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| author | Francisco Jerez <currojerez@riseup.net> | 2020-09-01 06:02:50 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-09-01 22:15:00 +0300 |
| commit | eacc9c5a927e474c173a5d53dd7fb8e306511768 (patch) | |
| tree | 52ca3f6613f7843c004f2227ac70eca954b52d45 /drivers/cpufreq/powernow-k8.c | |
| parent | 55671ea3257ac596abd817c4031a996b2867e586 (diff) | |
| download | linux-eacc9c5a927e474c173a5d53dd7fb8e306511768.tar.xz | |
cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled
This fixes the behavior of the scaling_max_freq and scaling_min_freq
sysfs files in systems which had turbo disabled by the BIOS.
Caleb noticed that the HWP is programmed to operate in the wrong
P-state range on his system when the CPUFREQ policy min/max frequency
is set via sysfs. This seems to be because in his system
intel_pstate_get_hwp_max() is returning the maximum turbo P-state even
though turbo was disabled by the BIOS, which causes intel_pstate to
scale kHz frequencies incorrectly e.g. setting the maximum turbo
frequency whenever the maximum guaranteed frequency is requested via
sysfs.
Tested-by: Caleb Callaway <caleb.callaway@intel.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
[ rjw: Minor subject edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/powernow-k8.c')
0 files changed, 0 insertions, 0 deletions