Commit-ID: 78d125d33858d00756baf0f40e75e77dcbfbea55 Gitweb: https://git.kernel.org/tip/78d125d33858d00756baf0f40e75e77dcbfbea55 Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> AuthorDate: Wed, 11 Jul 2018 15:36:43 -0700 Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> CommitDate: Thu, 8 Nov 2018 21:43:20 -0800 sched/membarrier: Replace synchronize_sched() with synchronize_rcu() Now that synchronize_rcu() waits for preempt-disable regions of code as well as RCU read-side critical sections, the synchronize_sched() in sys_membarrier() can be replaced by synchronize_rcu(). This commit therefore makes this change. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx> Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> --- kernel/sched/membarrier.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c index 76e0eaf4654e..388a7a6c1aa2 100644 --- a/kernel/sched/membarrier.c +++ b/kernel/sched/membarrier.c @@ -298,7 +298,7 @@ SYSCALL_DEFINE2(membarrier, int, cmd, int, flags) if (tick_nohz_full_enabled()) return -EINVAL; if (num_online_cpus() > 1) - synchronize_sched(); + synchronize_rcu(); return 0; case MEMBARRIER_CMD_GLOBAL_EXPEDITED: return membarrier_global_expedited();
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