On designs that have workload classification, it's preferred that
the amd-hfi driver is used to provide hints to the scheduler of
which cores to use instead of the amd-pstate driver.
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@xxxxxxx>
Reviewed-by: Perry Yuan <perry.yuan@xxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
v6:
* Use cpu_feature_enabled
---
drivers/cpufreq/amd-pstate.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 32ddbf37a9f0a..84840666f1d3e 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -780,6 +780,12 @@ static void amd_pstate_init_prefcore(struct amd_cpudata *cpudata)
/* user disabled or not detected */
if (!amd_pstate_prefcore)
return;
+ /* should use amd-hfi instead */
+ if (cpu_feature_enabled(X86_FEATURE_AMD_WORKLOAD_CLASS) &&
+ IS_ENABLED(CONFIG_AMD_HFI)) {
+ amd_pstate_prefcore = false;
+ return;
+ }
cpudata->hw_prefcore = true;
--
2.43.0
