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authorDennis Zhou (Facebook) <dennisszhou@gmail.com>2017-07-15 22:23:08 -0400
committerTejun Heo <tj@kernel.org>2017-07-17 10:46:58 -0400
commit6b9b6f39946c4a7a98fac31ee91bac43cd2b73a9 (patch)
treef6405a03492b80c36dec85a784430106d85ce82a /mm/percpu-internal.h
parent02459164a27e6cf9577fd12fc3ebed78f8fa767f (diff)
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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-internal.h')
-rw-r--r--mm/percpu-internal.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/percpu-internal.h b/mm/percpu-internal.h
index cd2442e13d8f..c9158a48ca05 100644
--- a/mm/percpu-internal.h
+++ b/mm/percpu-internal.h
@@ -36,6 +36,7 @@ extern spinlock_t pcpu_lock;
extern struct list_head *pcpu_slot;
extern int pcpu_nr_slots;
+extern int pcpu_nr_empty_pop_pages;
extern struct pcpu_chunk *pcpu_first_chunk;
extern struct pcpu_chunk *pcpu_reserved_chunk;