Re: [PATCH 0/4] dma-buf: Silence dma_fence __rcu sparse warnings

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Patch #4 is Reviewed-by: Christian König <christian.koenig@xxxxxxx>.

The rest is Acked-by: Christian König <christian.koenig@xxxxxxx>.

Regards,
Christian.

Am 02.11.2017 um 21:03 schrieb Ville Syrjala:
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

When building drm+i915 I get around 150 lines of sparse noise from
dma_fence __rcu warnings. This series eliminates all of that.

The first two patches were already posted by Chris, but there wasn't
any real reaction, so I figured I'd repost with a wider Cc list.

As for the other two patches, I'm no expert on dma_fence and I didn't
spend a lot of time looking at it so I can't be sure I annotated all
the accesses correctly. But I figured someone will scream at me if
I got it wrong ;)

Cc: Dave Airlie <airlied@xxxxxxxxxx>
Cc: Jason Ekstrand <jason@xxxxxxxxxxxxxx>
Cc: linaro-mm-sig@xxxxxxxxxxxxxxxx
Cc: linux-media@xxxxxxxxxxxxxxx
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Christian König <christian.koenig@xxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>

Chris Wilson (2):
   drm/syncobj: Mark up the fence as an RCU protected pointer
   dma-buf/fence: Sparse wants __rcu on the object itself

Ville Syrjälä (2):
   drm/syncobj: Use proper methods for accessing rcu protected pointers
   dma-buf: Use rcu_assign_pointer() to set rcu protected pointers

  drivers/dma-buf/reservation.c |  2 +-
  drivers/gpu/drm/drm_syncobj.c | 11 +++++++----
  include/drm/drm_syncobj.h     |  2 +-
  include/linux/dma-fence.h     |  2 +-
  4 files changed, 10 insertions(+), 7 deletions(-)





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