forked from luck/tmp_suning_uos_patched
cpufreq: intel_pstate: New sysfs entry to control HWP boost
A new attribute is added to intel_pstate sysfs to enable/disable HWP dynamic performance boost. Reported-by: Mel Gorman <mgorman@techsingularity.net> Tested-by: Giovanni Gherdovich <ggherdovich@suse.cz> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
parent
52ccc43142
commit
aaaece3de9
|
@ -1033,6 +1033,30 @@ static ssize_t store_min_perf_pct(struct kobject *a, struct attribute *b,
|
|||
return count;
|
||||
}
|
||||
|
||||
static ssize_t show_hwp_dynamic_boost(struct kobject *kobj,
|
||||
struct attribute *attr, char *buf)
|
||||
{
|
||||
return sprintf(buf, "%u\n", hwp_boost);
|
||||
}
|
||||
|
||||
static ssize_t store_hwp_dynamic_boost(struct kobject *a, struct attribute *b,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
unsigned int input;
|
||||
int ret;
|
||||
|
||||
ret = kstrtouint(buf, 10, &input);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
mutex_lock(&intel_pstate_driver_lock);
|
||||
hwp_boost = !!input;
|
||||
intel_pstate_update_policies();
|
||||
mutex_unlock(&intel_pstate_driver_lock);
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
show_one(max_perf_pct, max_perf_pct);
|
||||
show_one(min_perf_pct, min_perf_pct);
|
||||
|
||||
|
@ -1042,6 +1066,7 @@ define_one_global_rw(max_perf_pct);
|
|||
define_one_global_rw(min_perf_pct);
|
||||
define_one_global_ro(turbo_pct);
|
||||
define_one_global_ro(num_pstates);
|
||||
define_one_global_rw(hwp_dynamic_boost);
|
||||
|
||||
static struct attribute *intel_pstate_attributes[] = {
|
||||
&status.attr,
|
||||
|
@ -1082,6 +1107,11 @@ static void __init intel_pstate_sysfs_expose_params(void)
|
|||
rc = sysfs_create_file(intel_pstate_kobject, &min_perf_pct.attr);
|
||||
WARN_ON(rc);
|
||||
|
||||
if (hwp_active) {
|
||||
rc = sysfs_create_file(intel_pstate_kobject,
|
||||
&hwp_dynamic_boost.attr);
|
||||
WARN_ON(rc);
|
||||
}
|
||||
}
|
||||
/************************** sysfs end ************************/
|
||||
|
||||
|
|
Loading…
Reference in New Issue
Block a user