> -----Original Message----- > From: daniel.vetter@xxxxxxxx [mailto:daniel.vetter@xxxxxxxx] On Behalf Of > Daniel Vetter > Sent: Thursday, November 20, 2014 12:51 PM > To: Chris Wilson; Daniel, Thomas; intel-gfx@xxxxxxxxxxxxxxxxxxxxx; akash goel > (akash.goels@xxxxxxxxx) > Subject: Re: [PATCH] drm/i915: Don't pin LRC in GGTT when > dumping in debugfs > > On Thu, Nov 20, 2014 at 1:28 PM, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > wrote: > >> Can you identify any situation where the pages may go away? > > > > Anytime you trigger an allocation, the system may reap any objects > > pages. It will even steal the dev->struct_mutex. To protect against > > the shrinker you have to call pin_pages(). Here, there are no > > allocations inside the loop and so you don't need to worry about the > > shrinker stealing your pages. > > Hm actually I think better safe than sorry here. At least I have > (again) completely forgotten about our dear shrinker ... > -Daniel Does this discussion count as a review? What was the conclusion - do I need to make a version without pinning or is it better safe than sorry? Cheers, Thomas. > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
