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path: root/drivers/cpufreq/amd-pstate.c
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Diffstat (limited to 'drivers/cpufreq/amd-pstate.c')
-rw-r--r--drivers/cpufreq/amd-pstate.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index bbc27ef9edf7..b4c79fde1979 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -1554,13 +1554,15 @@ static void amd_pstate_epp_cpu_exit(struct cpufreq_policy *policy)
pr_debug("CPU %d exiting\n", policy->cpu);
}
-static int amd_pstate_epp_update_limit(struct cpufreq_policy *policy)
+static int amd_pstate_epp_update_limit(struct cpufreq_policy *policy, bool policy_change)
{
struct amd_cpudata *cpudata = policy->driver_data;
union perf_cached perf;
u8 epp;
- if (policy->min != cpudata->min_limit_freq || policy->max != cpudata->max_limit_freq)
+ if (policy_change ||
+ policy->min != cpudata->min_limit_freq ||
+ policy->max != cpudata->max_limit_freq)
amd_pstate_update_min_max_limit(policy);
if (cpudata->policy == CPUFREQ_POLICY_PERFORMANCE)
@@ -1584,7 +1586,7 @@ static int amd_pstate_epp_set_policy(struct cpufreq_policy *policy)
cpudata->policy = policy->policy;
- ret = amd_pstate_epp_update_limit(policy);
+ ret = amd_pstate_epp_update_limit(policy, true);
if (ret)
return ret;
@@ -1626,13 +1628,14 @@ static int amd_pstate_suspend(struct cpufreq_policy *policy)
* min_perf value across kexec reboots. If this CPU is just resumed back without kexec,
* the limits, epp and desired perf will get reset to the cached values in cpudata struct
*/
- ret = amd_pstate_update_perf(policy, perf.bios_min_perf, 0U, 0U, 0U, false);
+ ret = amd_pstate_update_perf(policy, perf.bios_min_perf,
+ FIELD_GET(AMD_CPPC_DES_PERF_MASK, cpudata->cppc_req_cached),
+ FIELD_GET(AMD_CPPC_MAX_PERF_MASK, cpudata->cppc_req_cached),
+ FIELD_GET(AMD_CPPC_EPP_PERF_MASK, cpudata->cppc_req_cached),
+ false);
if (ret)
return ret;
- /* invalidate to ensure it's rewritten during resume */
- cpudata->cppc_req_cached = 0;
-
/* set this flag to avoid setting core offline*/
cpudata->suspended = true;
@@ -1658,7 +1661,7 @@ static int amd_pstate_epp_resume(struct cpufreq_policy *policy)
int ret;
/* enable amd pstate from suspend state*/
- ret = amd_pstate_epp_update_limit(policy);
+ ret = amd_pstate_epp_update_limit(policy, false);
if (ret)
return ret;