Commit 3ad7fde1 authored by Huang Rui's avatar Huang Rui Committed by Rafael J. Wysocki
Browse files

cpufreq: amd-pstate: Add AMD P-State performance attributes 



Introduce sysfs attributes to get the different level AMD P-State
performances.

Signed-off-by: default avatarHuang Rui <ray.huang@amd.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent ec4e3326

drivers/cpufreq/amd-pstate.c

+18 −0
Original line number Diff line number Diff line
@@ -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,

};