linux-kernel - Re: [PATCH] arm64: enable generic idle loop

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Message-ID: <20150915145116.GA2727@leoy-linaro>
Date:	Tue, 15 Sep 2015 22:51:16 +0800
From:	Leo Yan <leo.yan@...aro.org>
To:	Will Deacon <will.deacon@....com>
Cc:	Catalin Marinas <catalin.marinas@....com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] arm64: enable generic idle loop

On Tue, Sep 15, 2015 at 03:44:09PM +0100, Will Deacon wrote:
> On Tue, Sep 15, 2015 at 03:31:35PM +0100, Catalin Marinas wrote:
> > On Tue, Sep 15, 2015 at 07:20:08PM +0800, Leo Yan wrote:
> > > On Fri, Aug 21, 2015 at 04:54:25PM +0100, Catalin Marinas wrote:
> > > > On Fri, Aug 21, 2015 at 05:14:46PM +0800, Leo Yan wrote:
> > > > > On Fri, Aug 21, 2015 at 10:00:43AM +0100, Catalin Marinas wrote:
> > > > > > On Fri, Aug 21, 2015 at 11:40:22AM +0800, Leo Yan wrote:
> > > > > > > Enable generic idle loop for ARM64, so can support for hlt/nohlt
> > > > > > > command line options to override default idle loop behavior.
> > > > > > 
> > > > > > Just curious, what do you need this for?
> > > > > 
> > > > > With this config, usually we can add "nohlt" in command line to force
> > > > > the cpu will never be powered off; so can quickly narrow down if some
> > > > > issues are related with cpuidle or not.
> > > > > 
> > > > > And if CPU is powered off, then its debug logic also will be powered off.
> > > > > So we can simply use this method to let debugger always hot connect with
> > > > > the target CPU.
> > > > 
> > > > OK.
> > > > 
> > > > Acked-by: Catalin Marinas <catalin.marinas@....com>
> > > 
> > > Suppose you have missed this patch at previous merge window,
> > > so just for reminding.
> > 
> > It looks like it missed the merging window. Will, can this still be
> > picked for 4.3? If not, it will be 4.4.
> 
> Yeah, it's harmless enough to pick up with the current crop of fixes.
> Sorry I missed it.

It's fine and thanks :)
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