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cpufreq: trace frequency limits change

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systrace used for tracing for Android systems has carried a patch for
many years in the Android tree that traces when the cpufreq limits
change.  With the help of this information, systrace can know when the
policy limits change and can visually display the data. Lets add
upstream support for the same.

Signed-off-by: Ruchi Kandoi <[email protected]>
Signed-off-by: Joel Fernandes (Google) <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Acked-by: Steven Rostedt (VMware) <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Ruchi Kandoi 2018-07-24 10:35:44 -07:00 • committed by Rafael J. Wysocki
commit 601b218568
3 changed files with 27 additions and 0 deletions
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1
Documentation/trace/events-power.rst
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@ -27,6 +27,7 @@ cpufreq.
cpu_idle "state=%lu cpu_id=%lu"
cpu_frequency "state=%lu cpu_id=%lu"
cpu_frequency_limits "min=%lu max=%lu cpu_id=%lu"
A suspend event is used to indicate the system going in and out of the
suspend mode: