diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2024-12-09 12:02:14 -0600 |
|---|---|---|
| committer | Mario Limonciello <mario.limonciello@amd.com> | 2025-03-06 13:01:25 -0600 |
| commit | 1905fac6f9e08e34135e089704a0733ce711eb83 (patch) | |
| tree | 4f2aa112eec5d6ad06406b6776d82c8a6069e2c1 | |
| parent | 77fbea69b0ffad0e46c7018d07e04b6628482e14 (diff) | |
cpufreq/amd-pstate: Update cppc_req_cached for shared mem EPP writes
On EPP only writes update the cached variable so that the min/max
performance controls don't need to be updated again.
Reviewed-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index e5db731618e8..df42a2d22225 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -336,6 +336,7 @@ static int shmem_set_epp(struct cpufreq_policy *policy, u8 epp) { struct amd_cpudata *cpudata = policy->driver_data; struct cppc_perf_ctrls perf_ctrls; + u64 value; int ret; if (trace_amd_pstate_epp_perf_enabled()) { @@ -362,6 +363,11 @@ static int shmem_set_epp(struct cpufreq_policy *policy, u8 epp) } WRITE_ONCE(cpudata->epp_cached, epp); + value = READ_ONCE(cpudata->cppc_req_cached); + value &= ~AMD_CPPC_EPP_PERF_MASK; + value |= FIELD_PREP(AMD_CPPC_EPP_PERF_MASK, epp); + WRITE_ONCE(cpudata->cppc_req_cached, value); + return ret; } |