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From: "André Almeida" <andrealmeid@collabora.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Peter Zijlstra <peterz@infradead.org>
Cc: dave@stgolabs.net, libc-alpha@sourceware.org,
	dvhart@infradead.org, mingo@redhat.com,
	Paul Eggert <eggert@cs.ucla.edu>,
	linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
	mtk.manpages@gmail.com, kernel@collabora.com,
	krisman@collabora.com, rostedt@goodmis.org,
	bigeasy@linutronix.de, Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH 16/20] futex: Implement sys_futex_waitv()
Date: Thu, 16 Sep 2021 15:54:32 -0300	[thread overview]
Message-ID: <ea73969e-529f-b1af-9d47-ccaf0696ff0f@collabora.com> (raw)
In-Reply-To: <87tuika83y.ffs@tglx>

Às 11:49 de 16/09/21, Thomas Gleixner escreveu:
> On Wed, Sep 15 2021 at 10:34, Paul Eggert wrote:
> 
>> On 9/15/21 8:37 AM, Peter Zijlstra wrote:
>>> I utterly detest timespec.. it makes no sense what so ever.
>>>
>>> Can't we just, for new syscalls, simply use a s64 nsec argument and call
>>> it a day?
>>
>> This would stop working in the year 2262. Not a good idea.
> 
> Make it u64 and it stops in 2552, i.e. 584 years from now which is
> plenty. Lot's of the kernel internal timekeeping will stop working at
> that point, so that interface is the least of my worries. And TBH, my
> worries about the Y2552 problem are extremly close to zero.
> 

What do we win by using u64 instead of timespec?

Or what's so bad about timespec?

  reply	other threads:[~2021-09-16 18:55 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-15 14:07 [PATCH 00/20] futex: splitup and waitv syscall Peter Zijlstra
2021-09-15 14:07 ` [PATCH 01/20] futex: Move to kernel/futex/ Peter Zijlstra
2021-09-15 14:07 ` [PATCH 02/20] futex: Split out syscalls Peter Zijlstra
2021-09-15 14:07 ` [PATCH 03/20] futex: Rename {,__}{,un}queue_me() Peter Zijlstra
2021-09-15 14:07 ` [PATCH 04/20] futex: Rename futex_wait_queue_me() Peter Zijlstra
2021-09-15 14:07 ` [PATCH 05/20] futex: Rename: queue_{,un}lock() Peter Zijlstra
2021-09-15 14:07 ` [PATCH 06/20] futex: Rename __unqueue_futex() Peter Zijlstra
2021-09-15 14:07 ` [PATCH 07/20] futex: Rename hash_futex() Peter Zijlstra
2021-09-15 15:17   ` André Almeida
2021-09-15 15:22     ` Peter Zijlstra
2021-09-15 14:07 ` [PATCH 08/20] futex: Rename: {get,cmpxchg}_futex_value_locked() Peter Zijlstra
2021-09-15 14:07 ` [PATCH 09/20] futex: Split out PI futex Peter Zijlstra
2021-09-15 14:07 ` [PATCH 10/20] futex: Rename: hb_waiter_{inc,dec,pending}() Peter Zijlstra
2021-09-15 14:07 ` [PATCH 11/20] futex: Rename: match_futex() Peter Zijlstra
2021-09-15 14:07 ` [PATCH 12/20] futex: Rename mark_wake_futex() Peter Zijlstra
2021-09-15 14:07 ` [PATCH 13/20] futex: Split out requeue Peter Zijlstra
2021-09-15 14:07 ` [PATCH 14/20] futex: Split out wait/wake Peter Zijlstra
2021-09-15 14:07 ` [PATCH 15/20] futex: Simplify double_lock_hb() Peter Zijlstra
2021-09-15 15:13 ` [PATCH 00/20] futex: splitup and waitv syscall André Almeida
     [not found] ` <20210915141525.621568509@infradead.org>
2021-09-15 15:20   ` [PATCH 16/20] futex: Implement sys_futex_waitv() André Almeida
2021-09-15 15:37   ` Peter Zijlstra
2021-09-15 17:34     ` Paul Eggert
2021-09-16 14:49       ` Thomas Gleixner
2021-09-16 18:54         ` André Almeida [this message]
2021-09-15 18:47     ` Arnd Bergmann
2021-09-15 16:29   ` André Almeida
2021-09-15 18:24 ` [PATCH 00/20] futex: splitup and waitv syscall André Almeida

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