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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@linux.ibm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
This commit is contained in:
Paul E. McKenney 2018-11-06 19:09:14 -08:00
parent 51959d85f3
commit c9a863bbb1
1 changed files with 2 additions and 2 deletions
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4
kernel/sched/membarrier.c
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@ -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);