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cpufreq/amd-pstate: Pass min/max_limit_perf as min/max_perf to amd_pstate_update

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Currently, amd_pstate_update_freq passes the hardware perf limits as
min/max_perf to amd_pstate_update, which eventually gets programmed into
the min/max_perf fields of the CPPC_REQ register.

Instead pass the effective perf limits i.e. min/max_limit_perf values to
amd_pstate_update as min/max_perf.

Signed-off-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Link: https://lore.kernel.org/r/20250205112523.201101-6-dhananjay.ugwekar@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
This commit is contained in:
Dhananjay Ugwekar 2025-02-05 11:25:16 +00:00 committed by Mario Limonciello
parent 932da64896
commit e9869c836b
1 changed files with 4 additions and 5 deletions
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9
drivers/cpufreq/amd-pstate.c
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@ -615,7 +615,7 @@ static int amd_pstate_update_freq(struct cpufreq_policy *policy,
{
struct cpufreq_freqs freqs;
struct amd_cpudata *cpudata = policy->driver_data;
unsigned long max_perf, min_perf, des_perf, cap_perf;
unsigned long des_perf, cap_perf;
if (!cpudata->max_freq)
return -ENODEV;
@ -624,8 +624,6 @@ static int amd_pstate_update_freq(struct cpufreq_policy *policy,
amd_pstate_update_min_max_limit(policy);
cap_perf = READ_ONCE(cpudata->highest_perf);
min_perf = READ_ONCE(cpudata->lowest_perf);
max_perf = cap_perf;
freqs.old = policy->cur;
freqs.new = target_freq;
@ -642,8 +640,9 @@ static int amd_pstate_update_freq(struct cpufreq_policy *policy,
if (!fast_switch)
cpufreq_freq_transition_begin(policy, &freqs);
amd_pstate_update(cpudata, min_perf, des_perf,
max_perf, fast_switch, policy->governor->flags);
amd_pstate_update(cpudata, cpudata->min_limit_perf, des_perf,
cpudata->max_limit_perf, fast_switch,
policy->governor->flags);
if (!fast_switch)
cpufreq_freq_transition_end(policy, &freqs, false);