Re: [PATCH v2 1/2] perf bench futex: Use a 64-bit time_t

[Arnd Bergmann]

On Fri, Oct 15, 2021 at 2:56 AM Alistair Francis
<alistair.francis@xxxxxxxxxxxxxxxxxx> wrote:
>
> From: Alistair Francis <alistair.francis@xxxxxxx>
>
> Convert tools/perf to only use a 64-bit time_t. On 64-bit architectures
> this isn't a functional change. On 32-bit architectures we now only
> perform 64-bit time_t syscalls (__NR_futex_time64) and use a struct
> timespec64.
>
> This won't work on kernels before 5.1, but as perf is tied to the kernel
> that's ok.
>
> This allows us to build perf for 32-bit architectures with 64-bit time_t
> like RISC-V 32-bit.
>
> Signed-off-by: Alistair Francis <alistair.francis@xxxxxxx>

Reviewed-by: Arnd Bergmann <arnd@xxxxxxxx>