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| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-06-20 20:24:33 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-06-21 19:44:56 +0300 |
| commit | c88ad30e3f861c7be4e3b4995554e2b0754059b7 (patch) | |
| tree | 0ae7ddcef8bdbcc0be8583ce6506ce7e1fec1752 /include/linux/amd-pstate.h | |
| parent | 32f80b9adfdb43f8af248596724f59dde938a190 (diff) | |
| download | linux-c88ad30e3f861c7be4e3b4995554e2b0754059b7.tar.xz | |
cpufreq: amd-pstate: Add a kernel config option to set default mode
Users are having more success with amd-pstate since the introduction
of EPP and Guided modes. To expose the driver to more users by default
introduce a kernel configuration option for setting the default mode.
Users can use an integer to map out which default mode they want to use
in lieu of a kernel command line option.
This will default to EPP, but only if:
1) The CPU supports an MSR.
2) The system profile is identified
3) The system profile is identified as a non-server by the FADT.
Link: https://gitlab.freedesktop.org/hadess/power-profiles-daemon/-/merge_requests/121
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Co-developed-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/amd-pstate.h')
| -rw-r--r-- | include/linux/amd-pstate.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h index c10ebf8c42e6..446394f84606 100644 --- a/include/linux/amd-pstate.h +++ b/include/linux/amd-pstate.h @@ -94,7 +94,8 @@ struct amd_cpudata { * enum amd_pstate_mode - driver working mode of amd pstate */ enum amd_pstate_mode { - AMD_PSTATE_DISABLE = 0, + AMD_PSTATE_UNDEFINED = 0, + AMD_PSTATE_DISABLE, AMD_PSTATE_PASSIVE, AMD_PSTATE_ACTIVE, AMD_PSTATE_GUIDED, @@ -102,6 +103,7 @@ enum amd_pstate_mode { }; static const char * const amd_pstate_mode_string[] = { + [AMD_PSTATE_UNDEFINED] = "undefined", [AMD_PSTATE_DISABLE] = "disable", [AMD_PSTATE_PASSIVE] = "passive", [AMD_PSTATE_ACTIVE] = "active", |