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Maxim Uvarov b663a79c19 taskstats: add context-switch counters 
Make available to the user the following task and process performance
statistics:

	* Involuntary Context Switches (task_struct->nivcsw)
	* Voluntary Context Switches (task_struct->nvcsw)

Statistics information is available from:
	1. taskstats interface (Documentation/accounting/)
	2. /proc/PID/status (task only).

This data is useful for detecting hyperactivity patterns between processes.

[akpm@linux-foundation.org: cleanup]
Signed-off-by: Maxim Uvarov <muvarov@ru.mvista.com>
Cc: Shailabh Nagar <nagar@watson.ibm.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Jay Lan <jlan@engr.sgi.com>
Cc: Jonathan Lim <jlim@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-16 09:05:46 -07:00
..
9p
9p: re-enable mount time debug option
2007-07-14 15:14:14 -05:00
adfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
affs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
afs
AFS: drop explicit extern
2007-07-16 09:05:43 -07:00
autofs
Replace pid_t in autofs with struct pid reference
2007-05-11 08:29:36 -07:00
autofs4
Fix some coding-style errors in autofs
2007-05-11 08:29:36 -07:00
befs
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
bfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
cifs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
coda
wrong order of arguments of ->readdir()
2007-07-15 16:40:51 -07:00
configfs
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
cramfs
mm: make read_cache_page synchronous
2007-05-07 12:12:51 -07:00
debugfs
debugfs: add rename for debugfs files
2007-07-11 16:09:00 -07:00
devpts
devpts: add fsnotify create event
2007-05-08 11:14:59 -07:00
dlm
[DLM] dump more lock values
2007-07-09 08:24:13 +01:00
ecryptfs
sysfs: kill unnecessary attribute->owner
2007-07-11 16:09:06 -07:00
efs
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
exportfs
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
ext2
ext2: fix a comment when ext2_release_file() is called
2007-07-16 09:05:44 -07:00
ext3
ext3/ext4: orphan list corruption due bad inode
2007-07-16 09:05:46 -07:00
ext4
ext3/ext4: orphan list corruption due bad inode
2007-07-16 09:05:46 -07:00
fat
fat: gcc 4.3 warning fix
2007-07-16 09:05:42 -07:00
freevxfs
vxfs warning fixes
2007-07-16 09:05:41 -07:00
fuse
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
gfs2
Remove capability.h from mm.h
2007-07-16 09:05:45 -07:00
hfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
hfsplus
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
hostfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
hpfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
hppfs
…
hugetlbfs
shm: fix the filename of hugetlb sysv shared memory
2007-06-16 13:16:16 -07:00
isofs
remove useless tolower in isofs
2007-07-16 09:05:43 -07:00
jbd
jbd commit: fix transaction dropping
2007-07-16 09:05:34 -07:00
jbd2
jbd2 commit: fix transaction dropping
2007-07-16 09:05:34 -07:00
jffs2
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
jfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
lockd
NLM: fix source address of callback to client
2007-07-10 23:40:49 -04:00
minix
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
msdos
…
ncpfs
Only send SIGXFSZ when exceeding rlimits.
2007-07-16 09:05:43 -07:00
nfs
Make NFS client use seq_list_xxx helpers
2007-07-16 09:05:42 -07:00
nfs_common
…
nfsd
Merge git://git.linux-nfs.org/pub/linux/nfs-2.6
2007-07-13 16:46:18 -07:00
nls
…
ntfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
ocfs2
sysfs: kill unnecessary attribute->owner
2007-07-11 16:09:06 -07:00
openpromfs
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
partitions
fix compiler warnings in acorn.c
2007-07-16 09:05:42 -07:00
proc
taskstats: add context-switch counters
2007-07-16 09:05:46 -07:00
qnx4
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
ramfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
reiserfs
Only send SIGXFSZ when exceeding rlimits.
2007-07-16 09:05:43 -07:00
romfs
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
smbfs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
sysfs
sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes
2007-07-11 16:09:09 -07:00
sysv
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
udf
UDF: check for allocated memory for inode data
2007-07-16 09:05:41 -07:00
ufs
sendfile: remove .sendfile from filesystems that use generic_file_sendfile()
2007-07-10 08:04:13 +02:00
vfat
…
xfs
[XFS] Fix lockdep annotations for xfs_lock_inodes
2007-07-14 18:09:42 +10:00
aio.c
signal/timer/event: KAIO eventfd support example
2007-05-11 08:29:37 -07:00
anon_inodes.c
signal/timer/event fds: anonymous inode source
2007-05-11 08:29:36 -07:00
attr.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
bad_inode.c
sendfile: remove bad_sendfile() from bad_file_ops
2007-07-10 08:04:15 +02:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
binfmt_elf.c
PIE randomization
2007-07-16 09:05:42 -07:00
binfmt_em86.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
binfmt_flat.c
nommu: report correct errno in message
2007-06-08 17:23:32 -07:00
binfmt_misc.c
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
binfmt_script.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
binfmt_som.c
…
bio.c
unexport bio_{,un}map_user
2007-07-10 08:03:34 +02:00
block_dev.c
fs/block_dev.c: use list_for_each_entry()
2007-07-16 09:05:45 -07:00
buffer.c
buffer: kill old incorrect comment
2007-07-16 09:05:45 -07:00
char_dev.c
…
compat_ioctl.c
fix compat console unimap regression
2007-05-25 17:37:46 -07:00
compat.c
optimize compat_core_sys_select() by a using stack space for small fd sets
2007-05-23 20:14:12 -07:00
dcache.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
dcookies.c
…
direct-io.c
dio: remove bogus refcounting BUG_ON
2007-07-03 18:23:23 -07:00
dnotify.c
…
dquot.c
circular locking dependency found in QUOTA OFF
2007-05-17 05:23:05 -07:00
drop_caches.c
invalidate_mapping_pages(): add cond_resched
2007-07-16 09:05:36 -07:00
eventfd.c
eventfd use waitqueue lock ...
2007-05-18 13:09:34 -07:00
eventpoll.c
epoll: move kfree inside ep_free
2007-05-15 08:54:00 -07:00
exec.c
uselib: add missing MNT_NOEXEC check
2007-05-23 20:14:13 -07:00
fcntl.c
…
fifo.c
Detach sched.h from mm.h
2007-05-21 09:18:19 -07:00
file_table.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
file.c
…
filesystems.c
add filesystem subtype support
2007-05-08 11:15:01 -07:00
fs-writeback.c
…
generic_acl.c
…
inode.c
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
inotify_user.c
…
inotify.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
internal.h
cleanup compat ioctl handling
2007-05-08 11:15:09 -07:00
ioctl.c
vanishing ioctl handler debugging
2007-06-04 13:25:10 -07:00
ioprio.c
…
Kconfig
9p: Reorganization of 9p file system code
2007-07-14 15:13:40 -05:00
Kconfig.binfmt
fs: Kill sh dependency for binfmt_flat.
2007-05-21 14:34:00 +09:00
libfs.c
fs/libfs.c: >80 columns line break fix
2007-05-09 06:44:57 +02:00
locks.c
Remove SLAB_CTOR_CONSTRUCTOR
2007-05-17 05:23:04 -07:00
Makefile
signal/timer/event: eventfd core
2007-05-11 08:29:36 -07:00
mbcache.c
…
mpage.c
consolidate generic_writepages and mpage_writepages
2007-05-11 08:29:35 -07:00
namei.c
[PATCH] complete message queue auditing
2007-05-11 05:38:26 -04:00
namespace.c
Make /proc/self/mounts(tats) use seq_list_xxx helpers
2007-07-16 09:05:42 -07:00
nfsctl.c
…
no-block.c
…
open.c
O_CLOEXEC for SCM_RIGHTS
2007-07-16 09:05:45 -07:00
pipe.c
pipe: add documentation and comments
2007-07-10 08:04:16 +02:00
pnode.c
Introduce a handy list_first_entry macro
2007-05-08 11:15:11 -07:00
pnode.h
…
posix_acl.c
…
quota_v1.c
…
quota_v2.c
…
quota.c
circular locking dependency found in QUOTA OFF
2007-05-17 05:23:05 -07:00
read_write.c
Remove remnants of sendfile()
2007-07-10 08:04:15 +02:00
read_write.h
…
readdir.c
ROUND_UP macro cleanup in fs/(select|compat|readdir).c
2007-05-08 11:15:09 -07:00
select.c
Style fix in fs/select.c
2007-05-09 07:10:02 +02:00
seq_file.c
seq_file: more atomicity in traverse()
2007-07-16 09:05:45 -07:00
signalfd.c
avoid spurious POLLIN returns in signalfd
2007-06-28 11:34:54 -07:00
splice.c
splice: fix offset mangling with direct splicing (sendfile)
2007-07-13 14:14:31 +02:00
stack.c
…
stat.c
header cleaning: don't include smp_lock.h when not used
2007-05-08 11:15:07 -07:00
super.c
add filesystem subtype support
2007-05-08 11:15:01 -07:00
sync.c
Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM
2007-06-28 11:38:30 -07:00
timerfd.c
timerfd use waitqueue lock ...
2007-05-18 13:09:34 -07:00
utimes.c
Fix permission checking for the new utimensat() system call
2007-07-08 12:02:55 -07:00
xattr_acl.c
…
xattr.c
[PATCH] audit inode for all xattr syscalls
2007-05-11 05:38:26 -04:00