diff options
| author | Zhongqiu Han <quic_zhonhan@quicinc.com> | 2025-04-05 16:53:08 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-04-09 20:37:30 +0300 |
| commit | d4a7882f93bf2520315d10ab600ea4701e22be69 (patch) | |
| tree | 0f528a81f7a8603a9deeaf75f9310e83a0e4cd2b | |
| parent | 194c396e8a0d25f06dfb02683f8e33727a58882f (diff) | |
| download | linux-d4a7882f93bf2520315d10ab600ea4701e22be69.tar.xz | |
cpuidle: menu: Optimize bucket assignment when next_timer_ns equals KTIME_MAX
Directly assign the last bucket value instead of calling which_bucket()
when next_timer_ns equals KTIME_MAX, the largest possible value that
always falls into the last bucket.
This avoids unnecessary calculations and enhances performance.
Reviewed-by: Christian Loehle <christian.loehle@arm.com>
Signed-off-by: Zhongqiu Han <quic_zhonhan@quicinc.com>
Link: https://patch.msgid.link/20250405135308.1854342-1-quic_zhonhan@quicinc.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/cpuidle/governors/menu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index 39aa0aea61c6..52d5d26fc7c6 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -255,7 +255,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, */ data->next_timer_ns = KTIME_MAX; delta_tick = TICK_NSEC / 2; - data->bucket = which_bucket(KTIME_MAX); + data->bucket = BUCKETS - 1; } if (unlikely(drv->state_count <= 1 || latency_req == 0) || |