diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-12-10 12:30:23 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-12-12 23:22:18 +0100 |
| commit | 04dab58a39d402162a7effe7278df8cd41557252 (patch) | |
| tree | 72ef8dca1e3a3d56bf68ce729678c638dd247e8b /include/linux/cpuidle.h | |
| parent | 9456823c842f346c74265fcd98d008d87a7eb6f5 (diff) | |
cpuidle: Add 'above' and 'below' idle state metrics
Add two new metrics for CPU idle states, "above" and "below", to count
the number of times the given state had been asked for (or entered
from the kernel's perspective), but the observed idle duration turned
out to be too short or too long for it (respectively).
These metrics help to estimate the quality of the CPU idle governor
in use.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/cpuidle.h')
| -rw-r--r-- | include/linux/cpuidle.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index faed7a8977e8..4dff74f48d4b 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -33,6 +33,8 @@ struct cpuidle_state_usage { unsigned long long disable; unsigned long long usage; unsigned long long time; /* in US */ + unsigned long long above; /* Number of times it's been too deep */ + unsigned long long below; /* Number of times it's been too shallow */ #ifdef CONFIG_SUSPEND unsigned long long s2idle_usage; unsigned long long s2idle_time; /* in US */ |