From: Ralf Baechle <ralf@linux-mips.org>
To: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: rostedt@goodmis.org, Nicholas Mc Guire <der.herr@hofr.at>,
zhangfx@lemote.com, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
Frederic Weisbecker <fweisbec@gmail.com>,
linux-kernel@vger.kernel.org, linux-mips@linux-mips.org
Subject: Re: [PATCH v9 09/10] tracing: reserve $12(t0) for mcount-ra-address of gcc 4.5
Date: Fri, 20 Nov 2009 17:25:17 +0000 [thread overview]
Message-ID: <20091120172517.GI6869@linux-mips.org> (raw)
In-Reply-To: <76ddc2b8164e0e2f239ddd81ef1ef6a241540004.1258719323.git.wuzhangjin@gmail.com>
On Fri, Nov 20, 2009 at 08:34:37PM +0800, Wu Zhangjin wrote:
> From: Wu Zhangjin <wuzhangjin@gmail.com>
>
> A new option -mmcount-ra-address for gcc 4.5 have been sent by David
> Daney <ddaney@caviumnetworks.com> in the thread "MIPS: Add option to
> pass return address location to _mcount", which help to record the
> location of the return address(ra) for the function graph tracer of MIPS
> to hijack the return address easier and safer. that option used the
> $12(t0) register by default, so, we reserve it for it, and use t1,t2,t3
> instead of t0,t1,t2.
>
> Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Queued for 2.6.33 but due to patch 3/3 I won't propagate this series
immediately to linux-next.
Thanks!
Ralf
next prev parent reply other threads:[~2009-11-20 17:26 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-20 12:28 [PATCH v9 00/10] ftrace for MIPS Wu Zhangjin
2009-11-20 12:34 ` [PATCH v9 01/10] tracing: add static function tracer support " Wu Zhangjin
2009-11-20 17:22 ` Ralf Baechle
2009-11-20 12:34 ` [PATCH v9 02/10] tracing: enable HAVE_FUNCTION_TRACE_MCOUNT_TEST " Wu Zhangjin
2009-11-20 17:22 ` Ralf Baechle
2009-11-20 12:34 ` [PATCH v9 03/10] tracing: add an endian argument to scripts/recordmcount.pl Wu Zhangjin
2009-11-20 17:20 ` Ralf Baechle
2009-12-03 17:45 ` Steven Rostedt
2009-11-20 12:34 ` [PATCH v9 04/10] tracing: add dynamic function tracer support for MIPS Wu Zhangjin
2009-11-20 17:23 ` Ralf Baechle
2009-12-03 17:54 ` Steven Rostedt
2009-11-20 12:34 ` [PATCH v9 05/10] tracing: add IRQENTRY_EXIT section " Wu Zhangjin
2009-11-20 17:23 ` Ralf Baechle
2009-11-20 12:34 ` [PATCH v9 06/10] tracing: add function graph tracer support " Wu Zhangjin
2009-11-20 17:24 ` Ralf Baechle
2009-11-20 12:34 ` [PATCH v9 07/10] tracing: add dynamic function graph tracer " Wu Zhangjin
2009-11-20 17:24 ` Ralf Baechle
2009-11-22 6:19 ` Wu Zhangjin
2009-11-20 12:34 ` [PATCH v9 08/10] tracing: make ftrace for MIPS work without -fno-omit-frame-pointer Wu Zhangjin
2009-11-20 17:24 ` Ralf Baechle
2009-11-20 12:34 ` [PATCH v9 09/10] tracing: reserve $12(t0) for mcount-ra-address of gcc 4.5 Wu Zhangjin
2009-11-20 17:25 ` Ralf Baechle [this message]
2009-11-20 12:34 ` [PATCH v9 10/10] tracing: make function graph tracer work with -mmcount-ra-address Wu Zhangjin
2009-11-20 17:25 ` Ralf Baechle
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