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From: Thomas Gleixner <tglx@linutronix.de>
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Subject: Re: [PATCH v7] posix-timers: add clock_compare system call
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Date: Tue, 02 Apr 2024 11:24:59 +0200
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On Mon, Apr 01 2024 at 22:42, Mahesh Bandewar (=E0=A4=AE=E0=A4=B9=E0=A5=87=
=E0=A4=B6 =E0=A4=AC=E0=A4=82=E0=A4=A1=E0=A5=87=E0=A4=B5=E0=A4=BE=E0=A4=B0) =
wrote:
> On Mon, Apr 1, 2024 at 1:46=E2=80=AFPM Thomas Gleixner <tglx@linutronix.d=
e> wrote:
>> So if there is a backwards compability issue with PTP_SYS_OFFSET2, then
>> you need to introduce PTP_SYS_OFFSET3. The PTP_SYS_*2 variants were
>> introduced to avoid backwards compatibility issues as well, but
>> unfortunately that did not address the reserved fields problem for
>> PTP_SYS_OFFSET2. PTP_SYS_OFFSET_EXTENDED2 should just work, but maybe
>> the PTP maintainers want a full extension to '3'. Either way is fine.
>>
> https://patchwork.kernel.org/project/netdevbpf/patch/20240104212436.32760=
57-1-maheshb@google.com/
>
> This was my attempt to solve a similar issue with the new ioctl op to
> avoid backward compatibility issues.  Instead of flags I used the
> clockid_t in a similar fashion.

Works as well. I'm not seing the point for CLOCK_MONOTONIC and the
change logs are not really telling anything about the problem being
solved....

Thanks,

        tglx