From: Lukasz Majewski <lukma@denx.de>
To: Florian Weimer <fw@deneb.enyo.de>
Cc: Joseph Myers <joseph@codesourcery.com>,
Alistair Francis <alistair23@gmail.com>,
Alistair Francis <alistair.francis@wdc.com>,
Zack Weinberg <zackw@panix.com>, Arnd Bergmann <arnd@arndb.de>,
GNU C Library <libc-alpha@sourceware.org>,
Adhemerval Zanella <adhemerval.zanella@linaro.org>,
Florian Weimer <fweimer@redhat.com>,
Carlos O'Donell <carlos@redhat.com>,
Stepan Golosunov <stepan@golosunov.pp.ru>
Subject: Re: [PATCH v8 1/3] y2038: Introduce internal for glibc struct __timespec64
Date: Wed, 25 Sep 2019 13:34:00 -0000 [thread overview]
Message-ID: <20190925153402.060a686c@jawa> (raw)
In-Reply-To: <877e5wtu7y.fsf@mid.deneb.enyo.de>
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Hi Florian,
> * Lukasz Majewski:
>
> >> I think it's generally for reviewers to say if their view is "I
> >> think this patch is OK but we should allow more time for other
> >> people to comment", rather than expecting patch contributors to
> >> judge when they need to wait further after a patch approval.
> >
> > Yes. I do understand.
> >
> > If I may ask - what is the "acceptable" time for other people from
> > community to jump in and comment the patch before it shall be
> > applied?
> >
> > Is it one week or more/less ?
>
> A week is more than enough, especially for patches that only touch
> internals like this one.
Thanks for clarification.
>
> Regarding the actual patch, I don't understand why tv_pad isn't an
> *anonymous* bit field.
The reason for this is that we may need to clear this padding if we
plan to fix some issues - for example in kernel 5.1.0 - 5.1.4 there is
a bug for x32 which may require explicit clearing the padding.
> This seems to introduce unnecessary variance
> between architectures and is incompatible with how glibc itself uses
> struct timespec.
The v3 of this patch had this field defined as anonymous padding.
However, there was strong objection for such approach [1].
> It's also inconsistent with the new comment in
> include/time.h (named padding is only needed if you need to
> zero-initialize the padding).
As explained above - some archs/kernels may require this named padding
for fixes.
Links:
[1] - https://sourceware.org/ml/libc-alpha/2019-05/msg00151.html
Best regards,
Lukasz Majewski
--
DENX Software Engineering GmbH, Managing Director: Wolfgang Denk
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next prev parent reply other threads:[~2019-09-25 13:34 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-18 21:16 [PATCH v8 0/3] y2038: Linux: Introduce __clock_settime64 function Lukasz Majewski
2019-09-18 21:16 ` [PATCH v8 3/3] y2038: linux: Provide __clock_settime64 implementation Lukasz Majewski
2019-09-18 21:43 ` Joseph Myers
2019-09-18 22:34 ` Lukasz Majewski
2019-09-19 22:01 ` Lukasz Majewski
2019-09-18 21:16 ` [PATCH v8 2/3] y2038: Provide conversion helpers for struct __timespec64 Lukasz Majewski
2019-09-19 20:17 ` Joseph Myers
2019-09-19 21:21 ` Lukasz Majewski
2019-09-19 21:29 ` Joseph Myers
2019-09-19 22:03 ` Lukasz Majewski
2019-09-19 22:17 ` Joseph Myers
2019-09-19 22:22 ` Lukasz Majewski
2019-09-18 21:16 ` [PATCH v8 1/3] y2038: Introduce internal for glibc " Lukasz Majewski
2019-09-19 20:14 ` Joseph Myers
2019-09-23 21:22 ` Lukasz Majewski
2019-09-25 0:47 ` Joseph Myers
2019-09-25 7:45 ` Lukasz Majewski
2019-09-25 12:51 ` Florian Weimer
2019-09-25 13:34 ` Lukasz Majewski [this message]
2019-09-25 13:40 ` Florian Weimer
2019-09-25 14:38 ` Lukasz Majewski
2019-09-25 16:29 ` Joseph Myers
2019-09-25 20:03 ` Lukasz Majewski
2019-09-25 12:43 ` Florian Weimer
2019-09-25 13:06 ` Lukasz Majewski
2019-09-25 13:07 ` Florian Weimer
2019-09-18 23:37 ` [PATCH v8 0/3] y2038: Linux: Introduce __clock_settime64 function Alistair Francis
2019-09-19 7:51 ` Lukasz Majewski
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