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
compaction.c
debug-pagealloc.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c
filemap_xip.c
fremap.c
frontswap.c
gup.c
highmem.c
huge_memory.c
hugetlb.c
hugetlb_cgroup.c	hugetlb_cgroup: use lockdep_assert_held rather than spin_is_locked	2014-08-29 16:28:16 -07:00
hwpoison-inject.c
init-mm.c
internal.h
interval_tree.c
iov_iter.c
Kconfig
Kconfig.debug
kmemcheck.c
kmemleak-test.c
kmemleak.c
ksm.c
list_lru.c
maccess.c
madvise.c
Makefile
memblock.c
memcontrol.c	mm: memcontrol: revert use of root_mem_cgroup res_counter	2014-09-05 08:19:02 -07:00
memory-failure.c
memory.c	x86,mm: fix pte_special versus pte_numa	2014-08-29 16:28:16 -07:00
memory_hotplug.c
mempolicy.c
mempool.c
migrate.c
mincore.c
mlock.c
mm_init.c
mmap.c
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c
mremap.c
msync.c
nobootmem.c
nommu.c
oom_kill.c
page-writeback.c
page_alloc.c
page_cgroup.c
page_io.c
page_isolation.c
pagewalk.c
percpu-km.c
percpu-vm.c
percpu.c
pgtable-generic.c
process_vm_access.c
quicklist.c
readahead.c
rmap.c
shmem.c
slab.c
slab.h
slab_common.c
slob.c
slub.c
sparse-vmemmap.c
sparse.c
swap.c
swap_state.c
swapfile.c
truncate.c
util.c
vmacache.c
vmalloc.c
vmpressure.c
vmscan.c
vmstat.c
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