On pe, 2017-01-27 at 13:06 +0000, Chris Wilson wrote: > A very rare problem we encounter is that as retire the request we find we -^ > that it appears to not have been yet executed. Other than malevolent hw, > one possible explanation is that the update of the fence status on one > cpu (an atomic_dec_and_test) is not yet visible to the retiree on > another cpu. However, since retirement is serialised with execution via > a fence-local spinlock, we can use these to ensure that we have
But it uses timeline spinlock? > sufficient barriers between the execution and the assert in retirement. > > Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> Regards, Joonas -- Joonas Lahtinen Open Source Technology Center Intel Corporation _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
