Message ID | 20220919101520.602636221@infradead.org (mailing list archive) |
---|---|
State | Handled Elsewhere |
Headers | show
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Series |
cpuidle,rcu: Clean up the mess
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expand
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--- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -236,7 +236,11 @@ int cpuidle_enter_state(struct cpuidle_d 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_d /* 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();
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> --- drivers/cpuidle/cpuidle.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)