diff mbox series

[mm-unstable,RFC,4/5] memcg: remove mem_cgroup_flush_stats_atomic()

Message ID 20230403220337.443510-5-yosryahmed@google.com
State New
Headers
Series cgroup: eliminate atomic rstat |

Commit Message

Yosry Ahmed April 3, 2023, 10:03 p.m. UTC 
  Previous patches removed all callers of mem_cgroup_flush_stats_atomic().
Remove the function and simplify the code.

Signed-off-by: Yosry Ahmed <yosryahmed@google.com>
---
 include/linux/memcontrol.h |  5 -----
 mm/memcontrol.c            | 24 +++++-------------------
 2 files changed, 5 insertions(+), 24 deletions(-)

Comments

Shakeel Butt April 20, 2023, 7:38 p.m. UTC | #1 
On Mon, Apr 3, 2023 at 3:03 PM Yosry Ahmed <yosryahmed@google.com> wrote:
>
> Previous patches removed all callers of mem_cgroup_flush_stats_atomic().
> Remove the function and simplify the code.
>
> Signed-off-by: Yosry Ahmed <yosryahmed@google.com>

Acked-by: Shakeel Butt <shakeelb@google.com>
diff mbox series

Patch

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 222d7370134c7..00a88cf947e14 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1038,7 +1038,6 @@  static inline unsigned long lruvec_page_state_local(struct lruvec *lruvec,
 }
 
 void mem_cgroup_flush_stats(void);
-void mem_cgroup_flush_stats_atomic(void);
 void mem_cgroup_flush_stats_ratelimited(void);
 
 void __mod_memcg_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
@@ -1537,10 +1536,6 @@  static inline void mem_cgroup_flush_stats(void)
 {
 }
 
-static inline void mem_cgroup_flush_stats_atomic(void)
-{
-}
-
 static inline void mem_cgroup_flush_stats_ratelimited(void)
 {
 }
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index e7fe18c0c0ef2..33339106f1d9b 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -638,7 +638,7 @@  static inline void memcg_rstat_updated(struct mem_cgroup *memcg, int val)
 	}
 }
 
-static void do_flush_stats(bool atomic)
+static void do_flush_stats(void)
 {
 	/*
 	 * We always flush the entire tree, so concurrent flushers can just
@@ -651,30 +651,16 @@  static void do_flush_stats(bool atomic)
 
 	WRITE_ONCE(flush_next_time, jiffies_64 + 2*FLUSH_TIME);
 
-	if (atomic)
-		cgroup_rstat_flush_atomic(root_mem_cgroup->css.cgroup);
-	else
-		cgroup_rstat_flush(root_mem_cgroup->css.cgroup);
+	cgroup_rstat_flush(root_mem_cgroup->css.cgroup);
 
 	atomic_set(&stats_flush_threshold, 0);
 	atomic_set(&stats_flush_ongoing, 0);
 }
 
-static bool should_flush_stats(void)
-{
-	return atomic_read(&stats_flush_threshold) > num_online_cpus();
-}
-
 void mem_cgroup_flush_stats(void)
 {
-	if (should_flush_stats())
-		do_flush_stats(false);
-}
-
-void mem_cgroup_flush_stats_atomic(void)
-{
-	if (should_flush_stats())
-		do_flush_stats(true);
+	if (atomic_read(&stats_flush_threshold) > num_online_cpus())
+		do_flush_stats();
 }
 
 void mem_cgroup_flush_stats_ratelimited(void)
@@ -689,7 +675,7 @@  static void flush_memcg_stats_dwork(struct work_struct *w)
 	 * Always flush here so that flushing in latency-sensitive paths is
 	 * as cheap as possible.
 	 */
-	do_flush_stats(false);
+	do_flush_stats();
 	queue_delayed_work(system_unbound_wq, &stats_flush_dwork, FLUSH_TIME);
 }