linux-kernel - Re: [PATCH] arm/ftrace: Fix function_return_addr() to function_return

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Date:	Wed, 11 Jun 2014 15:38:49 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Will Deacon <will.deacon@....com>,
	AKASHI Takahiro <takahiro.akashi@...aro.org>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Tim Bird <tim.bird@...ymobile.com>,
	gkulkarni@...iumnetworks.com, Deepak Saxena <dsaxena@...aro.org>,
	arndb@...db.de,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	linaro-kernel <linaro-kernel@...ts.linaro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-sh list <linux-sh@...r.kernel.org>
Subject: Re: [PATCH] arm/ftrace: Fix function_return_addr() to function_return_address()

Hi Steven,

On Wed, Jun 11, 2014 at 3:23 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
> The clean up of CALLER_ADDR*() functions required the archs to either
> use the default __builtin_return_address(X) (where X > 0) or override
> it with something the arch can use. To override it, the arch would
> define function_return_address(x).

ftrace_return_address(x)

> The arm architecture requires this to be redefined but instead of
> defining function_return_address(x) it defined function_return_addr(x).

ftrace_return_address(x) ... ftrace_return_address(x)

> Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> Signed-off-by: Steven Rostedt <rostedt@...dmis.org>

Nevertheless, your patch kills the warnings. Thanks!

Tested-by: Geert Uytterhoeven <geert@...ux-m68k.org>

> ----
> diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
> index eb577f4..39eb16b 100644
> --- a/arch/arm/include/asm/ftrace.h
> +++ b/arch/arm/include/asm/ftrace.h
> @@ -52,7 +52,7 @@ extern inline void *return_address(unsigned int level)
>
>  #endif
>
> -#define ftrace_return_addr(n) return_address(n)
> +#define ftrace_return_address(n) return_address(n)
>
>  #endif /* ifndef __ASSEMBLY__ */

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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