diff options
| author | Ricardo Neri <ricardo.neri-calderon@linux.intel.com> | 2025-04-18 19:55:04 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2025-05-07 21:56:55 +0200 |
| commit | f1a50492f5bdb024a5eb4d1de6798369dbf93418 (patch) | |
| tree | ee16f8cae8fad5d027772d8cb32a244a4631b6e4 | |
| parent | 6bceea7a1e076ef9d71b20d8dda2f7dc52bd34d2 (diff) | |
cpufreq: intel_pstate: Populate the cpu_capacity sysfs entries
Intel hybrid processors have CPUs of different capacity. Populate the
interface /sys/devices/system/cpu/cpuN/cpu_capacity.
This interface uses the per-CPU variable `cpu_scale`. On x86 this
variable has no other use besides feeding the sysfs entries. Initialize
it when setting CPU capacity for the scheduler and scale-invariant code.
Feed it with arch_scale_cpu_capacity() as it gives capacity normalized
to the interval [0, SCHED_CAPACITY_SCALE].
Signed-off-by: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 25830e5d76e8..531abd637696 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -955,6 +955,8 @@ static void hybrid_set_cpu_capacity(struct cpudata *cpu) cpu->capacity_perf, cpu->pstate.max_pstate_physical); + topology_set_cpu_scale(cpu->cpu, arch_scale_cpu_capacity(cpu->cpu)); + pr_debug("CPU%d: perf = %u, max. perf = %u, base perf = %d\n", cpu->cpu, cpu->capacity_perf, hybrid_max_perf_cpu->capacity_perf, cpu->pstate.max_pstate_physical); |