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drm/i915: Add a simple request selftest for waiting

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A trivial kselftest to submit a request and wait upon it.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-11-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2017-02-13 17:15:22 +00:00
parent c835c55083
commit f1ae924d18
1 changed files with 71 additions and 0 deletions
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71
drivers/gpu/drm/i915/selftests/i915_gem_request.c
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@ -49,10 +49,81 @@ out_unlock:
return err;
}
static int igt_wait_request(void *arg)
{
const long T = HZ / 4;
struct drm_i915_private *i915 = arg;
struct drm_i915_gem_request *request;
int err = -EINVAL;
/* Submit a request, then wait upon it */
mutex_lock(&i915->drm.struct_mutex);
request = mock_request(i915->engine[RCS], i915->kernel_context, T);
if (!request) {
err = -ENOMEM;
goto out_unlock;
}
if (i915_wait_request(request, I915_WAIT_LOCKED, 0) != -ETIME) {
pr_err("request wait (busy query) succeeded (expected timeout before submit!)\n");
goto out_unlock;
}
if (i915_wait_request(request, I915_WAIT_LOCKED, T) != -ETIME) {
pr_err("request wait succeeded (expected timeout before submit!)\n");
goto out_unlock;
}
if (i915_gem_request_completed(request)) {
pr_err("request completed before submit!!\n");
goto out_unlock;
}
i915_add_request(request);
if (i915_wait_request(request, I915_WAIT_LOCKED, 0) != -ETIME) {
pr_err("request wait (busy query) succeeded (expected timeout after submit!)\n");
goto out_unlock;
}
if (i915_gem_request_completed(request)) {
pr_err("request completed immediately!\n");
goto out_unlock;
}
if (i915_wait_request(request, I915_WAIT_LOCKED, T / 2) != -ETIME) {
pr_err("request wait succeeded (expected timeout!)\n");
goto out_unlock;
}
if (i915_wait_request(request, I915_WAIT_LOCKED, T) == -ETIME) {
pr_err("request wait timed out!\n");
goto out_unlock;
}
if (!i915_gem_request_completed(request)) {
pr_err("request not complete after waiting!\n");
goto out_unlock;
}
if (i915_wait_request(request, I915_WAIT_LOCKED, T) == -ETIME) {
pr_err("request wait timed out when already complete!\n");
goto out_unlock;
}
err = 0;
out_unlock:
mock_device_flush(i915);
mutex_unlock(&i915->drm.struct_mutex);
return err;
}
int i915_gem_request_mock_selftests(void)
{
static const struct i915_subtest tests[] = {
SUBTEST(igt_add_request),
SUBTEST(igt_wait_request),
};
struct drm_i915_private *i915;
int err;