lkml.org 
[lkml]   [2022]   [Jun]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
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;

\
 
 \ /
  Last update: 2022-06-08 16:51    [W:0.474 / U:0.504 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site