cpufreq: intel_pstate: Remove PID debugfs when not used

When target state is calculated using get_target_pstate_use_cpu_load(), PID controller is not used, hence it has no effect on performance. So don't present debugfs entries to tune PID controller. Signed-off-by: Srinivas Pandruvada <[email protected]> Signed-off-by: Rafael J. Wysocki <[email protected]>
zuai · Oct 21, 2016 · 185d824 · 185d824
1 parent 1d29815
commit 185d824
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
@@ -636,8 +636,10 @@ static void __init intel_pstate_debug_expose_params(void)
 	struct dentry *debugfs_parent;
 	int i = 0;
 
-	if (hwp_active)
+	if (hwp_active ||
+	    pstate_funcs.get_target_pstate == get_target_pstate_use_cpu_load)
 		return;
+
 	debugfs_parent = debugfs_create_dir("pstate_snb", NULL);
 	if (IS_ERR_OR_NULL(debugfs_parent))
 		return;