diff options
Diffstat (limited to 'drivers/cpufreq/intel_pstate.c')
| -rw-r--r-- | drivers/cpufreq/intel_pstate.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index cde1a4e..36953b5 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -168,6 +168,7 @@ struct _pid { * struct cpudata - Per CPU instance data storage * @cpu: CPU number for this instance data * @update_util: CPUFreq utility callback information + * @update_util_set: CPUFreq utility callback is set * @pstate: Stores P state limits for this CPU * @vid: Stores VID limits for this CPU * @pid: Stores PID parameters for this CPU @@ -187,6 +188,7 @@ struct cpudata { int cpu; struct update_util_data update_util; + bool update_util_set; struct pstate_data pstate; struct vid_data vid; @@ -1417,11 +1419,18 @@ static void intel_pstate_set_update_util_hook(unsigned int cpu_num) cpu->sample.time = 0; cpufreq_add_update_util_hook(cpu_num, &cpu->update_util, intel_pstate_update_util); + cpu->update_util_set = true; } static void intel_pstate_clear_update_util_hook(unsigned int cpu) { + struct cpudata *cpu_data = all_cpu_data[cpu]; + + if (!cpu_data->update_util_set) + return; + cpufreq_remove_update_util_hook(cpu); + cpu_data->update_util_set = false; synchronize_sched(); } |