linux-kernel - Re: Remove hotplug cpu crap from cpufreq.

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Message-ID: <20061102214034.GB3407@in.ibm.com>
Date:	Fri, 3 Nov 2006 03:10:34 +0530
From:	Dipankar Sarma <dipankar@...ibm.com>
To:	Linus Torvalds <torvalds@...l.org>
Cc:	Andrew Morton <akpm@...l.org>, Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Gautham Shenoy <ego@...ibm.com>
Subject: Re: Remove hotplug cpu crap from cpufreq.

On Thu, Nov 02, 2006 at 11:30:20AM -0800, Linus Torvalds wrote:
> 
> 
> On Fri, 3 Nov 2006, Dipankar Sarma wrote:
> > 
> > IMO, the right thing to do would be to convert lock_cpu_hotplug() to
> > a get_cpu_hotplug()/put_cpu_hotplug() type semantics and use a more
> > scalable implementation underneath (as opposed to a global
> > semaphore/mutex).
> 
> Yes, I think Gautham's patch-series basically did exactly that, no? Except 
> it kept the old name.

Yes, atleast that is the idea - turn it into a scalable refcount model
as opposed to a global lock.

Thanks
Dipankar
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