From: "Peter Zijlstra (Intel)" <[email protected]> All callers to rcu_idle_enter() have irqs disabled, so there is no point in rcu_idle_enter disabling them again. This commit therefore replaces the irq disabling with a RCU_LOCKDEP_WARN().
Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]> --- kernel/rcu/tree.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index c028eb254704..64b2cb9a8830 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -843,11 +843,8 @@ static void rcu_eqs_enter(bool user) */ void rcu_idle_enter(void) { - unsigned long flags; - - local_irq_save(flags); + RCU_LOCKDEP_WARN(!irqs_disabled(), "rcu_idle_enter() invoked with irqs enabled!!!"); rcu_eqs_enter(false); - local_irq_restore(flags); } EXPORT_SYMBOL_GPL(rcu_idle_enter); -- 2.5.2
