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Re: [PATCH v8 00/16] ftrace for MIPS

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH v8 00/16] ftrace for MIPS
From: Thomas Gleixner <tglx@linutronix.de>
Date: Mon, 16 Nov 2009 15:19:30 +0100 (CET)
Cc: Wu Zhangjin <wuzhangjin@gmail.com>, rostedt@goodmis.org, Frederic Weisbecker <fweisbec@gmail.com>, Ingo Molnar <mingo@elte.hu>, Nicholas Mc Guire <der.herr@hofr.at>, David Daney <ddaney@caviumnetworks.com>, Richard Sandiford <rdsandiford@googlemail.com>, Patrik Kluba <kpajko79@gmail.com>, Michal Simek <monstr@monstr.eu>, "Maciej W . Rozycki" <macro@linux-mips.org>, linux-mips@linux-mips.org, linux-kernel@vger.kernel.org, zhangfx@lemote.com, zhouqg@gmail.com
In-reply-to: <20091116134831.GA10189@linux-mips.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <cover.1258177321.git.wuzhangjin@gmail.com> <20091116134831.GA10189@linux-mips.org>
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On Mon, 16 Nov 2009, Ralf Baechle wrote:
> On Sat, Nov 14, 2009 at 02:30:31PM +0800, Wu Zhangjin wrote:
> 
> Time to talk about how to get the whole thing merged.
> 
> I'm reasonably happy with the arch part of the patchset.  There are two
> remaining issues in the arch part - cache flushing will not work as is on
> a SMP system and the whole code patching is going to fail if the kernel
> text is replicated with CONFIG_REPLICATE_KTEXT which is an IP27-only option.
> 
> I suggest we should go ahready and just disallow dynamic ftrace on on
> these problematic configurations for now and deal with them later, so
> something like
> 
>       select HAVE_DYNAMIC_FTRACE if !SMP && !REPLICATE_KTEXT

Makes sense.
 
> This leaves the non-arch bits to merge; patches which touch code outside
> of arch/mips are:

I'm going to comment on the patches.

Thanks,

        tglx

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