The offending commit accidentally replaces an atomic_clear with an
atomic_or instead of an atomic_andnot in kvm_s390_vcpu_request_handled.
The symptom is that kvm guests on s390 hang on startup.
This patch simply replaces the incorrect atomic_or with atomic_andnot
Signed-off-by: Jason J. Herne
de
snippets flying around all the time.
Happy coding.
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on a rq, the next wake-up will ensure we're
* placed properly.
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o you as soon as possible.
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On 05/27/2014 10:26 AM, Peter Zijlstra wrote:
On Tue, May 27, 2014 at 10:18:31AM -0400, Jason J. Herne wrote:
On 05/16/2014 12:29 PM, Peter Zijlstra wrote:
On Sat, May 17, 2014 at 12:18:06AM +0800, Lai Jiangshan wrote:
so the scheduler/set_cpus_allowed_ptr()/cpu_active_mask should be the
eeded and I'm happy to test any patches.
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gt;
/sys/bus/cpu.../online'
Otherwise, fairly idle system. load average: 5.82, 6.27, 6.27
The machine has 10 processors.
The warning message some times hits within a few minutes on starting the
workload. Other times it takes several hours.
-- Jason J. Herne (jjhe...@linux.vnet.ibm.com)
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To u
On 03/10/2014 10:37 AM, Jason J. Herne wrote:
On 02/25/2014 05:37 AM, Peter Zijlstra wrote:
On Mon, Feb 24, 2014 at 01:35:01PM -0500, Tejun Heo wrote:
That's a bummer but it at least isn't a very new regression. Peter,
any ideas on debugging this? I can make workqueue to
tend for me to run with this patch or was it posted for
discussion only? If you want it run, please tell me what to look for.
Also, if I should run this, should I include any other patches, either
the last one you posted in this thread or any of Tejun's?
Thanks.
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f hitting
the problem we are trying to solve here. What I did find is the following:
We hit this problem as far back as v3.10.
The warning was introduced after v3.5 but before v3.6.
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this issue would be very helpful.
I will try to find a kernel where this is not reproducible and attempt
bisect from there. I will let you know what I find.
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the
On 02/12/2014 10:31 PM, Lai Jiangshan wrote:
On 02/12/2014 11:18 PM, Jason J. Herne wrote:
Could you use the following patch for test if Tejun doesn't give you a new one.
Lai,
Here is the output using the patch you asked me to run with.
[ 5779.795687] [ cut
On 02/10/2014 06:17 PM, Tejun Heo wrote:
Hello,
On Mon, Feb 10, 2014 at 10:32:11AM -0500, Jason J. Herne wrote:
[ 950.778485] XXX: worker->flags=0x1 pool->flags=0x0 cpu=6
pool->cpu=2 rescue_wq= (null)
[ 950.778488] XXX: last_unbind=-7 last_rebind=0
last_reboun
On 02/07/2014 02:36 PM, Tejun Heo wrote:
Hello,
On Fri, Feb 07, 2014 at 12:55:28PM -0500, Jason J. Herne wrote:
[ 644.517710] XXX: worker->flags=0x1 pool->flags=0x0 cpu=6 pool->cpu=4
[ 731.367023] XXX: worker->flags=0x1 pool->flags=0x0 cpu=1 pool->cpu=7
Sorry, still no
ess_one_work+0x4c6/0x4ec
[ 644.517707] ---[ end trace 681ce8162e7857a0 ]---
[ 644.517710] XXX: worker->flags=0x1 pool->flags=0x0 cpu=6 pool->cpu=4
[ 731.367023] XXX: worker->flags=0x1 pool->flags=0x0 cpu=1 pool->cpu=7
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To uns
s & WORKER_UNBOUND) &&
!(pool->flags & POOL_DISASSOCIATED) &&
raw_smp_processor_id() != pool->cpu);
I'm not familiar with scheduling or work queuing internals so I'm not
sure how to further debug.
I would be happy
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