08 Oct, 2010
1 commit
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When proc_doulongvec_minmax() is used with an array of longs, and no
min/max check requested (.extra1 or .extra2 being NULL), we dereference a
NULL pointer for the second element of the array.Noticed while doing some changes in network stack for the "16TB problem"
Fix is to not change min & max pointers in __do_proc_doulongvec_minmax(),
so that all elements of the vector share an unique min/max limit, like
proc_dointvec_minmax().[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Eric Dumazet
Cc: "Eric W. Biederman"
Cc: Americo Wang
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Sep, 2010
1 commit
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No real bugs I believe, just some dead code.
Signed-off-by: Andi Kleen
Cc: Peter Zijlstra
Cc: andi@firstfloor.org
Signed-off-by: Andrew Morton
Signed-off-by: Ingo Molnar
11 Aug, 2010
1 commit
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* 'for-linus' of git://git.infradead.org/users/eparis/notify: (132 commits)
fanotify: use both marks when possible
fsnotify: pass both the vfsmount mark and inode mark
fsnotify: walk the inode and vfsmount lists simultaneously
fsnotify: rework ignored mark flushing
fsnotify: remove global fsnotify groups lists
fsnotify: remove group->mask
fsnotify: remove the global masks
fsnotify: cleanup should_send_event
fanotify: use the mark in handler functions
audit: use the mark in handler functions
dnotify: use the mark in handler functions
inotify: use the mark in handler functions
fsnotify: send fsnotify_mark to groups in event handling functions
fsnotify: Exchange list heads instead of moving elements
fsnotify: srcu to protect read side of inode and vfsmount locks
fsnotify: use an explicit flag to indicate fsnotify_destroy_mark has been called
fsnotify: use _rcu functions for mark list traversal
fsnotify: place marks on object in order of group memory address
vfs/fsnotify: fsnotify_close can delay the final work in fput
fsnotify: store struct file not struct path
...Fix up trivial delete/modify conflict in fs/notify/inotify/inotify.c.
10 Aug, 2010
1 commit
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The three oom killer sysctl variables (sysctl_oom_dump_tasks,
sysctl_oom_kill_allocating_task, and sysctl_panic_on_oom) are better
declared in include/linux/oom.h rather than kernel/sysctl.c.Signed-off-by: David Rientjes
Acked-by: KOSAKI Motohiro
Cc: KAMEZAWA Hiroyuki
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
08 Aug, 2010
1 commit
-
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (55 commits)
workqueue: mark init_workqueues() as early_initcall()
workqueue: explain for_each_*cwq_cpu() iterators
fscache: fix build on !CONFIG_SYSCTL
slow-work: kill it
gfs2: use workqueue instead of slow-work
drm: use workqueue instead of slow-work
cifs: use workqueue instead of slow-work
fscache: drop references to slow-work
fscache: convert operation to use workqueue instead of slow-work
fscache: convert object to use workqueue instead of slow-work
workqueue: fix how cpu number is stored in work->data
workqueue: fix mayday_mask handling on UP
workqueue: fix build problem on !CONFIG_SMP
workqueue: fix locking in retry path of maybe_create_worker()
async: use workqueue for worker pool
workqueue: remove WQ_SINGLE_CPU and use WQ_UNBOUND instead
workqueue: implement unbound workqueue
workqueue: prepare for WQ_UNBOUND implementation
libata: take advantage of cmwq and remove concurrency limitations
workqueue: fix worker management invocation without pending works
...Fixed up conflicts in fs/cifs/* as per Tejun. Other trivial conflicts in
include/linux/workqueue.h, kernel/trace/Kconfig and kernel/workqueue.c
07 Aug, 2010
1 commit
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (28 commits)
driver core: device_rename's new_name can be const
sysfs: Remove owner field from sysfs struct attribute
powerpc/pci: Remove owner field from attribute initialization in PCI bridge init
regulator: Remove owner field from attribute initialization in regulator core driver
leds: Remove owner field from attribute initialization in bd2802 driver
scsi: Remove owner field from attribute initialization in ARCMSR driver
scsi: Remove owner field from attribute initialization in LPFC driver
cgroupfs: create /sys/fs/cgroup to mount cgroupfs on
Driver core: Add BUS_NOTIFY_BIND_DRIVER
driver core: fix memory leak on one error path in bus_register()
debugfs: no longer needs to depend on SYSFS
sysfs: Fix one more signature discrepancy between sysfs implementation and docs.
sysfs: fix discrepancies between implementation and documentation
dcdbas: remove a redundant smi_data_buf_free in dcdbas_exit
dmi-id: fix a memory leak in dmi_id_init error path
sysfs: sysfs_chmod_file's attr can be const
firmware: Update hotplug script
Driver core: move platform device creation helpers to .init.text (if MODULE=n)
Driver core: reduce duplicated code for platform_device creation
Driver core: use kmemdup in platform_device_add_resources
...
06 Aug, 2010
1 commit
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The kernel/hotplug sysctl variable (/proc/sys/kernel/hotplug file) was
made conditional on CONFIG_NET by commit
f743ca5e10f4145e0b3e6d11b9b46171e16af7ce (applied in 2.6.18) to fix
problems with undefined references in 2.6.16 when CONFIG_HOTPLUG=y &&
!CONFIG_NET, but this restriction is no longer needed.This patch makes the kernel/hotplug sysctl variable depend only on
CONFIG_HOTPLUG.Signed-off-by: Ian Abbott
Acked-by: Randy Dunlap
Signed-off-by: Greg Kroah-Hartman
05 Aug, 2010
1 commit
-
Conflicts:
kernel/MakefileMerge reason: Add the now complete topic, fix the conflict.
Signed-off-by: Ingo Molnar
28 Jul, 2010
2 commits
-
Extern declarations in sysctl.c should be move to their own head file, and
then include them in relavant .c files.Move inotify_table extern declaration to linux/inotify.h
Signed-off-by: Dave Young
Signed-off-by: Andrew Morton
Signed-off-by: Eric Paris -
Move dir_notify_enable declaration to where it belongs -- dnotify.h .
Signed-off-by: Alexey Dobriyan
Signed-off-by: Eric Paris
23 Jul, 2010
1 commit
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slow-work doesn't have any user left. Kill it.
Signed-off-by: Tejun Heo
Acked-by: David Howells
03 Jun, 2010
1 commit
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This changes the interface to be based on bytes instead. The API
matches that of F_SETPIPE_SZ in that it rounds up the passed in
size so that the resulting page array is a power-of-2 in size.The proc file is renamed to /proc/sys/fs/pipe-max-size to
reflect this change.Signed-off-by: Jens Axboe
26 May, 2010
2 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (63 commits)
drivers/net/usb/asix.c: Fix pointer cast.
be2net: Bug fix to avoid disabling bottom half during firmware upgrade.
proc_dointvec: write a single value
hso: add support for new products
Phonet: fix potential use-after-free in pep_sock_close()
ath9k: remove VEOL support for ad-hoc
ath9k: change beacon allocation to prefer the first beacon slot
sock.h: fix kernel-doc warning
cls_cgroup: Fix build error when built-in
macvlan: do proper cleanup in macvlan_common_newlink() V2
be2net: Bug fix in init code in probe
net/dccp: expansion of error code size
ath9k: Fix rx of mcast/bcast frames in PS mode with auto sleep
wireless: fix sta_info.h kernel-doc warnings
wireless: fix mac80211.h kernel-doc warnings
iwlwifi: testing the wrong variable in iwl_add_bssid_station()
ath9k_htc: rare leak in ath9k_hif_usb_alloc_tx_urbs()
ath9k_htc: dereferencing before check in hif_usb_tx_cb()
rt2x00: Fix rt2800usb TX descriptor writing.
rt2x00: Fix failed SLEEP->AWAKE and AWAKE->SLEEP transitions.
... -
The commit 00b7c3395aec3df43de5bd02a3c5a099ca51169f
"sysctl: refactor integer handling proc code"
modified the behaviour of writing to /proc.
Before the commit, write("1\n") to /proc/sys/kernel/printk succeeded. But
now it returns EINVAL.This commit supports writing a single value to a multi-valued entry.
Signed-off-by: J. R. Okajima
Reviewed-and-tested-by: WANG Cong
Signed-off-by: David S. Miller
25 May, 2010
2 commits
-
…hen it should be reclaimed
The kernel applies some heuristics when deciding if memory should be
compacted or reclaimed to satisfy a high-order allocation. One of these
is based on the fragmentation. If the index is below 500, memory will not
be compacted. This choice is arbitrary and not based on data. To help
optimise the system and set a sensible default for this value, this patch
adds a sysctl extfrag_threshold. The kernel will only compact memory if
the fragmentation index is above the extfrag_threshold.[randy.dunlap@oracle.com: Fix build errors when proc fs is not configured]
Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> -
Add a proc file /proc/sys/vm/compact_memory. When an arbitrary value is
written to the file, all zones are compacted. The expected user of such a
trigger is a job scheduler that prepares the system before the target
application runs.Signed-off-by: Mel Gorman
Acked-by: Rik van Riel
Reviewed-by: KAMEZAWA Hiroyuki
Reviewed-by: Minchan Kim
Reviewed-by: KOSAKI Motohiro
Reviewed-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
22 May, 2010
4 commits
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* 'for-2.6.35' of git://git.kernel.dk/linux-2.6-block: (86 commits)
pipe: set lower and upper limit on max pages in the pipe page array
pipe: add support for shrinking and growing pipes
drbd: This is now equivalent to drbd release 8.3.8rc1
drbd: Do not free p_uuid early, this is done in the exit code of the receiver
drbd: Null pointer deref fix to the large "multi bio rewrite"
drbd: Fix: Do not detach, if a bio with a barrier fails
drbd: Ensure to not trigger late-new-UUID creation multiple times
drbd: Do not Oops when C_STANDALONE when uuid gets generated
writeback: fix mixed up arguments to bdi_start_writeback()
writeback: fix problem with !CONFIG_BLOCK compilation
block: improve automatic native capacity unlocking
block: use struct parsed_partitions *state universally in partition check code
block,ide: simplify bdops->set_capacity() to ->unlock_native_capacity()
block: restart partition scan after resizing a device
buffer: make invalidate_bdev() drain all percpu LRU add caches
block: remove all rcu head initializations
writeback: fixups for !dirty_writeback_centisecs
writeback: bdi_writeback_task() must set task state before calling schedule()
writeback: ensure that WB_SYNC_NONE writeback with sb pinned is sync
drivers/block/drbd: Use kzalloc
... -
Fix kernel-doc warnings, kernel-doc special characters, and
typos in recent kernel/sysctl.c additions.Signed-off-by: Randy Dunlap
Cc: Amerigo Wang
Signed-off-by: Linus Torvalds -
Conflicts:
fs/ext3/fsync.cSigned-off-by: Jens Axboe
-
We need at least two to guarantee proper POSIX behaviour, so
never allow a smaller limit than that.Also expose a /proc/sys/fs/pipe-max-pages sysctl file that allows
root to define a sane upper limit. Make it default to 16 times the
default size, which is 16 pages.Signed-off-by: Jens Axboe
21 May, 2010
2 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1674 commits)
qlcnic: adding co maintainer
ixgbe: add support for active DA cables
ixgbe: dcb, do not tag tc_prio_control frames
ixgbe: fix ixgbe_tx_is_paused logic
ixgbe: always enable vlan strip/insert when DCB is enabled
ixgbe: remove some redundant code in setting FCoE FIP filter
ixgbe: fix wrong offset to fc_frame_header in ixgbe_fcoe_ddp
ixgbe: fix header len when unsplit packet overflows to data buffer
ipv6: Never schedule DAD timer on dead address
ipv6: Use POSTDAD state
ipv6: Use state_lock to protect ifa state
ipv6: Replace inet6_ifaddr->dead with state
cxgb4: notify upper drivers if the device is already up when they load
cxgb4: keep interrupts available when the ports are brought down
cxgb4: fix initial addition of MAC address
cnic: Return SPQ credit to bnx2x after ring setup and shutdown.
cnic: Convert cnic_local_flags to atomic ops.
can: Fix SJA1000 command register writes on SMP systems
bridge: fix build for CONFIG_SYSFS disabled
ARCNET: Limit com20020 PCI ID matches for SOHARD cards
...Fix up various conflicts with pcmcia tree drivers/net/
{pcmcia/3c589_cs.c, wireless/orinoco/orinoco_cs.c and
wireless/orinoco/spectrum_cs.c} and feature removal
(Documentation/feature-removal-schedule.txt).Also fix a non-content conflict due to pm_qos_requirement getting
renamed in the PM tree (now pm_qos_request) in net/mac80211/scan.c -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (40 commits)
Input: psmouse - small formatting changes to better follow coding style
Input: synaptics - set dimensions as reported by firmware
Input: elantech - relax signature checks
Input: elantech - enforce common prefix on messages
Input: wistron_btns - switch to using kmemdup()
Input: usbtouchscreen - switch to using kmemdup()
Input: do not force selecting i8042 on Moorestown
Input: Documentation/sysrq.txt - update KEY_SYSRQ info
Input: 88pm860x_onkey - remove invalid irq number assignment
Input: i8042 - add a PNP entry to the aux device list
Input: i8042 - add some extra PNP keyboard types
Input: wm9712 - fix wm97xx_set_gpio() logic
Input: add keypad driver for keys interfaced to TCA6416
Input: remove obsolete {corgi,spitz,tosa}kbd.c
Input: kbtab - do not advertise unsupported events
Input: kbtab - simplify kbtab_disconnect()
Input: kbtab - fix incorrect size parameter in usb_buffer_free
Input: acecad - don't advertise mouse events
Input: acecad - fix some formatting issues
Input: acecad - simplify usb_acecad_disconnect()
...Trivial conflict in Documentation/feature-removal-schedule.txt
17 May, 2010
1 commit
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The exception-trace facility on x86 and other architectures prints
traces to dmesg whenever a user space application crashes.
s390 has such a feature since ages however it is called
userprocess_debug and is enabled differently.
This patch makes sure that whenever one of the two procfs files/proc/sys/kernel/userprocess_debug
/proc/sys/debug/exception-traceis modified the contents of the second one changes as well.
That way we keep backwards compatibilty but also support the same
interface like other architectures do.
Besides that the output of the traces is improved since it will now
also contain the corresponding filename of the vma (when available)
where the process caused a fault or trap.Signed-off-by: Heiko Carstens
Signed-off-by: Martin Schwidefsky
16 May, 2010
2 commits
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The new function can be used to read/write large bitmaps via /proc. A
comma separated range format is used for compact output and input
(e.g. 1,3-4,10-10).Writing into the file will first reset the bitmap then update it
based on the given input.Signed-off-by: Octavian Purdila
Signed-off-by: WANG Cong
Cc: Eric W. Biederman
Signed-off-by: David S. Miller -
(Based on Octavian's work, and I modified a lot.)
As we are about to add another integer handling proc function a little
bit of cleanup is in order: add a few helper functions to improve code
readability and decrease code duplication.In the process a bug is also fixed: if the user specifies a number
with more then 20 digits it will be interpreted as two integers
(e.g. 10000...13 will be interpreted as 100.... and 13).Behavior for EFAULT handling was changed as well. Previous to this
patch, when an EFAULT error occurred in the middle of a write
operation, although some of the elements were set, that was not
acknowledged to the user (by shorting the write and returning the
number of bytes accepted). EFAULT is now treated just like any other
errors by acknowledging the amount of bytes accepted.Signed-off-by: Octavian Purdila
Signed-off-by: WANG Cong
Cc: Eric W. Biederman
Signed-off-by: David S. Miller
13 May, 2010
4 commits
-
Now that is no longer compiled or used, just remove it.
Also move some of the code wrapped with DETECT_SOFTLOCKUP to the
LOCKUP_DETECTOR wrappers because that is the code that uses it now.Signed-off-by: Don Zickus
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Cyrill Gorcunov
Cc: Eric Paris
Cc: Randy Dunlap
LKML-Reference:
Signed-off-by: Frederic Weisbecker -
Just some code cleanup to make touch_softlockup clearer and remove the
softlockup_tick function as it is no longer needed.Also remove the /proc softlockup_thres call as it has been changed to
watchdog_thres.Signed-off-by: Don Zickus
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Cyrill Gorcunov
Cc: Eric Paris
Cc: Randy Dunlap
LKML-Reference:
Signed-off-by: Frederic Weisbecker -
The new nmi_watchdog (which uses the perf event subsystem) is very
similar in structure to the softlockup detector. Using Ingo's
suggestion, I combined the two functionalities into one file:
kernel/watchdog.c.Now both the nmi_watchdog (or hardlockup detector) and softlockup
detector sit on top of the perf event subsystem, which is run every
60 seconds or so to see if there are any lockups.To detect hardlockups, cpus not responding to interrupts, I
implemented an hrtimer that runs 5 times for every perf event
overflow event. If that stops counting on a cpu, then the cpu is
most likely in trouble.To detect softlockups, tasks not yielding to the scheduler, I used the
previous kthread idea that now gets kicked every time the hrtimer fires.
If the kthread isn't being scheduled neither is anyone else and the
warning is printed to the console.I tested this on x86_64 and both the softlockup and hardlockup paths
work.V2:
- cleaned up the Kconfig and softlockup combination
- surrounded hardlockup cases with #ifdef CONFIG_PERF_EVENTS_NMI
- seperated out the softlockup case from perf event subsystem
- re-arranged the enabling/disabling nmi watchdog from proc space
- added cpumasks for hardlockup failure cases
- removed fallback to soft events if no PMU exists for hard eventsV3:
- comment cleanups
- drop support for older softlockup code
- per_cpu cleanups
- completely remove software clock base hardlockup detector
- use per_cpu masking on hard/soft lockup detection
- #ifdef cleanups
- rename config option NMI_WATCHDOG to LOCKUP_DETECTOR
- documentation additionsV4:
- documentation fixes
- convert per_cpu to __get_cpu_var
- powerpc compile fixesV5:
- split apart warn flags for hard and soft lockupsTODO:
- figure out how to make an arch-agnostic clock2cycles call
(if possible) to feed into perf events as a sample period[fweisbec: merged conflict patch]
Signed-off-by: Don Zickus
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Cyrill Gorcunov
Cc: Eric Paris
Cc: Randy Dunlap
LKML-Reference:
Signed-off-by: Frederic Weisbecker -
Merge reason: catch up with latest softlockup detector changes.
14 Apr, 2010
1 commit
-
Instead of keeping SysRq support inside of legacy keyboard driver split
it out into a separate input handler (filter). This stops most SysRq input
events from leaking into evdev clients (some events, such as first SysRq
scancode - not keycode - event, are still leaked into both legacy keyboard
and evdev).[martinez.javier@gmail.com: fix compile error when CONFIG_MAGIC_SYSRQ is
not defined]
Signed-off-by: Dmitry Torokhov
13 Mar, 2010
8 commits
-
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move lockdep extern declarations to linux/lockdep.h
Signed-off-by: Dave Young
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move max_lock_depth extern declaration to linux/rtmutex.h
Signed-off-by: Dave Young
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move acct_parm extern declaration to linux/acct.h
Signed-off-by: Dave Young
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move sg_big_buff extern declaration to scsi/sg.h
Signed-off-by: Dave Young
Acked-by: Doug Gilbert
Cc: James Bottomley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move modprobe_path extern declaration to linux/kmod.h
Move modules_disabled extern declaration to linux/module.hSigned-off-by: Dave Young
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move rcutorture_runnable extern declaration to linux/rcupdate.h
Signed-off-by: Dave Young
Acked-by: Josh Triplett
Reviewed-by: "Paul E. McKenney"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move print_fatal_signals extern declaration to linux/signal.h
Signed-off-by: Dave Young
Cc: Oleg Nesterov
Cc: Roland McGrath
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Extern declarations in sysctl.c should be moved to their own header file,
and then include them in relavant .c files.Move C_A_D extern variable declaration to linux/reboot.h
Signed-off-by: Dave Young
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
06 Mar, 2010
1 commit
-
…nel/git/tip/linux-2.6-tip
* 'perf-probes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: Issue at least one memory barrier in stop_machine_text_poke()
perf probe: Correct probe syntax on command line help
perf probe: Add lazy line matching support
perf probe: Show more lines after last line
perf probe: Check function address range strictly in line finder
perf probe: Use libdw callback routines
perf probe: Use elfutils-libdw for analyzing debuginfo
perf probe: Rename probe finder functions
perf probe: Fix bugs in line range finder
perf probe: Update perf probe document
perf probe: Do not show --line option without dwarf support
kprobes: Add documents of jump optimization
kprobes/x86: Support kprobes jump optimization on x86
x86: Add text_poke_smp for SMP cross modifying code
kprobes/x86: Cleanup save/restore registers
kprobes/x86: Boost probes when reentering
kprobes: Jump optimization sysctl interface
kprobes: Introduce kprobes jump optimization
kprobes: Introduce generic insn_slot framework
kprobes/x86: Cleanup RELATIVEJUMP_INSTRUCTION to RELATIVEJUMP_OPCODE
01 Mar, 2010
1 commit
-
Just faults right now, will add other traps later.
Signed-off-by: David S. Miller
