From: "Joel Fernandes (Google)" <j...@joelfernandes.org>
synchronize_rcu_mult is now obsolete since all the different RCU flavors
have been consolidated and the API is now common on the updater side.
sched/core.c is the only user of it. All call_rcu_<flavor> calls boil
down to the same call_rcu. So there's no point in calling
synchronize_rcu_mult infact it could potentially be slower due to
waiting for the call_rcu callback twice. Just call synchronize_rcu here
which should do the job.
Signed-off-by: Joel Fernandes (Google) <j...@joelfernandes.org>
---
kernel/sched/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 625bc9897f62..d8311f3cf58c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5791,7 +5791,7 @@ int sched_cpu_deactivate(unsigned int cpu)
*
* Do sync before park smpboot threads to take care the rcu boost case.
*/
- synchronize_rcu_mult(call_rcu, call_rcu_sched);
+ synchronize_rcu();
if (!sched_smp_initialized)
return 0;
--
2.19.0.605.g01d371f741-goog
