Date: Tue, 8 Nov 2016 19:30:12 -0500 (EST)
From: Nicolas Pitre <nicolas.pitre@linaro.org>
To: Josh Triplett <josh@joshtriplett.org>
cc: Andrew Morton <akpm@linux-foundation.org>,
        Kees Cook <keescook@chromium.org>,
        Johannes Weiner <hannes@cmpxchg.org>, Arnd Bergmann <arnd@arndb.de>,
        Ingo Molnar <mingo@kernel.org>, Andy Lutomirski <luto@kernel.org>,
        Petr Mladek <pmladek@suse.com>, Thomas Garnier <thgarnie@google.com>,
        Ard Biesheuvel <ard.biesheuvel@linaro.org>,
        Zefan Li <lizefan@huawei.com>, Li Bin <huawei.libin@huawei.com>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        Dmitry Vyukov <dvyukov@google.com>, Ralf Baechle <ralf@linux-mips.org>,
        Alex Thorlton <athorlton@sgi.com>, Michal Hocko <mhocko@suse.com>,
        Mateusz Guzik <mguzik@redhat.com>,
        Cyrill Gorcunov <gorcunov@openvz.org>,
        John Stultz <john.stultz@linaro.org>,
        Al Viro <viro@zeniv.linux.org.uk>, Zach Brown <zab@redhat.com>,
        Anna Schumaker <Anna.Schumaker@Netapp.com>,
        Dave Hansen <dave.hansen@intel.com>, linux-kernel@vger.kernel.org,
        linux-api@vger.kernel.org
Subject: Re: [PATCH 0/2] Support compiling out the prctl syscall
In-Reply-To: <cover.c693f10dfc19e12c214758e4b13ca9b4e4cf9668.1478650356.git-series.josh@joshtriplett.org>
Message-ID: <alpine.LFD.2.20.1611081928540.11818@knanqh.ubzr>
References: <cover.c693f10dfc19e12c214758e4b13ca9b4e4cf9668.1478650356.git-series.josh@joshtriplett.org>
User-Agent: Alpine 2.20 (LFD 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1163
Lines: 33

On Tue, 8 Nov 2016, Josh Triplett wrote:

> Some embedded systems can do without the prctl syscall, saving some space.
> 
> This also avoids regular increases in tinyconfig size as people add more
> non-optional functionality to prctl (observed via the 0-day kernel
> infrastructure).
> 
> The first patch moves prctl and all its helpers into a separate source file,
> kernel/prctl.c, to allow making it optional via the Makefile without any
> ifdefs.  The second patch adds the Kconfig option to make prctl optional.

Excellent.  For both patches:

Acked-by: Nicolas Pitre <nico@linaro.org>

> 
> Josh Triplett (2):
>   kernel: Move prctl and helpers from kernel/sys.c to new kernel/prctl.c
>   kernel: Support compiling out the prctl syscall
> 
>  init/Kconfig    |  12 +-
>  kernel/Makefile |   1 +-
>  kernel/prctl.c  | 684 +++++++++++++++++++++++++++++++++++++++++++++++++-
>  kernel/sys.c    | 672 +------------------------------------------------
>  kernel/sys_ni.c |   1 +-
>  5 files changed, 698 insertions(+), 672 deletions(-)
>  create mode 100644 kernel/prctl.c
> 
> base-commit: e3a00f68e426df24a5fb98956a1bd1b23943aa1e
> -- 
> git-series 0.8.11
>