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Message-ID: <1330349831.25686.188.camel@gandalf.stny.rr.com>
Date: Mon, 27 Feb 2012 08:37:11 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Gerlando Falauto <gerlando.falauto@...mile.com>
Cc: holger.brunck@...mile.com,
Frederic Weisbecker <fweisbec@...il.com>,
Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tracing: don't select FRAME_POINTER on PPC
On Mon, 2012-02-27 at 09:08 +0100, Gerlando Falauto wrote:
> On PowerPC, FUNCTION_TRACER selects FRAME_POINTER, even
> though the architecture does not support it.
>
> This causes the following warning:
> warning: (LOCKDEP && FAULT_INJECTION_STACKTRACE_FILTER && LATENCYTOP && FUNCTION_TRACER && KMEMCHECK) selects FRAME_POINTER which has unmet direct dependencies (DEBUG_KERNEL && (CRIS || M68K || FRV || UML || AVR32 || SUPERH || BLACKFIN || MN10300) || ARCH_WANT_FRAME_POINTERS)
>
> So remove the warning by adding the extra condition
> "if !PPC" to FUNCTION_TRACER for FRAME_POINTER selection
I'll queue it up for 3.4, if that's fine with you.
Thanks,
-- Steve
>
> Signed-off-by: Gerlando Falauto <gerlando.falauto@...mile.com>
> ---
> kernel/trace/Kconfig | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig
> index 2ad39e5..fbdec2e 100644
> --- a/kernel/trace/Kconfig
> +++ b/kernel/trace/Kconfig
> @@ -141,7 +141,7 @@ if FTRACE
> config FUNCTION_TRACER
> bool "Kernel Function Tracer"
> depends on HAVE_FUNCTION_TRACER
> - select FRAME_POINTER if !ARM_UNWIND && !S390 && !MICROBLAZE
> + select FRAME_POINTER if !ARM_UNWIND && !PPC && !S390 && !MICROBLAZE
> select KALLSYMS
> select GENERIC_TRACER
> select CONTEXT_SWITCH_TRACER
--
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