linux-kernel - Re: [PATCH v3 2/2] x86, mwaitt: introduce mwaix delay with a configurable timer

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Message-ID: <20150612082320.GA24776@hr-slim.amd.com>
Date:	Fri, 12 Jun 2015 16:23:21 +0800
From:	Huang Rui <ray.huang@....com>
To:	Borislav Petkov <bp@...e.de>
CC:	Peter Zijlstra <peterz@...radead.org>,
	Andy Lutomirski <luto@...capital.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>,
	John Stultz <john.stultz@...aro.org>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	X86 ML <x86@...nel.org>, Fengguang Wu <fengguang.wu@...el.com>,
	Aaron Lu <aaron.lu@...el.com>,
	Suravee Suthikulanit <suravee.suthikulpanit@....com>,
	Tony Li <tony.li@....com>, Ken Xue <ken.xue@....com>
Subject: Re: [PATCH v3 2/2] x86, mwaitt: introduce mwaix delay with a
 configurable timer

On Fri, Jun 12, 2015 at 10:30:33AM +0200, Borislav Petkov wrote:
> On Fri, Jun 12, 2015 at 03:50:33PM +0800, Huang Rui wrote:
> > Yeah, but I remembered at last time, someone tell me we shouldn't
> > force to set timer always enabled. So I add this interface to expose
> > more clearly. :)
> 
> Yeah, but this interface would make users go and look at it and try to
> remember what the enable parameter stood for.
> 
> > So could I use __mwaitx directly like below:
> > 
> > __monitorx(&dummy, 0, 0);
> > __mwaitx(0xf, delay, MWAITX_ECX_TIMER_ENABLE);
> 
> Yes, this is more straight-forward and what the hardware instructions
> take, so more intuitive.
> 

OK, will do it. :)

Thanks,
Rui
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