[PATCH 18/36] cpuidle: Annotate poll_idle()
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- To: peterz@xxxxxxxxxxxxx
- Subject: [PATCH 18/36] cpuidle: Annotate poll_idle()
- From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- Date: Wed, 08 Jun 2022 16:27:41 +0200
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- References: <20220608142723.103523089@infradead.org>
- User-agent: quilt/0.66
The __cpuidle functions will become a noinstr class, as such they need
explicit annotations.
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
drivers/cpuidle/poll_state.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/cpuidle/poll_state.c
+++ b/drivers/cpuidle/poll_state.c
@@ -13,7 +13,10 @@
static int __cpuidle poll_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv, int index)
{
- u64 time_start = local_clock();
+ u64 time_start;
+
+ instrumentation_begin();
+ time_start = local_clock();
dev->poll_time_limit = false;
@@ -39,6 +42,7 @@ static int __cpuidle poll_idle(struct cp
raw_local_irq_disable();
current_clr_polling();
+ instrumentation_end();
return index;
}
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