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authorFrederic Weisbecker <fweisbec@gmail.com>2013-02-28 20:00:43 +0100
committerFrederic Weisbecker <fweisbec@gmail.com>2013-02-28 20:00:43 +0100
commit4cd5d1115c2f752ca94a0eb461b36d88fb37ed1e (patch)
treec36ae69ce4ed479d55d407a4243eb569bb56afc1 /kernel
parent4d4c4e24cf48400a24d33feffc7cca4f4e8cabe1 (diff)
downloadvexpress-lsk-4cd5d1115c2f752ca94a0eb461b36d88fb37ed1e.tar.gz
irq: Don't re-enable interrupts at the end of irq_exit
Commit 74eed0163d0def3fce27228d9ccf3d36e207b286 "irq: Ensure irq_exit() code runs with interrupts disabled" restore interrupts flags in the end of irq_exit() for archs that don't define __ARCH_IRQ_EXIT_IRQS_DISABLED. However always returning from irq_exit() with interrupts disabled should not be a problem for these archs. Prior to this commit this was already happening anytime we processed pending softirqs anyway. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/softirq.c7
1 files changed, 1 insertions, 6 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c
index f42ff97e1f8..dce38fac4f3 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -334,9 +334,7 @@ static inline void invoke_softirq(void)
void irq_exit(void)
{
#ifndef __ARCH_IRQ_EXIT_IRQS_DISABLED
- unsigned long flags;
-
- local_irq_save(flags);
+ local_irq_disable();
#else
WARN_ON_ONCE(!irqs_disabled());
#endif
@@ -353,9 +351,6 @@ void irq_exit(void)
tick_nohz_irq_exit();
#endif
rcu_irq_exit();
-#ifndef __ARCH_IRQ_EXIT_IRQS_DISABLED
- local_irq_restore(flags);
-#endif
}
/*