diff options
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/poll_state.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/cpuidle/poll_state.c b/drivers/cpuidle/poll_state.c index 68cdc506524b..3f86d23c592e 100644 --- a/drivers/cpuidle/poll_state.c +++ b/drivers/cpuidle/poll_state.c @@ -10,6 +10,7 @@ #include <linux/sched/idle.h> #define POLL_IDLE_TIME_LIMIT (TICK_NSEC / 16) +#define POLL_IDLE_RELAX_COUNT 200 static int __cpuidle poll_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) @@ -18,9 +19,14 @@ static int __cpuidle poll_idle(struct cpuidle_device *dev, local_irq_enable(); if (!current_set_polling_and_test()) { + unsigned int loop_count = 0; + while (!need_resched()) { cpu_relax(); + if (loop_count++ < POLL_IDLE_RELAX_COUNT) + continue; + loop_count = 0; if (local_clock() - time_start > POLL_IDLE_TIME_LIMIT) break; } |