diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-07-06 11:39:43 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-07-06 18:22:36 +0100 |
| commit | 6dd7526f6f6c73961eecec8a4b9b717d414010f8 (patch) | |
| tree | a0fe44aa77b07f5e7a6b4c278ce6de700276a92e /drivers/gpu/drm/i915/i915_request.c | |
| parent | da99fe5f858525b0eac5a5296bba5d6bedb81abd (diff) | |
drm/i915: Export i915_request_skip()
In the next patch, we will want to start skipping requests on failing to
complete their payloads. So export the utility function current used to
make requests inoperable following a failed gpu reset.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180706103947.15919-2-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/i915_request.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_request.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_request.c b/drivers/gpu/drm/i915/i915_request.c index a2f7e9358450..7ae08b68121e 100644 --- a/drivers/gpu/drm/i915/i915_request.c +++ b/drivers/gpu/drm/i915/i915_request.c @@ -1013,6 +1013,27 @@ i915_request_await_object(struct i915_request *to, return ret; } +void i915_request_skip(struct i915_request *rq, int error) +{ + void *vaddr = rq->ring->vaddr; + u32 head; + + GEM_BUG_ON(!IS_ERR_VALUE((long)error)); + dma_fence_set_error(&rq->fence, error); + + /* + * As this request likely depends on state from the lost + * context, clear out all the user operations leaving the + * breadcrumb at the end (so we get the fence notifications). + */ + head = rq->infix; + if (rq->postfix < head) { + memset(vaddr + head, 0, rq->ring->size - head); + head = 0; + } + memset(vaddr + head, 0, rq->postfix - head); +} + /* * NB: This function is not allowed to fail. Doing so would mean the the * request is not being tracked for completion but the work itself is |