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Daisuke Nishimura 854ffa8d10 memcg: improve performance in moving charge ... Try to reduce overheads in moving charge by: - Instead of calling res_counter_uncharge() against the old cgroup in __mem_cgroup_move_account() everytime, call res_counter_uncharge() at the end of task migration once. - removed css_get(&to->css) from __mem_cgroup_move_account() because callers should have already called css_get(). And removed css_put(&to->css) too, which was called by callers of move_account on success of move_account. - Instead of calling __mem_cgroup_try_charge(), i.e. res_counter_charge(), repeatedly, call res_counter_charge(PAGE_SIZE * count) in can_attach() if possible. - Instead of calling css_get()/css_put() repeatedly, make use of coalesce __css_get()/__css_put() if possible. These changes reduces the overhead from 1.7sec to 0.6sec to move charges of 1G anonymous memory in my test environment. Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Balbir Singh <balbir@linux.vnet.ibm.com> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <menage@google.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		15 years ago
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Kconfig	Merge branch 'x86-bootmem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	15 years ago
Kconfig.debug	…
Makefile	make generic_acl slightly more generic	15 years ago
backing-dev.c	flusher: Fix PF_FROZEN race	15 years ago
bootmem.c	x86: Make 64 bit use early_res instead of bootmem before slab	15 years ago
bounce.c	…
debug-pagealloc.c	…
dmapool.c	…
fadvise.c	readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM	15 years ago
failslab.c	failslab: add ability to filter slab caches	15 years ago
filemap.c	mm: use rlimit helpers	15 years ago
filemap_xip.c	mm: clean up mm_counter	15 years ago
fremap.c	mm: clean up mm_counter	15 years ago
highmem.c	highmem: Fix debug_kmap_atomic() to also handle KM_IRQ_PTE, KM_NMI, and KM_NMI_PTE	15 years ago
hugetlb.c	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	15 years ago
hwpoison-inject.c	HWPOISON: Don't do early filtering if filter is disabled	15 years ago
init-mm.c	…
internal.h	HWPOISON: add an interface to switch off/on all the page filters	15 years ago
kmemcheck.c	…
kmemleak-test.c	…
kmemleak.c	Merge branch 'kmemleak' of git://linux-arm.org/linux-2.6	15 years ago
ksm.c	mm: change anon_vma linking to fix multi-process server scalability issue	15 years ago
maccess.c	maccess,probe_kernel: Allow arch specific override probe_kernel_(read|write)	15 years ago
madvise.c	HWPOISON: Add a madvise() injector for soft page offlining	15 years ago
memcontrol.c	memcg: improve performance in moving charge	15 years ago
memory-failure.c	mm: change anon_vma linking to fix multi-process server scalability issue	15 years ago
memory.c	mm: introduce dump_page() and print symbolic flag names	15 years ago
memory_hotplug.c	mm: introduce dump_page() and print symbolic flag names	15 years ago
mempolicy.c	mm/mempolicy.c: fix indentation of the comments of do_migrate_pages	15 years ago
mempool.c	…
migrate.c	mm/migrate.c: kill anon local variable from migrate_page_copy	15 years ago
mincore.c	mm: hugetlb: fix hugepage memory leak in mincore()	15 years ago
mlock.c	mm: use rlimit helpers	15 years ago
mm_init.c	…
mmap.c	Add generic sys_old_mmap()	15 years ago
mmu_context.c	mm: export use_mm/unuse_mm to modules	15 years ago
mmu_notifier.c	…
mmzone.c	…
mprotect.c	…
mremap.c	mm: change anon_vma linking to fix multi-process server scalability issue	15 years ago
msync.c	…
nommu.c	Add generic sys_old_mmap()	15 years ago
oom_kill.c	mm: clean up mm_counter	15 years ago
page-writeback.c	writeback: remove unused nonblocking and congestion checks	15 years ago
page_alloc.c	mm: introduce dump_page() and print symbolic flag names	15 years ago
page_cgroup.c	…
page_io.c	swap: rework map_swap_page() again	15 years ago
page_isolation.c	…
pagewalk.c	mm hugetlb: add hugepage support to pagemap	15 years ago
percpu.c	early_res: Add free_early_partial()	15 years ago
prio_tree.c	…
quicklist.c	…
readahead.c	readahead: introduce FMODE_RANDOM for POSIX_FADV_RANDOM	15 years ago
rmap.c	vmscan: detect mapped file pages used only once	15 years ago
shmem.c	Fix breakage in shmem.c	15 years ago
slab.c	Merge branches 'slab/cleanups', 'slab/failslab', 'slab/fixes' and 'slub/percpu' into slab-for-linus	15 years ago
slob.c	…
slub.c	Driver core: Constify struct sysfs_ops in struct kobj_type	15 years ago
sparse-vmemmap.c	sparsemem: Put mem map for one node together.	15 years ago
sparse.c	sparsemem: Fix compilation on PowerPC	15 years ago
swap.c	mm: remove free_hot_page()	15 years ago
swap_state.c	…
swapfile.c	mm: add comment on swap_duplicate's error code	15 years ago
thrash.c	…
truncate.c	vfs: Fix vmtruncate() regression	15 years ago
util.c	nommu: don't need get_unmapped_area() for NOMMU	15 years ago
vmalloc.c	mm: purge fragmented percpu vmap blocks	15 years ago
vmscan.c	vmscan: detect mapped file pages used only once	15 years ago
vmstat.c	mm: restore zone->all_unreclaimable to independence word	15 years ago