On 04/30/2013 05:36 AM, Stanislaw Gruszka wrote:
> On Tue, Apr 16, 2013 at 02:05:22PM -0700, Dave Hansen wrote:
>>> But since this (most likely) is rtime monotonicity problem it
>>> is bug by itself and probably that should be fixed. Can you 
>>> check second patch attached and see if it trigger the warning.
>>
>> Yup, it triggers lots of warnings.  Here's one.
>>
>>> [  460.789710] ------------[ cut here ]------------
>>> [  460.789730] WARNING: at 
>>> /home/davehans/linux.git/kernel/sched/cputime.c:563 
>>> cputime_adjust+0xe6/0xf0()
>>> [  460.789736] Hardware name: PRIMEQUEST 1800E2
>>> [  460.789739] Modules linked in:
>>> [  460.789745] Pid: 4245, comm: top Tainted: G        W    
>>> 3.9.0-rc7-00004-gbb33db7-dirty #19
>>> [  460.789748] Call Trace:
>>> [  460.789777]  [<ffffffff810c6dc7>] warn_slowpath_common+0xb7/0x120
>>> [  460.789783]  [<ffffffff810c6e5a>] warn_slowpath_null+0x2a/0x40
>>> [  460.789789]  [<ffffffff8111a8d6>] cputime_adjust+0xe6/0xf0
>>> [  460.789795]  [<ffffffff8111b755>] ? thread_group_cputime+0x5/0x140
>>> [  460.789800]  [<ffffffff8111bbb9>] thread_group_cputime_adjusted+0x59/0x70
> 
> Dave, could you test attached patch and check if make warnings gone.
> Patch is not right fix, but if it prevent the warnings, this will
> give clue where the problem can be.

Does this have any relation to the other four -tip patches you also
posted?  What do you want this applied on top of?

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