Make use of the flush tracepoint within memcontrol.
Signed-off-by: JP Kobryn <inwardvessel@xxxxxxxxx>
---
mm/memcontrol.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 18c3f513d766..f816737228fa 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -613,8 +613,11 @@ void mem_cgroup_flush_stats(struct mem_cgroup *memcg)
if (!memcg)
memcg = root_mem_cgroup;
- if (memcg_vmstats_needs_flush(memcg->vmstats))
+ if (memcg_vmstats_needs_flush(memcg->vmstats)) {
+ trace_memcg_flush_stats(memcg, TRACE_MEMCG_FLUSH_READER);
do_flush_stats(memcg);
+ } else
+ trace_memcg_flush_stats(memcg, TRACE_MEMCG_FLUSH_READER_SKIP);
}
void mem_cgroup_flush_stats_ratelimited(struct mem_cgroup *memcg)
@@ -630,6 +633,7 @@ static void flush_memcg_stats_dwork(struct work_struct *w)
* Deliberately ignore memcg_vmstats_needs_flush() here so that flushing
* in latency-sensitive paths is as cheap as possible.
*/
+ trace_memcg_flush_stats(root_mem_cgroup, TRACE_MEMCG_FLUSH_PERIODIC);
do_flush_stats(root_mem_cgroup);
queue_delayed_work(system_unbound_wq, &stats_flush_dwork, FLUSH_TIME);
}
@@ -5285,6 +5289,7 @@ bool obj_cgroup_may_zswap(struct obj_cgroup *objcg)
* mem_cgroup_flush_stats() ignores small changes. Use
* do_flush_stats() directly to get accurate stats for charging.
*/
+ trace_memcg_flush_stats(memcg, TRACE_MEMCG_FLUSH_ZSWAP);
do_flush_stats(memcg);
pages = memcg_page_state(memcg, MEMCG_ZSWAP_B) / PAGE_SIZE;
if (pages < max)
--
2.47.0
