| Message ID | 1470926782-22250-5-git-send-email-chris@chris-wilson.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Reviewed-by: Sinclair Yeh <syeh@vmware.com> On Thu, Aug 11, 2016 at 03:46:22PM +0100, Chris Wilson wrote: > Since fence_wait_timeout_reservation_object_wait_timeout_rcu() with a > timeout of 0 becomes reservation_object_test_signaled_rcu(), we do not > need to handle such conversion in the caller. The only challenge are > those callers that wish to differentiate the error code between the > nonblocking busy check and potentially blocking wait. > > Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> > Cc: Sinclair Yeh <syeh@vmware.com> > Cc: Thomas Hellstrom <thellstrom@vmware.com> > --- > drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 6 ++---- > 1 file changed, 2 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c > index 6a328d507a28..afda2a57a094 100644 > --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c > +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c > @@ -574,10 +574,8 @@ static int vmw_user_dmabuf_synccpu_grab(struct vmw_user_dma_buffer *user_bo, > bool nonblock = !!(flags & drm_vmw_synccpu_dontblock); > long lret; > > - if (nonblock) > - return reservation_object_test_signaled_rcu(bo->resv, true) ? 0 : -EBUSY; > - > - lret = reservation_object_wait_timeout_rcu(bo->resv, true, true, MAX_SCHEDULE_TIMEOUT); > + lret = reservation_object_wait_timeout_rcu(bo->resv, true, true, > + nonblock ? 0 :MAX_SCHEDULE_TIMEOUT); > if (!lret) > return -EBUSY; > else if (lret < 0) > -- > 2.8.1 >
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c index 6a328d507a28..afda2a57a094 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c @@ -574,10 +574,8 @@ static int vmw_user_dmabuf_synccpu_grab(struct vmw_user_dma_buffer *user_bo, bool nonblock = !!(flags & drm_vmw_synccpu_dontblock); long lret; - if (nonblock) - return reservation_object_test_signaled_rcu(bo->resv, true) ? 0 : -EBUSY; - - lret = reservation_object_wait_timeout_rcu(bo->resv, true, true, MAX_SCHEDULE_TIMEOUT); + lret = reservation_object_wait_timeout_rcu(bo->resv, true, true, + nonblock ? 0 :MAX_SCHEDULE_TIMEOUT); if (!lret) return -EBUSY; else if (lret < 0)
Since fence_wait_timeout_reservation_object_wait_timeout_rcu() with a timeout of 0 becomes reservation_object_test_signaled_rcu(), we do not need to handle such conversion in the caller. The only challenge are those callers that wish to differentiate the error code between the nonblocking busy check and potentially blocking wait. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Sinclair Yeh <syeh@vmware.com> Cc: Thomas Hellstrom <thellstrom@vmware.com> --- drivers/gpu/drm/vmwgfx/vmwgfx_resource.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)