sparc/oprofile: Convert timer_stop() to use synchronize_rcu()

Now that synchronize_rcu() waits for preempt-disable regions of code
in addition to explicitly marked RCU read-side critical sections,
synchronize_rcu() can be used in place of synchronize_sched().  This
commit therefore makes that change.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Robert Richter <rric@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: <oprofile-list@lists.sf.net>
Cc: <sparclinux@vger.kernel.org>

diff --git a/arch/sparc/oprofile/init.c b/arch/sparc/oprofile/init.c
index f9024bccff163f06fcca11054865b885086dc8c0..43730c9b1c8671ad5c6295c4caa05c6e193e0aa2 100644 (file)
--- a/arch/sparc/oprofile/init.c
+++ b/arch/sparc/oprofile/init.c
@@ -53,7 +53,7 @@ static void timer_stop(void)
 {
        nmi_adjust_hz(1);
        unregister_die_notifier(&profile_timer_exceptions_nb);
-       synchronize_sched();  /* Allow already-started NMIs to complete. */
+       synchronize_rcu();  /* Allow already-started NMIs to complete. */
 }
 
 static int op_nmi_timer_init(struct oprofile_operations *ops)