Naoya Horiguchi 025c5b2451 thp: optimize away unnecessary page table locking ... Currently when we check if we can handle thp as it is or we need to split it into regular sized pages, we hold page table lock prior to check whether a given pmd is mapping thp or not. Because of this, when it's not "huge pmd" we suffer from unnecessary lock/unlock overhead. To remove it, this patch introduces a optimized check function and replace several similar logics with it. [akpm@linux-foundation.org: checkpatch fixes] Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: David Rientjes <rientjes@google.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-03-21 17:54:57 -07:00
..
array.c	Merge branch 'for-linus' of git://selinuxproject.org/~jmorris/linux-security	2012-01-14 18:36:33 -08:00
base.c	sched: Clean up parameter passing of proc_sched_autogroup_set_nice()	2012-03-02 12:23:49 +01:00
cmdline.c
consoles.c	console: rename acquire/release_console_sem() to console_lock/unlock()	2011-01-26 10:50:06 +10:00
cpuinfo.c
devices.c	proc: use seq_puts()/seq_putc() where possible	2011-01-13 08:03:16 -08:00
generic.c	switch procfs to umode_t use	2012-01-03 22:54:56 -05:00
inode.c	procfs: add hidepid= and gid= mount options	2012-01-10 16:30:54 -08:00
internal.h	procfs: parse mount options	2012-01-10 16:30:54 -08:00
interrupts.c
Kconfig	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
kcore.c	kcore: fix spelling in read_kcore() comment	2012-03-20 12:24:10 +01:00
kmsg.c	procfs: Use generic_file_llseek in /proc/kmsg	2010-04-09 16:35:41 +02:00
loadavg.c	sched, timers: cleanup avenrun users	2009-05-15 15:32:45 +02:00
Makefile	ns: proc files for namespace naming policy.	2011-05-10 14:31:44 -07:00
meminfo.c	fs/proc/meminfo.c: fix compilation error	2011-12-09 07:50:28 -08:00
mmu.c
namespaces.c	vfs: trim includes a bit	2012-01-03 22:57:13 -05:00
nommu.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
page.c	thp: remove PG_buddy	2011-01-13 17:32:43 -08:00
proc_devtree.c	of/flattree: Drop an uninteresting message to pr_debug level	2011-03-02 13:45:18 -07:00
proc_net.c	switch procfs to umode_t use	2012-01-03 22:54:56 -05:00
proc_sysctl.c	Merge branch 'akpm' (Andrew's incoming - part two)	2011-11-02 16:07:27 -07:00
proc_tty.c	proc: use seq_puts()/seq_putc() where possible	2011-01-13 08:03:16 -08:00
root.c	procfs: add hidepid= and gid= mount options	2012-01-10 16:30:54 -08:00
softirqs.c	proc: use seq_puts()/seq_putc() where possible	2011-01-13 08:03:16 -08:00
stat.c	sched/accounting, proc: Fix /proc/stat interrupts sum	2012-01-16 08:13:27 +01:00
task_mmu.c	thp: optimize away unnecessary page table locking	2012-03-21 17:54:57 -07:00
task_nommu.c	report errors in /proc/*/*map* sanely	2011-03-23 16:36:50 -04:00
uptime.c	Merge branch 'sched/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into cputime-tip	2011-12-19 19:23:15 +01:00
version.c
vmcore.c	fs: add export.h to files using EXPORT_SYMBOL/THIS_MODULE macros	2011-10-31 19:30:31 -04:00