cpufreq: intel_pstate: Use locking in intel_cpufreq_verify_policy()
Race conditions are possible if intel_cpufreq_verify_policy() is executed in parallel with global limits updates from sysfs, so the invocation of intel_pstate_update_perf_limits() in it should be carried out under intel_pstate_limits_lock. Make that happen. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
This commit is contained in:
parent
aa439248ab
commit
cad3046796
|
@ -2103,8 +2103,12 @@ static int intel_cpufreq_verify_policy(struct cpufreq_policy *policy)
|
|||
if (per_cpu_limits)
|
||||
perf_limits = cpu->perf_limits;
|
||||
|
||||
mutex_lock(&intel_pstate_limits_lock);
|
||||
|
||||
intel_pstate_update_perf_limits(policy, perf_limits);
|
||||
|
||||
mutex_unlock(&intel_pstate_limits_lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue