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2016-11-05add libsync.h helperRob Clark1-0/+148
Rather than cut/pasting these couple ioctl wrappers everywhere, just stuff them as static-inline into a header. This is probably mostly used from mesa, but some drivers, test apps, etc may also want to use it from libdrm. v2: handle EINTR, add sync_accumulate() based on #dri-devel discussion, etc Signed-off-by: Rob Clark <robclark@freedesktop.org> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>