[PATCH 1/2] tests/pm_rc6_residency: Fix proper residency calculation

deepak.s
2015-02-26T15:43:45Z

From: Deepak S <deepak.s@linux.intel.com>

With current code we are not considering the RC6 residency during sysfs
read. This is causing test to fail due to incorrect residency_accuracy check
This patch consider code time spent for accuracy check

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
---
tests/pm_rc6_residency.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/pm_rc6_residency.c b/tests/pm_rc6_residency.c
index 2658a89..1600ac3 100644
--- a/tests/pm_rc6_residency.c
+++ b/tests/pm_rc6_residency.c
@@ -37,6 +37,7 @@

#define SLEEP_DURATION 3000 // in milliseconds
#define RC6_FUDGE 900 // in milliseconds
+#define CODE_TIME 50 // in microseconfs

static unsigned int readit(const char *path)
{
@@ -102,7 +103,7 @@ static void residency_accuracy(int value[],const char *name_of_rc6_residency)
"the GPU is as idle as possible(ie. no X, "
"running and running no other tests)\n");

- counter = ((double)value[1] - (double)value[0]) /(double) SLEEP_DURATION;
+ counter = ((double)value[1] - (double)value[0]) /(double) (SLEEP_DURATION + CODE_TIME);

if( counter > 0.9 ){
counter_result = counter;