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| author | Vladimir Davydov <vdavydov@parallels.com> | 2014-12-11 02:44:19 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-11 04:41:07 +0300 |
| commit | b047501cd9f11d5e1d54ea0f90e2b10754021a0e (patch) | |
| tree | 5532702b7921006bc6ffd02a04e481c04fa20481 /mm/slab.h | |
| parent | 4ef461e8f4dd13a2e64c6c8f00c420d62294e2d4 (diff) | |
| download | linux-b047501cd9f11d5e1d54ea0f90e2b10754021a0e.tar.xz | |
memcg: use generic slab iterators for showing slabinfo
Let's use generic slab_start/next/stop for showing memcg caches info. In
contrast to the current implementation, this will work even if all memcg
caches' info doesn't fit into a seq buffer (a page), plus it simply looks
neater.
Actually, the main reason I do this isn't mere cleanup. I'm going to zap
the memcg_slab_caches list, because I find it useless provided we have the
slab_caches list, and this patch is a step in this direction.
It should be noted that before this patch an attempt to read
memory.kmem.slabinfo of a cgroup that doesn't have kmem limit set resulted
in -EIO, while after this patch it will silently show nothing except the
header, but I don't think it will frustrate anyone.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.h')
| -rw-r--r-- | mm/slab.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/slab.h b/mm/slab.h index 078acbcf64e8..1cf4005482dd 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -360,5 +360,6 @@ static inline struct kmem_cache_node *get_node(struct kmem_cache *s, int node) void *slab_start(struct seq_file *m, loff_t *pos); void *slab_next(struct seq_file *m, void *p, loff_t *pos); void slab_stop(struct seq_file *m, void *p); +int memcg_slab_show(struct seq_file *m, void *p); #endif /* MM_SLAB_H */ |