diff options
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_gem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_gem.c | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem.c b/drivers/gpu/drm/i915/selftests/i915_gem.c index 88d400b9df88..23a6132c5f4e 100644 --- a/drivers/gpu/drm/i915/selftests/i915_gem.c +++ b/drivers/gpu/drm/i915/selftests/i915_gem.c @@ -199,11 +199,52 @@ out: return err; } +static int igt_gem_ww_ctx(void *arg) +{ + struct drm_i915_private *i915 = arg; + struct drm_i915_gem_object *obj, *obj2; + struct i915_gem_ww_ctx ww; + int err = 0; + + obj = i915_gem_object_create_internal(i915, PAGE_SIZE); + if (IS_ERR(obj)) + return PTR_ERR(obj); + + obj2 = i915_gem_object_create_internal(i915, PAGE_SIZE); + if (IS_ERR(obj)) { + err = PTR_ERR(obj); + goto put1; + } + + i915_gem_ww_ctx_init(&ww, true); +retry: + /* Lock the objects, twice for good measure (-EALREADY handling) */ + err = i915_gem_object_lock(obj, &ww); + if (!err) + err = i915_gem_object_lock_interruptible(obj, &ww); + if (!err) + err = i915_gem_object_lock_interruptible(obj2, &ww); + if (!err) + err = i915_gem_object_lock(obj2, &ww); + + if (err == -EDEADLK) { + err = i915_gem_ww_ctx_backoff(&ww); + if (!err) + goto retry; + } + i915_gem_ww_ctx_fini(&ww); + i915_gem_object_put(obj2); +put1: + i915_gem_object_put(obj); + return err; +} + int i915_gem_live_selftests(struct drm_i915_private *i915) { static const struct i915_subtest tests[] = { SUBTEST(igt_gem_suspend), SUBTEST(igt_gem_hibernate), + SUBTEST(igt_gem_ww_ctx), }; if (intel_gt_is_wedged(&i915->gt)) |