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| author | Dennis Zhou (Facebook) <dennisszhou@gmail.com> | 2017-07-15 22:23:08 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2017-07-17 10:46:58 -0400 |
| commit | 6b9b6f39946c4a7a98fac31ee91bac43cd2b73a9 (patch) | |
| tree | f6405a03492b80c36dec85a784430106d85ce82a /mm/percpu.c | |
| parent | 02459164a27e6cf9577fd12fc3ebed78f8fa767f (diff) | |
| download | lwn-6b9b6f39946c4a7a98fac31ee91bac43cd2b73a9.tar.gz lwn-6b9b6f39946c4a7a98fac31ee91bac43cd2b73a9.zip | |
percpu: expose pcpu_nr_empty_pop_pages in pcpu_stats
Percpu memory holds a minimum threshold of pages that are populated
in order to serve atomic percpu memory requests. This change makes it
easier to verify that there are a minimum number of populated pages
lying around.
Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'mm/percpu.c')
| -rw-r--r-- | mm/percpu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index bd4130a69bbc..9ec5fd498f1d 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -160,7 +160,7 @@ static LIST_HEAD(pcpu_map_extend_chunks); * The number of empty populated pages, protected by pcpu_lock. The * reserved chunk doesn't contribute to the count. */ -static int pcpu_nr_empty_pop_pages; +int pcpu_nr_empty_pop_pages; /* * Balance work is used to populate or destroy chunks asynchronously. We |