroup's memory hotplug notifier chain
is wrong.Tested-by: Badari Pulavarty
Signed-off-by: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: "Theodore Ts'o"
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We're working with an AT91SAM9263 Rev B in our design and I experienced
some inconsistency in spi-based touchscreen usage between our board and
the Atmel evaluation kit we have that runs on a Rev A chip.The data was apparently delayed by 1 byte and got ridiculous data out of
the touchscreen driver, very strange. As everything looked normal in
the spi, touchscreen and dma logs, I contacted the Atmel support and
they triggered me on a new HW bug that appeared in the Rev B SPI
controller.The problem is that the SPI controller on the Rev B needs that the
software reset is performed two times so that it's performed correctly.Applying the patch below solves the issue on my Rev B board. I've tested
it as well on my Rev A evaluation kit and it has apparently no unwanted
side effect, things continue to work as expected.Signed-off-by: Haavard Skinnemoen
Cc: David Brownell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The adt7468 is a follow-on to the adt7463, so plumb in adt7468 support
along the same code paths.Signed-off-by: Darrick J. Wong
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Implement correct range checking for adt7470 to prevent userland from
writing impossible values into the chip, and cap out-of-range values per
standard hwmon conventions.Implement correct rounding of input values per standard hwmon conventions.
Signed-off-by: Darrick J. Wong
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Implement correct range checking for adt7470 to prevent userland from
writing impossible values into the chip, and cap out-of-range values per
standard hwmon conventions.Implement correct rounding of input values per standard hwmon conventions.
Signed-off-by: Darrick J. Wong
Cc: Jean Delvare
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We only need the cacheline padding on SMP kernels. Saves 6k:
text data bss dec hex filename
5713 388 8840 14941 3a5d kernel/kprobes.o
5713 388 2632 8733 221d kernel/kprobes.oAcked-by: Masami Hiramatsu
Cc: Ananth N Mavinakayanahalli
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
xip documentation updated:
- change "get_xip_page" to "get_xip_mem";
- explain changed function parametersSigned-off-by: Marco Stornelli
Signed-off-by: Randy Dunlap
Cc: Carsten Otte
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add printk-formats.txt so that we don't have to keep fixing the
same things over and over again.Signed-off-by: Randy Dunlap
Cc: Alexey Dobriyan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It mistakenly assumes that a static local in an inlined function is a
kernel-wide singleton. It also has no callers, so let's remove it.Cc: Dave Young
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In the last refactoring of shrink_submounts a variable was not completely
renamed. So finish the renaming of mnt to m now.Without this if you attempt to mount an nfs mount that has both automatic
nfs sub mounts on it, and has normal mounts on it. The unmount will
succeed when it should not.Signed-off-by: Eric W. Biederman
Cc: Alexey Dobriyan
Cc: Al Viro
Signed-off-by: Linus Torvalds -
lockdep warns about following message at boot time on one of my test
machine. Then, schedule_on_each_cpu() sholdn't be called when the task
have mmap_sem.Actually, lru_add_drain_all() exist to prevent the unevictalble pages
stay on reclaimable lru list. but currenct unevictable code can rescue
unevictable pages although it stay on reclaimable list.So removing is better.
In addition, this patch add lru_add_drain_all() to sys_mlock() and
sys_mlockall(). it isn't must. but it reduce the failure of moving to
unevictable list. its failure can rescue in vmscan later. but reducing
is better.Note, if above rescuing happend, the Mlocked and the Unevictable field
mismatching happend in /proc/meminfo. but it doesn't cause any real
trouble.=======================================================
[ INFO: possible circular locking dependency detected ]
2.6.28-rc2-mm1 #2
-------------------------------------------------------
lvm/1103 is trying to acquire lock:
(&cpu_hotplug.lock){--..}, at: [] get_online_cpus+0x29/0x50but task is already holding lock:
(&mm->mmap_sem){----}, at: [] sys_mlockall+0x4e/0xb0which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&mm->mmap_sem){----}:
[] check_noncircular+0x82/0x110
[] might_fault+0x4a/0xa0
[] validate_chain+0xb11/0x1070
[] might_fault+0x4a/0xa0
[] __lock_acquire+0x263/0xa10
[] lock_acquire+0x7c/0xb0 (*) grab mmap_sem
[] might_fault+0x4a/0xa0
[] might_fault+0x7b/0xa0
[] might_fault+0x4a/0xa0
[] copy_to_user+0x30/0x60
[] filldir+0x7c/0xd0
[] sysfs_readdir+0x11a/0x1f0 (*) grab sysfs_mutex
[] filldir+0x0/0xd0
[] filldir+0x0/0xd0
[] vfs_readdir+0x86/0xa0 (*) grab i_mutex
[] sys_getdents+0x6b/0xc0
[] syscall_call+0x7/0xb
[] 0xffffffff-> #2 (sysfs_mutex){--..}:
[] check_noncircular+0x82/0x110
[] sysfs_addrm_start+0x2c/0xc0
[] validate_chain+0xb11/0x1070
[] sysfs_addrm_start+0x2c/0xc0
[] __lock_acquire+0x263/0xa10
[] lock_acquire+0x7c/0xb0 (*) grab sysfs_mutex
[] sysfs_addrm_start+0x2c/0xc0
[] mutex_lock_nested+0xa5/0x2f0
[] sysfs_addrm_start+0x2c/0xc0
[] sysfs_addrm_start+0x2c/0xc0
[] sysfs_addrm_start+0x2c/0xc0
[] create_dir+0x3f/0x90
[] sysfs_create_dir+0x29/0x50
[] _spin_unlock+0x25/0x40
[] kobject_add_internal+0xcd/0x1a0
[] kobject_set_name_vargs+0x3a/0x50
[] kobject_init_and_add+0x2d/0x40
[] sysfs_slab_add+0xd2/0x180
[] sysfs_add_func+0x0/0x70
[] sysfs_add_func+0x5c/0x70 (*) grab slub_lock
[] run_workqueue+0x172/0x200
[] run_workqueue+0x10f/0x200
[] worker_thread+0x0/0xf0
[] worker_thread+0x9c/0xf0
[] autoremove_wake_function+0x0/0x50
[] worker_thread+0x0/0xf0
[] kthread+0x42/0x70
[] kthread+0x0/0x70
[] kernel_thread_helper+0x7/0x1c
[] 0xffffffff-> #1 (slub_lock){----}:
[] check_noncircular+0xd/0x110
[] slab_cpuup_callback+0x11f/0x1d0
[] validate_chain+0xb11/0x1070
[] slab_cpuup_callback+0x11f/0x1d0
[] mark_lock+0x35d/0xd00
[] __lock_acquire+0x263/0xa10
[] lock_acquire+0x7c/0xb0
[] slab_cpuup_callback+0x11f/0x1d0
[] down_read+0x43/0x80
[] slab_cpuup_callback+0x11f/0x1d0 (*) grab slub_lock
[] slab_cpuup_callback+0x11f/0x1d0
[] notifier_call_chain+0x3c/0x70
[] _cpu_up+0x84/0x110
[] cpu_up+0x4b/0x70 (*) grab cpu_hotplug.lock
[] kernel_init+0x0/0x170
[] kernel_init+0xb5/0x170
[] kernel_init+0x0/0x170
[] kernel_thread_helper+0x7/0x1c
[] 0xffffffff-> #0 (&cpu_hotplug.lock){--..}:
[] validate_chain+0x5af/0x1070
[] dev_status+0x0/0x50
[] __lock_acquire+0x263/0xa10
[] lock_acquire+0x7c/0xb0
[] get_online_cpus+0x29/0x50
[] mutex_lock_nested+0xa5/0x2f0
[] get_online_cpus+0x29/0x50
[] get_online_cpus+0x29/0x50
[] lru_add_drain_per_cpu+0x0/0x10
[] get_online_cpus+0x29/0x50 (*) grab cpu_hotplug.lock
[] schedule_on_each_cpu+0x32/0xe0
[] __mlock_vma_pages_range+0x85/0x2c0
[] __lock_acquire+0x285/0xa10
[] vma_merge+0xa9/0x1d0
[] mlock_fixup+0x180/0x200
[] do_mlockall+0x78/0x90 (*) grab mmap_sem
[] sys_mlockall+0x81/0xb0
[] syscall_call+0x7/0xb
[] 0xffffffffother info that might help us debug this:
1 lock held by lvm/1103:
#0: (&mm->mmap_sem){----}, at: [] sys_mlockall+0x4e/0xb0stack backtrace:
Pid: 1103, comm: lvm Not tainted 2.6.28-rc2-mm1 #2
Call Trace:
[] print_circular_bug_tail+0x7c/0xd0
[] validate_chain+0x5af/0x1070
[] dev_status+0x0/0x50
[] __lock_acquire+0x263/0xa10
[] lock_acquire+0x7c/0xb0
[] get_online_cpus+0x29/0x50
[] mutex_lock_nested+0xa5/0x2f0
[] get_online_cpus+0x29/0x50
[] get_online_cpus+0x29/0x50
[] lru_add_drain_per_cpu+0x0/0x10
[] get_online_cpus+0x29/0x50
[] schedule_on_each_cpu+0x32/0xe0
[] __mlock_vma_pages_range+0x85/0x2c0
[] __lock_acquire+0x285/0xa10
[] vma_merge+0xa9/0x1d0
[] mlock_fixup+0x180/0x200
[] do_mlockall+0x78/0x90
[] sys_mlockall+0x81/0xb0
[] syscall_call+0x7/0xbSigned-off-by: KOSAKI Motohiro
Tested-by: Kamalesh Babulal
Cc: Lee Schermerhorn
Cc: Christoph Lameter
Cc: Heiko Carstens
Cc: Nick Piggin
Cc: Hugh Dickins
Cc: Rik van Riel
Cc: Peter Zijlstra
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
__register_kprobe() can be preempted after checking probing address but
before module_text_address() or try_module_get(), and in this interval
the module can be unloaded. In that case, try_module_get(probed_mod)
will access to invalid address, or kprobe will probe invalid address.This patch uses preempt_disable() to protect it and uses
__module_text_address() and __kernel_text_address().Signed-off-by: Lai Jiangshan
Signed-off-by: Masami Hiramatsu
Cc: Ananth N Mavinakayanahalli
Cc: Hiroshi Shimamoto
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With this change, control file 'freezer.state' doesn't exist in root
cgroup, making root cgroup unfreezable.I think it's reasonable to disallow freeze tasks in the root cgroup. And
then we can avoid fork overhead when freezer subsystem is compiled but not
used.Also make writing invalid value to freezer.state returns EINVAL rather
than EIO. This is more consistent with other cgroup subsystem.Signed-off-by: Li Zefan
Acked-by: Paul Menage
Cc: Cedric Le Goater
Cc: Paul Menage
Cc: Matt Helsley
Cc: "Serge E. Hallyn"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
