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| author | Gautham R. Shenoy <gautham.shenoy@amd.com> | 2024-10-21 15:48:35 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-05 14:01:18 +0100 |
| commit | d193e3cbb02b58bd6f706dbbd5552cc79c7fd843 (patch) | |
| tree | 72ad13c3ba6ef157ef964519f1f4862b45b45652 /drivers/crypto | |
| parent | 50f0ec2f88a7990e3c7f40cbc096dde1b981d4df (diff) | |
| download | linux-d193e3cbb02b58bd6f706dbbd5552cc79c7fd843.tar.gz linux-d193e3cbb02b58bd6f706dbbd5552cc79c7fd843.tar.bz2 linux-d193e3cbb02b58bd6f706dbbd5552cc79c7fd843.zip | |
amd-pstate: Set min_perf to nominal_perf for active mode performance gov
[ Upstream commit 0c411b39e4f4ce8861301fa201cb4f817751311e ]
The amd-pstate driver sets CPPC_REQ.min_perf to CPPC_REQ.max_perf when
in active mode with performance governor. Typically CPPC_REQ.max_perf
is set to CPPC.highest_perf. This causes frequency throttling on
power-limited platforms which causes performance regressions on
certain classes of workloads.
Hence, set the CPPC_REQ.min_perf to the CPPC.nominal_perf or
CPPC_REQ.max_perf, whichever is lower of the two.
Fixes: ffa5096a7c33 ("cpufreq: amd-pstate: implement Pstate EPP support for the AMD processors")
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20241021101836.9047-2-gautham.shenoy@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/crypto')
0 files changed, 0 insertions, 0 deletions