[V3 PATCH] arm64: remove redundant FRAME_POINTER kconfig option and force to select it

[Catalin Marinas]

On Mon, Nov 09, 2015 at 10:09:55AM -0800, Yang Shi wrote:
> FRAME_POINTER is defined in lib/Kconfig.debug, it is unnecessary to redefine
> it in arch/arm64/Kconfig.debug. Actually, the one defined in arm64 directory
> is never used.

That's not true since the arm64 definition seems to take precedence.

> This adds a dependency on DEBUG_KERNEL for building with frame pointers.

It doesn't because arm64 selects ARCH_WANT_FRAME_POINTERS.

> ARM64 depends on frame pointer to get correct stack backtrace and need
> FRAME_POINTER kconfig option enabled all the time.
> However, currect implementation makes it could be disabled, so force it
> to be selected by ARM64.
> 
> Signed-off-by: Yang Shi <yang.shi at linaro.org>

Patch applied but I changed the commit log slightly. Thanks.

-- 
Catalin