From: Ralf Baechle <ralf@oss.sgi.com>
To: "H. J. Lu" <hjl@lucon.org>
Cc: linux-mips@oss.sgi.com, GNU C Library <libc-alpha@sources.redhat.com>
Subject: Re: PATCH: Always use ll/sc for mips
Date: Tue, 2 Jul 2002 22:06:51 +0200 [thread overview]
Message-ID: <20020702220651.B9566@dea.linux-mips.net> (raw)
In-Reply-To: <20020702114045.A16197@lucon.org>; from hjl@lucon.org on Tue, Jul 02, 2002 at 11:40:45AM -0700
On Tue, Jul 02, 2002 at 11:40:45AM -0700, H. J. Lu wrote:
> The ll/sc emulation is implemented in 2.4.0 and above. This patch makes
> glibc always use ll/sc.
Which means the overhead of two syscalls instead of one sysmips() call
for something that is assumed to be dirt cheap. R3000, R5900 etc.
users won't this patch you, which'll have significant impact on their
glibc performance.
Ralf
next prev parent reply other threads:[~2002-07-02 20:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-02 18:40 PATCH: Always use ll/sc for mips H. J. Lu
2002-07-02 20:06 ` Ralf Baechle [this message]
2002-07-02 21:04 ` H. J. Lu
2002-07-04 8:00 ` Maciej W. Rozycki
2002-07-04 8:47 ` Kevin D. Kissell
2002-07-04 8:47 ` Kevin D. Kissell
2002-07-04 13:57 ` Ralf Baechle
2002-07-04 14:14 ` Hiroyuki Machida
2002-07-08 17:21 ` Jun Sun
2002-07-08 17:34 ` Ralf Baechle
2002-07-16 0:59 ` Ulrich Drepper
2002-07-16 15:22 ` Maciej W. Rozycki
2002-07-16 15:42 ` H. J. Lu
2002-07-17 8:31 ` Maciej W. Rozycki
2002-07-17 15:01 ` H. J. Lu
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