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tools/power x86_energy_perf_policy: EPB access is only via sysfs

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Comprehend that EPB writes are now only via sysfs
by moving it out of the _msr specific path.

No functional change.

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2025-09-19 15:35:07 -04:00
parent 8ef8fa829f
commit f8241f5426
1 changed files with 17 additions and 10 deletions
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27
tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
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@ -1182,19 +1182,23 @@ int enable_hwp_on_cpu(int cpu)
return 0;
}
int update_cpu_epb_sysfs(int cpu)
{
int epb;
epb = get_epb_sysfs(cpu);
set_epb_sysfs(cpu, new_epb);
if (verbose)
printf("cpu%d: ENERGY_PERF_BIAS old: %d new: %d\n",
cpu, epb, (unsigned int) new_epb);
return 0;
}
int update_cpu_msrs(int cpu)
{
unsigned long long msr;
int epb;
if (update_epb) {
epb = get_epb_sysfs(cpu);
set_epb_sysfs(cpu, new_epb);
if (verbose)
printf("cpu%d: ENERGY_PERF_BIAS old: %d new: %d\n",
cpu, epb, (unsigned int) new_epb);
}
if (update_turbo) {
int turbo_is_present_and_disabled;
@ -1584,8 +1588,11 @@ int main(int argc, char **argv)
/* update CPU set */
if (cpu_selected_set) {
if (update_epb)
for_all_cpus_in_set(cpu_setsize, cpu_selected_set, update_cpu_epb_sysfs);
for_all_cpus_in_set(cpu_setsize, cpu_selected_set, update_sysfs);
for_all_cpus_in_set(cpu_setsize, cpu_selected_set, update_cpu_msrs);
} else if (pkg_selected_set)
for_packages(pkg_selected_set, update_hwp_request_pkg_msr);