linux-kernel - Re: [PATCH v3 2/2] perf bench: Add support for 32-bit systems with 64-bit time

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Message-ID: <20210917183328.fpybzahm5flcxexm@offworld>
Date:   Fri, 17 Sep 2021 11:33:28 -0700
From:   Davidlohr Bueso <dave@...olabs.net>
To:     Alistair Francis <alistair.francis@...nsource.wdc.com>
Cc:     linux-riscv@...ts.infradead.org, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org, alistair23@...il.com,
        namhyung@...nel.org, jolsa@...hat.com,
        alexander.shishkin@...ux.intel.com, mark.rutland@....com,
        acme@...nel.org, dvhart@...radead.org, peterz@...radead.org,
        mingo@...hat.com, tglx@...utronix.de, atish.patra@....com,
        arnd@...db.de, Alistair Francis <alistair.francis@....com>
Subject: Re: [PATCH v3 2/2] perf bench: Add support for 32-bit systems with
 64-bit time_t

On Fri, 17 Sep 2021, Alistair Francis wrote:

>From: Alistair Francis <alistair.francis@....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.

Not objecting, but this ifdefiry will hurt my eyes every time I have
to look at this file :)

Acked-by: Davidlohr Bueso <dbueso@...e.de>