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| author | Perry Yuan <Perry.Yuan@amd.com> | 2023-01-31 12:00:12 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-02-03 23:59:42 +0300 |
| commit | abd61c08ef349af08df0bf587d33f5bde5996a89 (patch) | |
| tree | 3ce89de5eaa25b30f4f31fbe443999d969224bc1 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 50ddd2f7826927e6dc111a43b3a183f53c260fa4 (diff) | |
| download | linux-abd61c08ef349af08df0bf587d33f5bde5996a89.tar.xz | |
cpufreq: amd-pstate: add driver working mode switch support
While amd-pstate driver was loaded with specific driver mode, it will
need to check which mode is enabled for the pstate driver,add this sysfs
entry to show the current status
$ cat /sys/devices/system/cpu/amd-pstate/status
active
Meanwhile, user can switch the pstate driver mode with writing mode
string to sysfs entry as below.
Enable passive mode:
$ sudo bash -c "echo passive > /sys/devices/system/cpu/amd-pstate/status"
Enable active mode (EPP driver mode):
$ sudo bash -c "echo active > /sys/devices/system/cpu/amd-pstate/status"
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions