Re: unpinning an unpinned lock

From	Sasha Levin <sasha.levin@oracle.com>
Newsgroups	linux.kernel
Subject	Re: unpinning an unpinned lock
Date	2015-09-18 15:40 +0200
Message-ID	<qa43o-41T-19@gated-at.bofh.it> (permalink)
References	<q96gW-1l3-5@gated-at.bofh.it> <q96gW-1l3-3@gated-at.bofh.it> <q9iL8-2Ej-21@gated-at.bofh.it> <q9lJ1-6Rv-31@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On 09/16/2015 10:10 AM, Peter Zijlstra wrote:
> On Wed, Sep 16, 2015 at 12:55:35PM +0200, Peter Zijlstra wrote:
> 
>> > In any case, I'll have another go at tackling this, otherwise I'll have
>> > to disable this warning for now.
>> > 
>> > Note that this lockdep 'feature' is pure annotation, no actual logic was
>> > changed.
> Sasha, can you give this a spin?
> 
> So there's 2 places where we take a lock out of the middle of a stack,
> and in those cases it would fail to preserve the pin_count.

The patch fixes the issue for me:

	Tested-by: Sasha Levin <sasha.levin@oracle.com>


Thanks,
Sasha
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Re: unpinning an unpinned lock "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2015-09-15 23:50 +0200
  Re: unpinning an unpinned lock Peter Zijlstra <peterz@infradead.org> - 2015-09-16 13:10 +0200
    Re: unpinning an unpinned lock Peter Zijlstra <peterz@infradead.org> - 2015-09-16 16:20 +0200
      Re: unpinning an unpinned lock Sasha Levin <sasha.levin@oracle.com> - 2015-09-18 15:40 +0200

csiph-web