Am Mittwoch, dem 07.07.2021 um 13:32 +0200 schrieb Daniel Vetter:
> On Wed, Jul 7, 2021 at 1:26 PM Daniel Vetter <daniel.vetter@xxxxxxxx> wrote:
> > On Wed, Jul 7, 2021 at 11:08 AM Lucas Stach <l.stach@xxxxxxxxxxxxxx> wrote:
> > > Am Freitag, dem 02.07.2021 um 23:38 +0200 schrieb Daniel Vetter:
> > > > We need to pull the drm_sched_job_init much earlier, but that's very
> > > > minor surgery.
> > > >
> > > > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
> > > > Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> > > > Cc: Russell King <linux+etnaviv@xxxxxxxxxxxxxxx>
> > > > Cc: Christian Gmeiner <christian.gmeiner@xxxxxxxxx>
> > > > Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
> > > > Cc: "Christian König" <christian.koenig@xxxxxxx>
> > > > Cc: etnaviv@xxxxxxxxxxxxxxxxxxxxx
> > > > Cc: linux-media@xxxxxxxxxxxxxxx
> > > > Cc: linaro-mm-sig@xxxxxxxxxxxxxxxx
> > > > ---
> > > > drivers/gpu/drm/etnaviv/etnaviv_gem.h | 5 +-
> > > > drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 32 +++++-----
> > > > drivers/gpu/drm/etnaviv/etnaviv_sched.c | 61 +-------------------
> > > > drivers/gpu/drm/etnaviv/etnaviv_sched.h | 3 +-
> > > > 4 files changed, 20 insertions(+), 81 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
> > > > index 98e60df882b6..63688e6e4580 100644
> > > > --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h
> > > > +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h
> > > > @@ -80,9 +80,6 @@ struct etnaviv_gem_submit_bo {
> > > > u64 va;
> > > > struct etnaviv_gem_object *obj;
> > > > struct etnaviv_vram_mapping *mapping;
> > > > - struct dma_fence *excl;
> > > > - unsigned int nr_shared;
> > > > - struct dma_fence **shared;
> > > > };
> > > >
> > > > /* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
> > > > @@ -95,7 +92,7 @@ struct etnaviv_gem_submit {
> > > > struct etnaviv_file_private *ctx;
> > > > struct etnaviv_gpu *gpu;
> > > > struct etnaviv_iommu_context *mmu_context, *prev_mmu_context;
> > > > - struct dma_fence *out_fence, *in_fence;
> > > > + struct dma_fence *out_fence;
> > > > int out_fence_id;
> > > > struct list_head node; /* GPU active submit list */
> > > > struct etnaviv_cmdbuf cmdbuf;
> > > > diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> > > > index 4dd7d9d541c0..92478a50a580 100644
> > > > --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> > > > +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
> > > > @@ -188,16 +188,10 @@ static int submit_fence_sync(struct etnaviv_gem_submit *submit)
> > > > if (submit->flags & ETNA_SUBMIT_NO_IMPLICIT)
> > > > continue;
> > > >
> > > > - if (bo->flags & ETNA_SUBMIT_BO_WRITE) {
> > > > - ret = dma_resv_get_fences(robj, &bo->excl,
> > > > - &bo->nr_shared,
> > > > - &bo->shared);
> > > > - if (ret)
> > > > - return ret;
> > > > - } else {
> > > > - bo->excl = dma_resv_get_excl_unlocked(robj);
> > > > - }
> > > > -
> > > > + ret = drm_sched_job_await_implicit(&submit->sched_job, &bo->obj->base,
> > > > + bo->flags & ETNA_SUBMIT_BO_WRITE);
> > > > + if (ret)
> > > > + return ret;
> > > > }
> > > >
> > > > return ret;
> > > > @@ -403,8 +397,6 @@ static void submit_cleanup(struct kref *kref)
> > > >
> > > > wake_up_all(&submit->gpu->fence_event);
> > > >
> > > > - if (submit->in_fence)
> > > > - dma_fence_put(submit->in_fence);
> > > > if (submit->out_fence) {
> > > > /* first remove from IDR, so fence can not be found anymore */
> > > > mutex_lock(&submit->gpu->fence_lock);
> > > > @@ -537,6 +529,12 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
> > > > submit->exec_state = args->exec_state;
> > > > submit->flags = args->flags;
> > > >
> > > > + ret = drm_sched_job_init(&submit->sched_job,
> > > > + &ctx->sched_entity[args->pipe],
> > > > + submit->ctx);
> > > > + if (ret)
> > > > + goto err_submit_objects;
> > > > +
> > >
> > > With the init moved here you also need to move the
> > > drm_sched_job_cleanup call from etnaviv_sched_free_job into
> > > submit_cleanup to avoid the potential memory leak when we bail out
> > > before pushing the job to the scheduler.
> >
> > Uh apologies for missing this again, the entire point of v2 was to fix
> > this across all drivers. But somehow the fixup for etnaviv got lost.
> > I'll do it now for v3.
>
> To clarify, in case you meant I should put it into submit_cleanup():
> That doesn't work, because for some of the paths we shouldn't call it
> yet, so I think it's better to be explicit here (like I've done with
> other drivers) - drm_sched_job_cleanup handles being called
> before/after drm_sched_job_arm, but it doesn't cope well with being
> called before drm_sched_job_init :-)
Yes, that was just my first idea to make sure it's always called. If
this is problematic in some cases I don't care if your solution looks
different, all I care about is that drm_sched_job_cleanup is called
when needed. :)
Regards,
Lucas
> -Daniel
>
> >
> > Thanks, Daniel
> >
> > >
> > > Regards,
> > > Lucas
> > >
> > > > ret = submit_lookup_objects(submit, file, bos, args->nr_bos);
> > > > if (ret)
> > > > goto err_submit_objects;
> > > > @@ -549,11 +547,15 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
> > > > }
> > > >
> > > > if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) {
> > > > - submit->in_fence = sync_file_get_fence(args->fence_fd);
> > > > - if (!submit->in_fence) {
> > > > + struct dma_fence *in_fence = sync_file_get_fence(args->fence_fd);
> > > > + if (!in_fence) {
> > > > ret = -EINVAL;
> > > > goto err_submit_objects;
> > > > }
> > > > +
> > > > + ret = drm_sched_job_await_fence(&submit->sched_job, in_fence);
> > > > + if (ret)
> > > > + goto err_submit_objects;
> > > > }
> > > >
> > > > ret = submit_pin_objects(submit);
> > > > @@ -579,7 +581,7 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
> > > > if (ret)
> > > > goto err_submit_objects;
> > > >
> > > > - ret = etnaviv_sched_push_job(&ctx->sched_entity[args->pipe], submit);
> > > > + ret = etnaviv_sched_push_job(submit);
> > > > if (ret)
> > > > goto err_submit_objects;
> > > >
> > > > diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.c b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> > > > index 180bb633d5c5..c98d67320be3 100644
> > > > --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> > > > +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.c
> > > > @@ -17,58 +17,6 @@ module_param_named(job_hang_limit, etnaviv_job_hang_limit, int , 0444);
> > > > static int etnaviv_hw_jobs_limit = 4;
> > > > module_param_named(hw_job_limit, etnaviv_hw_jobs_limit, int , 0444);
> > > >
> > > > -static struct dma_fence *
> > > > -etnaviv_sched_dependency(struct drm_sched_job *sched_job,
> > > > - struct drm_sched_entity *entity)
> > > > -{
> > > > - struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
> > > > - struct dma_fence *fence;
> > > > - int i;
> > > > -
> > > > - if (unlikely(submit->in_fence)) {
> > > > - fence = submit->in_fence;
> > > > - submit->in_fence = NULL;
> > > > -
> > > > - if (!dma_fence_is_signaled(fence))
> > > > - return fence;
> > > > -
> > > > - dma_fence_put(fence);
> > > > - }
> > > > -
> > > > - for (i = 0; i < submit->nr_bos; i++) {
> > > > - struct etnaviv_gem_submit_bo *bo = &submit->bos[i];
> > > > - int j;
> > > > -
> > > > - if (bo->excl) {
> > > > - fence = bo->excl;
> > > > - bo->excl = NULL;
> > > > -
> > > > - if (!dma_fence_is_signaled(fence))
> > > > - return fence;
> > > > -
> > > > - dma_fence_put(fence);
> > > > - }
> > > > -
> > > > - for (j = 0; j < bo->nr_shared; j++) {
> > > > - if (!bo->shared[j])
> > > > - continue;
> > > > -
> > > > - fence = bo->shared[j];
> > > > - bo->shared[j] = NULL;
> > > > -
> > > > - if (!dma_fence_is_signaled(fence))
> > > > - return fence;
> > > > -
> > > > - dma_fence_put(fence);
> > > > - }
> > > > - kfree(bo->shared);
> > > > - bo->nr_shared = 0;
> > > > - bo->shared = NULL;
> > > > - }
> > > > -
> > > > - return NULL;
> > > > -}
> > > > -
> > > > static struct dma_fence *etnaviv_sched_run_job(struct drm_sched_job *sched_job)
> > > > {
> > > > struct etnaviv_gem_submit *submit = to_etnaviv_submit(sched_job);
> > > > @@ -140,14 +88,12 @@ static void etnaviv_sched_free_job(struct drm_sched_job *sched_job)
> > > > }
> > > >
> > > > static const struct drm_sched_backend_ops etnaviv_sched_ops = {
> > > > - .dependency = etnaviv_sched_dependency,
> > > > .run_job = etnaviv_sched_run_job,
> > > > .timedout_job = etnaviv_sched_timedout_job,
> > > > .free_job = etnaviv_sched_free_job,
> > > > };
> > > >
> > > > -int etnaviv_sched_push_job(struct drm_sched_entity *sched_entity,
> > > > - struct etnaviv_gem_submit *submit)
> > > > +int etnaviv_sched_push_job(struct etnaviv_gem_submit *submit)
> > > > {
> > > > int ret = 0;
> > > >
> > > > @@ -158,11 +104,6 @@ int etnaviv_sched_push_job(struct drm_sched_entity *sched_entity,
> > > > */
> > > > mutex_lock(&submit->gpu->fence_lock);
> > > >
> > > > - ret = drm_sched_job_init(&submit->sched_job, sched_entity,
> > > > - submit->ctx);
> > > > - if (ret)
> > > > - goto out_unlock;
> > > > -
> > > > drm_sched_job_arm(&submit->sched_job);
> > > >
> > > > submit->out_fence = dma_fence_get(&submit->sched_job.s_fence->finished);
> > > > diff --git a/drivers/gpu/drm/etnaviv/etnaviv_sched.h b/drivers/gpu/drm/etnaviv/etnaviv_sched.h
> > > > index c0a6796e22c9..baebfa069afc 100644
> > > > --- a/drivers/gpu/drm/etnaviv/etnaviv_sched.h
> > > > +++ b/drivers/gpu/drm/etnaviv/etnaviv_sched.h
> > > > @@ -18,7 +18,6 @@ struct etnaviv_gem_submit *to_etnaviv_submit(struct drm_sched_job *sched_job)
> > > >
> > > > int etnaviv_sched_init(struct etnaviv_gpu *gpu);
> > > > void etnaviv_sched_fini(struct etnaviv_gpu *gpu);
> > > > -int etnaviv_sched_push_job(struct drm_sched_entity *sched_entity,
> > > > - struct etnaviv_gem_submit *submit);
> > > > +int etnaviv_sched_push_job(struct etnaviv_gem_submit *submit);
> > > >
> > > > #endif /* __ETNAVIV_SCHED_H__ */
> > >
> > >
> >
> >
> > --
> > Daniel Vetter
> > Software Engineer, Intel Corporation
> > http://blog.ffwll.ch
>
>
>
