linux-kernel - Re: [RFC][PATCH] ppc: Implement save_stack_trace

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Message-ID: <20151216122419.385f1306@gandalf.local.home>
Date:	Wed, 16 Dec 2015 12:24:19 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	LKML <linux-kernel@...r.kernel.org>, linuxppc-dev@...ts.ozlabs.org,
	chuhu@...hat.com
Subject: Re: [RFC][PATCH] ppc: Implement save_stack_trace_regs()

On Wed, 09 Dec 2015 12:03:05 +1100
Michael Ellerman <mpe@...erman.id.au> wrote:

> > > Should I take this via powerpc or do you want it to go in via tracing?  
> > 
> > You can take it. And you can replace the PT_R1 if you want. I just
> > noticed that it was defined, and I try to use macro names instead of
> > hard coded numbers. I was actually looking for a "PT_SP" :-)  
> 
> OK thanks.
> 
> Looks like we actually have:
> 
>   #define kernel_stack_pointer(regs) ((regs)->gpr[1])
> 
> So that would be the most self documenting way to do it I guess, though I've
> never actually seen that macro used anywhere before :)

Hi,

Are you going to take this, or do you want me to?

-- Steve
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