From: Pete Zaitcev <zaitcev@redhat.com>
Date: Wed, 25 Sep 2002 01:00:44 -0400
The cmpxchg() is used in kernel/pid.c:next_free_map():
if (cmpxchg(&map->page, NULL, (void *) page))
free_page(page);
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?
Indeed, we can't really make cmpxchg a requirement, many
cpus lack it.
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This archive was generated by hypermail 2b29 : Mon Sep 30 2002 - 22:00:21 EST