Re: broken suspend (sched related) [Was: 2.6.24-rc4-mm1]


* Jiri Slaby <jirislaby@xxxxxxxxx> wrote:

On 12/05/2007 06:17 AM, Andrew Morton wrote:
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.24-rc4/2.6.24-rc4-mm1/

git-sched.patch

breaks suspend here since -rc3-mm2. More precisely, this one:
softlockup: automatically detect hung TASK_UNINTERRUPTIBLE tasks

2.6.24-rc4-mm1 minus this one works just fine. Otherwise disks stop, graphics
stops and then it hangs not powering down.

Core 2 Duo, SMP kernel, voluntary preempt, 250 HZ, SLUB, 64 bit.

Ideas?

thanks for tracking it down. Does the patch below help?

Ingo

---
kernel/softlockup.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

Index: linux/kernel/softlockup.c
===================================================================
--- linux.orig/kernel/softlockup.c
+++ linux/kernel/softlockup.c
@@ -101,7 +101,11 @@ void softlockup_tick(void)

now = get_timestamp(this_cpu);

- /* Warn about unreasonable delays: */
+ /* Wake up the high-prio watchdog task every second: */
+ if (now > (touch_timestamp + 1))
+ wake_up_process(per_cpu(watchdog_task, this_cpu));
+
+ /* Warn about unreasonable 10+ seconds delays: */
if (now <= (touch_timestamp + softlockup_thresh))
return;

@@ -214,7 +218,7 @@ static int watchdog(void *__bind_cpu)
*/
while (!kthread_should_stop()) {
touch_softlockup_watchdog();
- msleep_interruptible(10000);
+ schedule();

/*
* Only do the hung-tasks check on one CPU:
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

Relevant Pages

  • broken suspend (sched related) [Was: 2.6.24-rc4-mm1]
    ... 2.6.24-rc4-mm1 minus this one works just fine. ... Otherwise disks stop, graphics ... stops and then it hangs not powering down. ...
    (Linux-Kernel)
  • Im missing Essential Tungsten W software
    ... disks, I'd even toss a few dollars in trade of said disks. ... A good telnet program that recognizes the highdef graphics screen. ... Both ptelnet and Palm Telnet work, but I only get 40 columns in that ... And does anyknow know of NR Deluxe actually works with the T|W? ...
    (comp.sys.palmtops.pilot)
  • RE: [SLE] suse-9.0 on 486 ?
    ... Peer Stefan wrote: ... graphics won't be a problem. ... But the size of your disks and ... > the speed of the cpu might become a very thin bottleneck. ...
    (SuSE)
  • RE: printing problem with particular documents
    ... replacing it, but it still gives the printer indigestion. ... stops, try cutting it out of the document, pasting ... it into a graphics program, and saving it as something else (JPEGs work ...
    (microsoft.public.word.docmanagement)
  • pasting web pages in word
    ... I can paste webpages (minus the graphics) into notebook ok. ...
    (microsoft.public.word.docmanagement)