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| author |   Borislav Petkov <bp@suse.de> | 2020-10-15 12:28:58 +0200 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-11-16 17:42:12 +0100 |
| commit | 8113ab20e850491b4144a1a64246f07a2d737a49 (patch) | |
| tree | 84ff07078bbf6e1e3dda50f7f4b7fff8d8336cd1 /tools/power/cpupower/utils/helpers/msr.c | |
| parent | MAINTAINERS: Cleanup SGI-related entries (diff) | |
| download | linux-dev-8113ab20e850491b4144a1a64246f07a2d737a49.tar.xz linux-dev-8113ab20e850491b4144a1a64246f07a2d737a49.zip | |
tools/power/cpupower: Read energy_perf_bias from sysfs
... instead of poking at the MSR. For that, move the accessor functions
to misc.c and add a sysfs-writing function too.
There should be no functional changes resulting from this.
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Cc: Thomas Renninger <trenn@suse.com>
Link: https://lkml.kernel.org/r/20201029190259.3476-2-bp@alien8.de
Diffstat (limited to '')
| -rw-r--r-- | tools/power/cpupower/utils/helpers/msr.c | 28 |
1 files changed, 0 insertions, 28 deletions
diff --git a/tools/power/cpupower/utils/helpers/msr.c b/tools/power/cpupower/utils/helpers/msr.c index ab9950748838..8b0b6be74bb8 100644 --- a/tools/power/cpupower/utils/helpers/msr.c +++ b/tools/power/cpupower/utils/helpers/msr.c @@ -11,7 +11,6 @@ /* Intel specific MSRs */ #define MSR_IA32_PERF_STATUS 0x198 #define MSR_IA32_MISC_ENABLES 0x1a0 -#define MSR_IA32_ENERGY_PERF_BIAS 0x1b0 #define MSR_NEHALEM_TURBO_RATIO_LIMIT 0x1ad /* @@ -73,33 +72,6 @@ int write_msr(int cpu, unsigned int idx, unsigned long long val) return -1; } -int msr_intel_get_perf_bias(unsigned int cpu) -{ - unsigned long long val; - int ret; - - if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) - return -1; - - ret = read_msr(cpu, MSR_IA32_ENERGY_PERF_BIAS, &val); - if (ret) - return ret; - return val; -} - -int msr_intel_set_perf_bias(unsigned int cpu, unsigned int val) -{ - int ret; - - if (!(cpupower_cpu_info.caps & CPUPOWER_CAP_PERF_BIAS)) - return -1; - - ret = write_msr(cpu, MSR_IA32_ENERGY_PERF_BIAS, val); - if (ret) - return ret; - return 0; -} - unsigned long long msr_intel_get_turbo_ratio(unsigned int cpu) { unsigned long long val; |