* RE: cpu hotplug sleeping from invalid context
@ 2006-05-23 14:12 shin, jacob
0 siblings, 0 replies; 5+ messages in thread
From: shin, jacob @ 2006-05-23 14:12 UTC (permalink / raw)
To: Ashok Raj, Dave Jones; +Cc: Linux Kernel, akpm
On Tuesday, May 23, 2006 12:42 AM Ashok Raj wrote:
> On Mon, May 22, 2006 at 11:35:34AM -0700, Dave Jones wrote:
>>
>> (2.6.17rc4-git9)
>>
>> echo 0 > /sys/devices/system/cpu/cpu1/online
>> echo 1 > /sys/devices/system/cpu/cpu1/online
>>
>> on my dual-core notebook gets me this:
>>
>
> I was just purging my inbox this morning, and saw a similar report
> from Jacob Shin in the x86-64 discuss list. When i checked with
> him, he replied that this is now resolved. I didnt ask what it
> was... Jacob could you send a pointer to the fix?
http://lkml.org/lkml/2006/4/28/142
It was a simply null pointer fix.
-Jacob
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: cpu hotplug sleeping from invalid context
2006-05-22 18:35 Dave Jones
2006-05-23 5:42 ` Ashok Raj
2006-05-23 5:56 ` Ashok Raj
@ 2006-05-23 19:54 ` Nathan Lynch
2 siblings, 0 replies; 5+ messages in thread
From: Nathan Lynch @ 2006-05-23 19:54 UTC (permalink / raw)
To: Dave Jones, Linux Kernel
Dave Jones wrote:
> (2.6.17rc4-git9)
>
> echo 0 > /sys/devices/system/cpu/cpu1/online
> echo 1 > /sys/devices/system/cpu/cpu1/online
>
> on my dual-core notebook gets me this:
>
> CPU 1 is now offline
> SMP alternatives: switching to UP code
> SMP alternatives: switching to SMP code
> Booting processor 1/1 eip 3000
> CPU 1 irqstacks, hard=c0799000 soft=c0779000
> Initializing CPU#1
> BUG: sleeping function called from invalid context at mm/page_alloc.c:945
> in_atomic():0, irqs_disabled():1
> <c04500ce> __alloc_pages+0x32/0x2a8
> <c0425577> printk+0x1f/0xaf
> <c060674d> schedule+0xa21/0xa8a
> <c04503a6> get_zeroed_page+0x31/0x3d
> <c040a117> cpu_init+0x10a/0x323
> <c04176f5> start_secondary+0xc/0x3ef
> <c0417afa> cpu_exit_clear+0x22/0x43
I think it's caused by arch/i386/kernel/cpu/common.c::cpu_init() doing
get_zeroed_page(GFP_KERNEL).
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: cpu hotplug sleeping from invalid context
2006-05-22 18:35 Dave Jones
2006-05-23 5:42 ` Ashok Raj
@ 2006-05-23 5:56 ` Ashok Raj
2006-05-23 19:54 ` Nathan Lynch
2 siblings, 0 replies; 5+ messages in thread
From: Ashok Raj @ 2006-05-23 5:56 UTC (permalink / raw)
To: Dave Jones; +Cc: Linux Kernel, akpm, jacob.shin
On Mon, May 22, 2006 at 11:35:34AM -0700, Dave Jones wrote:
>
> (2.6.17rc4-git9)
>
> echo 0 > /sys/devices/system/cpu/cpu1/online
> echo 1 > /sys/devices/system/cpu/cpu1/online
>
> on my dual-core notebook gets me this:
>
Ok, i just tried on my Centrino core duo, and the same online/offline
works just fine for me on git-10. I havent tried git-9 though... could you
give git10 a try?
ashok
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: cpu hotplug sleeping from invalid context
2006-05-22 18:35 Dave Jones
@ 2006-05-23 5:42 ` Ashok Raj
2006-05-23 5:56 ` Ashok Raj
2006-05-23 19:54 ` Nathan Lynch
2 siblings, 0 replies; 5+ messages in thread
From: Ashok Raj @ 2006-05-23 5:42 UTC (permalink / raw)
To: Dave Jones; +Cc: Linux Kernel, jacob.shin, akpm
On Mon, May 22, 2006 at 11:35:34AM -0700, Dave Jones wrote:
>
> (2.6.17rc4-git9)
>
> echo 0 > /sys/devices/system/cpu/cpu1/online
> echo 1 > /sys/devices/system/cpu/cpu1/online
>
> on my dual-core notebook gets me this:
>
I was just purging my inbox this morning, and saw a similar report from
Jacob Shin in the x86-64 discuss list. When i checked with him, he replied
that this is now resolved. I didnt ask what it was... Jacob could you
send a pointer to the fix?
Cheers,
ashok
^ permalink raw reply [flat|nested] 5+ messages in thread
* cpu hotplug sleeping from invalid context
@ 2006-05-22 18:35 Dave Jones
2006-05-23 5:42 ` Ashok Raj
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Dave Jones @ 2006-05-22 18:35 UTC (permalink / raw)
To: Linux Kernel
(2.6.17rc4-git9)
echo 0 > /sys/devices/system/cpu/cpu1/online
echo 1 > /sys/devices/system/cpu/cpu1/online
on my dual-core notebook gets me this:
CPU 1 is now offline
SMP alternatives: switching to UP code
SMP alternatives: switching to SMP code
Booting processor 1/1 eip 3000
CPU 1 irqstacks, hard=c0799000 soft=c0779000
Initializing CPU#1
BUG: sleeping function called from invalid context at mm/page_alloc.c:945
in_atomic():0, irqs_disabled():1
<c04500ce> __alloc_pages+0x32/0x2a8
<c0425577> printk+0x1f/0xaf
<c060674d> schedule+0xa21/0xa8a
<c04503a6> get_zeroed_page+0x31/0x3d
<c040a117> cpu_init+0x10a/0x323
<c04176f5> start_secondary+0xc/0x3ef
<c0417afa> cpu_exit_clear+0x22/0x43
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2006-05-23 19:54 UTC | newest]
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2006-05-23 14:12 cpu hotplug sleeping from invalid context shin, jacob
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2006-05-23 5:42 ` Ashok Raj
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2006-05-23 19:54 ` Nathan Lynch
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