Commit-ID: c9a863bbb1620dca3af57934cdbb002e852449fc Gitweb: https://git.kernel.org/tip/c9a863bbb1620dca3af57934cdbb002e852449fc Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> AuthorDate: Tue, 6 Nov 2018 19:09:14 -0800 Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> CommitDate: Tue, 27 Nov 2018 09:21:43 -0800 sched/membarrier: synchronize_sched() with synchronize_rcu() Now that synchronize_rcu() waits for preempt-disable regions of code as well as RCU read-side critical sections, synchronize_sched() can be replaced by synchronize_rcu(). This commit therefore makes this change. Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> --- kernel/sched/membarrier.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/sched/membarrier.c b/kernel/sched/membarrier.c index 388a7a6c1aa2..3cd8a3a795d2 100644 --- a/kernel/sched/membarrier.c +++ b/kernel/sched/membarrier.c @@ -210,7 +210,7 @@ static int membarrier_register_global_expedited(void) * future scheduler executions will observe the new * thread flag state for this mm. */ - synchronize_sched(); + synchronize_rcu(); } atomic_or(MEMBARRIER_STATE_GLOBAL_EXPEDITED_READY, &mm->membarrier_state); @@ -246,7 +246,7 @@ static int membarrier_register_private_expedited(int flags) * Ensure all future scheduler executions will observe the * new thread flag state for this process. */ - synchronize_sched(); + synchronize_rcu(); } atomic_or(state, &mm->membarrier_state);
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