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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-05-12 16:15:48 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-05-21 18:44:55 +0200 |
| commit | c3d175e4852bfdfd1e4021dff8715fc407dedd98 (patch) | |
| tree | ce38a274cfc675304fedc4c5bea5d6cb751ebb54 /drivers/cpufreq/intel_pstate.c | |
| parent | d07f6ca923ea0927a1024dfccafc5b53b61cfecc (diff) | |
| download | linux-c3d175e4852bfdfd1e4021dff8715fc407dedd98.tar.gz | |
cpufreq: intel_pstate: hybrid: Avoid exposing two global attributes
The turbo_pct and num_pstates sysfs attributes represent CPU properties that may be different for differenty types of CPUs in a hybrid processor, so avoid exposing them in that case. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/intel_pstate.c')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 0e69dffd5a76..45f59e2827fe 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -1365,8 +1365,6 @@ define_one_global_rw(energy_efficiency); static struct attribute *intel_pstate_attributes[] = { &status.attr, &no_turbo.attr, - &turbo_pct.attr, - &num_pstates.attr, NULL }; @@ -1391,6 +1389,14 @@ static void __init intel_pstate_sysfs_expose_params(void) if (WARN_ON(rc)) return; + if (!boot_cpu_has(X86_FEATURE_HYBRID_CPU)) { + rc = sysfs_create_file(intel_pstate_kobject, &turbo_pct.attr); + WARN_ON(rc); + + rc = sysfs_create_file(intel_pstate_kobject, &num_pstates.attr); + WARN_ON(rc); + } + /* * If per cpu limits are enforced there are no global limits, so * return without creating max/min_perf_pct attributes @@ -1417,6 +1423,11 @@ static void __init intel_pstate_sysfs_remove(void) sysfs_remove_group(intel_pstate_kobject, &intel_pstate_attr_group); + if (!boot_cpu_has(X86_FEATURE_HYBRID_CPU)) { + sysfs_remove_file(intel_pstate_kobject, &num_pstates.attr); + sysfs_remove_file(intel_pstate_kobject, &turbo_pct.attr); + } + if (!per_cpu_limits) { sysfs_remove_file(intel_pstate_kobject, &max_perf_pct.attr); sysfs_remove_file(intel_pstate_kobject, &min_perf_pct.attr); |