Thread (209 messages) 209 messages, 31 authors, 2005-12-22

Re: [PATCH 1/19] MUTEX: Introduce simple mutex implementation

From: Jakub Jelinek <hidden>
Date: 2005-12-14 12:20:16
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On Wed, Dec 14, 2005 at 11:57:12AM +0000, David Howells wrote:
 (1) Those that only have a limited exchange functionality. Several archs do
     fall into this category: arm, frv, mn10300, 68000, i386.
sparc (32-bit CPUs) fall into this category too.  V7 CPUs have just
atomic load byte and store 0xff, later CPUs have swap insn, which is like
ia32 xchg.
 (2) Those that have CMPXCHG or equivalent: 68020, i486+, x86_64, ia64, sparc.
sparc64 here.
 (3) Those that have LL/SC or equivalent: mips (some), alpha, powerpc, arm6.
	Jakub
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