Date: Fri, 11 Jul 2008 09:46:03 +0200
From: Ingo Molnar <mingo@elte.hu>
To: Milton Miller <miltonm@bga.com>
Cc: Ingo Molnar <mingo@redhat.com>, Rusty Russell <rusty@rustcorp.com.au>,
       linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org,
       linux-next@vger.kernel.org, Stephen Rothwell <sfr@canb.auug.org.au>,
       Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH -next-20080709] fixup stop_machine use cpu mask vs
	ftrace
Message-ID: <20080711074602.GB27849@elte.hu>
References: <200807081756.47140.rusty@rustcorp.com.au> <for-27-patch0-1@bga.com>
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In-Reply-To: <for-27-patch0-1@bga.com>
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* Milton Miller <miltonm@bga.com> wrote:

> Hi Rusty, Ingo.
> 
> Rusty's patch [PATCH 3/3] stop_machine: use cpu mask rather than magic 
> numbers didn't find kernel/trace/ftrace.c in -next, causing an 
> immediate almost NULL pointer dereference in ftrace_dynamic_init.

Rusty - what's going on here? Please do not change APIs like that, which 
cause code to crash. Either do a compatible API change, or change it 
over in a way that causes clear build failures, not crashes.

	Ingo
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