From: Ralf Baechle <ralf@linux-mips.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: David Daney <ddaney.cavm@gmail.com>,
Alan Cooper <alcooperx@gmail.com>,
linux-mips@linux-mips.org, linux-kernel@vger.kernel.org
Subject: Re: MIPS Function Tracer question
Date: Mon, 3 Dec 2012 17:13:46 +0100 [thread overview]
Message-ID: <20121203161346.GA29573@linux-mips.org> (raw)
In-Reply-To: <1354545648.6276.202.camel@gandalf.local.home>
On Mon, Dec 03, 2012 at 09:40:48AM -0500, Steven Rostedt wrote:
> The issue is with x86. Gcc wont compile if you have -pg and
> -fomit-frame-pointer on x86. I originally forced function tracing to
> select FRAME_POINTER, but because now on x86 with -mfentry, -pg no
> longer requires frame pointers being set, I just let -pg complain one
> way or the other. I believe that gcc by default will not add frame
> pointers. Thus adding function tracing just prevents
> -fomit-frame-pointer from being set, and if -pg requires frame pointers
> it will automatically enable them otherwise they should not be enabled.
On architectures such as MIPS where a frame pointer is not required for
debugging -O and higher imply -fomit-frame-pointer.
Ralf
next prev parent reply other threads:[~2012-12-03 16:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-29 21:04 MIPS Function Tracer question Alan Cooper
2012-11-29 23:00 ` David Daney
[not found] ` <CAOGqxeU=BumDt6jnVc=sKk=q_v1eywGu=_Eo9xo3r9av3Ky6kw@mail.gmail.com>
2012-11-30 16:25 ` David Daney
2012-12-03 14:40 ` Steven Rostedt
2012-12-03 16:13 ` Ralf Baechle [this message]
2012-12-03 17:50 ` Steven Rostedt
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