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Re: [PATCH -tip ] [BUGFIX] perf probe: Add a workaround for GCC -mfentry
- From: Masami Hiramatsu <masami dot hiramatsu dot pt at hitachi dot com>
- To: Andi Kleen <andi at firstfloor dot org>
- Cc: Arnaldo Carvalho de Melo <acme at infradead dot org>, Ingo Molnar <mingo at elte dot hu>, Steven Rostedt <rostedt at goodmis dot org>, Michal Marek <mmarek at suse dot cz>, Peter Zijlstra <a dot p dot zijlstra at chello dot nl>, linux-kernel at vger dot kernel dot org, Ingo Molnar <mingo at redhat dot com>, Paul Mackerras <paulus at samba dot org>, systemtap at sourceware dot org, yrl dot pp-manager dot tt at hitachi dot com
- Date: Wed, 03 Oct 2012 22:12:15 +0900
- Subject: Re: [PATCH -tip ] [BUGFIX] perf probe: Add a workaround for GCC -mfentry
- References: <20121003121707.4186.28696.stgit@ltc138.sdl.hitachi.co.jp> <20121003122738.GE16230@one.firstfloor.org>
(2012/10/03 21:27), Andi Kleen wrote:
> On Wed, Oct 03, 2012 at 09:17:07PM +0900, Masami Hiramatsu wrote:
>> Add a workaround for GCC -mfentry option. This enables perf
>> probe to find function parameters(arguments) at given function
>> entry point again.
>
> Could you please file a gcc PR about this?
>
OK, filed as PR54793 :)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54793
Thank you,
--
Masami HIRAMATSU
IT Management Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: masami.hiramatsu.pt@hitachi.com