linux-kernel - Re: [PATCH 16/20] futex: Implement sys_futex

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Message-ID: <2f2cf258-24f4-8bbb-a33e-c92aafa22a9f@collabora.com>
Date:   Wed, 15 Sep 2021 12:20:58 -0300
From:   André Almeida <andrealmeid@...labora.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-kernel@...r.kernel.org, bigeasy@...utronix.de,
        mingo@...hat.com, tglx@...utronix.de, kernel@...labora.com,
        krisman@...labora.com, rostedt@...dmis.org,
        linux-api@...r.kernel.org, dvhart@...radead.org,
        libc-alpha@...rceware.org, mtk.manpages@...il.com,
        dave@...olabs.net, arnd@...db.de
Subject: Re: [PATCH 16/20] futex: Implement sys_futex_waitv()

Às 11:07 de 15/09/21, Peter Zijlstra escreveu:
> From: André Almeida <andrealmeid@...labora.com>
> 
> Add support to wait on multiple futexes. This is the interface
> implemented by this syscall:
> 
> futex_waitv(struct futex_waitv *waiters, unsigned int nr_futexes,
> 	    unsigned int flags, struct timespec *timo)
> 
> --- a/include/uapi/asm-generic/unistd.h
> +++ b/include/uapi/asm-generic/unistd.h
> @@ -880,8 +880,11 @@ __SYSCALL(__NR_memfd_secret, sys_memfd_s
>  #define __NR_process_mrelease 448
>  __SYSCALL(__NR_process_mrelease, sys_process_mrelease)
>  
> +#define __NR_futex_waitv 449
> +__SC_COMP(__NR_futex_waitv, sys_futex_waitv)
> +

Oops, this should be __SYSCALL(), and not __SC_COMP(), my bad.