Chris Wilson <[email protected]> writes: > As soon as we mark a request as completed, it may be retired. So when > cancelling a request and marking it complete, make sure we first keep a > reference to the request. > > Signed-off-by: Chris Wilson <[email protected]>
Reviewed-by: Mika Kuoppala <[email protected]> > --- > .../drm/i915/gt/intel_execlists_submission.c | 19 +++++++++++-------- > drivers/gpu/drm/i915/gt/intel_reset.c | 15 ++++++--------- > .../gpu/drm/i915/gt/intel_ring_submission.c | 2 +- > drivers/gpu/drm/i915/gt/mock_engine.c | 8 +++++--- > drivers/gpu/drm/i915/i915_request.c | 9 +++++++-- > drivers/gpu/drm/i915/i915_request.h | 2 +- > 6 files changed, 31 insertions(+), 24 deletions(-) > > diff --git a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c > b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c > index e7593df6777d..45a8ac152b88 100644 > --- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c > +++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c > @@ -2976,7 +2976,7 @@ static void execlists_reset_cancel(struct > intel_engine_cs *engine) > > /* Mark all executing requests as skipped. */ > list_for_each_entry(rq, &engine->active.requests, sched.link) > - i915_request_mark_eio(rq); > + i915_request_put(i915_request_mark_eio(rq)); > intel_engine_signal_breadcrumbs(engine); > > /* Flush the queued requests to the timeline list (for retiring). */ > @@ -2984,8 +2984,10 @@ static void execlists_reset_cancel(struct > intel_engine_cs *engine) > struct i915_priolist *p = to_priolist(rb); > > priolist_for_each_request_consume(rq, rn, p) { > - i915_request_mark_eio(rq); > - __i915_request_submit(rq); > + if (i915_request_mark_eio(rq)) { > + __i915_request_submit(rq); > + i915_request_put(rq); > + } > } > > rb_erase_cached(&p->node, &execlists->queue); > @@ -2994,7 +2996,7 @@ static void execlists_reset_cancel(struct > intel_engine_cs *engine) > > /* On-hold requests will be flushed to timeline upon their release */ > list_for_each_entry(rq, &engine->active.hold, sched.link) > - i915_request_mark_eio(rq); > + i915_request_put(i915_request_mark_eio(rq)); > > /* Cancel all attached virtual engines */ > while ((rb = rb_first_cached(&execlists->virtual))) { > @@ -3007,10 +3009,11 @@ static void execlists_reset_cancel(struct > intel_engine_cs *engine) > spin_lock(&ve->base.active.lock); > rq = fetch_and_zero(&ve->request); > if (rq) { > - i915_request_mark_eio(rq); > - > - rq->engine = engine; > - __i915_request_submit(rq); > + if (i915_request_mark_eio(rq)) { > + rq->engine = engine; > + __i915_request_submit(rq); > + i915_request_put(rq); > + } > i915_request_put(rq); > > ve->base.execlists.queue_priority_hint = INT_MIN; > diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c > b/drivers/gpu/drm/i915/gt/intel_reset.c > index 107430e1e864..a82c4d7b23bc 100644 > --- a/drivers/gpu/drm/i915/gt/intel_reset.c > +++ b/drivers/gpu/drm/i915/gt/intel_reset.c > @@ -786,18 +786,15 @@ static void reset_finish(struct intel_gt *gt, > intel_engine_mask_t awake) > > static void nop_submit_request(struct i915_request *request) > { > - struct intel_engine_cs *engine = request->engine; > - unsigned long flags; > - > RQ_TRACE(request, "-EIO\n"); > - i915_request_set_error_once(request, -EIO); > > - spin_lock_irqsave(&engine->active.lock, flags); > - __i915_request_submit(request); > - i915_request_mark_complete(request); > - spin_unlock_irqrestore(&engine->active.lock, flags); > + request = i915_request_mark_eio(request); > + if (request) { > + i915_request_submit(request); > + intel_engine_signal_breadcrumbs(request->engine); > > - intel_engine_signal_breadcrumbs(engine); > + i915_request_put(request); > + } > } > > static void __intel_gt_set_wedged(struct intel_gt *gt) > diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c > b/drivers/gpu/drm/i915/gt/intel_ring_submission.c > index 8b7cc637c432..9c2c605d7a92 100644 > --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c > +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c > @@ -400,7 +400,7 @@ static void reset_cancel(struct intel_engine_cs *engine) > > /* Mark all submitted requests as skipped. */ > list_for_each_entry(request, &engine->active.requests, sched.link) > - i915_request_mark_eio(request); > + i915_request_put(i915_request_mark_eio(request)); > intel_engine_signal_breadcrumbs(engine); > > /* Remaining _unready_ requests will be nop'ed when submitted */ > diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c > b/drivers/gpu/drm/i915/gt/mock_engine.c > index df7c1b1acc32..cf1269e74998 100644 > --- a/drivers/gpu/drm/i915/gt/mock_engine.c > +++ b/drivers/gpu/drm/i915/gt/mock_engine.c > @@ -239,13 +239,15 @@ static void mock_reset_cancel(struct intel_engine_cs > *engine) > > /* Mark all submitted requests as skipped. */ > list_for_each_entry(rq, &engine->active.requests, sched.link) > - i915_request_mark_eio(rq); > + i915_request_put(i915_request_mark_eio(rq)); > intel_engine_signal_breadcrumbs(engine); > > /* Cancel and submit all pending requests. */ > list_for_each_entry(rq, &mock->hw_queue, mock.link) { > - i915_request_mark_eio(rq); > - __i915_request_submit(rq); > + if (i915_request_mark_eio(rq)) { > + __i915_request_submit(rq); > + i915_request_put(rq); > + } > } > INIT_LIST_HEAD(&mock->hw_queue); > > diff --git a/drivers/gpu/drm/i915/i915_request.c > b/drivers/gpu/drm/i915/i915_request.c > index d66981b083cd..a336d6c40d8b 100644 > --- a/drivers/gpu/drm/i915/i915_request.c > +++ b/drivers/gpu/drm/i915/i915_request.c > @@ -514,15 +514,20 @@ void i915_request_set_error_once(struct i915_request > *rq, int error) > } while (!try_cmpxchg(&rq->fence.error, &old, error)); > } > > -void i915_request_mark_eio(struct i915_request *rq) > +struct i915_request *i915_request_mark_eio(struct i915_request *rq) > { > if (__i915_request_is_complete(rq)) > - return; > + return NULL; > > GEM_BUG_ON(i915_request_signaled(rq)); > > + /* As soon as the request is completed, it may be retired */ > + rq = i915_request_get(rq); > + > i915_request_set_error_once(rq, -EIO); > i915_request_mark_complete(rq); > + > + return rq; > } > > bool __i915_request_submit(struct i915_request *request) > diff --git a/drivers/gpu/drm/i915/i915_request.h > b/drivers/gpu/drm/i915/i915_request.h > index 1bfe214a47e9..c0bd4cb8786a 100644 > --- a/drivers/gpu/drm/i915/i915_request.h > +++ b/drivers/gpu/drm/i915/i915_request.h > @@ -311,7 +311,7 @@ i915_request_create(struct intel_context *ce); > > void __i915_request_skip(struct i915_request *rq); > void i915_request_set_error_once(struct i915_request *rq, int error); > -void i915_request_mark_eio(struct i915_request *rq); > +struct i915_request *i915_request_mark_eio(struct i915_request *rq); > > struct i915_request *__i915_request_commit(struct i915_request *request); > void __i915_request_queue(struct i915_request *rq, > -- > 2.20.1 > > _______________________________________________ > Intel-gfx mailing list > [email protected] > https://lists.freedesktop.org/mailman/listinfo/intel-gfx _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
