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| author |   Huang Rui <ray.huang@amd.com> | 2021-12-24 09:05:06 +0800 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-12-30 18:51:40 +0100 |
| commit | 3ad7fde16a04aa70df8a59cba99e225ef9adf42f (patch) | |
| tree | e8a68b9a9d2c2e313cc7877797da70a65244b472 /drivers/cpufreq/amd-pstate.c | |
| parent | cpufreq: amd-pstate: Add AMD P-State frequencies attributes (diff) | |
| download | wireguard-linux-3ad7fde16a04aa70df8a59cba99e225ef9adf42f.tar.xz wireguard-linux-3ad7fde16a04aa70df8a59cba99e225ef9adf42f.zip | |
cpufreq: amd-pstate: Add AMD P-State performance attributes
Introduce sysfs attributes to get the different level AMD P-State
performances.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/amd-pstate.c')
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index dbb7eee11170..40ceb031abf5 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -546,12 +546,30 @@ static ssize_t show_amd_pstate_lowest_nonlinear_freq(struct cpufreq_policy *poli return sprintf(&buf[0], "%u\n", freq); } +/* + * In some of ASICs, the highest_perf is not the one in the _CPC table, so we + * need to expose it to sysfs. + */ +static ssize_t show_amd_pstate_highest_perf(struct cpufreq_policy *policy, + char *buf) +{ + u32 perf; + struct amd_cpudata *cpudata = policy->driver_data; + + perf = READ_ONCE(cpudata->highest_perf); + + return sprintf(&buf[0], "%u\n", perf); +} + cpufreq_freq_attr_ro(amd_pstate_max_freq); cpufreq_freq_attr_ro(amd_pstate_lowest_nonlinear_freq); +cpufreq_freq_attr_ro(amd_pstate_highest_perf); + static struct freq_attr *amd_pstate_attr[] = { &amd_pstate_max_freq, &amd_pstate_lowest_nonlinear_freq, + &amd_pstate_highest_perf, NULL, }; |