Create all the spinners before starting the sampler and then measure how long we sleep.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104160 Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursu...@intel.com> --- tests/perf_pmu.c | 43 +++++++++++++++++++++++-------------------- 1 file changed, 23 insertions(+), 20 deletions(-) diff --git a/tests/perf_pmu.c b/tests/perf_pmu.c index 93df4520b..66d1a196d 100644 --- a/tests/perf_pmu.c +++ b/tests/perf_pmu.c @@ -224,52 +224,55 @@ most_busy_check_all(int gem_fd, const struct intel_execution_engine2 *e, const struct intel_execution_engine2 *e_; uint64_t val[num_engines]; int fd[num_engines]; - igt_spin_t *spin[num_engines]; + unsigned long slept; + igt_spin_t *spin = NULL; unsigned int idle_idx, i; gem_require_engine(gem_fd, e->class, e->instance); i = 0; - fd[0] = -1; for_each_engine_class_instance(fd, e_) { if (!gem_has_engine(gem_fd, e_->class, e_->instance)) continue; - fd[i] = open_group(I915_PMU_ENGINE_BUSY(e_->class, - e_->instance), - fd[0]); - if (e == e_) { idle_idx = i; + } else if (spin) { + struct drm_i915_gem_exec_object2 obj = { + .handle = spin->handle + }; + struct drm_i915_gem_execbuffer2 eb = { + .buffer_count = 1, + .buffers_ptr = to_user_pointer(&obj), + .flags = e2ring(gem_fd, e_), + }; + gem_execbuf(gem_fd, &eb); } else { - spin[i] = igt_spin_batch_new(gem_fd, 0, - e2ring(gem_fd, e_), 0); - igt_spin_batch_set_timeout(spin[i], batch_duration_ns); + spin = igt_spin_batch_new(gem_fd, 0, + e2ring(gem_fd, e_), 0); } - i++; + val[i++] = I915_PMU_ENGINE_BUSY(e_->class, e_->instance); } + igt_assert(i == num_engines); - for (i = 0; i < num_engines; i++) { - if (i != idle_idx) - gem_sync(gem_fd, spin[i]->handle); - } + fd[0] = -1; + for (i = 0; i < num_engines; i++) + fd[i] = open_group(val[i], fd[0]); + + slept = measured_usleep(batch_duration_ns / 1000); pmu_read_multi(fd[0], num_engines, val); log_busy(fd[0], num_engines, val); - for (i = 0; i < num_engines; i++) { - if (i != idle_idx) - igt_spin_batch_free(gem_fd, spin[i]); - } + igt_spin_batch_free(gem_fd, spin); close(fd[0]); for (i = 0; i < num_engines; i++) { if (i == idle_idx) assert_within_epsilon(val[i], 0.0f, tolerance); else - assert_within_epsilon(val[i], batch_duration_ns, - tolerance); + assert_within_epsilon(val[i], slept, tolerance); } } -- 2.15.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
