smp/core: Use lockdep to assert IRQs are disabled/enabled

Use lockdep to check that IRQs are enabled or disabled as expected. This
way the sanity check only shows overhead when concurrency correctness
debug code is enabled.

Signed-off-by: Frederic Weisbecker <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Cc: David S . Miller <[email protected]>
Cc: Lai Jiangshan <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Tejun Heo <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/kernel/smp.c b/kernel/smp.c
index c94dd85c8d41798443a7080af55c24fe508815b3..084c8b3a26812d78e3eb2da63d46091e491a7e23 100644 (file)
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -213,7 +213,7 @@ static void flush_smp_call_function_queue(bool warn_cpu_offline)
        call_single_data_t *csd, *csd_next;
        static bool warned;
 
-       WARN_ON(!irqs_disabled());
+       lockdep_assert_irqs_disabled();
 
        head = this_cpu_ptr(&call_single_queue);
        entry = llist_del_all(head);