On Fri, Dec 13, 2019 at 12:10 PM Daniel Vetter wrote:
>
> On Mon, Nov 25, 2019 at 10:43:56AM +0100, Daniel Vetter wrote:
> > I'll add more fancy logic to them soon, so everyone really has to use
> > them. Plus they already provide some nice additional debug
> > infrastructure on top of direct ww_mutex usage for the fences tracked
> > by dma_resv.
> >
> > Signed-off-by: Daniel Vetter
>
> Ping for some review/acks.
>
> Thanks, Daniel
>
> > ---
> > drivers/gpu/drm/vc4/vc4_gem.c | 11 +--
> > 1 file changed, 5 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c
> > index 7a06cb6e31c5..e1cfc3ccd05a 100644
> > --- a/drivers/gpu/drm/vc4/vc4_gem.c
> > +++ b/drivers/gpu/drm/vc4/vc4_gem.c
> > @@ -568,7 +568,7 @@ vc4_unlock_bo_reservations(struct drm_device *dev,
> > for (i = 0; i < exec->bo_count; i++) {
> > struct drm_gem_object *bo = >bo[i]->base;
> >
> > - ww_mutex_unlock(>resv->lock);
> > + dma_resv_unlock(bo->resv);
> > }
> >
> > ww_acquire_fini(acquire_ctx);
> > @@ -595,8 +595,7 @@ vc4_lock_bo_reservations(struct drm_device *dev,
> > retry:
> > if (contended_lock != -1) {
> > bo = >bo[contended_lock]->base;
> > - ret = ww_mutex_lock_slow_interruptible(>resv->lock,
> > -acquire_ctx);
> > + ret = dma_resv_lock_slow_interruptible(bo->resv, acquire_ctx);
> > if (ret) {
> > ww_acquire_done(acquire_ctx);
> > return ret;
> > @@ -609,19 +608,19 @@ vc4_lock_bo_reservations(struct drm_device *dev,
> >
> > bo = >bo[i]->base;
> >
> > - ret = ww_mutex_lock_interruptible(>resv->lock,
> > acquire_ctx);
> > + ret = dma_resv_lock_interruptible(bo->resv, acquire_ctx);
> > if (ret) {
> > int j;
> >
> > for (j = 0; j < i; j++) {
> > bo = >bo[j]->base;
> > - ww_mutex_unlock(>resv->lock);
> > + dma_resv_unlock(bo->resv);
> > }
> >
> > if (contended_lock != -1 && contended_lock >= i) {
> > bo = >bo[contended_lock]->base;
> >
> > - ww_mutex_unlock(>resv->lock);
> > + dma_resv_unlock(bo->resv);
> > }
> >
> > if (ret == -EDEADLK) {
> > --
> > 2.24.0
> >
Assuming they're supposed to be exactly equivalent currently,
Acked-by: Eric Anholt
but we should really just be using drm_gem_lock_reservations()
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