linux-kernel - Re: [PATCH 1/5] timekeeping: Remove timespec64 hack

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Date:   Fri, 27 Apr 2018 22:16:53 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        John Stultz <john.stultz@...aro.org>,
        y2038 Mailman List <y2038@...ts.linaro.org>,
        Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 1/5] timekeeping: Remove timespec64 hack

On Fri, Apr 27, 2018 at 3:40 PM, Arnd Bergmann <arnd@...db.de> wrote:

> The main upside of removing the hack is that printing the tv_sec
> field of a timespec64 structure can now use the %lld format
> string on all architectures without a cast to time64_t. Without
> this patch, the field is a 'long' type and would have to be printed
> using %ld on 64-bit architectures.

As mentioned in another thread, this patch is now also a
prerequisite for the cleaned up patch "[v3] x86: Convert
x86_platform_ops to timespec64", which used to rely
on an ugly hack to avoid a forward-declaration of
'struct timespec64', which is now allowed on 64-bit
architectures after timespec64 is a structure rather than
a macro now.

      Arnd