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Groups > linux.kernel > #1517751
| From | Josh Triplett <josh@joshtriplett.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 0/2] Support compiling out the prctl syscall |
| Date | 2016-11-09 04:50 +0100 |
| Message-ID | <sBs3D-1TF-5@gated-at.bofh.it> (permalink) |
| References | <sBoMp-8k7-9@gated-at.bofh.it> <sBoW5-8nD-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Nov 09, 2016 at 01:26:53AM +0100, Arnd Bergmann wrote: > On Tuesday, November 8, 2016 4:17:47 PM CET 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. > > > > Josh Triplett (2): > > kernel: Move prctl and helpers from kernel/sys.c to new kernel/prctl.c > > kernel: Support compiling out the prctl syscall > > > > Both of these look really nice to me. Another syscall that comes to > mind as a candidate to be made optional is ptrace, and I've added > Nicolas Pitre to Cc here, as he has looked into this before. I've looked at that as well; it's a rather more complex patch, as several other bits of the kernel hook into ptrace or otherwise depend on ptrace. (And ptrace_may_access will need to stick around even when ptrace doesn't.) - Josh Triplett
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[PATCH 0/2] Support compiling out the prctl syscall Josh Triplett <josh@joshtriplett.org> - 2016-11-09 01:20 +0100
[PATCH 1/2] kernel: Move prctl and helpers from kernel/sys.c to new kernel/prctl.c Josh Triplett <josh@joshtriplett.org> - 2016-11-09 01:20 +0100
Re: [PATCH 1/2] kernel: Move prctl and helpers from kernel/sys.c to new kernel/prctl.c Andy Lutomirski <luto@amacapital.net> - 2016-11-09 01:30 +0100
Re: [PATCH 1/2] kernel: Move prctl and helpers from kernel/sys.c to new kernel/prctl.c Cyrill Gorcunov <gorcunov@gmail.com> - 2016-11-09 08:10 +0100
Re: [PATCH 0/2] Support compiling out the prctl syscall Arnd Bergmann <arnd@arndb.de> - 2016-11-09 01:30 +0100
Re: [PATCH 0/2] Support compiling out the prctl syscall Josh Triplett <josh@joshtriplett.org> - 2016-11-09 04:50 +0100
Re: [PATCH 0/2] Support compiling out the prctl syscall Nicolas Pitre <nicolas.pitre@linaro.org> - 2016-11-09 01:40 +0100
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