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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-07-30 12:11:08 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-08-10 14:34:28 +0200 |
| commit | b7e7fffd3e8c81aa0654ed4c9f7a142b4c4dab1a (patch) | |
| tree | 359584da2ba92f2512edd87d28384180be421d86 /drivers/cpuidle | |
| parent | cab09f3d2d2a0a6cb3dfb678660d67a2c3764f50 (diff) | |
| download | linux-b7e7fffd3e8c81aa0654ed4c9f7a142b4c4dab1a.tar.bz2 | |
cpuidle: teo: Get rid of redundant check in teo_update()
Notice that setting measured_us to UINT_MAX in teo_update() earlier
doesn't change the behavior of the following code, so do that and
eliminate a redundant check used for setting measured_us to UINT_MAX.
This change is not expected to alter functionality.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/governors/teo.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/cpuidle/governors/teo.c b/drivers/cpuidle/governors/teo.c index 4d7a60c5b24a..b5a0e498f798 100644 --- a/drivers/cpuidle/governors/teo.c +++ b/drivers/cpuidle/governors/teo.c @@ -123,10 +123,11 @@ static void teo_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) if (cpu_data->time_span_ns >= cpu_data->sleep_length_ns) { /* - * One of the safety nets has triggered or this was a timer - * wakeup (or equivalent). + * One of the safety nets has triggered or the wakeup was close + * enough to the closest timer event expected at the idle state + * selection time to be discarded. */ - measured_us = sleep_length_us; + measured_us = UINT_MAX; } else { unsigned int lat; @@ -189,15 +190,6 @@ static void teo_update(struct cpuidle_driver *drv, struct cpuidle_device *dev) } /* - * If the total time span between idle state selection and the "reflect" - * callback is greater than or equal to the sleep length determined at - * the idle state selection time, the wakeup is likely to be due to a - * timer event. - */ - if (cpu_data->time_span_ns >= cpu_data->sleep_length_ns) - measured_us = UINT_MAX; - - /* * Save idle duration values corresponding to non-timer wakeups for * pattern detection. */ |