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From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: "y2038 Mailman List" <y2038@lists.linaro.org>,
	"Richard Henderson" <rth@twiddle.net>,
	"Ivan Kokshaysky" <ink@jurassic.park.msu.ru>,
	"Matt Turner" <mattst88@gmail.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"Deepa Dinamani" <deepa.kernel@gmail.com>,
	"Thomas Gleixner" <tglx@linutronix.de>,
	"Will Deacon" <will@kernel.org>,
	"Michal Koutný" <mkoutny@suse.com>,
	"Catalin Marinas" <catalin.marinas@arm.com>,
	"Dave Hansen" <dave.hansen@linux.intel.com>,
	alpha <linux-alpha@vger.kernel.org>
Subject: Re: [PATCH 11/23] y2038: rusage: use __kernel_old_timeval
Date: Wed, 13 Nov 2019 20:22:03 +0300	[thread overview]
Message-ID: <20191113172203.GE5130@uranus> (raw)
In-Reply-To: <CAK8P3a03FRfTsXADH+xfLsWxCu54JXvXbb-OdyGXXf88RNP34w@mail.gmail.com>

On Wed, Nov 13, 2019 at 11:02:12AM +0100, Arnd Bergmann wrote:
...
> 
> There are clearly too many time types at the moment, but I'm in the
> process of throwing out the ones we no longer need now.

Cool!

> I do have a number patches implementing other variants for the syscall,
> and I suppose that if we end up adding __kernel_rusage, that would
> have to go with a set of syscalls using 64-bit seconds/nanoseconds
> rather than the old 32/64 microseconds. I don't know what other
> changes remain that anyone would want from sys_waitid() now that
> it does support pidfd.
> 
> If there is still a need for a new waitid() replacement, that should take
> that new __kernel_rusage I think, but until then I hope we are fine
> with today's getrusage+waitid based on the current struct rusage.

Definitely.

> 
> BSD has wait6() to return separate rusage structures for 'self' and
> 'children', but I could not find any application (using the freebsd
> sources and debian code search) that actually uses that information,
> so there might not be any demand for that.

Thanks for detailed info Arnd!

  reply	other threads:[~2019-11-13 17:22 UTC|newest]

Thread overview: 80+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-08 21:02 [PATCH 00/23] y2038 cleanups Arnd Bergmann
2019-11-08 21:07 ` [PATCH 01/23] y2038: remove CONFIG_64BIT_TIME Arnd Bergmann
2019-11-20 22:28   ` [Y2038] " Ben Hutchings
2019-11-20 22:58     ` Dmitry Safonov
2019-11-08 21:07 ` [PATCH 02/23] y2038: add __kernel_old_timespec and __kernel_old_time_t Arnd Bergmann
2019-11-09 19:02   ` Deepa Dinamani
2019-11-20 22:30   ` [Y2038] " Ben Hutchings
2019-11-21 14:17     ` Arnd Bergmann
2019-11-08 21:07 ` [PATCH 03/23] y2038: vdso: change timeval to __kernel_old_timeval Arnd Bergmann
2019-11-13 21:56   ` Thomas Gleixner
2019-11-08 21:07 ` [PATCH 04/23] y2038: vdso: change timespec to __kernel_old_timespec Arnd Bergmann
2019-11-08 21:07 ` [PATCH 05/23] y2038: vdso: change time_t to __kernel_old_time_t Arnd Bergmann
2019-11-13 21:57   ` Thomas Gleixner
2019-11-08 21:07 ` [PATCH 06/23] y2038: vdso: nds32: open-code timespec_add_ns() Arnd Bergmann
2019-11-08 21:07 ` [PATCH 07/23] y2038: vdso: powerpc: avoid timespec references Arnd Bergmann
2019-11-20 22:43   ` [Y2038] " Ben Hutchings
2019-11-21 14:23     ` Arnd Bergmann
2019-11-21 16:25       ` Christophe Leroy
2019-11-27 11:03         ` Arnd Bergmann
2019-12-02 12:55           ` Christophe Leroy
2019-12-02 14:03             ` Arnd Bergmann
2019-11-08 21:07 ` [PATCH 08/23] y2038: ipc: remove __kernel_time_t reference from headers Arnd Bergmann
2019-11-20 22:49   ` [Y2038] " Ben Hutchings
2019-11-21 14:28     ` Arnd Bergmann
2019-11-08 21:07 ` [PATCH 09/23] y2038: stat: avoid 'time_t' in 'struct stat' Arnd Bergmann
2019-11-08 21:12 ` [PATCH 10/23] y2038: uapi: change __kernel_time_t to __kernel_old_time_t Arnd Bergmann
2019-11-09 19:03   ` Deepa Dinamani
2019-11-11 12:38   ` Christian Brauner
2019-11-08 21:12 ` [PATCH 11/23] y2038: rusage: use __kernel_old_timeval Arnd Bergmann
2019-11-12 21:09   ` Cyrill Gorcunov
2019-11-13 10:02     ` Arnd Bergmann
2019-11-13 17:22       ` Cyrill Gorcunov [this message]
2019-11-14  0:38       ` Christian Brauner
2019-11-14 10:18         ` Arnd Bergmann
2019-11-14 10:23           ` Christian Brauner
2019-11-08 21:12 ` [PATCH 12/23] y2038: syscalls: change remaining timeval to __kernel_old_timeval Arnd Bergmann
2019-11-11 12:44   ` Christian Brauner
2019-11-13 22:39   ` Rafael J. Wysocki
2019-11-08 21:12 ` [PATCH 13/23] y2038: socket: remove timespec reference in timestamping Arnd Bergmann
2019-11-09 19:03   ` Deepa Dinamani
2019-11-11 20:24   ` Arnd Bergmann
2019-11-08 21:12 ` [PATCH 14/23] y2038: make ns_to_compat_timeval use __kernel_old_timeval Arnd Bergmann
2019-11-08 21:12 ` [PATCH 15/23] y2038: elfcore: Use __kernel_old_timeval for process times Arnd Bergmann
2019-11-08 21:12 ` [PATCH 16/23] y2038: timerfd: Use timespec64 internally Arnd Bergmann
2019-11-13 21:49   ` Thomas Gleixner
2019-11-08 21:12 ` [PATCH 17/23] y2038: time: avoid timespec usage in settimeofday() Arnd Bergmann
2019-11-13 21:53   ` Thomas Gleixner
2019-11-14 11:06     ` Arnd Bergmann
2019-11-14 14:04       ` Thomas Gleixner
2019-11-14 14:35         ` Arnd Bergmann
2019-11-14 23:01   ` Abel Vesa
2019-11-15  7:58     ` Arnd Bergmann
2019-11-15 10:27       ` Rasmus Villemoes
2019-11-15 13:50         ` Arnd Bergmann
2019-11-08 21:12 ` [PATCH 18/23] y2038: itimer: compat handling to itimer.c Arnd Bergmann
2019-11-13 21:54   ` Thomas Gleixner
2019-11-08 21:12 ` [PATCH 19/23] y2038: use compat_{get,set}_itimer on alpha Arnd Bergmann
2019-12-02 13:13   ` Guenter Roeck
2019-11-08 21:12 ` [PATCH 20/23] y2038: move itimer reset into itimer.c Arnd Bergmann
2019-11-09 13:43   ` Ondrej Mosnacek
2019-11-09 21:02     ` Arnd Bergmann
2019-11-09 23:07       ` Ondrej Mosnacek
2019-11-11 10:57         ` Arnd Bergmann
2019-11-14  8:51           ` Ondrej Mosnacek
2019-11-14 10:51             ` Thomas Gleixner
2019-11-13 22:03   ` Thomas Gleixner
2019-11-08 21:12 ` [PATCH 21/23] y2038: itimer: change implementation to timespec64 Arnd Bergmann
2019-11-13 22:28   ` Thomas Gleixner
2019-11-14  2:06     ` Steven Rostedt
2019-11-14 10:48       ` Thomas Gleixner
2019-11-14 10:52       ` Arnd Bergmann
2019-11-14 10:51     ` Arnd Bergmann
2019-11-14 10:57       ` Thomas Gleixner
2019-11-21 16:52   ` [Y2038] " Ben Hutchings
2019-11-25 20:26     ` Arnd Bergmann
2019-11-08 21:12 ` [PATCH 22/23] [RFC] y2038: itimer: use ktime_t internally Arnd Bergmann
2019-11-13 22:30   ` Thomas Gleixner
2019-11-08 21:12 ` [PATCH 23/23] y2038: allow disabling time32 system calls Arnd Bergmann
2019-11-11 12:31   ` Christian Brauner
2019-11-13 21:40 ` [PATCH 00/23] y2038 cleanups Arnd Bergmann

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