cpuidle/poll: Ensure IRQs stay disabled after cpuidle_state::enter() calls

Make cpuidle_state::enter() methods IRQ state invariant on exit.

Additionally make sure to use raw_local_irq_*() methods since this
cpuidle callback will be called with RCU already 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>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20230112195539.515253662@infradead.org
This commit is contained in:
Peter Zijlstra 2023-01-12 20:43:17 +01:00 committed by Ingo Molnar
parent aaa3896b96
commit 5e26aa9339

View File

@ -17,7 +17,7 @@ static int __cpuidle poll_idle(struct cpuidle_device *dev,
dev->poll_time_limit = false;
local_irq_enable();
raw_local_irq_enable();
if (!current_set_polling_and_test()) {
unsigned int loop_count = 0;
u64 limit;
@ -36,6 +36,8 @@ static int __cpuidle poll_idle(struct cpuidle_device *dev,
}
}
}
raw_local_irq_disable();
current_clr_polling();
return index;