[UPDATE][PATCH] cpufreq: intel_pstate: Remove PID debugfs when not used

[UPDATE][PATCH] cpufreq: intel_pstate: Remove PID debugfs when not used

[Srinivas Pandruvada]

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 <srinivas.pandruvada@linux.intel.com>
---
update:
Moved the check to the intel_pstate_debug_expose_params() as hwp_active
was already getting checked for not presenting debugfs.

 drivers/cpufreq/intel_pstate.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 52cedd6..165c2d5 100644
--- 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;
-- 
2.7.4