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| author | Gautham R. Shenoy <[email protected]> | 2024-08-28 15:40:35 +0530 |
|---|---|---|
| committer | Mario Limonciello <[email protected]> | 2024-08-28 10:15:00 -0500 |
| commit | 9c68a3b03e8109f3917fd35f39043499897d4a79 (patch) | |
| tree | 61600e3d99b7a569305fd6e94f7f808e00bfccca /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 9983a9cd4d429dc9ca01770083c4c1f366214b65 (diff) | |
cpufreq/amd-pstate: Remove warning for X86_FEATURE_CPPC on certain Zen models
commit bff7d13c190a ("cpufreq: amd-pstate: add debug message while
CPPC is supported and disabled by SBIOS") issues a warning on plaforms
where the X86_FEATURE_CPPC is expected to be enabled, but is not due
to it being disabled in the BIOS.
This feature bit corresponds to CPUID 0x80000008.ebx[27] which is a
reserved bit on the Zen1 processors and a reserved bit on Zen2 based
models 0x70-0x7F, and is expected to be cleared on these
platforms. Thus printing the warning message for these models when
X86_FEATURE_CPPC is unavailable is incorrect. Fix this.
Modify some of the comments, and use switch-case for model range
checking for improved readability while at it.
Fixes: bff7d13c190a ("cpufreq: amd-pstate: add debug message while CPPC is supported and disabled by SBIOS")
Cc: Xiaojian Du <[email protected]>
Reported-by: David Wang <[email protected]>
Closes: https://lore.kernel.org/lkml/[email protected]/
Signed-off-by: Gautham R. Shenoy <[email protected]>
Acked-by: Mario Limonciello <[email protected]>
Signed-off-by: Mario Limonciello <[email protected]>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions