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SubjectRe: 2.6.30-git(16 and 17) system hangs after resume from suspend to disk, mce related?
Peter, could you put this patch into urgent too? 

Thanks,
H.Seto

===

[PATCH] x86, mce: percpu mcheck_timer should be pinned

Maciej Rutecki wrote:
> > After normal boot I try:
> >
> > echo 1 > /sys/devices/system/machinecheck/machinecheck0/check_interval
> >
> > I found this in dmesg:
> >
> > [ 141.704025] ------------[ cut here ]------------
> > [ 141.704039] WARNING: at arch/x86/kernel/cpu/mcheck/mce.c:1102
> > mcheck_timer+0xf5/0x100()

If CONFIG_NO_HZ + CONFIG_SMP, timer added via add_timer() might
be migrated on other cpu. Use add_timer_on() instead.

Reported-by: Maciej Rutecki <maciej.rutecki@gmail.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Tested-by Maciej Rutecki <maciej.rutecki@gmail.com>
CC: Andi Kleen <ak@linux.intel.com>
---
arch/x86/kernel/cpu/mcheck/mce.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 7da8fec..8e1794a 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1117,7 +1117,7 @@ static void mcheck_timer(unsigned long data)
*n = min(*n*2, (int)round_jiffies_relative(check_interval*HZ));

t->expires = jiffies + *n;
- add_timer(t);
+ add_timer_on(t, smp_processor_id());
}

static void mce_do_trigger(struct work_struct *work)
@@ -1321,7 +1321,7 @@ static void mce_init_timer(void)
return;
setup_timer(t, mcheck_timer, smp_processor_id());
t->expires = round_jiffies(jiffies + *n);
- add_timer(t);
+ add_timer_on(t, smp_processor_id());
}

/*
--
1.6.3


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