From: Oleg Drokin <green@namesys.com>
To: Pete Zaitcev <zaitcev@redhat.com>
Cc: mingo@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: cmpxchg in 2.5.38
Date: Wed, 25 Sep 2002 11:18:20 +0400 [thread overview]
Message-ID: <20020925111820.A23225@namesys.com> (raw)
In-Reply-To: <20020925010044.A4464@devserv.devel.redhat.com>
Hello!
On Wed, Sep 25, 2002 at 01:00:44AM -0400, Pete Zaitcev wrote:
> The cmpxchg() is used in kernel/pid.c:next_free_map():
> It is implemented on alpha, i386, ia64, ppc64, ppc, sparc64,
> x86_64, but not on mips, cris, arm, s390, s390x, sparc, sh, parisc.
> Do all architectures have to have it?
Ingo said that arches that cannot do cmpxchg in hardware should
provide spinlock-based version.
Bye,
Oleg
next prev parent reply other threads:[~2002-09-25 7:13 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-25 5:00 Pete Zaitcev
2002-09-25 4:54 ` David S. Miller
2002-09-25 7:18 ` Oleg Drokin [this message]
2002-09-25 7:47 ` David S. Miller
2002-09-25 8:07 ` Oleg Drokin
2002-09-25 8:26 ` Ingo Molnar
2002-09-25 8:48 ` [patch] pidhash-2.5.38-A0 Ingo Molnar
2002-09-25 12:04 ` cmpxchg in 2.5.38 Geert Uytterhoeven
2002-09-25 17:42 ` Pete Zaitcev
2002-09-25 19:34 ` Ingo Molnar
2002-09-25 20:03 ` David S. Miller
2002-09-25 18:59 ` David S. Miller
2002-09-25 19:02 ` David S. Miller
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