| Message ID | 20250419025504.9760-3-ricardo.neri-calderon@linux.intel.com |
|---|---|
| State | New |
| Headers | show |
| Series | topology/sysfs, cpufreq/intel_pstate: Populate cpu_capacity | expand |
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 4aad79d26c64..c32312843f19 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -952,6 +952,8 @@ 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);
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> --- drivers/cpufreq/intel_pstate.c | 2 ++ 1 file changed, 2 insertions(+)