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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2013-02-28 19:00:43 (GMT) |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2013-02-28 19:00:43 (GMT) |
| commit | 4cd5d1115c2f752ca94a0eb461b36d88fb37ed1e (patch) | |
| tree | c36ae69ce4ed479d55d407a4243eb569bb56afc1 /kernel/softirq.c | |
| parent | 4d4c4e24cf48400a24d33feffc7cca4f4e8cabe1 (diff) | |
| download | linux-4cd5d1115c2f752ca94a0eb461b36d88fb37ed1e.tar.xz | |
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/softirq.c')
| -rw-r--r-- | kernel/softirq.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/kernel/softirq.c b/kernel/softirq.c index f42ff97..dce38fa 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 } /* |