Re: [PATCH 2/4] Task notifier: Implement todo list in task_struct

[Pavel Machek <pavel@ucw.cz>]

Hi!

> Introduce a todo notifier in the task_struct so that a task can be told to do
> certain things. Abuse the suspend hooks try_to_freeze, freezing and refrigerator
> to establish checkpoints where the todo list is processed. This will break software
> suspend (next patch fixes and cleans up software suspend).

Ugh, this conflicts with stuff in -mm tree rather badly... In part
thanks to patch by you that was already applied.

I fixed up rejects manually (but probably lost fix or two in
progress), and will test.

Uff, and then it breaks suspend completely:

Jul 28 23:21:12 amd kernel: Stopping tasks:
=====================================Restarting tasks...khpsbpkt:
received unexpected signal?!
Jul 28 23:21:12 amd kernel: NodeMgr: received unexpected signal?!
Jul 28 23:21:22 amd kernel:  done
Jul 28 23:21:32 amd pam_limits[1547]: wrong limit value 'unlimited'

(Left me with basically all kernel threads going crazy:)

top - 23:22:34 up 3 min,  4 users,  load average: 5.10, 1.90, 0.69
Tasks:  48 total,   2 running,  46 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.0% us, 100.0% sy,  0.0% ni,  0.0% id,  0.0% wa,  0.0% hi,
0.0% si
Mem:   2064480k total,   155664k used,  1908816k free,    10280k
buffers
Swap:  2136448k total,        0k used,  2136448k free,   114624k
cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  273 root      25   0     0    0    0 S 21.1  0.0   0:11.24 kswapd0
  938 root      25   0     0    0    0 S 21.1  0.0   0:11.24 pccardd
  940 root      25   0     0    0    0 S 21.1  0.0   0:11.30 pccardd
 1060 root      25   0     0    0    0 R 21.1  0.0   0:21.34 kjournald
 1409 root      25   0     0    0    0 S 17.3  0.0   0:19.71 kjournald

You are doing rather intrusive changes. Is testing them too much to
ask? I'm pretty sure you can get i386 machine to test swsusp on...
								Pavel
-- 
teflon -- maybe it is a trademark, but it should not be.
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