linux-kernel - Re: [PATCH 10/19] csky: Signal handling

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Message-ID: <CAK8P3a3p2nbBG-NM9X-DHc6U61s65M8-3XDyx0CRsADSZ+prqw@mail.gmail.com>
Date:   Mon, 26 Mar 2018 15:04:01 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Guo Ren <ren_guo@...ky.com>
Cc:     linux-arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Jason Cooper <jason@...edaemon.net>,
        c-sky_gcc_upstream@...ky.com, gnu-csky@...tor.com,
        thomas.petazzoni@...tlin.com, wbx@...ibc-ng.org
Subject: Re: [PATCH 10/19] csky: Signal handling

On Sun, Mar 18, 2018 at 8:51 PM, Guo Ren <ren_guo@...ky.com> wrote:
> Signed-off-by: Guo Ren <ren_guo@...ky.com>
> ---
>  arch/csky/include/uapi/asm/sigcontext.h |  33 +++
>  arch/csky/include/uapi/asm/signal.h     | 164 ++++++++++++++
>  arch/csky/kernel/signal.c               | 379 ++++++++++++++++++++++++++++++++
>  3 files changed, 576 insertions(+)

Please have a look at arch/riscv and arch/nds32 for this, I think it can be
simplified. This is an incompatible change of course, but when we change
the system call ABI anyway, that is the right time to do it.


> +#define NSIG           32
> +typedef unsigned long sigset_t;
> +
> +#endif /* __KERNEL__ */
> +
> +#define SIGHUP          1
> +#define SIGINT          2
> +#define SIGQUIT                 3
> +#define SIGILL          4
> +#define SIGTRAP                 5
> +#define SIGABRT                 6
> +#define SIGIOT          6
> +#define SIGBUS          7
> +#define SIGFPE          8
> +#define SIGKILL                 9
> +#define SIGUSR1                10
> +#define SIGSEGV                11
> +#define SIGUSR2                12
> +#define SIGPIPE                13

In particular the constants should come from the asm-generic headers
rather than being duplicated. If you need anything special, it may be
better to modify the generic headers.

        Arnd