From: Florian Weimer <fweimer@redhat.com>
To: Andreas Schwab <schwab@suse.de>
Cc: Arnd Bergmann <arnd@arndb.de>, Zack Weinberg <zackw@panix.com>,
Alistair Francis <alistair.francis@wdc.com>,
GNU C Library <libc-alpha@sourceware.org>
Subject: Re: [RFC v2 08/20] sysdeps/wait: Use waitid if avaliable
Date: Mon, 08 Jul 2019 14:36:54 +0200 [thread overview]
Message-ID: <87bly4snx5.fsf@oldenburg2.str.redhat.com> (raw)
In-Reply-To: <mvmlfx8emc2.fsf@suse.de> (Andreas Schwab's message of "Mon, 08 Jul 2019 14:34:53 +0200")
* Andreas Schwab:
> On Jul 08 2019, Florian Weimer <fweimer@redhat.com> wrote:
>
>> * Andreas Schwab:
>>
>>>> But this would still break if people actually go ahead with the removal
>>>> of the 32-bit system calls (something I think is quite impossible to do,
>>>> but some people seem to disagree).
>>>
>>> I'd expect that the current futex syscall will continue to work for all
>>> its subfunctions without absolute timestamp.
>>
>> I thought that RV32 just wouldn't have a futex system call at all?
>
> I'm talking about legacy 32-bit architectures.
Ah. Yes, I one would hope that.
But there has been talk of a kernel option to remove it even there, and
a suggestion that glibc would try the 64-bit time_t system call first,
to see if it is available, and prefer that.
I think this would be quite … wrong.
Thanks,
Florian
next prev parent reply other threads:[~2019-07-08 12:37 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-25 0:08 [RFC v2 00/20] RISC-V glibc port for the 32-bit Alistair Francis
2019-06-25 0:08 ` [RFC v2 01/20] y2038: Introduce internal for glibc struct __timespec64 Alistair Francis
2019-06-25 0:08 ` [RFC v2 02/20] y2038: Provide conversion helpers for " Alistair Francis
2019-06-25 0:08 ` [RFC v2 03/20] y2038: linux: Provide __clock_settime64 implementation Alistair Francis
2019-06-25 11:05 ` Arnd Bergmann
2019-06-25 15:51 ` Lukasz Majewski
2019-06-25 16:39 ` Arnd Bergmann
2019-06-26 9:07 ` Lukasz Majewski
2019-06-26 12:36 ` Arnd Bergmann
2019-06-26 15:03 ` Lukasz Majewski
2019-06-26 15:11 ` Florian Weimer
2019-06-26 22:49 ` Lukasz Majewski
2019-06-27 7:14 ` Florian Weimer
2019-06-27 7:36 ` Lukasz Majewski
2019-06-26 18:58 ` Arnd Bergmann
2019-06-26 22:55 ` Lukasz Majewski
2019-06-27 7:45 ` Arnd Bergmann
2019-06-27 10:35 ` Lukasz Majewski
2019-06-27 13:32 ` Arnd Bergmann
2019-06-27 14:07 ` Lukasz Majewski
2019-06-27 14:57 ` Arnd Bergmann
2019-06-27 15:23 ` Lukasz Majewski
2019-06-27 15:45 ` Arnd Bergmann
2019-06-27 16:16 ` Lukasz Majewski
2019-06-27 21:25 ` Arnd Bergmann
2019-06-27 22:08 ` Lukasz Majewski
2019-07-04 0:04 ` Alistair Francis
2019-07-04 8:13 ` Lukasz Majewski
2019-07-08 9:32 ` Lukasz Majewski
2019-06-27 20:08 ` Alistair Francis
2019-06-27 21:02 ` Lukasz Majewski
2019-07-08 10:49 ` Joseph Myers
2019-06-25 0:08 ` [RFC v2 04/20] include/time.h: Fix conflicting timespec types on 32-bit Alistair Francis
2019-06-25 11:17 ` Arnd Bergmann
2019-06-25 22:20 ` Alistair Francis
2019-06-25 0:08 ` [RFC v2 05/20] sysdeps/nanosleep: Use clock_nanosleep_time64 if avaliable Alistair Francis
2019-06-25 8:24 ` Andreas Schwab
2019-06-25 8:59 ` Arnd Bergmann
2019-06-26 18:20 ` Alistair Francis
2019-06-25 0:09 ` [RFC v2 06/20] sysdeps/futex: Use futex_time64 " Alistair Francis
2019-06-25 11:14 ` Florian Weimer
2019-06-25 11:26 ` Andreas Schwab
2019-06-25 11:41 ` Arnd Bergmann
2019-06-25 12:06 ` Florian Weimer
2019-06-25 13:32 ` Arnd Bergmann
2019-06-25 0:09 ` [RFC v2 07/20] sysdeps/gettimeofday: Use clock_gettime64 " Alistair Francis
2019-06-27 13:14 ` Adhemerval Zanella
2019-07-03 23:49 ` Alistair Francis
2019-07-24 20:22 ` Joseph Myers
2019-07-24 23:00 ` Alistair Francis
2019-07-25 12:57 ` Arnd Bergmann
2019-07-25 17:03 ` Paul Eggert
2019-07-25 17:21 ` Zack Weinberg
2019-07-25 18:53 ` Arnd Bergmann
2019-07-26 13:01 ` Florian Weimer
2019-07-26 13:08 ` Zack Weinberg
2019-07-25 21:23 ` Joseph Myers
2019-06-25 0:09 ` [RFC v2 08/20] sysdeps/wait: Use waitid " Alistair Francis
2019-06-25 8:16 ` Andreas Schwab
2019-06-25 10:55 ` Zack Weinberg
2019-06-25 11:06 ` Florian Weimer
2019-06-25 12:00 ` Arnd Bergmann
2019-06-25 12:10 ` Florian Weimer
2019-06-25 13:29 ` Arnd Bergmann
2019-06-25 13:39 ` Arnd Bergmann
2019-06-25 13:47 ` Florian Weimer
2019-06-25 14:04 ` Arnd Bergmann
2019-06-25 14:08 ` Florian Weimer
2019-06-25 14:21 ` Arnd Bergmann
2019-06-25 14:29 ` Florian Weimer
2019-06-26 14:37 ` Arnd Bergmann
2019-06-26 15:48 ` Florian Weimer
2019-06-26 16:28 ` Andreas Schwab
2019-07-08 12:09 ` Florian Weimer
2019-07-08 12:34 ` Andreas Schwab
2019-07-08 12:36 ` Florian Weimer [this message]
2019-07-09 22:57 ` Alistair Francis
2019-07-10 7:33 ` Andreas Schwab
2019-07-10 17:47 ` Alistair Francis
2019-07-25 15:49 ` Joseph Myers
2019-06-26 21:08 ` Arnd Bergmann
2019-06-27 7:33 ` Florian Weimer
2019-06-27 8:25 ` Andreas Schwab
2019-06-27 10:21 ` Arnd Bergmann
2019-06-27 11:12 ` Florian Weimer
2019-06-27 15:24 ` Arnd Bergmann
2019-07-03 23:50 ` Alistair Francis
2019-06-25 23:51 ` Alistair Francis
2019-06-25 0:09 ` [RFC v2 09/20] sysdeps/getrlimit: Use prlimit64 " Alistair Francis
2019-06-25 11:11 ` Florian Weimer
2019-06-25 20:45 ` Alistair Francis
2019-06-25 21:10 ` Florian Weimer
2019-06-25 23:38 ` Alistair Francis
2019-06-25 0:09 ` [RFC v2 10/20] Documentation for the RISC-V 32-bit port Alistair Francis
2019-06-25 0:09 ` [RFC v2 11/20] RISC-V: Use 64-bit time_t and off_t for RV32 and RV64 Alistair Francis
2019-06-25 0:09 ` [RFC v2 12/20] RISC-V: Support dynamic loader for the 32-bit Alistair Francis
2019-06-25 0:09 ` [RFC v2 13/20] RISC-V: Add path of library directories " Alistair Francis
2019-06-25 0:09 ` [RFC v2 14/20] RISC-V: The ABI implementation " Alistair Francis
2019-06-25 0:09 ` [RFC v2 15/20] RISC-V: Hard float support for the 32 bit Alistair Francis
2019-06-25 0:09 ` [RFC v2 16/20] RISC-V: Regenerate ULPs of RISC-V Alistair Francis
2019-06-25 0:09 ` [RFC v2 17/20] RISC-V: Add ABI lists Alistair Francis
2019-06-25 0:09 ` [RFC v2 18/20] RISC-V: Build Infastructure for the 32-bit Alistair Francis
2019-06-25 0:09 ` [RFC v2 19/20] RISC-V: Fix llrint and llround missing exceptions on RV32 Alistair Francis
2019-06-25 0:09 ` [RFC v2 20/20] Add RISC-V 32-bit target to build-many-glibcs.py Alistair Francis
2019-06-25 11:15 ` [RFC v2 00/20] RISC-V glibc port for the 32-bit Florian Weimer
2019-06-25 12:07 ` Arnd Bergmann
2019-07-04 8:47 ` Jim Wilson
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