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From: Thomas Gleixner <tglx@linutronix.de>
To: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Robin Holt <holt@sgi.com>, Ingo Molnar <mingo@redhat.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"Pallipadi, Venkatesh" <venkatesh.pallipadi@gmail.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	"x86@kernel.org" <x86@kernel.org>
Subject: Re: [Patch] x86,pat Update the page flags for memtype atomically instead of using memtype_lock.
Date: Sat, 13 Mar 2010 02:08:51 +0100 (CET)	[thread overview]
Message-ID: <alpine.LFD.2.00.1003130204560.22855@localhost.localdomain> (raw)
In-Reply-To: <1268439313.2793.148.camel@sbs-t61.sc.intel.com>

On Fri, 12 Mar 2010, Suresh Siddha wrote:
> On Thu, 2010-03-11 at 08:17 -0800, Robin Holt wrote:
> > Changes since -V1:
> > 1) Introduce atomically setting and clearing the page flags and not
> > using the global memtype_lock to protect page->flags.
> > 
> > 2) This allowed me the opportunity to convert the rwlock back into a
> > spinlock and not affect _MY_ tests performance as all the pages my test
> > was utilizing are tracked by struct pages.
> 
> Can you also include this spinlock to rwlock conversion, which can be
> used for non RAM pages as a second patch?

spinlock -> rwlock conversion ? I hope you meant it the other way
round as Robin said in #2 :)

And yes it should be a separate patch.

Thanks,

	tglx


  reply	other threads:[~2010-03-13  1:09 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-11 16:17 Robin Holt
2010-03-13  0:15 ` Suresh Siddha
2010-03-13  1:08   ` Thomas Gleixner [this message]
2010-03-13  1:46     ` Suresh Siddha
2010-03-13  1:52       ` Thomas Gleixner
2010-03-13  2:05         ` Suresh Siddha
2010-03-15 21:11   ` Robin Holt

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