linux-kernel - Re: [PATCH 03/20] asm-generic: Drop getrlimit and setrlimit syscalls from default list

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Date:   Mon, 5 Jun 2017 15:44:06 +0100
From:   James Hogan <james.hogan@...tec.com>
To:     Yury Norov <ynorov@...iumnetworks.com>
CC:     Catalin Marinas <catalin.marinas@....com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Andrew Pinski <pinskia@...il.com>,
        Andrew Pinski <Andrew.Pinski@...iumnetworks.com>,
        Adam Borowski <kilobyte@...band.pl>,
        Chris Metcalf <cmetcalf@...hip.com>,
        Steve Ellcey <sellcey@...iumnetworks.com>,
        Maxim Kuvyrkov <maxim.kuvyrkov@...aro.org>,
        Ramana Radhakrishnan <ramana.gcc@...glemail.com>,
        Florian Weimer <fweimer@...hat.com>,
        Bamvor Zhangjian <bamvor.zhangjian@...wei.com>,
        Andreas Schwab <schwab@...e.de>,
        Chris Metcalf <cmetcalf@...lanox.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        <schwidefsky@...ibm.com>, <broonie@...nel.org>,
        Joseph Myers <joseph@...esourcery.com>,
        <christoph.muellner@...obroma-systems.com>,
        <szabolcs.nagy@....com>, <klimov.linux@...il.com>,
        <Nathan_Lynch@...tor.com>, <agraf@...e.de>,
        <Prasun.Kapoor@...iumnetworks.com>, <geert@...ux-m68k.org>,
        <philipp.tomsich@...obroma-systems.com>,
        <manuel.montezelo@...il.com>, <linyongting@...wei.com>,
        <davem@...emloft.net>, <zhouchengming1@...wei.com>,
        <linux-arch@...r.kernel.org>, <linux-snps-arc@...ts.infradead.org>,
        Will Deacon <will.deacon@....com>,
        Mark Salter <msalter@...hat.com>,
        Aurelien Jacquiot <a-jacquiot@...com>,
        <linux-c6x-dev@...ux-c6x.org>, Richard Kuo <rkuo@...eaurora.org>,
        <linux-hexagon@...r.kernel.org>, <linux-metag@...r.kernel.org>,
        Jonas Bonn <jonas@...thpole.se>, <linux@...ts.openrisc.net>,
        Chen Liqin <liqin.linux@...il.com>,
        Lennox Wu <lennox.wu@...il.com>,
        Guan Xuetao <gxt@...c.pku.edu.cn>,
        Ley Foon Tan <lftan@...era.com>,
        <nios2-dev@...ts.rocketboards.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        <uclinux-h8-devel@...ts.sourceforge.jp>
Subject: Re: [PATCH 03/20] asm-generic: Drop getrlimit and setrlimit syscalls
 from default list

Hi Yury,

On Sun, Jun 04, 2017 at 02:59:52PM +0300, Yury Norov wrote:
> The newer prlimit64 syscall provides all the functionality provided by
> the getrlimit and setrlimit syscalls and adds the pid of target process,
> so future architectures won't need to include getrlimit and setrlimit.
> 
> Therefore drop getrlimit and setrlimit syscalls from the generic syscall
> list unless __ARCH_WANT_SET_GET_RLIMIT is defined by the architecture's
> unistd.h prior to including asm-generic/unistd.h, and adjust all architectures
> using the generic syscall list to define it so that no in-tree architectures
> are affected.
> 
> Cc: Arnd Bergmann <arnd@...db.de>
> Cc: James Hogan <james.hogan@...tec.com>
> Cc: linux-arch@...r.kernel.org
> Cc: linux-snps-arc@...ts.infradead.org
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: Mark Salter <msalter@...hat.com>
> Cc: Aurelien Jacquiot <a-jacquiot@...com>
> Cc: linux-c6x-dev@...ux-c6x.org
> Cc: Richard Kuo <rkuo@...eaurora.org>
> Cc: linux-hexagon@...r.kernel.org
> Cc: linux-metag@...r.kernel.org
> Cc: Jonas Bonn <jonas@...thpole.se>
> Cc: linux@...ts.openrisc.net
> Cc: Chen Liqin <liqin.linux@...il.com>
> Cc: Lennox Wu <lennox.wu@...il.com>
> Cc: Chris Metcalf <cmetcalf@...lanox.com>
> Cc: Guan Xuetao <gxt@...c.pku.edu.cn>
> Cc: Ley Foon Tan <lftan@...era.com>
> Cc: nios2-dev@...ts.rocketboards.org
> Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> Cc: uclinux-h8-devel@...ts.sourceforge.jp
> Signed-off-by: Yury Norov <ynorov@...iumnetworks.com>
> Acked-by: Arnd Bergmann <arnd@...db.de>
> Acked-by: Mark Salter <msalter@...hat.com> [c6x]
> Acked-by: James Hogan <james.hogan@...tec.com> [metag]
> Acked-by: Ley Foon Tan <lftan@...era.com> [nios2]
> Acked-by: Stafford Horne <shorne@...il.com> [openrisc]
> Acked-by: Will Deacon <will.deacon@....com> [arm64]
> Acked-by: Vineet Gupta <vgupta@...opsys.com> #arch/arc bits
> ---
>  arch/arc/include/uapi/asm/unistd.h       | 1 +
>  arch/arm64/include/uapi/asm/unistd.h     | 1 +
>  arch/c6x/include/uapi/asm/unistd.h       | 1 +
>  arch/h8300/include/uapi/asm/unistd.h     | 1 +
>  arch/hexagon/include/uapi/asm/unistd.h   | 1 +
>  arch/metag/include/uapi/asm/unistd.h     | 1 +
>  arch/nios2/include/uapi/asm/unistd.h     | 1 +
>  arch/openrisc/include/uapi/asm/unistd.h  | 1 +
>  arch/score/include/uapi/asm/unistd.h     | 1 +
>  arch/tile/include/uapi/asm/unistd.h      | 1 +
>  arch/unicore32/include/uapi/asm/unistd.h | 1 +
>  include/uapi/asm-generic/unistd.h        | 5 +++++

Don't forget to add __IGNORE_getrlimit and __IGNORE_setrlimit to
scripts/checksyscalls.sh, or you'll get warnings about missing syscalls.

Cheers
James

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