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| author | Gautham R. Shenoy <gautham.shenoy@amd.com> | 2024-10-21 13:18:35 +0300 |
|---|---|---|
| committer | Mario Limonciello <mario.limonciello@amd.com> | 2024-10-28 22:54:35 +0300 |
| commit | 0c411b39e4f4ce8861301fa201cb4f817751311e (patch) | |
| tree | 20f0cd021621b68f3c4a1a0f73530be8c66591da /tools/perf/scripts/python/gecko.py | |
| parent | b427ac4084753d7c62ef797bed7f30203f0ef5fb (diff) | |
| download | linux-0c411b39e4f4ce8861301fa201cb4f817751311e.tar.xz | |
amd-pstate: Set min_perf to nominal_perf for active mode performance gov
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>
Diffstat (limited to 'tools/perf/scripts/python/gecko.py')
0 files changed, 0 insertions, 0 deletions