linux-kernel - Re: [PATCH 2/4] generic-smp: remove kmalloc usage

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Date:	Wed, 18 Feb 2009 16:00:06 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Rusty Russell <rusty@...tcorp.com.au>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Nick Piggin <npiggin@...e.de>,
	Jens Axboe <jens.axboe@...cle.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	linux-kernel@...r.kernel.org, Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH 2/4] generic-smp: remove kmalloc usage

Ingo Molnar wrote:
> The kmalloc(GFP_ATOMIC) has been in kernel/smp.c for about half 
> a year, since:
>
>  |  commit 3d4422332711ef48ef0f132f1fcbfcbd56c7f3d1
>  |  Author: Jens Axboe <jens.axboe@...cle.com>
>  |  Date:   Thu Jun 26 11:21:34 2008 +0200
>  |  Subject: [PATCH] Add generic helpers for arch IPI function calls
>
> Which introduced kernel/smp.c to begin with. It got merged on 
> July 15.
>   

The kmalloc to resolve the stack lifetime vs rcu bug is more recent than 
that - around August, I think.

    J
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