[igt-dev] [PATCH i-g-t 2/2] tests/i915: Default fence expiry test
Tvrtko Ursulin
tvrtko.ursulin at linux.intel.com
Tue Mar 16 16:18:40 UTC 2021
From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Basic test to check that default fence expiry works as expected.
Relies on the modparam to run quicker.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
tests/Makefile.sources | 3 +
tests/i915/gem_watchdog.c | 376 ++++++++++++++++++++++++++++++++++++++
tests/meson.build | 1 +
3 files changed, 380 insertions(+)
create mode 100644 tests/i915/gem_watchdog.c
diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 4f24fb3a15a5..e992285fedc5 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -463,6 +463,9 @@ gem_userptr_blits_SOURCES = i915/gem_userptr_blits.c
TESTS_progs += gem_wait
gem_wait_SOURCES = i915/gem_wait.c
+TESTS_progs += gem_watchdog
+gem_exec_watchdog_SOURCES = i915/gem_watchdog.c
+
TESTS_progs += gem_workarounds
gem_workarounds_SOURCES = i915/gem_workarounds.c
diff --git a/tests/i915/gem_watchdog.c b/tests/i915/gem_watchdog.c
new file mode 100644
index 000000000000..f86d3d4c7437
--- /dev/null
+++ b/tests/i915/gem_watchdog.c
@@ -0,0 +1,376 @@
+/*
+ * Copyright © 2021 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <unistd.h>
+#include <sched.h>
+
+#include "i915/gem.h"
+#include "igt.h"
+#include "igt_params.h"
+#include "sw_sync.h"
+
+#define EWATCHDOG EINTR
+
+static struct drm_i915_query_engine_info *__engines__;
+
+static int __i915_query(int fd, struct drm_i915_query *q)
+{
+ if (igt_ioctl(fd, DRM_IOCTL_I915_QUERY, q))
+ return -errno;
+ return 0;
+}
+
+static int
+__i915_query_items(int fd, struct drm_i915_query_item *items, uint32_t n_items)
+{
+ struct drm_i915_query q = {
+ .num_items = n_items,
+ .items_ptr = to_user_pointer(items),
+ };
+ return __i915_query(fd, &q);
+}
+
+#define i915_query_items(fd, items, n_items) do { \
+ igt_assert_eq(__i915_query_items(fd, items, n_items), 0); \
+ errno = 0; \
+ } while (0)
+
+static unsigned int default_timeout_wait_s;
+static const unsigned int watchdog_us = 500 * 1000;
+
+static unsigned int
+wait_timeout(int i915, igt_spin_t **spin, unsigned int num_engines,
+ unsigned int wait_us, unsigned int expect)
+{
+ unsigned int count_idle = 0, count_fence = 0, count_started = 0, i;
+ bool started[num_engines];
+
+ memset(started, 0, sizeof(started));
+
+ while (count_started < num_engines) {
+ for (i = 0; i < num_engines; i++) {
+ if (started[i])
+ continue;
+
+ if (igt_spin_has_started(spin[i])) {
+ started[i] = true;
+ count_started++;
+ }
+ }
+ }
+
+ igt_until_timeout(DIV_ROUND_UP(wait_us, USEC_PER_SEC)) {
+ usleep(watchdog_us / 2);
+
+ for (i = 0, count_idle = 0; i < num_engines; i++) {
+ if (!gem_bo_busy(i915, spin[i]->handle))
+ count_idle++;
+ }
+
+ for (i = 0, count_fence = 0; i < num_engines; i++) {
+ if (sync_fence_status(spin[i]->out_fence))
+ count_fence++;
+ }
+
+ if (count_idle == num_engines)
+ break;
+ }
+
+ if (count_idle < expect) {
+ for (i = 0; i < num_engines; i++) {
+ if (gem_bo_busy(i915, spin[i]->handle))
+ igt_warn("Request %u/%u not cancelled!\n",
+ i + 1, num_engines);
+ }
+ }
+
+ if (count_fence < expect) {
+ for (i = 0; i < num_engines; i++) {
+ if (!sync_fence_status(spin[i]->out_fence))
+ igt_warn("Fence %u/%u not timed out!\n",
+ i + 1, num_engines);
+ }
+ }
+
+ igt_assert_eq(count_idle, count_fence);
+
+ return count_fence;
+}
+
+static unsigned int spin_flags(void)
+{
+ return IGT_SPIN_POLL_RUN | IGT_SPIN_FENCE_OUT;
+}
+
+static void physical(int i915)
+{
+ const unsigned int wait_us = default_timeout_wait_s * USEC_PER_SEC;
+ unsigned int num_engines = __engines__->num_engines, i, count;
+ const struct intel_execution_engine2 *e;
+ unsigned int expect = num_engines;
+ igt_spin_t *spin[num_engines];
+
+ i = 0;
+ __for_each_physical_engine(i915, e) {
+ spin[i] = igt_spin_new(i915,
+ .engine = e->flags,
+ .flags = spin_flags());
+ i++;
+ }
+
+ count = wait_timeout(i915, spin, num_engines, wait_us, expect);
+
+ for (i = 0; i < num_engines; i++)
+ igt_spin_free(i915, spin[i]);
+
+ igt_assert_eq(count, expect);
+}
+
+static struct i915_engine_class_instance *
+list_engines(unsigned int class, unsigned int *out)
+{
+ struct i915_engine_class_instance *ci;
+ unsigned int count = 0, size = 64, i;
+
+ ci = malloc(size * sizeof(*ci));
+ igt_assert(ci);
+
+ for (i = 0; i < __engines__->num_engines; i++) {
+ struct drm_i915_engine_info *engine =
+ (struct drm_i915_engine_info *)&__engines__->engines[i];
+
+ if (class != engine->engine.engine_class)
+ continue;
+
+ if (count == size) {
+ size *= 2;
+ ci = realloc(ci, size * sizeof(*ci));
+ igt_assert(ci);
+ }
+
+ ci[count++] = (struct i915_engine_class_instance){
+ .engine_class = class,
+ .engine_instance = engine->engine.engine_instance,
+ };
+ }
+
+ if (!count) {
+ free(ci);
+ ci = NULL;
+ }
+
+ *out = count;
+ return ci;
+}
+
+static size_t sizeof_load_balance(int count)
+{
+ return offsetof(struct i915_context_engines_load_balance,
+ engines[count]);
+}
+
+static size_t sizeof_param_engines(int count)
+{
+ return offsetof(struct i915_context_param_engines,
+ engines[count]);
+}
+
+#define alloca0(sz) ({ size_t sz__ = (sz); memset(alloca(sz__), 0, sz__); })
+
+static int __set_load_balancer(int i915, uint32_t ctx,
+ const struct i915_engine_class_instance *ci,
+ unsigned int count,
+ void *ext)
+{
+ struct i915_context_engines_load_balance *balancer =
+ alloca0(sizeof_load_balance(count));
+ struct i915_context_param_engines *engines =
+ alloca0(sizeof_param_engines(count + 1));
+ struct drm_i915_gem_context_param p = {
+ .ctx_id = ctx,
+ .param = I915_CONTEXT_PARAM_ENGINES,
+ .size = sizeof_param_engines(count + 1),
+ .value = to_user_pointer(engines)
+ };
+
+ balancer->base.name = I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE;
+ balancer->base.next_extension = to_user_pointer(ext);
+
+ igt_assert(count);
+ balancer->num_siblings = count;
+ memcpy(balancer->engines, ci, count * sizeof(*ci));
+
+ engines->extensions = to_user_pointer(balancer);
+ engines->engines[0].engine_class =
+ I915_ENGINE_CLASS_INVALID;
+ engines->engines[0].engine_instance =
+ I915_ENGINE_CLASS_INVALID_NONE;
+ memcpy(engines->engines + 1, ci, count * sizeof(*ci));
+
+ return __gem_context_set_param(i915, &p);
+}
+
+static void set_load_balancer(int i915, uint32_t ctx,
+ const struct i915_engine_class_instance *ci,
+ unsigned int count,
+ void *ext)
+{
+ igt_assert_eq(__set_load_balancer(i915, ctx, ci, count, ext), 0);
+}
+
+static void ctx_set_vm(int i915, uint32_t ctx, uint32_t vm)
+{
+ struct drm_i915_gem_context_param arg = {
+ .param = I915_CONTEXT_PARAM_VM,
+ .ctx_id = ctx,
+ .value = vm,
+ };
+
+ gem_context_set_param(i915, &arg);
+}
+
+static uint32_t ctx_get_vm(int i915, uint32_t ctx)
+{
+ struct drm_i915_gem_context_param arg;
+
+ memset(&arg, 0, sizeof(arg));
+ arg.param = I915_CONTEXT_PARAM_VM;
+ arg.ctx_id = ctx;
+ gem_context_get_param(i915, &arg);
+ igt_assert(arg.value);
+
+ return arg.value;
+}
+
+static void virtual(int i915)
+{
+ const unsigned int wait_us = default_timeout_wait_s * USEC_PER_SEC;
+ unsigned int num_engines = __engines__->num_engines, i, count;
+ igt_spin_t *spin[num_engines];
+ unsigned int expect = num_engines;
+ uint32_t ctx[num_engines];
+ uint32_t vm;
+
+ igt_require(gem_has_execlists(i915));
+
+ igt_debug("%u virtual engines\n", num_engines);
+ igt_require(num_engines);
+
+ i = 0;
+ for (int class = 0; class < 32; class++) {
+ struct i915_engine_class_instance *ci;
+
+ ci = list_engines(class, &count);
+ if (!ci)
+ continue;
+
+ for (int pass = 0; pass < count; pass++) {
+ igt_assert(sizeof(*ci) == sizeof(int));
+ igt_permute_array(ci, count, igt_exchange_int);
+
+ igt_assert(i < num_engines);
+
+ ctx[i] = gem_context_create(i915);
+
+ if (!i)
+ vm = ctx_get_vm(i915, ctx[i]);
+ else
+ ctx_set_vm(i915, ctx[i], vm);
+
+ set_load_balancer(i915, ctx[i], ci, count, NULL);
+
+ spin[i] = igt_spin_new(i915,
+ .ctx = ctx[i],
+ .flags = spin_flags());
+ i++;
+ }
+
+ free(ci);
+ }
+
+ count = wait_timeout(i915, spin, num_engines, wait_us, expect);
+
+ for (i = 0; i < num_engines && spin[i]; i++) {
+ gem_context_destroy(i915, ctx[i]);
+ igt_spin_free(i915, spin[i]);
+ }
+
+ igt_assert_eq(count, expect);
+}
+
+igt_main
+{
+ int i915 = -1;
+
+ igt_fixture {
+ struct drm_i915_query_item item;
+ char *tmp;
+
+ i915 = drm_open_driver_master(DRIVER_INTEL);
+ gem_submission_print_method(i915);
+ gem_scheduler_print_capability(i915);
+
+ igt_require_gem(i915);
+
+ tmp = __igt_params_get(i915, "request_timeout_ms");
+ if (tmp) {
+ const unsigned int timeout = 1;
+
+ igt_params_save_and_set(i915, "request_timeout_ms",
+ "%u", timeout * 1000);
+ default_timeout_wait_s = timeout * 5;
+ free(tmp);
+ } else {
+ default_timeout_wait_s = 12;
+ }
+
+ i915 = gem_reopen_driver(i915); /* Apply modparam. */
+
+ __engines__ = malloc(4096);
+ igt_assert(__engines__);
+ memset(__engines__, 0, 4096);
+ memset(&item, 0, sizeof(item));
+ item.query_id = DRM_I915_QUERY_ENGINE_INFO;
+ item.data_ptr = to_user_pointer(__engines__);
+ item.length = 4096;
+ i915_query_items(i915, &item, 1);
+ igt_assert(item.length >= 0);
+ igt_assert(item.length <= 4096);
+ igt_assert(__engines__->num_engines > 0);
+ }
+
+ igt_subtest_group {
+ igt_subtest("default-physical")
+ physical(i915);
+
+ igt_subtest("default-virtual")
+ virtual(i915);
+ }
+
+ igt_fixture {
+ close(i915);
+ }
+}
diff --git a/tests/meson.build b/tests/meson.build
index 825e01833b0e..e0b110400f28 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -221,6 +221,7 @@ i915_progs = [
'gem_userptr_blits',
'gem_vm_create',
'gem_wait',
+ 'gem_watchdog',
'gem_workarounds',
'i915_fb_tiling',
'i915_getparams_basic',
--
2.27.0
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