mm: memcg: clean up fault accounting
The fault accounting functions have a single, memcg-internal user, so they
don't need to be global. In fact, their one-line bodies can be directly
folded into the caller. And since faults happen one at a time, use
this_cpu_inc() directly instead of this_cpu_add(foo, 1).
Signed-off-by: Johannes Weiner <jweiner@redhat.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index aeb2393..93cb16d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -655,16 +655,6 @@
this_cpu_add(memcg->stat->count[MEM_CGROUP_STAT_SWAPOUT], val);
}
-void mem_cgroup_pgfault(struct mem_cgroup *memcg, int val)
-{
- this_cpu_add(memcg->stat->events[MEM_CGROUP_EVENTS_PGFAULT], val);
-}
-
-void mem_cgroup_pgmajfault(struct mem_cgroup *memcg, int val)
-{
- this_cpu_add(memcg->stat->events[MEM_CGROUP_EVENTS_PGMAJFAULT], val);
-}
-
static unsigned long mem_cgroup_read_events(struct mem_cgroup *memcg,
enum mem_cgroup_events_index idx)
{
@@ -978,11 +968,11 @@
goto out;
switch (idx) {
- case PGMAJFAULT:
- mem_cgroup_pgmajfault(memcg, 1);
- break;
case PGFAULT:
- mem_cgroup_pgfault(memcg, 1);
+ this_cpu_inc(memcg->stat->events[MEM_CGROUP_EVENTS_PGFAULT]);
+ break;
+ case PGMAJFAULT:
+ this_cpu_inc(memcg->stat->events[MEM_CGROUP_EVENTS_PGMAJFAULT]);
break;
default:
BUG();