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Re: [PATCH -v4 9/9] tracing: add function graph tracer support for MIPS

To: wuzhangjin@gmail.com
Subject: Re: [PATCH -v4 9/9] tracing: add function graph tracer support for MIPS
From: Steven Rostedt <rostedt@goodmis.org>
Date: Thu, 22 Oct 2009 13:58:22 -0400
Cc: linux-kernel@vger.kernel.org, linux-mips@linux-mips.org, Thomas Gleixner <tglx@linutronix.de>, Ralf Baechle <ralf@linux-mips.org>, Nicholas Mc Guire <der.herr@hofr.at>
In-reply-to: <1256233198.23653.0.camel@falcon>
Organization: Kihon Technologies Inc.
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <028867b99ec532b84963a35e7d552becc783cafc.1256135456.git.wuzhangjin@gmail.com> <2f73eae542c47ac5bbb9f7280e6c0271d193e90d.1256135456.git.wuzhangjin@gmail.com> <3f0d3515f74a58f4cfd11e61b62a129fdc21e3a7.1256135456.git.wuzhangjin@gmail.com> <ea8aa927fbd184b54941e4c2ae0be8ea0b4f6b8a.1256135456.git.wuzhangjin@gmail.com> <96110ea5dd4d3d54eb97d0bb708a5bd81c7a50b5.1256135456.git.wuzhangjin@gmail.com> <5dda13e8e3a9c9dba4bb7179183941bda502604f.1256135456.git.wuzhangjin@gmail.com> <af3ec1b5cd06b6f6a461c9fa7d09a51fabccb08d.1256135456.git.wuzhangjin@gmail.com> <a6f2959a69b6a77dd32cc36a5c8202f97d524f1e.1256135456.git.wuzhangjin@gmail.com> <53bdfdd95ec4fa00d4cc505bb5972cf21243a14d.1256135456.git.wuzhangjin@gmail.com> <1256141540.18347.3118.camel@gandalf.stny.rr.com> <1256233198.23653.0.camel@falcon>
Reply-to: rostedt@goodmis.org
Sender: linux-mips-bounce@linux-mips.org
FYI:

One of the comments made at the kernel summit, was to have people trim
email when sending. It makes it a lot easier to reply then to scroll
down lots of lines of quoted text just to read something that only
references part of the email.

Don't be afraid to cut out quoted text. It does help (as I did in this
reply).

On Fri, 2009-10-23 at 01:39 +0800, Wu Zhangjin wrote:

> > >   .set reorder
> > > diff --git a/arch/mips/kernel/vmlinux.lds.S 
> > > b/arch/mips/kernel/vmlinux.lds.S
> > > index 162b299..f25df73 100644
> > > --- a/arch/mips/kernel/vmlinux.lds.S
> > > +++ b/arch/mips/kernel/vmlinux.lds.S
> > > @@ -46,6 +46,7 @@ SECTIONS
> > >           SCHED_TEXT
> > >           LOCK_TEXT
> > >           KPROBES_TEXT
> > > +         IRQENTRY_TEXT
> > 
> > This looks like it should be in a separate patch. I don't see where you
> > explain this?
> > 
> 
> This is used to fix this error:
> 
> kernel/built-in.o: In function `print_graph_irq':
> trace_functions_graph.c:(.text+0x82f40): undefined reference to
> `__irqentry_text_start'
> trace_functions_graph.c:(.text+0x82f48): undefined reference to
> `__irqentry_text_start'
> trace_functions_graph.c:(.text+0x82f70): undefined reference to
> `__irqentry_text_end'
> trace_functions_graph.c:(.text+0x82f74): undefined reference to
> `__irqentry_text_end'

Right, and this should be in a separate patch, showing this error in the
change log.

Thanks,

-- Steve



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