linux-kernel - Re: 3.0-git15 Atomic scheduling in pidmap

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Message-ID: <20110818221920.GR2227@zod.bos.redhat.com>
Date:	Thu, 18 Aug 2011 18:19:20 -0400
From:	Josh Boyer <jwboyer@...hat.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: 3.0-git15 Atomic scheduling in pidmap_init

On Thu, Aug 18, 2011 at 02:23:34PM -0700, Paul E. McKenney wrote:
> > > I am sorry, but I didn't make the rules!  And I must carry the fix
> > > longer as well, if that makes you feel any better.
> > 
> > bah, we're not that anal.  The patch fixes a bug and prevents a nasty
> > warning spew.  Please, send it to Linus.
> 
> Given your Acked-by and Josh's Tested-by I might consider it.  ;-)
> 
> Speaking of which, Josh, does this patch help Nicolas and Michal?

Yes, it did.  The bug is closed because I included the patch.  (I could
recreate it myself as well.)

> > We appear to be referring to the patch "rcu: Avoid having just-onlined
> > CPU resched itself when RCU is idle"?  If so, the changelog doesn't
> > even mention that the patch fixes a scheduling-while-atomic warning and
> > the changelog fails to refer to the redhat bug report.  These omissions
> > should be repaired, please.
> 
> OK...  But I cannot bring myself to believe that my fix does more than
> hide some other bug.  Which is OK, I will just say that in the changelog.

I looked for this other bug myself for a while.  I couldn't find it.

josh
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