diff mbox series

[v2,12/13] cpufreq/amd-pstate: Disable preferred cores on designs with workload classification

Message ID 20241010193705.10362-13-mario.limonciello@amd.com (mailing list archive)
State Superseded, archived
Headers show
Series Add support for AMD hardware feedback interface | expand

Commit Message

Mario Limonciello Oct. 10, 2024, 7:37 p.m. UTC 
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.

Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
 drivers/cpufreq/amd-pstate.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 30415c30d8b4..0751579ef06c 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -780,6 +780,10 @@  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 (boot_cpu_has(X86_FEATURE_WORKLOAD_CLASS) &&
+	    IS_ENABLED(CONFIG_AMD_HFI))
+		return;
 
 	cpudata->hw_prefcore = true;