mac80211: debounce queue stop/wake
When the queue status changes we need to do a fair
bit of work, so ignore no-op changes early.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 2b62307..ef725ca 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -276,6 +276,9 @@
if (WARN_ON(queue >= hw->queues))
return;
+ if (!test_bit(reason, &local->queue_stop_reasons[queue]))
+ return;
+
__clear_bit(reason, &local->queue_stop_reasons[queue]);
if (local->queue_stop_reasons[queue] != 0)
@@ -323,6 +326,9 @@
if (WARN_ON(queue >= hw->queues))
return;
+ if (test_bit(reason, &local->queue_stop_reasons[queue]))
+ return;
+
__set_bit(reason, &local->queue_stop_reasons[queue]);
rcu_read_lock();