linux-kernel - Re: [PATCH 09/23] perf: make cfi unwind support based on CONFIG

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Date:	Tue, 02 Apr 2013 11:32:02 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	David Ahern <dsahern@...il.com>
Cc:	acme@...stprotocols.net, linux-kernel@...r.kernel.org,
	Borislav Petkov <bp@...en8.de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>, Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 09/23] perf: make cfi unwind support based on
 CONFIG_LIBUNWIND

On Mon, 2013-04-01 at 21:54 -0600, David Ahern wrote:
> --- a/tools/perf/Pconfig
> +++ b/tools/perf/Pconfig
> @@ -1,3 +1,14 @@
> +config ARCH
> +    string
> +    option env="ARCH"

Why does this copy init/Kconfig?

> +config X86
> +    def_bool y if ARCH = "x86"
> +    select HAVE_CFI_UNWIND_SUPPORT
> +

Doesn't this clash with the same Kconfig symbol in arch/x86/Kconfig?

> +config HAVE_CFI_UNWIND_SUPPORT
> +    bool
> +
>  config NEWT
>      bool "Enable newt-based TUI"
>  


Paul Bolle

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