rcu: Switch to exedited grace periods for suspend as well as hibernation
Commit 587ff2cf ("rcu: Expedite grace periods during suspend/resume")
enabled expedited grace periods for hibernation, but not for suspend.
The same issue applies to both cases, so this commit simply applies the
same logic by adding additional cases to the switch statement.
Note that this commit also switches from PM_POST_RESTORE to the
combination of PM_POST_HIBERNATION and PM_POST_SUSPEND. A separate
patch from Borislav Petkov corrects the documentation to indicate that
this is necessary.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 63d27f1..5b651e4 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -2978,10 +2978,12 @@
{
switch (action) {
case PM_HIBERNATION_PREPARE:
+ case PM_SUSPEND_PREPARE:
if (nr_cpu_ids <= 256) /* Expediting bad for large systems. */
rcu_expedited = 1;
break;
- case PM_POST_RESTORE:
+ case PM_POST_HIBERNATION:
+ case PM_POST_SUSPEND:
rcu_expedited = 0;
break;
default:
