From: Florian Weimer <fw@deneb.enyo.de>
To: Rich Felker <dalias@libc.org>
Cc: musl@lists.openwall.com, Norbert Lange <nolange79@gmail.com>
Subject: Re: [musl] [BUG] sysconf implementing _SC_NPROCESSORS_(CONF|ONLN) incorrectly
Date: Tue, 14 Apr 2020 12:08:52 +0200 [thread overview]
Message-ID: <877dyinzuz.fsf@mid.deneb.enyo.de> (raw)
In-Reply-To: <20200410010255.GN11469@brightrain.aerifal.cx> (Rich Felker's message of "Thu, 9 Apr 2020 21:02:55 -0400")
* Rich Felker:
>> For glibc, we had to change our logic to artificially inflate the CPU
>> to 2 if we cannot determine it, as the more conservative choice.
>
> Wait, you mean some software is abusing these interfaces to omit
> memory barriers or something? *facepalm* *sigh*
Yes, indeed. glibc itself parses uname -v output for this purpose
(something we should probably remove, too).
next prev parent reply other threads:[~2020-04-14 10:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 10:29 Norbert Lange
2020-04-09 18:18 ` Szabolcs Nagy
2020-04-09 18:31 ` Florian Weimer
2020-04-10 1:02 ` Rich Felker
2020-04-14 10:08 ` Florian Weimer [this message]
2020-04-14 15:55 ` Rich Felker
2020-04-14 16:55 ` Florian Weimer
2020-04-15 9:38 ` Norbert Lange
2020-04-15 9:50 ` Florian Weimer
2020-04-15 9:57 ` Norbert Lange
2020-04-15 10:04 ` Szabolcs Nagy
2020-04-15 16:01 ` Rich Felker
2020-04-15 15:58 ` Rich Felker
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