diff options
Diffstat (limited to 'drivers/gpu/drm/i915/selftests/i915_sw_fence.c')
| -rw-r--r-- | drivers/gpu/drm/i915/selftests/i915_sw_fence.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c index 19d145d6bf52..ea01d0fe3ace 100644 --- a/drivers/gpu/drm/i915/selftests/i915_sw_fence.c +++ b/drivers/gpu/drm/i915/selftests/i915_sw_fence.c @@ -24,6 +24,7 @@ #include <linux/completion.h> #include <linux/delay.h> +#include <linux/prime_numbers.h> #include "../i915_selftest.h" @@ -565,6 +566,46 @@ err_in: return ret; } +static int test_timer(void *arg) +{ + unsigned long target, delay; + struct timed_fence tf; + + timed_fence_init(&tf, target = jiffies); + if (!i915_sw_fence_done(&tf.fence)) { + pr_err("Fence with immediate expiration not signaled\n"); + goto err; + } + timed_fence_fini(&tf); + + for_each_prime_number(delay, i915_selftest.timeout_jiffies/2) { + timed_fence_init(&tf, target = jiffies + delay); + if (i915_sw_fence_done(&tf.fence)) { + pr_err("Fence with future expiration (%lu jiffies) already signaled\n", delay); + goto err; + } + + i915_sw_fence_wait(&tf.fence); + if (!i915_sw_fence_done(&tf.fence)) { + pr_err("Fence not signaled after wait\n"); + goto err; + } + if (time_before(jiffies, target)) { + pr_err("Fence signaled too early, target=%lu, now=%lu\n", + target, jiffies); + goto err; + } + + timed_fence_fini(&tf); + } + + return 0; + +err: + timed_fence_fini(&tf); + return -EINVAL; +} + int i915_sw_fence_mock_selftests(void) { static const struct i915_subtest tests[] = { @@ -576,6 +617,7 @@ int i915_sw_fence_mock_selftests(void) SUBTEST(test_C_AB), SUBTEST(test_chain), SUBTEST(test_ipc), + SUBTEST(test_timer), }; return i915_subtests(tests, NULL); |