[PATCH 18/36] cpuidle: Annotate poll_idle()

Peter Zijlstra
2022-06-08T14:48:08Z

The __cpuidle functions will become a noinstr class, as such they need
explicit annotations.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
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;
}