From mboxrd@z Thu Jan 1 00:00:00 1970 From: Josh Triplett Subject: [PATCH 0/2] Support compiling out the prctl syscall Date: Tue, 8 Nov 2016 16:17:47 -0800 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-api-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Andrew Morton , Kees Cook , Johannes Weiner , Arnd Bergmann , Ingo Molnar , Andy Lutomirski , Petr Mladek , Thomas Garnier , Ard Biesheuvel , Nicolas Pitre , Zefan Li , Li Bin , "Eric W. Biederman" , Dmitry Vyukov , Ralf Baechle , Alex Thorlton , Michal Hocko , Mateusz Guzik , Cyrill Gorcunov , John Stultz , Al Viro List-Id: linux-api@vger.kernel.org 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. 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