From: Jeff McGee <jeff.mcgee@xxxxxxxxx>
The current frequency should reach the minimum frequency within a
reasonable time during idle.
v2: Not using forcewake for this particular subtest per Daniel's
suggestion.
Signed-off-by: Jeff McGee <jeff.mcgee@xxxxxxxxx>
---
tests/pm_rps.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/tests/pm_rps.c b/tests/pm_rps.c
index 7ae0438..24a1ad6 100644
--- a/tests/pm_rps.c
+++ b/tests/pm_rps.c
@@ -206,13 +206,27 @@ static void min_max_config(void (*check)(void))
check();
}
+#define IDLE_WAIT_TIMESTEP_MSEC 100
+#define IDLE_WAIT_TIMEOUT_MSEC 3000
static void idle_check(void)
{
int freqs[NUMFREQ];
-
- read_freqs(freqs);
- dump(freqs);
- checkit(freqs);
+ int wait = 0;
+
+ /* Monitor frequencies until cur settles down to min, which should
+ * happen within the allotted time */
+ do {
+ read_freqs(freqs);
+ dump(freqs);
+ checkit(freqs);
+ if (freqs[CUR] == freqs[MIN])
+ break;
+ usleep(1000 * IDLE_WAIT_TIMESTEP_MSEC);
+ wait += IDLE_WAIT_TIMESTEP_MSEC;
+ } while (wait < IDLE_WAIT_TIMEOUT_MSEC);
+
+ igt_assert(freqs[CUR] == freqs[MIN]);
+ log("Required %d msec to reach cur=min\n", wait);
}
static void pm_rps_exit_handler(int sig)
--
1.8.5.2
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