Re: [GIT PULL rcu/next] rcu commits for 2.6.40

From: Ingo Molnar
Date: Mon May 16 2011 - 10:30:22 EST

* Ingo Molnar <mingo@xxxxxxx> wrote:

> > I'll try it in any case.
> oh, this was a new iteration, mea culpa!
> And yes, it solves all problems for me as well. Mind pushing it as a fix? :-)

FYI, i am also getting the warning below with a defconfig.


initcall init_per_zone_wmark_min+0x0/0x5b returned 0 after 41 usecs
calling kswapd_init+0x0/0x1d @ 1
------------[ cut here ]------------
WARNING: at kernel/rcutree.c:364 rcu_enter_nohz+0x4f/0x60()
Hardware name: System Product Name
Modules linked in:
Pid: 0, comm: swapper Not tainted 2.6.39-rc7-tip-03260-gb177656-dirty #126707
Call Trace:
[<c13974b6>] ? printk+0x18/0x1a
[<c1038f0d>] warn_slowpath_common+0x6d/0xa0
[<c1089bdf>] ? rcu_enter_nohz+0x4f/0x60
[<c1089bdf>] ? rcu_enter_nohz+0x4f/0x60
[<c1038f5d>] warn_slowpath_null+0x1d/0x20
[<c1089bdf>] rcu_enter_nohz+0x4f/0x60
[<c10639ca>] tick_nohz_stop_sched_tick+0x22a/0x470
[<c1001685>] cpu_idle+0x65/0xe0
[<c137d789>] rest_init+0xa1/0xa8
[<c137d6e8>] ? reciprocal_value+0x48/0x48
[<c156a6ef>] start_kernel+0x303/0x30b
[<c156a1fd>] ? obsolete_checksetup+0x95/0x95
[<c156a067>] i386_start_kernel+0x67/0x6d
---[ end trace fe4ebffb2b8ff187 ]---
initcall kswapd_init+0x0/0x1d returned 0 after 70614 usecs
calling extfrag_debug_init+0x0/0x78 @ 1
initcall extfrag_debug_init+0x0/0x78 returned 0 after 79 usecs
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