On Monday, 23 April 2007 00:22, Nigel Cunningham wrote: > Hi. > > On Sun, 2007-04-22 at 11:37 +0200, Rafael J. Wysocki wrote: > > On Sunday, 22 April 2007 01:31, Nigel Cunningham wrote: > > > Hi. > > > > > > On Sun, 2007-04-22 at 00:05 +0200, Rafael J. Wysocki wrote: > > > > From: Rafael J. Wysocki <rjw@xxxxxxx> > > > > > > > > Move the definition of PAGES_FOR_IO to kernel/power/power.h and introduce > > > > SPARE_PAGES representing the number of pages that should be freed by the > > > > swsusp's memory shrinker in addition to PAGES_FOR_IO so that device drivers can > > > > allocate some memory (up to 1 MB total) in their .suspend() routines without > > > > causing the suspend to fail. > > > > > > 1MB is not going to be enough for people with DRI. I have a cycle on my > > > machine recording 3510 extra pages (13 meg) allocated during the atomic > > > copy, and I know there are others with larger numbers. > > > > I know. The other mechanism (ie. notifiers) is for them. > > > > The idea of this patch is to make it possible to _avoid_ using the notifiers > > if you need only a limited amount of memory. > > That's fine when the notifiers are actually used, but for the moment.... I know, but if I make SPARE_PAGES large enough for everyone, then no one will have any reason to use the notifiers. :-) Greetings, Rafael _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
