Quoting Daniel Vetter (2017-11-09 10:46:41) > On Thu, Nov 09, 2017 at 10:23:44AM +0000, Chris Wilson wrote: > > Quoting Chris Wilson (2017-11-09 10:21:41) > > > vm_free_page() may call down into set_pages_array_wb() (which itself > > > sleeps, on x86 at least) but only if on !llc and the caches overflow. > > > Since this is unlikely, we only rarely trigger the error in practice, > > > and so to make CI detection of this sleeping bug possible we want to > > > mark the common vm_free_page() as a potential sleep. > > > > > > > References: https://bugs.freedesktop.org/show_bug.cgi?id=103638 > > > Suggested-by: Tvrtko Ursulin <[email protected]> > > > Signed-off-by: Chris Wilson <[email protected]> > > > Cc: Tvrtko Ursulin <[email protected]> > > > Cc: Joonas Lahtinen <[email protected]> > > > Cc: Matthew Auld <[email protected]> > > > > The real test ofc is whether this reports an error from CI. > > Reviewed-by: Daniel Vetter <[email protected]> > > But if it indeed blows up on CI I think it'd be good to fix first, then > apply the more aggressive debug check. Otherwise CI and Marta will be on > fire :-)
It got a few more hits, but not across the board as I was hoping. The next place is i915_vma_unbind(). That is always a potential sleeper due to its implicit wait on the GPU. -Chris _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
