linux-kernel - Re: [PATCH 2/2] Consolidate redundant register/stack access code

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Date:	Thu, 18 Jun 2015 13:13:05 -0500
From:	rkuo <rkuo@...eaurora.org>
To:	David Long <dave.long@...aro.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Andy Lutomirski <luto@...capital.net>,
	Anton Blanchard <anton@...ba.org>,
	Behan Webster <behanw@...verseincode.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Eric Paris <eparis@...hat.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	Ingo Molnar <mingo@...hat.com>,
	Jan Willeke <willeke@...ibm.com>,
	Kees Cook <keescook@...omium.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nikolay Borisov <Nikolay.Borisov@....com>,
	Oleg Nesterov <oleg@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Robert Richter <rric@...nel.org>,
	Roland McGrath <roland@...k.frob.com>,
	Russell King <linux@....linux.org.uk>,
	Tejun Heo <tj@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Will Deacon <will.deacon@....com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-hexagon@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
	linux390@...ibm.com, linuxppc-dev@...ts.ozlabs.org, x86@...nel.org
Subject: Re: [PATCH 2/2] Consolidate redundant register/stack access code

On Mon, Jun 15, 2015 at 12:42:59PM -0400, David Long wrote:
> From: "David A. Long" <dave.long@...aro.org>
> 
> Several architectures have identical or functionally equivalent code
> implementing parts of the HAVE_REGS_AND_STACK_ACCESS_API feature.  Move
> that code out of the architecture directories.
> 
> Signed-off-by: David A. Long <dave.long@...aro.org>
> ---
>  arch/arm/include/asm/ptrace.h          |  6 ---
>  arch/arm/kernel/ptrace.c               | 67 +-------------------------------
>  arch/hexagon/include/uapi/asm/ptrace.h |  3 --
>  arch/powerpc/include/asm/ptrace.h      | 38 ------------------
>  arch/powerpc/kernel/ptrace.c           | 34 +----------------
>  arch/s390/include/asm/ptrace.h         |  3 --
>  arch/s390/kernel/ptrace.c              | 70 ++++++++++------------------------
>  arch/sh/include/asm/ptrace.h           | 39 -------------------
>  arch/sh/kernel/Makefile                |  2 +-
>  arch/sh/kernel/ptrace.c                | 33 ----------------
>  arch/sh/kernel/ptrace_32.c             |  2 +-
>  arch/sh/kernel/ptrace_64.c             |  2 +-
>  arch/x86/include/asm/ptrace.h          | 37 ------------------
>  arch/x86/kernel/ptrace.c               | 34 +----------------
>  include/linux/ptrace.h                 | 42 ++++++++++++++++++++
>  kernel/ptrace.c                        | 38 ++++++++++++++++++
>  16 files changed, 107 insertions(+), 343 deletions(-)
>  delete mode 100644 arch/sh/kernel/ptrace.c
> 

(And in some cases, the architecture didn't have the code in the first place!)

For Hexagon:

Acked-by: Richard Kuo <rkuo@...eaurora.org>

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