linux-kernel - Re: [PATCH v4 2/2] ARM: cpuidle: make arm_cpuidle

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20160714153113.GC1041@n2100.armlinux.org.uk>
Date:	Thu, 14 Jul 2016 16:31:13 +0100
From:	Russell King - ARM Linux <linux@...linux.org.uk>
To:	Jisheng Zhang <jszhang@...vell.com>, arm@...nel.org
Cc:	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	lorenzo.pieralisi@....com, lina.iyer@...aro.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 2/2] ARM: cpuidle: make arm_cpuidle_suspend() a bit
 more efficient

On Fri, Jul 08, 2016 at 06:58:54PM +0800, Jisheng Zhang wrote:
> On Fri, 8 Jul 2016 12:50:12 +0200 Daniel Lezcano  wrote:
> 
> > On Fri, Jul 08, 2016 at 02:17:29PM +0800, Jisheng Zhang wrote:
> > > Dear Daniel,
> > > 
> > > On Thu, 7 Jul 2016 15:46:28 +0200 Daniel Lezcano wrote:
> > >   
> > > > On Wed, Jul 06, 2016 at 02:15:55PM +0800, Jisheng Zhang wrote:  
> > > > > Currently, we check cpuidle_ops.suspend every time when entering a
> > > > > low-power idle state. But this check could be avoided in this hot path
> > > > > by moving it into arm_cpuidle_read_ops() to reduce arm_cpuidle_suspend
> > > > > overhead a bit.
> > > > > 
> > > > > Signed-off-by: Jisheng Zhang <jszhang@...vell.com>
> > > > > ---    
> > > > 
> > > > Acked-by: Daniel Lezcano <daniel.lezcano@...aro.org>  
> > > 
> > > I'm not sure the upstream merging path this patch should follow, Per my
> > > understanding, I need to put it into Russell's PATCH system.  
> > 
> > Or alternatively through arm-soc
> > 
> 
> Got it. thanks.
> 
> Dear Arnd, Olof,
> 
> I have no pull request permission. what's your preference? Could you please
> advise?

... and because arm-soc people haven't responded, they've now ended up
in the patch system... So I've applied them to my tree in a separate
branch.

Thanks!

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.