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

Christian König christian.koenig at amd.com
Fri Nov 3 07:48:23 UTC 2017


Patch #4 is Reviewed-by: Christian König <christian.koenig at amd.com>.

The rest is Acked-by: Christian König <christian.koenig at amd.com>.

Regards,
Christian.

Am 02.11.2017 um 21:03 schrieb Ville Syrjala:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> 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 at redhat.com>
> Cc: Jason Ekstrand <jason at jlekstrand.net>
> Cc: linaro-mm-sig at lists.linaro.org
> Cc: linux-media at vger.kernel.org
> Cc: Alex Deucher <alexander.deucher at amd.com>
> Cc: Christian König <christian.koenig at amd.com>
> Cc: Sumit Semwal <sumit.semwal at linaro.org>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
>
> 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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