On Saturday 10 October 2009, Thomas Hellstrom wrote: > Hi! > > I'm trying to port a graphics DRM device driver over to the new power > management hooks in > > struct dev_pm_ops. > > During the "prepare" call, Video RAM contents may be copied either to > shmem objects or pages allocated using alloc_page(). > Unfortunately, this seems to lead to the hibernation process running out > of free pages. > > One possible cause is that the function swsusp_shrink_memory() is called > before the prepare() call, and therefore doesn't free up enough memory. > > What would be the correct way around this? Should swsusp_shrink_memory() > be moved to after prepare(), or is it possible to get some kind of > notification after user space processes is stopped, but before > swsusp_shrink_memory()? There are suspend/hibernation notifiers that can be used for this purpose. Thanks, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
