| Date | Wed, 08 Jun 2022 16:27:26 +0200 | From | Peter Zijlstra <> | Subject | [PATCH 03/36] cpuidle/poll: Ensure IRQ state is invariant |
| |
cpuidle_state::enter() methods should be IRQ invariant
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- drivers/cpuidle/poll_state.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/cpuidle/poll_state.c +++ b/drivers/cpuidle/poll_state.c @@ -17,7 +17,7 @@ static int __cpuidle poll_idle(struct cp 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 cp } } } + raw_local_irq_disable(); + current_clr_polling(); return index;
|