RC6 should work before suspend, and continue to increment while idle
after suspend. Should.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
tests/i915/perf_pmu.c | 36 +++++++++++++++++++++++++++++++-----
1 file changed, 31 insertions(+), 5 deletions(-)
diff --git a/tests/i915/perf_pmu.c b/tests/i915/perf_pmu.c
index cb7273142..29119b236 100644
--- a/tests/i915/perf_pmu.c
+++ b/tests/i915/perf_pmu.c
@@ -170,6 +170,7 @@ static unsigned int measured_usleep(unsigned int usec)
#define TEST_RUNTIME_PM (8)
#define FLAG_LONG (16)
#define FLAG_HANG (32)
+#define TEST_S3 (64)
static igt_spin_t * __spin_poll(int fd, uint32_t ctx,
const struct intel_execution_engine2 *e)
@@ -1639,12 +1640,34 @@ test_rc6(int gem_fd, unsigned int flags)
igt_require(wait_for_rc6(fd));
/* While idle check full RC6. */
- prev = __pmu_read_single(fd, &ts[0]);
- slept = measured_usleep(duration_ns / 1000);
- idle = __pmu_read_single(fd, &ts[1]);
- igt_debug("slept=%lu perf=%"PRIu64"\n", slept, ts[1] - ts[0]);
+ for (int pass = 0; pass < 3; pass++) {
+ prev = __pmu_read_single(fd, &ts[0]);
+ slept = measured_usleep(duration_ns / 1000);
+ idle = __pmu_read_single(fd, &ts[1]);
+
+ igt_debug("slept=%lu perf=%"PRIu64"\n", slept, ts[1] - ts[0]);
+ assert_within_epsilon(idle - prev, ts[1] - ts[0], tolerance);
+ }
+
+ if (flags & TEST_S3) {
+ prev = __pmu_read_single(fd, &ts[0]);
+ igt_system_suspend_autoresume(SUSPEND_STATE_MEM,
+ SUSPEND_TEST_NONE);
+ idle = __pmu_read_single(fd, &ts[1]);
+ igt_debug("suspend=%"PRIu64"\n", ts[1] - ts[0]);
+ //assert_within_epsilon(idle - prev, ts[1] - ts[0], tolerance);
+ }
- assert_within_epsilon(idle - prev, ts[1] - ts[0], tolerance);
+ igt_assert(wait_for_rc6(fd));
+
+ for (int pass = 0; pass < 3; pass++) {
+ prev = __pmu_read_single(fd, &ts[0]);
+ slept = measured_usleep(duration_ns / 1000);
+ idle = __pmu_read_single(fd, &ts[1]);
+
+ igt_debug("slept=%lu perf=%"PRIu64"\n", slept, ts[1] - ts[0]);
+ assert_within_epsilon(idle - prev, ts[1] - ts[0], tolerance);
+ }
/* Wake up device and check no RC6. */
fw = igt_open_forcewake_handle(gem_fd);
@@ -2245,6 +2268,9 @@ igt_main
igt_subtest("rc6-runtime-pm-long")
test_rc6(fd, TEST_RUNTIME_PM | FLAG_LONG);
+ igt_subtest("rc6-suspend")
+ test_rc6(fd, TEST_S3);
+
/**
* Check render nodes are counted.
*/
--
2.29.2
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