Add a new subtest focused on exercising interaction between perf open / close operations, which replace active barriers with perf requests, and concurrent barrier preallocate / acquire operations performed during context first pin / last unpin.
References: https://gitlab.freedesktop.org/drm/intel/-/issues/6333 Signed-off-by: Janusz Krzysztofik <janusz.krzyszto...@linux.intel.com> Cc: Chris Wilson <chris.p.wil...@linux.intel.com> --- tests/i915/perf.c | 41 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) diff --git a/tests/i915/perf.c b/tests/i915/perf.c index e33cacc443..11a3ec21ab 100644 --- a/tests/i915/perf.c +++ b/tests/i915/perf.c @@ -39,6 +39,7 @@ #include <math.h> #include "i915/gem.h" +#include "i915/gem_create.h" #include "i915/perf.h" #include "igt.h" #include "igt_perf.h" @@ -4885,7 +4886,27 @@ test_whitelisted_registers_userspace_config(void) i915_perf_remove_config(drm_fd, config_id); } -static void test_open_race(const struct intel_execution_engine2 *e, int timeout) +static void gem_exec_nop(int i915, const struct intel_execution_engine2 *e) +{ + const uint32_t bbe = MI_BATCH_BUFFER_END; + struct drm_i915_gem_exec_object2 obj = { }; + struct drm_i915_gem_execbuffer2 execbuf = { + .buffers_ptr = to_user_pointer(&obj), + .buffer_count = 1, + }; + + obj.handle = gem_create(i915, 4096); + gem_write(i915, obj.handle, 0, &bbe, sizeof(bbe)); + + execbuf.flags = e->flags; + gem_execbuf(i915, &execbuf); + + gem_sync(i915, obj.handle); + gem_close(i915, obj.handle); +} + +static void test_open_race(const struct intel_execution_engine2 *e, int timeout, + bool use_spin) { int *done; @@ -4926,6 +4947,12 @@ static void test_open_race(const struct intel_execution_engine2 *e, int timeout) ctx = gem_context_create_for_engine(i915, e->class, e->instance); gem_context_set_persistence(i915, ctx, persistence); + if (!use_spin) { + gem_exec_nop(i915, e); + gem_context_destroy(i915, ctx); + continue; + } + spin = __igt_spin_new(i915, ctx, .ahnd = ahnd); for (int i = random() % 7; i--; ) { if (random() & 1) { @@ -5330,7 +5357,17 @@ igt_main for_each_physical_engine(drm_fd, e) if (e->class == I915_ENGINE_CLASS_RENDER) igt_dynamic_f("%s", e->name) - test_open_race(e, 5); + test_open_race(e, 5, true); + } + + igt_describe("Exercise perf open/close against intensive barrier preallocate/acquire"); + igt_subtest_with_dynamic("barrier-race") { + const struct intel_execution_engine2 *e; + + for_each_physical_engine(drm_fd, e) + if (e->class == I915_ENGINE_CLASS_RENDER) + igt_dynamic_f("%s", e->name) + test_open_race(e, 5, false); } igt_fixture { -- 2.25.1
