linux-kernel - Re: [RFC PATCH 0/5] x86_64: enable clockevents and dynticks

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Message-ID: <20070331163600.GY10574@sequoia.sous-sol.org>
Date:	Sat, 31 Mar 2007 09:36:00 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Chris Wright <chrisw@...s-sol.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	john stultz <johnstul@...ibm.com>, Andi Kleen <ak@...e.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 0/5] x86_64: enable clockevents and dynticks

* Ingo Molnar (mingo@...e.hu) wrote:
> * Chris Wright <chrisw@...s-sol.org> wrote:
> > This series converts x86_64 timers to clockevents drivers and then 
> > enables dynticks.  There's some minor cleanups along the way.  The 
> > lapic broadcast mechanism is untested, I'm sure it still needs work, 
> > there's still some cruft in lapic_setup_timer.
> > 
> > This is just for comments at this point, now that it's working on my 
> > test box in both NO_HZ=n and NO_HZ=n configurations (typically using 
> > hpet).
> 
> hm, neat - did you take a look at the x86_64 clockevents code that is in 
> -rt and that has been there for a year or so and has been tested quite 
> extensively?

Yes, that's what I started with.  It was only partially done, for example,
didn't have hpet done yet and didn't work well on my machine (hang
on boot).  As I dug at it, there was still more room for cleanups, etc.
Hence this, which has also been tested somewhat extensively as Jeremy
noted from my typo above...  Both NO_HZ=n _and_ NO_HZ=n ;-)

thanks,
-chris
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