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Message-Id: <1257771288.2845.11.camel@frodo>
Date: Mon, 09 Nov 2009 07:54:48 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: wuzhangjin@...il.com
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
On Mon, 2009-11-09 at 12:31 +0800, Wu Zhangjin wrote:
> I think if we use something like __mips_notrace here, we may get lots of
> __ARCH_notraces here too, 'Cause some other platforms(at least, as I
> know, Microblaze will do it too) may also need to add one here, it will
> become:
>
> __mips_notrace __ARCH1_notrace __ARCH2_notrace .... foo() {...}
>
> A little ugly ;)
I agree, that is ugly.
>
> and If a new platform need it's __ARCH_notrace, they need to touch the
> common part of ftrace, more side-effects!
>
> but with __arch_notrace, the archs only need to touch it's own part,
> Although there is a side-effect as you mentioned above ;)
>
> So, what should we do?
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.
-- Steve
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