linux-kernel - Re: [PATCH -v5 08/11] tracing: not trace mips_timecounter

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Date:	Mon, 09 Nov 2009 22:35:20 +0800
From:	Wu Zhangjin <wuzhangjin@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Frederic Weisbecker <fweisbec@...il.com>,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Nicholas Mc Guire <der.herr@...r.at>,
	Richard Sandiford <rdsandiford@...glemail.com>,
	David Daney <ddaney@...iumnetworks.com>,
	Adam Nemet <anemet@...iumnetworks.com>,
	Patrik Kluba <kpajko79@...il.com>
Subject: Re: [PATCH -v5 08/11] tracing: not trace mips_timecounter_init()
 in MIPS

Hi,

On Mon, 2009-11-09 at 07:54 -0500, Steven Rostedt wrote:
[...]
> 
> Just do it in the Makefile. We can add __arch_notrace, and then in the
> Makefile define it with the arch.
> 
> ifeq ($(ARCH), MIPS)
> 	CFLAGS_foo.o = -D__arch_notrace=notrace
> endif
> 
> And we can simply define __arch_notrace in a header:
> 
> #ifndef __arch_notrace
> # define __arch_notrace
> #endif
> 
> I much rather uglify the Makefile than the code. 
> 

Seems can not totally avoid the problem mentioned by Frederic, that is
if there are two many functions in the file, and different platforms
care about different functions ;) 

what about Frederic's __time, just replace that __arch_notrace by
__time_notrace, and only consider the time relative functions currently?
Seems this will really make the stuff simpler.

Regards,
	Wu Zhangjin

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