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authorVladimir Davydov <vdavydov@parallels.com>2014-12-10 15:42:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-10 17:41:04 -0800
commit1df3b26f201f7f08852c14596bc3ee6ba1826f11 (patch)
tree8eaf11024072d71c3701bc5d25e5d27f446f2ae1 /mm/slab.c
parentb455def28d8a22aee4a13d065b3fd1d296833606 (diff)
downloadlinux-1df3b26f201f7f08852c14596bc3ee6ba1826f11.tar.bz2
slab: print slabinfo header in seq show
Currently we print the slabinfo header in the seq start method, which makes it unusable for showing leaks, so we have leaks_show, which does practically the same as s_show except it doesn't show the header. However, we can print the header in the seq show method - we only need to check if the current element is the first on the list. This will allow us to use the same set of seq iterators for both leaks and slabinfo reporting, which is nice. 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.c')
-rw-r--r--mm/slab.c8
1 files changed, 1 insertions, 7 deletions
diff --git a/mm/slab.c b/mm/slab.c
index eae2d21cc14f..a2152a2573dd 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -4043,12 +4043,6 @@ ssize_t slabinfo_write(struct file *file, const char __user *buffer,
#ifdef CONFIG_DEBUG_SLAB_LEAK
-static void *leaks_start(struct seq_file *m, loff_t *pos)
-{
- mutex_lock(&slab_mutex);
- return seq_list_start(&slab_caches, *pos);
-}
-
static inline int add_caller(unsigned long *n, unsigned long v)
{
unsigned long *p;
@@ -4170,7 +4164,7 @@ static int leaks_show(struct seq_file *m, void *p)
}
static const struct seq_operations slabstats_op = {
- .start = leaks_start,
+ .start = slab_start,
.next = slab_next,
.stop = slab_stop,
.show = leaks_show,