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From: Rusty Russell <rusty@au1.ibm.com>
To: vatsa@in.ibm.com
Cc: Nick Piggin <piggin@cyberone.com.au>, Rusty Russell <rusty@au1.ibm.com>,
       linux-kernel@vger.kernel.org, torvalds@osdl.org, akpm@osdl.org,
       rml@tech9.net
Subject: Re: CPU Hotplug: Hotplug Script And SIGPWR 
In-reply-to: Your message of "Wed, 21 Jan 2004 09:36:33 +0530."
             <20040121093633.A3169@in.ibm.com> 
Date: Wed, 21 Jan 2004 16:07:06 +1100
Message-Id: <20040121050853.AF2F217DDE@ozlabs.au.ibm.com>
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In message <20040121093633.A3169@in.ibm.com> you write:
> On Tue, Jan 20, 2004 at 12:43:52AM -0800, Tim Hockin wrote:
> > IFF the app is designed to handle it.  The existence of a SIGPWR handler
> > does not necessarily imply that, though.  a SIGCPU or something might
> > correlate 1:1 with this, but SIGPWR doesn't.
> 
> I agree we should have a separe signal for CPU Hotplug.

Can we add signals without breaking userspace?

If we can, SIGRECONFIG makes sense.  If not, I'd rather not have a
signal, rely on hotplug, and look at addding a signal in 2.7.

Cheers,
Rusty.
--
  Anyone who quotes me in their sig is an idiot. -- Rusty Russell.