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| author | Peter Zijlstra <peterz@infradead.org> | 2023-01-12 20:43:18 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-01-13 11:03:22 +0100 |
| commit | bb7b11258561e47abbacebf76e3ce4092953dfdf (patch) | |
| tree | 11a27fa2aa24b6c6efda42dd2b12c1dc4a2bd3c7 | |
| parent | 5e26aa93391195a64871db5d96d7163f0062ca4f (diff) | |
| download | linux-bb7b11258561e47abbacebf76e3ce4092953dfdf.tar.gz linux-bb7b11258561e47abbacebf76e3ce4092953dfdf.tar.bz2 linux-bb7b11258561e47abbacebf76e3ce4092953dfdf.zip | |
cpuidle: Move IRQ state validation
Make cpuidle_enter_state() consistent with the s2idle variant and
verify ->enter() always returns with interrupts disabled.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20230112195539.576412812@infradead.org
| -rw-r--r-- | drivers/cpuidle/cpuidle.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 6eceb1988243..95c801f0b9a8 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -236,7 +236,11 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, stop_critical_timings(); if (!(target_state->flags & CPUIDLE_FLAG_RCU_IDLE)) ct_idle_enter(); + entered_state = target_state->enter(dev, drv, index); + if (WARN_ONCE(!irqs_disabled(), "%ps leaked IRQ state", target_state->enter)) + raw_local_irq_disable(); + if (!(target_state->flags & CPUIDLE_FLAG_RCU_IDLE)) ct_idle_exit(); start_critical_timings(); @@ -248,12 +252,8 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, /* The cpu is no longer idle or about to enter idle. */ sched_idle_set_state(NULL); - if (broadcast) { - if (WARN_ON_ONCE(!irqs_disabled())) - local_irq_disable(); - + if (broadcast) tick_broadcast_exit(); - } if (!cpuidle_state_is_coupled(drv, index)) local_irq_enable(); |