From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: 2.6.21-rc5: swsusp: Not enough free memory Date: Mon, 2 Apr 2007 23:18:27 +0200 Message-ID: <200704022318.28451.rjw@sisk.pl> References: <460B6E4B.3060004@gmail.com> <200704012123.54797.rjw@sisk.pl> <4610BDD7.5070201@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <4610BDD7.5070201@gmail.com> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: Jiri Slaby Cc: linux-pm@lists.osdl.org, Linux kernel mailing list List-Id: linux-pm@vger.kernel.org On Monday, 2 April 2007 10:24, Jiri Slaby wrote: > Rafael J. Wysocki napsal(a): > >>> On Thursday, 29 March 2007 09:44, Jiri Slaby wrote: > >>>> swsusp: critical section: > >>>> swsusp: Need to copy 131380 pages > >>>> swsusp: Not enough free memory > >>>> Error -12 suspending > >>>> Enabling non-boot CPUs ... > = > > As a workaround, you can try to change the initial image size so that i= t's > > smaller than a half of the RAM size. If that works, I'd like to send y= ou a > > debug patch, if you don't mind. :-) > = > Yes, post it. Appended. Please send me the dmesg output from after a failing suspend (or in case it doesn't fail, from after the first one). > # cat /sys/power/image_size > 524288000 > # echo disk >/sys/power/state > error > # echo disk >/sys/power/state > error > # echo $((400*1024*1024)) > /sys/power/image_size > # echo disk >/sys/power/state > ok > # dmesg|grep Memory: > Memory: 1027160k/1048256k available (2559k kernel code, 20348k reserved, > 1114k data, 188k init) > = > I don't undestand it too much, but can't be shared video memory involved > somehow? No, I don't think so. There probably is a bug in swsusp_shrink_memory(). Greetings, Rafael --- --- kernel/power/snapshot.c | 2 +- kernel/power/swsusp.c | 10 +++++++--- 2 files changed, 8 insertions(+), 4 deletions(-) Index: linux-2.6.21-rc5/kernel/power/snapshot.c =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- linux-2.6.21-rc5.orig/kernel/power/snapshot.c +++ linux-2.6.21-rc5/kernel/power/snapshot.c @@ -1093,7 +1093,7 @@ static int enough_free_mem(unsigned int = } = nr_pages +=3D count_pages_for_highmem(nr_highmem); - pr_debug("swsusp: Normal pages needed: %u + %u + %u, available pages: %u\= n", + printk("swsusp: Normal pages needed: %u + %u + %u, available pages: %u\n", nr_pages, PAGES_FOR_IO, meta, free); = return free > nr_pages + PAGES_FOR_IO + meta; Index: linux-2.6.21-rc5/kernel/power/swsusp.c =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- linux-2.6.21-rc5.orig/kernel/power/swsusp.c +++ linux-2.6.21-rc5/kernel/power/swsusp.c @@ -227,22 +227,26 @@ int swsusp_shrink_memory(void) size =3D count_data_pages() + PAGES_FOR_IO; tmp =3D size; size +=3D highmem_size; - for_each_zone (zone) + for_each_zone (zone) { + printk("Normal pages needed: %lu\n", tmp); + printk("Highmem pages needed: %lu\n", highmem_size); if (populated_zone(zone)) { + tmp +=3D snapshot_additional_pages(zone); if (is_highmem(zone)) { highmem_size -=3D zone_page_state(zone, NR_FREE_PAGES); } else { tmp -=3D zone_page_state(zone, NR_FREE_PAGES); tmp +=3D zone->lowmem_reserve[ZONE_NORMAL]; - tmp +=3D snapshot_additional_pages(zone); } } + } = if (highmem_size < 0) highmem_size =3D 0; = tmp +=3D highmem_size; + printk("Pages needed (total): %lu\n", tmp); if (tmp > 0) { tmp =3D __shrink_memory(tmp); if (!tmp) @@ -252,7 +256,7 @@ int swsusp_shrink_memory(void) tmp =3D __shrink_memory(size - (image_size / PAGE_SIZE)); pages +=3D tmp; } - printk("\b%c", p[i++%4]); + /*printk("\b%c", p[i++%4]);*/ } while (tmp > 0); do_gettimeofday(&stop); printk("\bdone (%lu pages freed)\n", pages);