diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2025-06-09 15:05:15 -0500 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2025-07-07 22:33:10 +0200 |
| commit | bfea2b3b4f2346510ec45a0c22450e1564f48f88 (patch) | |
| tree | d581fd0ce544d111e7c44e824e77cb793c653ee3 | |
| parent | 9e8f6bf782a96d45a25ef9bc17db06bafb6b3e21 (diff) | |
cpufreq/amd-pstate: Disable preferred cores on designs with workload classification
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>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Perry Yuan <perry.yuan@amd.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/20250609200518.3616080-11-superm1@kernel.org
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index f3477ab37742..bbc27ef9edf7 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -826,6 +826,13 @@ static void amd_pstate_init_prefcore(struct amd_cpudata *cpudata) 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; /* Priorities must be initialized before ITMT support can be toggled on. */ |