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authorAndy Lutomirski <luto@kernel.org>2016-07-29 00:48:17 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-29 01:07:41 +0200
commitefdc94907977d2db84b4b00cb9bd98ca011f6819 (patch)
tree9cccfb94330085fbc897f219bca95135c18765db /mm
parentmm: track NR_KERNEL_STACK in KiB instead of number of stacks (diff)
downloadlinux-efdc94907977d2db84b4b00cb9bd98ca011f6819.tar.xz
linux-efdc94907977d2db84b4b00cb9bd98ca011f6819.zip
mm: fix memcg stack accounting for sub-page stacks
We should account for stacks regardless of stack size, and we need to account in sub-page units if THREAD_SIZE < PAGE_SIZE. Change the units to kilobytes and Move it into account_kernel_stack(). Fixes: 12580e4b54ba8 ("mm: memcontrol: report kernel stack usage in cgroup2 memory.stat") Link: http://lkml.kernel.org/r/9b5314e3ee5eda61b0317ec1563768602c1ef438.1468523549.git.luto@kernel.org Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Vladimir Davydov <vdavydov@virtuozzo.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Reviewed-by: Josh Poimboeuf <jpoimboe@redhat.com> Reviewed-by: Vladimir Davydov <vdavydov@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memcontrol.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 13be30c3ea78..c265212bec8c 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5171,7 +5171,7 @@ static int memory_stat_show(struct seq_file *m, void *v)
seq_printf(m, "file %llu\n",
(u64)stat[MEM_CGROUP_STAT_CACHE] * PAGE_SIZE);
seq_printf(m, "kernel_stack %llu\n",
- (u64)stat[MEMCG_KERNEL_STACK] * PAGE_SIZE);
+ (u64)stat[MEMCG_KERNEL_STACK_KB] * 1024);
seq_printf(m, "slab %llu\n",
(u64)(stat[MEMCG_SLAB_RECLAIMABLE] +
stat[MEMCG_SLAB_UNRECLAIMABLE]) * PAGE_SIZE);