diff options
| author | Junjie Wu <junjiew@codeaurora.org> | 2015-09-18 18:13:01 -0700 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-23 21:25:28 -0700 |
| commit | 1a76fe2389d173d6bbe4fd12e078205fe0095a4c (patch) | |
| tree | 5376a3ee34ac98595cf7ec925c92ef4acaec893c /Documentation/cpu-freq | |
| parent | a81be0508668e4a7c044cb34e1188abeed28b158 (diff) | |
cpufreq: interactive: Delay evaluation of notification by 1ms
Multiple migrations can happen together within short period if
scheduler is re-arranging a few tasks. In this case, it's only useful
to change frequency at the end of all migrations. Delay handling of
scheduler notification by 1ms.
Change-Id: I9ee7b1e93ce57c28919b5609c40dcde9bd14abed
Suggested-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Diffstat (limited to 'Documentation/cpu-freq')
| -rw-r--r-- | Documentation/cpu-freq/governors.txt | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/cpu-freq/governors.txt b/Documentation/cpu-freq/governors.txt index d39d6818907d..9a92412d44a1 100644 --- a/Documentation/cpu-freq/governors.txt +++ b/Documentation/cpu-freq/governors.txt @@ -312,9 +312,9 @@ information such as migration. If non-zero, this also implies governor sampling windows are aligned across CPUs, with same timer_rate, regardless what align_windows is set to. Default is zero. -use_migration_notif: If non-zero, reevaluate CPU's frequency -immediately after receiving notification from scheduler. If zero, -ignore scheduler notification. Default is zero. +use_migration_notif: If non-zero, schedule hrtimer to fire in 1ms +to reevaluate frequency of notified CPU, unless the hrtimer is already +pending. If zero, ignore scheduler notification. Default is zero. max_freq_hysteresis: Each time freq evaluation chooses policy->max, next max_freq_hysteresis is considered as hysteresis period. During |