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author | Wyes Karny <wyes.karny@amd.com> | 2023-06-19 22:05:03 +0300 |
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committer | Shuah Khan <skhan@linuxfoundation.org> | 2023-07-19 01:07:01 +0300 |
commit | eb426fc6bdd6b731cbc0900f24a8c5fba10a7631 (patch) | |
tree | 93f62e6d86ad4591a5832b5cceaa1bd2ec9e7ad6 /tools/power/cpupower/utils/helpers/misc.c | |
parent | df8776b03689987e3239f3c010b6dc6ab4185d30 (diff) | |
download | linux-eb426fc6bdd6b731cbc0900f24a8c5fba10a7631.tar.xz |
cpupower: Add turbo-boost support in cpupower
If boost sysfs (/sys/devices/system/cpu/cpufreq/boost) file is present
turbo-boost is feature is supported in the hardware. By default this
feature should be enabled. But to disable/enable it write to the sysfs
file. Use the same to control this feature via cpupower.
To enable:
cpupower set --turbo-boost 1
To disable:
cpupower set --turbo-boost 0
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/power/cpupower/utils/helpers/misc.c')
-rw-r--r-- | tools/power/cpupower/utils/helpers/misc.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/power/cpupower/utils/helpers/misc.c b/tools/power/cpupower/utils/helpers/misc.c index 075c136a100c..76e461ff4f74 100644 --- a/tools/power/cpupower/utils/helpers/misc.c +++ b/tools/power/cpupower/utils/helpers/misc.c @@ -124,6 +124,24 @@ int cpupower_set_amd_pstate_mode(char *mode) return 0; } +int cpupower_set_turbo_boost(int turbo_boost) +{ + char path[SYSFS_PATH_MAX]; + char linebuf[2] = {}; + + snprintf(path, sizeof(path), PATH_TO_CPU "cpufreq/boost"); + + if (!is_valid_path(path)) + return -1; + + snprintf(linebuf, sizeof(linebuf), "%d", turbo_boost); + + if (cpupower_write_sysfs(path, linebuf, 2) <= 0) + return -1; + + return 0; +} + bool cpupower_amd_pstate_enabled(void) { char *driver = cpufreq_get_driver(0); |