Johannes Weiner ce00a96737 mm: memcontrol: revert use of root_mem_cgroup res_counter ... Dave Hansen reports a massive scalability regression in an uncontained page fault benchmark with more than 30 concurrent threads, which he bisected down to 05b8430123 ("mm: memcontrol: use root_mem_cgroup res_counter") and pin-pointed on res_counter spinlock contention. That change relied on the per-cpu charge caches to mostly swallow the res_counter costs, but it's apparent that the caches don't scale yet. Revert memcg back to bypassing res_counters on the root level in order to restore performance for uncontained workloads. Reported-by: Dave Hansen <dave@sr71.net> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Tested-by: Dave Hansen <dave.hansen@intel.com> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Vladimir Davydov <vdavydov@parallels.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-09-05 08:19:02 -07:00
..
backing-dev.c
balloon_compaction.c
bootmem.c
cleancache.c
cma.c	mm, CMA: clean-up log message	2014-08-06 18:01:16 -07:00
compaction.c
debug-pagealloc.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap_xip.c
filemap.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-08-11 11:44:11 -07:00
fremap.c
frontswap.c
gup.c	mm: describe mmap_sem rules for __lock_page_or_retry() and callers	2014-08-06 18:01:20 -07:00
highmem.c	mm/highmem: make kmap cache coloring aware	2014-08-06 18:01:22 -07:00
huge_memory.c	mm: memcontrol: rewrite charge API	2014-08-08 15:57:17 -07:00
hugetlb_cgroup.c	hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked	2014-08-29 16:28:16 -07:00
hugetlb.c	mm: fix potential infinite loop in dissolve_free_huge_pages()	2014-08-06 18:01:21 -07:00
hwpoison-inject.c	mm/hwpoison-inject.c: remove unnecessary null test before debugfs_remove_recursive	2014-08-06 18:01:19 -07:00
init-mm.c
internal.h	mm/internal.h: use nth_page	2014-08-06 18:01:16 -07:00
interval_tree.c
iov_iter.c	switch iov_iter_get_pages() to passing maximal number of pages	2014-08-07 14:40:11 -04:00
Kconfig	mm/zpool: update zswap to use zpool	2014-08-06 18:01:23 -07:00
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c	sched: Remove proliferation of wait_on_bit() action functions	2014-07-16 15:10:39 +02:00
list_lru.c
maccess.c
madvise.c	mm: update the description for madvise_remove	2014-08-06 18:01:18 -07:00
Makefile	mm/zpool: implement common zpool api to zbud/zsmalloc	2014-08-06 18:01:23 -07:00
memblock.c	memblock, memhotplug: fix wrong type in memblock_find_in_range_node().	2014-08-29 16:28:15 -07:00
memcontrol.c	mm: memcontrol: revert use of root_mem_cgroup res_counter	2014-09-05 08:19:02 -07:00
memory_hotplug.c	memory-hotplug: add zone_for_memory() for selecting zone for new memory	2014-08-06 18:01:21 -07:00
memory-failure.c	hwpoison: fix race with changing page during offlining	2014-08-06 18:01:19 -07:00
memory.c	x86,mm: fix pte_special versus pte_numa	2014-08-29 16:28:16 -07:00
mempolicy.c	Merge branch 'for-3.16-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2014-07-10 11:38:23 -07:00
mempool.c
migrate.c	mm: memcontrol: rewrite uncharge API	2014-08-08 15:57:17 -07:00
mincore.c
mlock.c	mm: describe mmap_sem rules for __lock_page_or_retry() and callers	2014-08-06 18:01:20 -07:00
mm_init.c
mmap.c	mm: allow drivers to prevent new writable mappings	2014-08-08 15:57:31 -07:00
mmu_context.c
mmu_notifier.c	mmu_notifier: add call_srcu and sync function for listener to delay call and sync	2014-08-06 18:01:22 -07:00
mmzone.c
mprotect.c
mremap.c
msync.c	msync: fix incorrect fstart calculation	2014-07-03 09:21:53 -07:00
nobootmem.c
nommu.c	arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area	2014-08-08 15:57:27 -07:00
oom_kill.c	mm, oom: remove unnecessary exit_state check	2014-08-06 18:01:21 -07:00
page_alloc.c	mm, thp: restructure thp avoidance of light synchronous migration	2014-08-06 18:01:21 -07:00
page_cgroup.c
page_io.c	fix __swap_writepage() compile failure on old gcc versions	2014-06-14 19:30:48 -05:00
page_isolation.c
page-writeback.c	mm, writeback: prevent race when calculating dirty limits	2014-08-06 18:01:21 -07:00
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c	percpu: Use ALIGN macro instead of hand coding alignment calculation	2014-06-19 11:00:27 -04:00
pgtable-generic.c	mm: actually clear pmd_numa before invalidating	2014-08-29 16:28:15 -07:00
process_vm_access.c
quicklist.c
readahead.c	mm/readahead.c: remove unused file_ra_state from count_history_pages	2014-08-06 18:01:15 -07:00
rmap.c	mm: memcontrol: rewrite uncharge API	2014-08-08 15:57:17 -07:00
shmem.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-08-11 11:44:11 -07:00
slab_common.c	mm: move slab related stuff from util.c to slab_common.c	2014-08-06 18:01:15 -07:00
slab.c	Revert "slab: remove BAD_ALIEN_MAGIC"	2014-08-08 15:57:17 -07:00
slab.h	slab: convert last use of __FUNCTION__ to __func__	2014-08-06 18:01:15 -07:00
slob.c
slub.c	slub: remove kmemcg id from create_unique_id	2014-08-06 18:01:21 -07:00
sparse-vmemmap.c
sparse.c
swap_state.c	mm: allow drivers to prevent new writable mappings	2014-08-08 15:57:31 -07:00
swap.c	mm: memcontrol: use page lists for uncharge batching	2014-08-08 15:57:18 -07:00
swapfile.c	mm: memcontrol: rewrite uncharge API	2014-08-08 15:57:17 -07:00
truncate.c	mm: memcontrol: rewrite uncharge API	2014-08-08 15:57:17 -07:00
util.c	vm_is_stack: use for_each_thread() rather then buggy while_each_thread()	2014-08-08 15:57:17 -07:00
vmacache.c
vmalloc.c	mm/vmalloc.c: clean up map_vm_area third argument	2014-08-06 18:01:19 -07:00
vmpressure.c
vmscan.c	mm: memcontrol: use page lists for uncharge batching	2014-08-08 15:57:18 -07:00
vmstat.c	mm: vmscan: only update per-cpu thresholds for online CPU	2014-08-06 18:01:20 -07:00
workingset.c
zbud.c	mm/zpool: use prefixed module loading	2014-08-29 16:28:16 -07:00
zpool.c	mm/zpool: use prefixed module loading	2014-08-29 16:28:16 -07:00
zsmalloc.c	mm/zpool: use prefixed module loading	2014-08-29 16:28:16 -07:00
zswap.c	mm/zswap.c: add __init to zswap_entry_cache_destroy()	2014-08-08 15:57:18 -07:00