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msm-4.14/fs
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KAMEZAWA Hiroyuki 34e55232e5 mm: avoid false sharing of mm_counter 
Considering the nature of per mm stats, it's the shared object among
threads and can be a cache-miss point in the page fault path.

This patch adds per-thread cache for mm_counter.  RSS value will be
counted into a struct in task_struct and synchronized with mm's one at
events.

Now, in this patch, the event is the number of calls to handle_mm_fault.
Per-thread value is added to mm at each 64 calls.

 rough estimation with small benchmark on parallel thread (2threads) shows
 [before]
     4.5 cache-miss/faults
 [after]
     4.0 cache-miss/faults
 Anyway, the most contended object is mmap_sem if the number of threads grows.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Lee Schermerhorn <lee.schermerhorn@hp.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-03-06 11:26:24 -08:00
..
9p
fs/9p: Add hardlink support to .u extension
2010-03-05 15:04:42 -06:00
adfs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
affs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
afs
make sure data is on disk before calling ->write_inode
2010-03-05 13:25:10 -05:00
autofs
…
autofs4
Use kill_litter_super() in autofs4 ->kill_sb()
2010-03-03 14:07:54 -05:00
befs
befs: fix leak
2010-02-07 03:06:21 -05:00
bfs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
btrfs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
cachefiles
CacheFiles: Fix a race in cachefiles_delete_object() vs rename
2010-02-20 10:06:35 -05:00
cifs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2010-03-04 08:15:33 -08:00
coda
sysctl: Drop & in front of every proc_handler.
2009-11-18 08:37:40 -08:00
configfs
Fix configfs leak
2010-01-14 09:05:42 -05:00
cramfs
…
debugfs
Lose the new_name argument of fsnotify_move()
2010-02-08 14:38:36 -05:00
devpts
devpts_get_tty() should validate inode
2009-12-11 15:18:05 -08:00
dlm
dlm: use bastmode in debugfs output
2010-02-26 12:15:54 -06:00
ecryptfs
ecryptfs: use after free
2010-01-19 22:36:06 -06:00
efs
…
exofs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
exportfs
nfs: new subdir Documentation/filesystems/nfs
2009-10-27 19:34:04 -04:00
ext2
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
ext3
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
ext4
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
fat
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
freevxfs
…
fscache
FS-Cache: Avoid maybe-used-uninitialised warning on variable
2009-12-16 07:20:13 -08:00
fuse
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
2010-03-03 08:08:21 -08:00
gfs2
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
hfs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
hfsplus
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
hostfs
…
hpfs
Don't mess with generic_permission() under ->d_lock in hpfs
2010-03-03 14:07:58 -05:00
hppfs
hppfs can use existing proc_mnt, no need for do_kern_mount() in there
2010-03-03 14:08:00 -05:00
hugetlbfs
Untangling ima mess, part 1: alloc_file()
2009-12-16 12:16:47 -05:00
isofs
Merge branch 'for-2.6.33' of git://linux-nfs.org/~bfields/linux
2009-12-16 10:43:34 -08:00
jbd
jbd: Delay discarding buffers in journal_unmap_buffer
2010-03-05 00:20:26 +01:00
jbd2
jbd2: clean up an assertion in jbd2_journal_commit_transaction()
2010-02-24 12:11:20 -05:00
jffs2
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2009-12-16 12:04:02 -08:00
jfs
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
lockd
Merge branch 'for-2.6.33' of git://linux-nfs.org/~bfields/linux
2009-12-16 10:43:34 -08:00
minix
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
ncpfs
tree-wide: fix assorted typos all over the place
2009-12-04 15:39:55 +01:00
nfs
Merge branch 'writeback-for-2.6.34' into nfs-for-2.6.34
2010-03-05 15:46:18 -05:00
nfs_common
…
nfsd
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
nilfs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
2010-03-04 08:15:33 -08:00
nls
Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6
2009-09-30 09:31:14 -07:00
notify
switch inotify_user to anon_inode
2010-02-19 03:35:12 -05:00
ntfs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
ocfs2
bitops: rename for_each_bit() to for_each_set_bit()
2010-03-06 11:26:23 -08:00
omfs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
openpromfs
…
partitions
block: Stop using byte offsets
2010-01-11 14:30:09 +01:00
proc
mm: clean up mm_counter
2010-03-06 11:26:23 -08:00
qnx4
qnx4: use hweight8
2009-12-16 07:20:18 -08:00
quota
quota: stop using QUOTA_OK / NO_QUOTA
2010-03-05 00:20:31 +01:00
ramfs
nommu: fix shared mmap after truncate shrinkage problems
2010-01-16 12:15:40 -08:00
reiserfs
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
romfs
fix leak in romfs_fill_super()
2010-01-26 22:22:26 -05:00
smbfs
fs: Make unload_nls() NULL pointer safe
2009-09-24 07:47:42 -04:00
squashfs
Squashfs: get rid of obsolete definition in header file
2010-03-05 15:35:35 +00:00
sysfs
sysfs: sysfs_sd_setattr set iattrs unconditionally
2010-02-16 15:42:42 -08:00
sysv
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
ubifs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
udf
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
ufs
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
xfs
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
aio.c
aio: remove unused field
2009-12-16 07:20:13 -08:00
anon_inodes.c
Sanitize f_flags helpers
2009-12-22 12:27:34 -05:00
attr.c
dquot: move dquot transfer responsibility into the filesystem
2010-03-05 00:20:28 +01:00
bad_inode.c
…
binfmt_aout.c
Split 'flush_old_exec' into two functions
2010-01-29 08:22:01 -08:00
binfmt_elf_fdpic.c
Split 'flush_old_exec' into two functions
2010-01-29 08:22:01 -08:00
binfmt_elf.c
Split 'flush_old_exec' into two functions
2010-01-29 08:22:01 -08:00
binfmt_em86.c
…
binfmt_flat.c
Split 'flush_old_exec' into two functions
2010-01-29 08:22:01 -08:00
binfmt_misc.c
…
binfmt_script.c
…
binfmt_som.c
Split 'flush_old_exec' into two functions
2010-01-29 08:22:01 -08:00
bio-integrity.c
block: fix bugs in bio-integrity mempool usage
2010-01-30 20:28:19 +01:00
bio.c
Revert "blkdev: fix merge_bvec_fn return value checks"
2010-03-02 19:17:34 +01:00
block_dev.c
freeze_bdev: don't deactivate successfully frozen MS_RDONLY sb
2010-02-07 03:06:21 -05:00
buffer.c
Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block
2009-09-25 09:27:30 -07:00
char_dev.c
fs/char_dev.c: remove useless loop
2009-09-24 07:21:03 -07:00
compat_binfmt_elf.c
…
compat_ioctl.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
2010-02-11 14:05:55 -08:00
compat.c
compat.c: Remove dependence on nfsd private headers
2009-12-14 18:12:10 -05:00
dcache.c
fix race in d_splice_alias()
2010-03-03 14:13:08 -05:00
dcookies.c
…
direct-io.c
dio: fix use-after-free
2009-12-17 04:52:13 -05:00
drop_caches.c
sysctl: remove "struct file *" argument of ->proc_handler
2009-09-24 07:21:04 -07:00
eventfd.c
eventfd - allow atomic read and waitqueue remove
2010-01-25 12:26:38 -02:00
eventpoll.c
anonfd: Allow making anon files read-only
2009-12-22 12:27:34 -05:00
exec.c
mm: avoid false sharing of mm_counter
2010-03-06 11:26:24 -08:00
fcntl.c
Fix race in tty_fasync() properly
2010-02-07 10:26:01 -08:00
fifo.c
…
file_table.c
Take ima_file_free() to proper place.
2010-02-07 03:07:29 -05:00
file.c
vfs: Apply lockdep-based checking to rcu_dereference() uses
2010-02-25 10:34:48 +01:00
filesystems.c
…
fs_struct.c
…
fs-writeback.c
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
generic_acl.c
make generic_acl slightly more generic
2009-12-16 12:16:49 -05:00
inode.c
dquot: move dquot initialization responsibility into the filesystem
2010-03-05 00:20:30 +01:00
internal.h
Take vfsmount_lock to fs/internal.h
2010-03-03 14:07:59 -05:00
ioctl.c
__generic_block_fiemap(): fix for files bigger than 4GB
2009-11-12 07:26:01 -08:00
ioprio.c
…
Kconfig
Revert "task_struct: make journal_info conditional"
2009-12-17 13:23:24 -08:00
Kconfig.binfmt
…
libfs.c
libfs: Unexport and kill simple_prepare_write
2010-03-03 13:00:17 -05:00
locks.c
Switch may_open() and break_lease() to passing O_...
2010-03-03 13:00:21 -05:00
Makefile
…
mbcache.c
…
mpage.c
…
namei.c
Fix a dumb typo - use of & instead of &&
2010-03-06 10:54:48 -08:00
namespace.c
vfs: add NOFOLLOW flag to umount(2)
2010-03-03 14:08:00 -05:00
nfsctl.c
Switch may_open() and break_lease() to passing O_...
2010-03-03 13:00:21 -05:00
no-block.c
…
open.c
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6
2010-03-05 13:20:53 -08:00
pipe.c
fs: no games with DCACHE_UNHASHED
2009-12-17 10:51:40 -05:00
pnode.c
Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source()
2010-03-03 13:00:22 -05:00
pnode.h
VFS: Clean up shared mount flag propagation
2010-03-03 14:07:55 -05:00
posix_acl.c
…
read_write.c
sendfile(): check f_op.splice_write() rather than f_op.sendpage()
2009-11-04 09:09:52 +01:00
read_write.h
…
readdir.c
…
select.c
headers: remove sched.h from poll.h
2009-10-04 15:05:10 -07:00
seq_file.c
seq_file: add RCU versions of new hlist/list iterators (v3)
2010-02-22 15:45:54 -08:00
signalfd.c
anonfd: Allow making anon files read-only
2009-12-22 12:27:34 -05:00
splice.c
sendfile(): check f_op.splice_write() rather than f_op.sendpage()
2009-11-04 09:09:52 +01:00
stack.c
VFS/fsstack: handle 32-bit smp + preempt + large files in fsstack_copy_inode_size
2009-12-17 10:58:17 -05:00
stat.c
Add unlocked version of inode_add_bytes() function
2009-12-23 13:33:54 +01:00
super.c
Mirror MS_KERNMOUNT in ->mnt_flags
2010-03-03 14:08:00 -05:00
sync.c
quota: move code from sync_quota_sb into vfs_quota_sync
2010-03-05 00:20:24 +01:00
timerfd.c
anonfd: Allow making anon files read-only
2009-12-22 12:27:34 -05:00
utimes.c
…
xattr_acl.c
VFS: Use GFP_NOFS in posix_acl_from_xattr()
2009-12-03 11:48:07 +00:00
xattr.c
sanitize xattr handler prototypes
2009-12-16 12:16:49 -05:00