From: Antonio Argenziano <antonio.argenziano at intel.com>
Since commit: drm/i915/scheduler: Support user-defined priorities, the
driver support an extra context param to set context's priority. Add
tests for that interface and update invalid tests.
v2:
- Add arg size validation test. (Chris)
- Add arg value overflow test. (Chris)
- Add test for unsupported platforms. (Chris)
- Feed interface with all priority values and in random order. (Chris)
v3:
- Parametrize tests. (Chris)
v4:
- Code-style refactoring. (Chris)
Signed-off-by: Antonio Argenziano <antonio.argenziano at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski at intel.com>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
---
tests/gem_ctx_param.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 136 insertions(+), 1 deletion(-)
diff --git a/tests/gem_ctx_param.c b/tests/gem_ctx_param.c
index db68f57b..c00488c7 100644
--- a/tests/gem_ctx_param.c
+++ b/tests/gem_ctx_param.c
@@ -25,9 +25,103 @@
*/
#include "igt.h"
+#include <limits.h>
IGT_TEST_DESCRIPTION("Basic test for context set/get param input validation.");
+#define BIT(x) (1ul << (x))
+
+#define NEW_CTX BIT(0)
+#define USER BIT(1)
+
+static void set_priority(int fd)
+{
+ static const int64_t test_values[] = {
+ /* Test space too big, pick significant values */
+ INT_MIN,
+
+ I915_CONTEXT_MIN_USER_PRIORITY - 1,
+ I915_CONTEXT_MIN_USER_PRIORITY,
+ I915_CONTEXT_MIN_USER_PRIORITY + 1,
+
+ I915_CONTEXT_DEFAULT_PRIORITY - 1,
+ I915_CONTEXT_DEFAULT_PRIORITY,
+ I915_CONTEXT_DEFAULT_PRIORITY + 1,
+
+ I915_CONTEXT_MAX_USER_PRIORITY - 1,
+ I915_CONTEXT_MAX_USER_PRIORITY,
+ I915_CONTEXT_MAX_USER_PRIORITY + 1,
+
+ INT_MAX
+ };
+ unsigned int size;
+ int64_t *values;
+
+ igt_require(getuid() == 0);
+
+ size = ARRAY_SIZE(test_values);
+ values = malloc(sizeof(test_values) * 2);
+ igt_assert(values);
+
+ for (unsigned i = 0; i < size; i++) {
+ values[i] = test_values[i];
+ values[i + size] = test_values[i] | (uint64_t)rand() << 32;
+ }
+
+ igt_permute_array(values, size, igt_exchange_int64);
+
+ igt_fork(flags, NEW_CTX | USER) {
+ struct drm_i915_gem_context_param arg = {
+ .param = I915_CONTEXT_PARAM_PRIORITY,
+ .ctx_id = flags & NEW_CTX ? gem_context_create(fd) : 0,
+ };
+ int64_t old_prio;
+
+ if (flags & USER) {
+ igt_debug("Dropping root privilege\n");
+ igt_drop_root();
+ }
+
+ gem_context_get_param(fd, &arg);
+ old_prio = arg.value;
+
+ for (unsigned i = 0; i < size; i++) {
+ int64_t prio = values[i];
+ int expected = 0;
+ int err;
+
+ arg.value = prio;
+
+ if (flags & USER &&
+ prio > I915_CONTEXT_DEFAULT_PRIORITY)
+ expected = -EPERM;
+
+ if (prio < I915_CONTEXT_MIN_USER_PRIORITY ||
+ prio > I915_CONTEXT_MAX_USER_PRIORITY)
+ expected = -EINVAL;
+
+ err =__gem_context_set_param(fd, &arg);
+ igt_assert_f(err == expected,
+ "Priority requested %" PRId64 ", expected result %d, returned %d\n",
+ prio, expected, err);
+
+ gem_context_get_param(fd, &arg);
+ if (!err)
+ old_prio = prio;
+ igt_assert_eq(arg.value, old_prio);
+ }
+
+ arg.value = 0;
+ gem_context_set_param(fd, &arg);
+
+ if (flags & NEW_CTX)
+ gem_context_destroy(fd, arg.ctx_id);
+ }
+
+ igt_waitchildren();
+ free(values);
+}
+
igt_main
{
struct drm_i915_gem_context_param arg;
@@ -138,11 +232,52 @@ igt_main
gem_context_set_param(fd, &arg);
}
+ arg.param = I915_CONTEXT_PARAM_PRIORITY;
+
+ igt_subtest("set-priority-not-supported") {
+ igt_require(!gem_scheduler_has_ctx_priority(fd));
+
+ arg.ctx_id = ctx;
+ arg.size = 0;
+
+ igt_assert_eq(__gem_context_set_param(fd, &arg), -ENODEV);
+ }
+
+ igt_subtest_group {
+ igt_fixture {
+ igt_require(gem_scheduler_has_ctx_priority(fd));
+ }
+
+ igt_subtest("get-priority-new-ctx") {
+ struct drm_i915_gem_context_param local_arg = arg;
+ uint32_t local_ctx = gem_context_create(fd);
+
+ local_arg.ctx_id = local_ctx;
+
+ gem_context_get_param(fd, &local_arg);
+ igt_assert_eq(local_arg.value, I915_CONTEXT_DEFAULT_PRIORITY);
+
+ gem_context_destroy(fd, local_ctx);
+ }
+
+ igt_subtest("set-priority-invalid-size") {
+ struct drm_i915_gem_context_param local_arg = arg;
+ local_arg.ctx_id = ctx;
+ local_arg.value = 0;
+ local_arg.size = ~0;
+
+ igt_assert_eq(__gem_context_set_param(fd, &local_arg), -EINVAL);
+ }
+
+ igt_subtest("set-priority-range")
+ set_priority(fd);
+ }
+
/* NOTE: This testcase intentionally tests for the next free parameter
* to catch ABI extensions. Don't "fix" this testcase without adding all
* the tests for the new param first.
*/
- arg.param = I915_CONTEXT_PARAM_BANNABLE + 1;
+ arg.param = I915_CONTEXT_PARAM_PRIORITY + 1;
igt_subtest("invalid-param-get") {
arg.ctx_id = ctx;
--
2.16.1