Messages in this thread Patch in this message | | | From | Perry Yuan <> | Subject | [PATCH 07/12] cpufreq: amd_pstate: map desired perf into pstate scope for powersave governor | Date | Thu, 7 Jul 2022 13:00:22 -0400 |
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The patch will fix the invalid desired perf value for powersave governor. This issue is found when testing on one AMD EPYC system, the actual des_perf is smaller than the min_perf value, that is invalid value. because the min_perf is the lowest_perf system can support in idle state.
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com> --- drivers/cpufreq/amd-pstate.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 7c51f4125263..154eed849f38 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -317,6 +317,7 @@ static int amd_pstate_target(struct cpufreq_policy *policy, des_perf = DIV_ROUND_CLOSEST(target_freq * cap_perf, cpudata->max_freq); + des_perf = clamp_t(unsigned long, des_perf, min_perf, max_perf); cpufreq_freq_transition_begin(policy, &freqs); amd_pstate_update(cpudata, min_perf, des_perf, max_perf, false); -- 2.25.1
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