linux-kernel - Re: [PATCH] cpuidle : fix random hangs with intel

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Message-ID: <alpine.LSU.2.00.1203141720360.2003@eggly.anvils>
Date:	Wed, 14 Mar 2012 17:23:26 -0700 (PDT)
From:	Hugh Dickins <hughd@...gle.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
cc:	Daniel Lezcano <daniel.lezcano@...aro.org>,
	akpm@...ux-foundation.org, rob.lee@...aro.org, j-pihet@...com,
	khilman@...com, deepthi@...ux.vnet.ibm.com,
	dan.carpenter@...cle.com, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org, amit.kucheria@...aro.org
Subject: Re: [PATCH] cpuidle : fix random hangs with intel_idle

On Thu, 15 Mar 2012, Stephen Rothwell wrote:
> On Thu, 15 Mar 2012 01:09:41 +0100 Daniel Lezcano <daniel.lezcano@...aro.org> wrote:
> >
> > The cpuidle consolidation inverts the local_irq_enable for
> > the poll_idle function with CPU_RELAX.
> > 
> > Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> > Reported-by: Hugh Dickins <hughd@...gle.com>
> 
> So this needs to go into Rob's tree.  Maybe after Hugh verifies that it
> fixes his problem.

Yes, Daniel got me to try it offline before he posted it.

Tested-by: Hugh Dickins <hughd@...gle.com>

Personally, I'd recommend including it even before it gets into Rob's
tree (where it may well be improved upon first): it does a lot to
improve the usability of linux-next.

Hugh
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