From: "Joseph S. Myers" <joseph@codesourcery.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Chung-Lin Tang <cltang@codesourcery.com>,
John Stultz <john.stultz@linaro.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Christoph Hellwig <hch@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ley Foon Tan <lftan@altera.com>,
Linux-Arch <linux-arch@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
LeyFoon Tan <lftan.linux@gmail.com>
Subject: Re: [PATCH 00/25] Change time_t and clock_t to 64 bit
Date: Mon, 19 May 2014 18:12:18 +0000 [thread overview]
Message-ID: <Pine.LNX.4.64.1405191806230.25418@digraph.polyomino.org.uk> (raw)
In-Reply-To: <5228220.XfC7baN05k@wuerfel>
On Mon, 19 May 2014, Arnd Bergmann wrote:
> A related question would be how you plan to support future CPU architectures
> that never had the 32-bit time_t in the kernel ABI. Would you also want
> to provide both 32 and 64 bit time_t to user space on those?
I'd expect those just to have 64-bit time_t in userspace (like x32) -
choosing a different type for time_t from the start is a lot simpler than
setting up a second set of interfaces with associated symbol versioning
for an existing architecture. This whole discussion started with the
question of whether Nios II should be such an architecture....
(Other variants may arise as well, e.g. architectures with existing kernel
support that only get glibc support later.)
--
Joseph S. Myers
joseph@codesourcery.com
next prev parent reply other threads:[~2014-05-19 18:12 UTC|newest]
Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-13 8:57 [PATCH 00/25] Change time_t and clock_t to 64 bit Ley Foon Tan
2014-05-13 9:02 ` [PATCH 01/25] asm-generic: " Ley Foon Tan
2014-05-13 9:15 ` James Hogan
2014-05-13 9:30 ` Thomas Gleixner
2014-05-13 9:30 ` Thomas Gleixner
2014-05-13 9:32 ` Ley Foon Tan
2014-05-13 9:32 ` Ley Foon Tan
2014-05-13 9:50 ` James Hogan
2014-05-13 9:50 ` James Hogan
2014-05-13 10:17 ` Ley Foon Tan
2014-05-13 10:21 ` Arnd Bergmann
2014-05-13 10:21 ` Arnd Bergmann
2014-05-13 12:07 ` Thomas Gleixner
2014-05-13 13:11 ` Geert Uytterhoeven
2014-05-13 13:38 ` Arnd Bergmann
2014-05-13 14:37 ` Thomas Gleixner
2014-05-13 10:22 ` James Hogan
2014-05-13 10:22 ` James Hogan
2014-05-14 3:47 ` H. Peter Anvin
2014-05-14 10:44 ` Geert Uytterhoeven
2014-05-13 9:02 ` [PATCH 02/25] arc: Add 32 bit time_t and clock_t Ley Foon Tan
2014-05-13 9:02 ` Ley Foon Tan
2014-05-13 9:02 ` [PATCH 03/25] arm: " Ley Foon Tan
2014-05-13 9:02 ` Ley Foon Tan
2014-05-13 9:02 ` [PATCH 04/25] avr32: " Ley Foon Tan
2014-05-13 9:02 ` Ley Foon Tan
2014-05-13 20:19 ` Hans-Christian Egtvedt
2014-05-14 1:54 ` Ley Foon Tan
2014-05-14 7:44 ` Hans-Christian Egtvedt
2014-05-14 21:39 ` H. Peter Anvin
2014-05-13 9:02 ` [PATCH 05/25] blackfin: " Ley Foon Tan
2014-05-13 9:02 ` Ley Foon Tan
2014-05-13 9:03 ` [PATCH 06/25] c6x: " Ley Foon Tan
2014-05-13 9:03 ` Ley Foon Tan
2014-05-13 9:03 ` [PATCH 08/25] frv: " Ley Foon Tan
2014-05-13 9:03 ` Ley Foon Tan
2014-05-13 9:03 ` [PATCH 09/25] hexagon: " Ley Foon Tan
2014-05-13 9:03 ` Ley Foon Tan
2014-05-13 9:03 ` [PATCH 10/25] m32r: " Ley Foon Tan
2014-05-13 9:03 ` Ley Foon Tan
2014-05-13 9:03 ` [PATCH 11/25] m68k: " Ley Foon Tan
2014-05-13 9:03 ` Ley Foon Tan
2014-05-13 9:04 ` [PATCH 12/25] metag: " Ley Foon Tan
2014-05-13 9:04 ` Ley Foon Tan
2014-05-13 9:22 ` James Hogan
2014-05-13 9:22 ` James Hogan
2014-05-13 9:28 ` Ley Foon Tan
2014-05-13 9:28 ` Ley Foon Tan
2014-05-13 9:05 ` [PATCH 13/25] microblaze: " Ley Foon Tan
2014-05-13 9:05 ` Ley Foon Tan
2014-05-13 9:05 ` [PATCH 14/25] mips: " Ley Foon Tan
2014-05-13 9:05 ` Ley Foon Tan
2014-05-13 9:05 ` [PATCH 15/25] mn10300: " Ley Foon Tan
2014-05-13 9:05 ` Ley Foon Tan
2014-05-13 9:05 ` [PATCH 16/25] openrisc: " Ley Foon Tan
2014-05-13 9:05 ` Ley Foon Tan
2014-05-13 9:30 ` Jonas Bonn
2014-05-13 9:30 ` Jonas Bonn
2014-05-13 9:41 ` Ley Foon Tan
2014-05-13 9:41 ` Ley Foon Tan
2014-05-13 9:06 ` [PATCH 17/25] parisc: " Ley Foon Tan
2014-05-13 9:06 ` Ley Foon Tan
2014-05-13 20:17 ` Helge Deller
2014-05-14 1:57 ` Ley Foon Tan
2014-05-15 0:34 ` H. Peter Anvin
2014-05-15 0:34 ` H. Peter Anvin
2014-05-13 9:06 ` [PATCH 19/25] s390: " Ley Foon Tan
2014-05-13 9:06 ` [PATCH 20/25] score: " Ley Foon Tan
2014-05-13 9:06 ` Ley Foon Tan
2014-05-13 9:06 ` [PATCH 21/25] sh: " Ley Foon Tan
2014-05-13 9:06 ` Ley Foon Tan
2014-05-13 9:06 ` [PATCH 22/25] sparc: " Ley Foon Tan
2014-05-13 9:06 ` Ley Foon Tan
2014-05-13 9:06 ` [PATCH 23/25] unicore32: " Ley Foon Tan
2014-05-13 9:06 ` Ley Foon Tan
2014-05-13 9:06 ` [PATCH 25/25] xtense: " Ley Foon Tan
2014-05-13 9:06 ` Ley Foon Tan
2014-05-13 9:10 ` [PATCH 07/25] cris: " Ley Foon Tan
2014-05-13 9:10 ` [PATCH 00/25] Change time_t and clock_t to 64 bit Geert Uytterhoeven
2014-05-13 9:23 ` Ley Foon Tan
2014-05-13 15:24 ` Christoph Hellwig
2014-05-13 15:33 ` Thomas Gleixner
2014-05-13 17:46 ` Christoph Hellwig
2014-05-13 18:10 ` Arnd Bergmann
2014-05-13 18:24 ` Geert Uytterhoeven
2014-05-13 19:32 ` Arnd Bergmann
2014-05-13 20:35 ` Geert Uytterhoeven
2014-05-14 11:00 ` Arnd Bergmann
2014-05-14 12:21 ` Thomas Gleixner
2014-05-14 14:01 ` Arnd Bergmann
2014-05-14 14:01 ` Arnd Bergmann
2014-05-14 14:46 ` Thomas Gleixner
2014-05-14 15:48 ` Arnd Bergmann
2014-05-15 15:47 ` James Bottomley
2014-05-15 16:36 ` Arnd Bergmann
2014-05-15 21:07 ` One Thousand Gnomes
2014-05-16 7:48 ` Christoph Hellwig
2014-05-16 23:06 ` H. Peter Anvin
2014-05-16 23:06 ` H. Peter Anvin
2014-05-14 21:33 ` John Stultz
2014-05-15 0:14 ` H. Peter Anvin
2014-05-15 3:32 ` Nicolas Pitre
2014-05-15 11:08 ` Arnd Bergmann
2014-05-15 11:18 ` Christoph Hellwig
2014-05-15 17:11 ` Chung-Lin Tang
2014-05-15 17:12 ` Chung-Lin Tang
2014-05-15 17:12 ` Chung-Lin Tang
2014-05-15 18:01 ` Joseph S. Myers
2014-05-15 19:18 ` Arnd Bergmann
2014-05-15 20:10 ` Joseph S. Myers
2014-05-15 20:38 ` Arnd Bergmann
2014-05-15 20:38 ` Arnd Bergmann
2014-05-15 21:05 ` Joseph S. Myers
2014-05-19 8:08 ` Arnd Bergmann
2014-05-19 8:08 ` Arnd Bergmann
2014-05-19 14:46 ` Joseph S. Myers
2014-05-19 17:22 ` Arnd Bergmann
2014-05-19 18:12 ` Joseph S. Myers [this message]
2014-05-19 18:20 ` Arnd Bergmann
2014-05-16 23:11 ` H. Peter Anvin
2014-05-16 23:47 ` Joseph S. Myers
2014-05-17 0:32 ` H. Peter Anvin
2014-05-18 13:46 ` Joseph S. Myers
2014-05-18 16:10 ` H. Peter Anvin
2014-05-18 18:18 ` Joseph S. Myers
2014-05-14 10:13 ` Ley Foon Tan
2014-05-14 10:33 ` Arnd Bergmann
2014-05-14 21:04 ` H. Peter Anvin
2014-05-13 18:15 ` Geert Uytterhoeven
2014-05-13 19:14 ` Thomas Gleixner
2014-05-14 3:36 ` [PATCH 24/25] x86: Add 32 bit time_t and clock_t Ley Foon Tan
2014-05-14 3:36 ` Ley Foon Tan
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