[PATCH i-g-t 07/16] i915: Add gem_ctx_clone

Chris Wilson
2019-05-08T10:09:49Z

Exercise cloning contexts, an extension of merely creating one.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
tests/Makefile.sources | 1 +
tests/i915/gem_ctx_clone.c | 460 +++++++++++++++++++++++++++++++++++++
tests/meson.build | 1 +
3 files changed, 462 insertions(+)
create mode 100644 tests/i915/gem_ctx_clone.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 1a541d206..e1b7feeb2 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -21,6 +21,7 @@ TESTS_progs = \
drm_import_export \
drm_mm \
drm_read \
+ i915/gem_ctx_clone \
i915/gem_vm_create \
kms_3d \
kms_addfb_basic \
diff --git a/tests/i915/gem_ctx_clone.c b/tests/i915/gem_ctx_clone.c
new file mode 100644
index 000000000..cdc5bf413
--- /dev/null
+++ b/tests/i915/gem_ctx_clone.c
@@ -0,0 +1,460 @@
+/*
+ * Copyright © 2019 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 "igt.h"
+#include "igt_gt.h"
+#include "i915/gem_vm.h"
+#include "i915_drm.h"
+
+static int ctx_create_ioctl(int i915, struct drm_i915_gem_context_create_ext *arg)
+{
+ int err;
+
+ err = 0;
+ if (igt_ioctl(i915, DRM_IOCTL_I915_GEM_CONTEXT_CREATE_EXT, arg)) {
+ err = -errno;
+ igt_assume(err);
+ }
+
+ errno = 0;
+ return err;
+}
+
+static bool has_ctx_clone(int i915)
+{
+ struct drm_i915_gem_context_create_ext_clone ext = {
+ { .name = I915_CONTEXT_CREATE_EXT_CLONE },
+ .clone_id = -1,
+ };
+ struct drm_i915_gem_context_create_ext create = {
+ .flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
+ .extensions = to_user_pointer(&ext),
+ };
+ return ctx_create_ioctl(i915, &create) == -ENOENT;
+}
+
+static void invalid_clone(int i915)
+{
+ struct drm_i915_gem_context_create_ext_clone ext = {
+ { .name = I915_CONTEXT_CREATE_EXT_CLONE },
+ };
+ struct drm_i915_gem_context_create_ext create = {
+ .flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
+ .extensions = to_user_pointer(&ext),
+ };
+
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+ gem_context_destroy(i915, create.ctx_id);
+
+ ext.flags = -1; /* Hopefully we won't run out of flags */
+ igt_assert_eq(ctx_create_ioctl(i915, &create), -EINVAL);
+ ext.flags = 0;
+
+ ext.base.next_extension = -1;
+ igt_assert_eq(ctx_create_ioctl(i915, &create), -EFAULT);
+ ext.base.next_extension = to_user_pointer(&ext);
+ igt_assert_eq(ctx_create_ioctl(i915, &create), -E2BIG);
+ ext.base.next_extension = 0;
+
+ ext.clone_id = -1;
+ igt_assert_eq(ctx_create_ioctl(i915, &create), -ENOENT);
+ ext.clone_id = 0;
+}
+
+static void clone_flags(int i915)
+{
+ struct drm_i915_gem_context_create_ext_setparam set = {
+ { .name = I915_CONTEXT_CREATE_EXT_SETPARAM },
+ { .param = I915_CONTEXT_PARAM_RECOVERABLE },
+ };
+ struct drm_i915_gem_context_create_ext_clone ext = {
+ { .name = I915_CONTEXT_CREATE_EXT_CLONE },
+ .flags = I915_CONTEXT_CLONE_FLAGS,
+ };
+ struct drm_i915_gem_context_create_ext create = {
+ .flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
+ .extensions = to_user_pointer(&ext),
+ };
+ int expected;
+
+ set.param.value = 1; /* default is recoverable */
+ igt_require(__gem_context_set_param(i915, &set.param) == 0);
+
+ for (int pass = 0; pass < 2; pass++) { /* cloning default, then child */
+ igt_debug("Cloning %d\n", ext.clone_id);
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+
+ set.param.ctx_id = ext.clone_id;
+ gem_context_get_param(i915, &set.param);
+ expected = set.param.value;
+
+ set.param.ctx_id = create.ctx_id;
+ gem_context_get_param(i915, &set.param);
+
+ igt_assert_eq_u64(set.param.param,
+ I915_CONTEXT_PARAM_RECOVERABLE);
+ igt_assert_eq((int)set.param.value, expected);
+
+ gem_context_destroy(i915, create.ctx_id);
+
+ expected = set.param.value = 0;
+ set.param.ctx_id = ext.clone_id;
+ gem_context_set_param(i915, &set.param);
+
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+
+ set.param.ctx_id = create.ctx_id;
+ gem_context_get_param(i915, &set.param);
+
+ igt_assert_eq_u64(set.param.param,
+ I915_CONTEXT_PARAM_RECOVERABLE);
+ igt_assert_eq((int)set.param.value, expected);
+
+ gem_context_destroy(i915, create.ctx_id);
+
+ /* clone but then reset priority to default... */
+ set.param.ctx_id = 0;
+ set.param.value = 1;
+ ext.base.next_extension = to_user_pointer(&set);
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+ ext.base.next_extension = 0;
+
+ /* new context should have updated prio... */
+ set.param.ctx_id = create.ctx_id;
+ gem_context_get_param(i915, &set.param);
+ igt_assert_eq_u64(set.param.value, 1);
+
+ /* but original context should have default prio */
+ set.param.ctx_id = ext.clone_id;
+ gem_context_get_param(i915, &set.param);
+ igt_assert_eq_u64(set.param.value, 0);
+
+ gem_context_destroy(i915, create.ctx_id);
+ ext.clone_id = gem_context_create(i915);
+ }
+
+ gem_context_destroy(i915, ext.clone_id);
+}
+
+static void clone_engines(int i915)
+{
+ struct drm_i915_gem_context_create_ext_setparam set = {
+ { .name = I915_CONTEXT_CREATE_EXT_SETPARAM },
+ { .param = I915_CONTEXT_PARAM_ENGINES },
+ };
+ struct drm_i915_gem_context_create_ext_clone ext = {
+ { .name = I915_CONTEXT_CREATE_EXT_CLONE },
+ .flags = I915_CONTEXT_CLONE_ENGINES,
+ };
+ struct drm_i915_gem_context_create_ext create = {
+ .flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
+ .extensions = to_user_pointer(&ext),
+ };
+ I915_DEFINE_CONTEXT_PARAM_ENGINES(expected, 64);
+ I915_DEFINE_CONTEXT_PARAM_ENGINES(engines, 64);
+ uint64_t ex_size;
+
+ memset(&expected, 0, sizeof(expected));
+ memset(&engines, 0, sizeof(engines));
+
+ igt_require(__gem_context_set_param(i915, &set.param) == 0);
+
+ for (int pass = 0; pass < 2; pass++) { /* cloning default, then child */
+ igt_debug("Cloning %d\n", ext.clone_id);
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+
+ set.param.ctx_id = ext.clone_id;
+ set.param.size = sizeof(expected);
+ set.param.value = to_user_pointer(&expected);
+ gem_context_get_param(i915, &set.param);
+ ex_size = set.param.size;
+
+ set.param.ctx_id = create.ctx_id;
+ set.param.size = sizeof(engines);
+ set.param.value = to_user_pointer(&engines);
+ gem_context_get_param(i915, &set.param);
+
+ igt_assert_eq_u64(set.param.param, I915_CONTEXT_PARAM_ENGINES);
+ igt_assert_eq_u64(set.param.size, ex_size);
+ igt_assert(!memcmp(&engines, &expected, ex_size));
+
+ gem_context_destroy(i915, create.ctx_id);
+
+ expected.engines[0].engine_class =
+ I915_ENGINE_CLASS_INVALID;
+ expected.engines[0].engine_instance =
+ I915_ENGINE_CLASS_INVALID_NONE;
+ ex_size = (sizeof(struct i915_context_param_engines) +
+ sizeof(expected.engines[0]));
+
+ set.param.ctx_id = ext.clone_id;
+ set.param.size = ex_size;
+ set.param.value = to_user_pointer(&expected);
+ gem_context_set_param(i915, &set.param);
+
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+
+ set.param.ctx_id = create.ctx_id;
+ set.param.size = sizeof(engines);
+ set.param.value = to_user_pointer(&engines);
+ gem_context_get_param(i915, &set.param);
+
+ igt_assert_eq_u64(set.param.size, ex_size);
+ igt_assert(!memcmp(&engines, &expected, ex_size));
+
+ gem_context_destroy(i915, create.ctx_id);
+
+ /* clone but then reset engines to default */
+ set.param.ctx_id = 0;
+ set.param.size = 0;
+ set.param.value = 0;
+ ext.base.next_extension = to_user_pointer(&set);
+
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+ ext.base.next_extension = 0;
+
+ set.param.ctx_id = create.ctx_id;
+ set.param.size = sizeof(engines);
+ set.param.value = to_user_pointer(&engines);
+ gem_context_get_param(i915, &set.param);
+ igt_assert_eq_u64(set.param.size, 0);
+
+ gem_context_destroy(i915, create.ctx_id);
+
+ /* And check we ignore the flag */
+ ext.flags = 0;
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+ ext.flags = I915_CONTEXT_CLONE_ENGINES;
+
+ set.param.ctx_id = create.ctx_id;
+ set.param.size = sizeof(engines);
+ set.param.value = to_user_pointer(&engines);
+ gem_context_get_param(i915, &set.param);
+ igt_assert_eq_u64(set.param.size, 0);
+
+ ext.clone_id = gem_context_create(i915);
+ }
+
+ gem_context_destroy(i915, ext.clone_id);
+}
+
+static void clone_scheduler(int i915)
+{
+ struct drm_i915_gem_context_create_ext_setparam set = {
+ { .name = I915_CONTEXT_CREATE_EXT_SETPARAM },
+ { .param = I915_CONTEXT_PARAM_PRIORITY },
+ };
+ struct drm_i915_gem_context_create_ext_clone ext = {
+ { .name = I915_CONTEXT_CREATE_EXT_CLONE },
+ .flags = I915_CONTEXT_CLONE_SCHEDATTR,
+ };
+ struct drm_i915_gem_context_create_ext create = {
+ .flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
+ .extensions = to_user_pointer(&ext),
+ };
+ int expected;
+
+ igt_require(__gem_context_set_param(i915, &set.param) == 0);
+
+ for (int pass = 0; pass < 2; pass++) { /* cloning default, then child */
+ igt_debug("Cloning %d\n", ext.clone_id);
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+
+ set.param.ctx_id = ext.clone_id;
+ gem_context_get_param(i915, &set.param);
+ expected = set.param.value;
+
+ set.param.ctx_id = create.ctx_id;
+ gem_context_get_param(i915, &set.param);
+
+ igt_assert_eq_u64(set.param.param, I915_CONTEXT_PARAM_PRIORITY);
+ igt_assert_eq((int)set.param.value, expected);
+
+ gem_context_destroy(i915, create.ctx_id);
+
+ expected = set.param.value = 1;
+ set.param.ctx_id = ext.clone_id;
+ gem_context_set_param(i915, &set.param);
+
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+
+ set.param.ctx_id = create.ctx_id;
+ gem_context_get_param(i915, &set.param);
+
+ igt_assert_eq_u64(set.param.param, I915_CONTEXT_PARAM_PRIORITY);
+ igt_assert_eq((int)set.param.value, expected);
+
+ gem_context_destroy(i915, create.ctx_id);
+
+ /* clone but then reset priority to default */
+ set.param.ctx_id = 0;
+ set.param.value = 0;
+ ext.base.next_extension = to_user_pointer(&set);
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+ ext.base.next_extension = 0;
+
+ set.param.ctx_id = create.ctx_id;
+ gem_context_get_param(i915, &set.param);
+ igt_assert_eq_u64(set.param.value, 0);
+
+ set.param.ctx_id = ext.clone_id;
+ gem_context_get_param(i915, &set.param);
+ igt_assert_eq_u64(set.param.value, 1);
+
+ gem_context_destroy(i915, create.ctx_id);
+ ext.clone_id = gem_context_create(i915);
+ }
+
+ gem_context_destroy(i915, ext.clone_id);
+}
+
+static uint32_t __batch_create(int i915, uint32_t offset)
+{
+ const uint32_t bbe = MI_BATCH_BUFFER_END;
+ uint32_t handle;
+
+ handle = gem_create(i915, ALIGN(offset + 4, 4096));
+ gem_write(i915, handle, offset, &bbe, sizeof(bbe));
+
+ return handle;
+}
+
+static uint32_t batch_create(int i915)
+{
+ return __batch_create(i915, 0);
+}
+
+static void check_same_vm(int i915, uint32_t ctx_a, uint32_t ctx_b)
+{
+ struct drm_i915_gem_exec_object2 batch = {
+ .handle = batch_create(i915),
+ };
+ struct drm_i915_gem_execbuffer2 eb = {
+ .buffers_ptr = to_user_pointer(&batch),
+ .buffer_count = 1,
+ };
+
+ /* First verify that we try to use "softpinning" by default */
+ batch.offset = 48 << 20;
+ eb.rsvd1 = ctx_a;
+ gem_execbuf(i915, &eb);
+ igt_assert_eq_u64(batch.offset, 48 << 20);
+
+ /* An already active VMA will try to keep its offset */
+ batch.offset = 0;
+ eb.rsvd1 = ctx_b;
+ gem_execbuf(i915, &eb);
+ igt_assert_eq_u64(batch.offset, 48 << 20);
+
+ gem_sync(i915, batch.handle);
+ gem_close(i915, batch.handle);
+
+ gem_quiescent_gpu(i915); /* evict the vma */
+}
+
+static void clone_vm(int i915)
+{
+ struct drm_i915_gem_context_param set = {
+ .param = I915_CONTEXT_PARAM_VM,
+ };
+ struct drm_i915_gem_context_create_ext_clone ext = {
+ { .name = I915_CONTEXT_CREATE_EXT_CLONE },
+ .flags = I915_CONTEXT_CLONE_VM,
+ };
+ struct drm_i915_gem_context_create_ext create = {
+ .flags = I915_CONTEXT_CREATE_FLAGS_USE_EXTENSIONS,
+ .extensions = to_user_pointer(&ext),
+ };
+ uint32_t vm_id[2];
+
+ igt_require(__gem_context_set_param(i915, &set) == -ENOENT);
+
+ /* Scrub the VM for our tests */
+ i915 = gem_reopen_driver(i915);
+
+ set.ctx_id = gem_context_create(i915);
+ gem_context_get_param(i915, &set);
+ vm_id[0] = set.value;
+ gem_context_destroy(i915, set.ctx_id);
+
+ vm_id[1] = gem_vm_create(i915);
+
+ for (int pass = 0; pass < 2; pass++) { /* cloning default, then child */
+ igt_debug("Cloning %d\n", ext.clone_id);
+
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+ check_same_vm(i915, ext.clone_id, create.ctx_id);
+ gem_context_destroy(i915, create.ctx_id);
+
+ set.value = vm_id[pass];
+ set.ctx_id = ext.clone_id;
+ gem_context_set_param(i915, &set);
+
+ igt_assert_eq(ctx_create_ioctl(i915, &create), 0);
+ check_same_vm(i915, ext.clone_id, create.ctx_id);
+ gem_context_destroy(i915, create.ctx_id);
+
+ ext.clone_id = gem_context_create(i915);
+ }
+
+ gem_context_destroy(i915, ext.clone_id);
+
+ for (int i = 0; i < ARRAY_SIZE(vm_id); i++)
+ gem_vm_destroy(i915, vm_id[i]);
+
+ close(i915);
+}
+
+igt_main
+{
+ int i915 = -1;
+
+ igt_fixture {
+ i915 = drm_open_driver(DRIVER_INTEL);
+ igt_require_gem(i915);
+ gem_require_contexts(i915);
+
+ igt_require(has_ctx_clone(i915));
+ igt_fork_hang_detector(i915);
+ }
+
+ igt_subtest("invalid")
+ invalid_clone(i915);
+
+ igt_subtest("engines")
+ clone_engines(i915);
+
+ igt_subtest("flags")
+ clone_flags(i915);
+
+ igt_subtest("scheduler")
+ clone_scheduler(i915);
+
+ igt_subtest("vm")
+ clone_vm(i915);
+
+ igt_fixture {
+ igt_stop_hang_detector();
+ close(i915);
+ }
+}
diff --git a/tests/meson.build b/tests/meson.build
index e7dbc5756..3810bd760 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -109,6 +109,7 @@ i915_progs = [
'gem_cs_prefetch',
'gem_cs_tlb',
'gem_ctx_bad_destroy',
+ 'gem_ctx_clone',
'gem_ctx_create',
'gem_ctx_exec',
'gem_ctx_isolation',
--
2.20.1