From: "H. Peter Anvin" <hpa@zytor.com>
To: Arnd Bergmann <arnd@arndb.de>,
"Joseph S. Myers" <joseph@codesourcery.com>
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: Fri, 16 May 2014 16:11:35 -0700 [thread overview]
Message-ID: <53769B27.2090407@zytor.com> (raw)
In-Reply-To: <9236147.lyD24Zv5SZ@wuerfel>
On 05/15/2014 01:38 PM, Arnd Bergmann wrote:
>
> For practical purposes in the kernel, we may still want to use 64-bit
> nanoseconds: if we use a 96 bit struct timespec, that would be incompatible
> with the native type on 64-bit kernels, thus complicating the syscall
> emulation layer.
>
> I don't know why timespec on x32 uses 'long tv_nsec', it does seem
> problematic.
struct timespec is specified in POSIX as having type "long" for tv_nsec.
This, as Linus pointed out, is totally braindamaged.
x32 does not follow POSIX (Linus pretty much dictated that), and instead
does the __kernel_suseconds_t to match the native kernel type. The
proposal at some point was to try to push a snseconds_t into POSIX.
-hpa
next prev parent reply other threads:[~2014-05-16 23:12 UTC|newest]
Thread overview: 129+ 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 8:57 ` Ley Foon Tan
2014-05-13 9:02 ` [PATCH 01/25] asm-generic: " Ley Foon Tan
2014-05-13 9:02 ` Ley Foon Tan
2014-05-13 9:15 ` James Hogan
2014-05-13 9:30 ` Thomas Gleixner
2014-05-13 9:32 ` Ley Foon Tan
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 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
2014-05-14 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 ` 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 9:03 ` 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 9:05 ` [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
2014-05-13 9:06 ` [PATCH 19/25] s390: " Ley Foon Tan
2014-05-13 9:06 ` 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 ` 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 ` 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 ` 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 14:46 ` 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
2014-05-14 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 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 21:05 ` Joseph S. Myers
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
2014-05-19 18:20 ` Arnd Bergmann
2014-05-16 23:11 ` H. Peter Anvin [this message]
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 10:13 ` 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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