On Tue, May 08, 2012 at 08:25:38AM -0700, Linus Torvalds wrote: > On Mon, May 7, 2012 at 4:13 PM, Stéphane Marchesin <marcheu@xxxxxxxxxxxx> wrote: > > > > In the end, I came up with the ugly workaround of just leaking the > > offending pages in shmem.c. > > Don't leak it. > > Instead, add it to some RCU list, and free it using RCU. Or some > one-second timer or something. > > That kind of approach should guarantee that it > > (a) gets returned to the system > > but > > (b) the returning to the system gets delayed sufficiently that if the > i915 driver is doing lots of allocations it will be getting other > pages. > > Hmm? The problem is also that this only affects Sandybdrige gpus, so we'd need to funnel this down to shmfs somehow ... Rob Clarke from Linaro will be working on a gemfs to make backing storage allocation more flexible - they need that to support some arm gpus. That way round we wouldn't need to put some ugly drm/i915 stuff into core shmfs. Rob? -Daniel -- Daniel Vetter Mail: daniel@xxxxxxxx Mobile: +41 (0)79 365 57 48 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
