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SubjectRe: [PATCH] tracing: don't select FRAME_POINTER on PPC
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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@keymile.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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