From: Johannes Stezenbach <js@convergence.de>
To: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>,
"Kevin D. Kissell" <kevink@mips.com>,
linux-mips@linux-mips.org
Subject: Re: Once again: test_and_set for CPUs w/o LL/SC
Date: Wed, 16 Oct 2002 18:30:38 +0200 [thread overview]
Message-ID: <20021016163038.GA26585@convergence.de> (raw)
In-Reply-To: <20021016125233.GA25227@convergence.de>
I wrote:
> sysmips is history with current glibc since the Linux kernel emulates
> LL/SC for CPUs that don't have it. This emulation is actually faster than
> sysmips. (You'd think it's slower because it's one syscall vs. two
> emulated instructions. But with LL/SC glibc can use test-and-set
^^^^^^^^^^^^
> which enables a more efficient linux-threads mutex implementation.)
Oops, I meant compare-and-swap.
Johannes
next prev parent reply other threads:[~2002-10-16 16:30 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-16 16:40 Once again: test_and_set for CPUs w/o LL/SC Johannes Stezenbach
2002-10-07 14:47 ` Johannes Stezenbach
2002-10-07 16:21 ` Kevin D. Kissell
2002-10-07 16:21 ` Kevin D. Kissell
2002-10-07 18:43 ` Johannes Stezenbach
2002-10-07 18:51 ` Daniel Jacobowitz
2002-10-15 17:52 ` Johannes Stezenbach
2002-10-08 7:38 ` Kevin D. Kissell
2002-10-08 7:38 ` Kevin D. Kissell
2002-10-15 15:36 ` Maciej W. Rozycki
2002-10-15 17:21 ` Johannes Stezenbach
2002-10-16 12:20 ` Maciej W. Rozycki
2002-10-16 12:52 ` Johannes Stezenbach
2002-10-16 16:30 ` Johannes Stezenbach [this message]
2002-10-17 9:47 ` Gleb O. Raiko
2002-10-17 12:02 ` Maciej W. Rozycki
2002-10-17 13:11 ` Johannes Stezenbach
2002-10-17 13:32 ` Gleb O. Raiko
2002-10-17 14:13 ` Johannes Stezenbach
2002-10-16 18:11 ` Johannes Stezenbach
2002-10-16 18:23 ` Johannes Stezenbach
2002-10-17 11:57 ` Maciej W. Rozycki
2002-10-17 13:25 ` Johannes Stezenbach
2002-10-15 15:17 ` Maciej W. Rozycki
2002-10-15 16:50 ` Johannes Stezenbach
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