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cpufreq/amd-pstate: Use boost numerator for upper bound of frequencies

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commit 18d9b5227121 ("cpufreq/amd-pstate: Use nominal perf for limits
when boost is disabled") introduced different semantics for min/max limits
based upon whether the user turned off boost from sysfs.

This however is not necessary when the highest perf value is the boost
numerator.

Suggested-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Fixes: 18d9b5227121 ("cpufreq/amd-pstate: Use nominal perf for limits when boost is disabled")
Link: https://lore.kernel.org/r/20241209185248.16301-3-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
This commit is contained in:
Mario Limonciello 2024-12-09 12:52:35 -06:00
parent 50a062a762
commit 2993b29b2a
1 changed files with 5 additions and 8 deletions
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13
drivers/cpufreq/amd-pstate.c
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@ -570,16 +570,13 @@ static int amd_pstate_verify(struct cpufreq_policy_data *policy_data)
static int amd_pstate_update_min_max_limit(struct cpufreq_policy *policy)
{
u32 max_limit_perf, min_limit_perf, lowest_perf, max_perf;
u32 max_limit_perf, min_limit_perf, lowest_perf, max_perf, max_freq;
struct amd_cpudata *cpudata = policy->driver_data;
if (cpudata->boost_supported && !policy->boost_enabled)
max_perf = READ_ONCE(cpudata->nominal_perf);
else
max_perf = READ_ONCE(cpudata->highest_perf);
max_limit_perf = div_u64(policy->max * max_perf, policy->cpuinfo.max_freq);
min_limit_perf = div_u64(policy->min * max_perf, policy->cpuinfo.max_freq);
max_perf = READ_ONCE(cpudata->highest_perf);
max_freq = READ_ONCE(cpudata->max_freq);
max_limit_perf = div_u64(policy->max * max_perf, max_freq);
min_limit_perf = div_u64(policy->min * max_perf, max_freq);
lowest_perf = READ_ONCE(cpudata->lowest_perf);
if (min_limit_perf < lowest_perf)