diff options
Diffstat (limited to 'tests/i915/perf_pmu.c')
| -rw-r--r-- | tests/i915/perf_pmu.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/tests/i915/perf_pmu.c b/tests/i915/perf_pmu.c index c2b186d3..da06a28b 100644 --- a/tests/i915/perf_pmu.c +++ b/tests/i915/perf_pmu.c @@ -883,6 +883,43 @@ sema_busy(int gem_fd, close(fd[1]); } +static void test_awake(int i915) +{ + const struct intel_execution_engine2 *e; + unsigned long slept; + uint64_t val; + int fd; + + fd = perf_i915_open(i915, I915_PMU_SOFTWARE_GT_AWAKE_TIME); + igt_skip_on(fd < 0); + + /* Check that each engine is captured by the GT wakeref */ + __for_each_physical_engine(i915, e) { + igt_spin_new(i915, .engine = e->flags); + + val = pmu_read_single(fd); + slept = measured_usleep(batch_duration_ns / 1000); + val = pmu_read_single(fd) - val; + + gem_quiescent_gpu(i915); + assert_within_epsilon(val, slept, tolerance); + } + + /* And that the total GT wakeref matches walltime not summation */ + __for_each_physical_engine(i915, e) + igt_spin_new(i915, .engine = e->flags); + + val = pmu_read_single(fd); + slept = measured_usleep(batch_duration_ns / 1000); + val = pmu_read_single(fd) - val; + + gem_quiescent_gpu(i915); + assert_within_epsilon(val, slept, tolerance); + + igt_free_spins(i915); + close(fd); +} + #define MI_WAIT_FOR_PIPE_C_VBLANK (1<<21) #define MI_WAIT_FOR_PIPE_B_VBLANK (1<<11) #define MI_WAIT_FOR_PIPE_A_VBLANK (1<<3) @@ -2251,6 +2288,12 @@ igt_main test_rc6(fd, TEST_S3); /** + * Test GT wakeref tracking (similar to RC0, opposite of RC6) + */ + igt_subtest("gt-awake") + test_awake(fd); + + /** * Check render nodes are counted. */ igt_subtest_group { |