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| author | Stratos Karafotis | 2013-03-05 23:06:29 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki | 2013-04-01 01:11:35 +0200 |
| commit | 7af1c0568d33339318c6710381921a3a3d40eebb (patch) | |
| tree | 4ae1c0bf763b140695e8efa0174e8453f9986ca7 /Documentation/cpu-freq | |
| parent | cpufreq: governors: Calculate iowait time only when necessary (diff) | |
| download | kernel-qcow2-linux-7af1c0568d33339318c6710381921a3a3d40eebb.tar.gz kernel-qcow2-linux-7af1c0568d33339318c6710381921a3a3d40eebb.tar.xz kernel-qcow2-linux-7af1c0568d33339318c6710381921a3a3d40eebb.zip | |
cpufreq: conservative: Fix sampling_down_factor functionality
sampling_down_factor tunable is unused since commit
8e677ce83bf41ba9c74e5b6d9ee60b07d4e5ed93 (4 years ago).
This patch restores the original functionality and documents the
tunable.
Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/cpu-freq')
| -rw-r--r-- | Documentation/cpu-freq/governors.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/cpu-freq/governors.txt b/Documentation/cpu-freq/governors.txt index c7a2eb8450c2..4dfed30b7fda 100644 --- a/Documentation/cpu-freq/governors.txt +++ b/Documentation/cpu-freq/governors.txt @@ -191,6 +191,12 @@ governor but for the opposite direction. For example when set to its default value of '20' it means that if the CPU usage needs to be below 20% between samples to have the frequency decreased. +sampling_down_factor: similar functionality as in "ondemand" governor. +But in "conservative", it controls the rate at which the kernel makes +a decision on when to decrease the frequency while running in any +speed. Load for frequency increase is still evaluated every +sampling rate. + 3. The Governor Interface in the CPUfreq Core ============================================= |