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References: <20210917061040.2270822-1-alistair.francis@opensource.wdc.com> <20210917061040.2270822-2-alistair.francis@opensource.wdc.com>
In-Reply-To: <20210917061040.2270822-2-alistair.francis@opensource.wdc.com>
From:   Arnd Bergmann <arnd@arndb.de>
Date:   Fri, 17 Sep 2021 09:33:12 +0200
Message-ID: <CAK8P3a2kAvrKvCUOhVouHUmY661OZHVAm9sefgXuZpLHMQg7Ow@mail.gmail.com>
Subject: Re: [PATCH v3 2/2] perf bench: Add support for 32-bit systems with
 64-bit time_t
To:     Alistair Francis <alistair.francis@opensource.wdc.com>
Cc:     linux-riscv <linux-riscv@lists.infradead.org>,
        linux-perf-users@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Alistair Francis <alistair23@gmail.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Jiri Olsa <jolsa@redhat.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Davidlohr Bueso <dave@stgolabs.net>,
        Darren Hart <dvhart@infradead.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Atish Patra <atish.patra@wdc.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Alistair Francis <alistair.francis@wdc.com>
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On Fri, Sep 17, 2021 at 8:10 AM Alistair Francis
<alistair.francis@opensource.wdc.com> wrote:
>
> From: Alistair Francis <alistair.francis@wdc.com>
>
> Some 32-bit architectures (such are 32-bit RISC-V) only have a 64-bit
> time_t and as such don't have the SYS_futex syscall. This patch will
> allow us to use the SYS_futex_time64 syscall on those platforms.
>
> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

Thanks for the follow-up!

Reviewed-by: Arnd Bergmann <arnd@arndb.de>