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Date: Fri, 17 Feb 2012 13:20:31 -0800 (PST) From: Hugh Dickins <hughd@...gle.com> To: "Paul E. McKenney" <paul.mckenney@...aro.org> cc: linux-kernel@...r.kernel.org Subject: [PATCH next] rcu: stop spurious warnings from synchronize_sched_expedited synchronize_sched_expedited() is spamming CONFIG_DEBUG_PREEMPT=y users with an unintended warning from the cpu_is_offline() check: use raw_smp_processor_id() instead of smp_processor_id() there. Signed-off-by: Hugh Dickins <hughd@...gle.com> --- kernel/rcutree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- next/kernel/rcutree.c 2012-02-17 08:02:15.680065066 -0800 +++ linux/kernel/rcutree.c 2012-02-17 10:41:18.764003566 -0800 @@ -2014,7 +2014,7 @@ void synchronize_sched_expedited(void) /* Note that atomic_inc_return() implies full memory barrier. */ firstsnap = snap = atomic_inc_return(&sync_sched_expedited_started); get_online_cpus(); - WARN_ON_ONCE(cpu_is_offline(smp_processor_id())); + WARN_ON_ONCE(cpu_is_offline(raw_smp_processor_id())); /* * Each pass through the following loop attempts to force a -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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