diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-12-28 22:26:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-03 10:22:47 +0200 |
| commit | 43bbe1a091e0d125789bf5ba15f297c92cb367fa (patch) | |
| tree | 3234670255d9abb4196ae5eda2a8d8886d3623a0 /drivers/cpufreq | |
| parent | 73b4cbed9176a4009bb3cb9b04e46f8163f6e452 (diff) | |
cpufreq: intel_pstate: Drop ACPI _PSS states table patching
commit e8a0e30b742f76ebd0f3b196973df4bf65d8fbbb upstream.
After making acpi_processor_get_platform_limit() use the "no limit"
value for its frequency QoS request when _PPC returns 0, it is not
necessary to replace the frequency corresponding to the first _PSS
return package entry with the maximum turbo frequency of the given
CPU in intel_pstate_init_acpi_perf_limits() any more, so drop the
code doing that along with the comment explaining it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Hagar Hemdan <hagarhem@amazon.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 2f5063db2f1f..736cb2cfcbb0 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -448,20 +448,6 @@ static void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *policy) (u32) cpu->acpi_perf_data.states[i].control); } - /* - * The _PSS table doesn't contain whole turbo frequency range. - * This just contains +1 MHZ above the max non turbo frequency, - * with control value corresponding to max turbo ratio. But - * when cpufreq set policy is called, it will call with this - * max frequency, which will cause a reduced performance as - * this driver uses real max turbo frequency as the max - * frequency. So correct this frequency in _PSS table to - * correct max turbo frequency based on the turbo state. - * Also need to convert to MHz as _PSS freq is in MHz. - */ - if (!global.turbo_disabled) - cpu->acpi_perf_data.states[0].core_frequency = - policy->cpuinfo.max_freq / 1000; cpu->valid_pss_table = true; pr_debug("_PPC limits will be enforced\n"); |