On 22/02/2017 13:59, Chris Wilson wrote:
On Wed, Feb 22, 2017 at 01:46:10PM +0000, Tvrtko Ursulin wrote:
On 22/02/2017 11:46, Chris Wilson wrote:
Add a mock selftest to preempt a request and check that we cancel it,
requeue the request and then complete its execution.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/selftests/i915_gem_request.c | 59 +++++++++++++++++++++++
drivers/gpu/drm/i915/selftests/mock_request.c | 19 ++++++++
drivers/gpu/drm/i915/selftests/mock_request.h | 2 +
3 files changed, 80 insertions(+)
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_request.c b/drivers/gpu/drm/i915/selftests/i915_gem_request.c
index 9d056a86723d..c803ef60a127 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_request.c
@@ -26,6 +26,7 @@
#include "../i915_selftest.h"
+#include "mock_context.h"
#include "mock_gem_device.h"
static int igt_add_request(void *arg)
@@ -181,12 +182,70 @@ static int igt_fence_wait(void *arg)
return err;
}
+static int igt_request_rewind(void *arg)
+{
+ struct drm_i915_private *i915 = arg;
+ struct drm_i915_gem_request *request, *vip;
+ struct i915_gem_context *ctx[2];
+ int err = -EINVAL;
+
+ mutex_lock(&i915->drm.struct_mutex);
+ ctx[0] = mock_context(i915, "A");
+ request = mock_request(i915->engine[RCS], ctx[0], 2 * HZ);
+ if (!request) {
+ err = -ENOMEM;
+ goto err_device;
Leaks ctx[0].
+ }
+ i915_add_request(request);
+
+ ctx[1] = mock_context(i915, "B");
+ vip = mock_request(i915->engine[RCS], ctx[1], 0);
+ if (!vip) {
+ err = -ENOMEM;
+ goto err_locked;
Leaks the request.
That's been handed over to the device.
+bool mock_cancel_request(struct drm_i915_gem_request *request)
+{
+ struct mock_request *mock = container_of(request, typeof(*mock), base);
+ struct mock_engine *engine =
+ container_of(request->engine, typeof(*engine), base);
+ bool was_queued;
+
+ spin_lock_irq(&engine->hw_lock);
+ was_queued = !list_empty(&mock->link);
I suggest a better name for the mock request. Even just req would be
better IMO.
A bit late, the pattern has been set for the file. Currently
request for drm_i915_gem_request and mock for mock_request. I definitely
don't like the idea of req and request in the same function.
Pattern? Try grep "mock_request *" on selftests/* ! :)
Okay.. I r-b'ed some of those so I'll shut up.
Regards,
Tvrtko
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