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On Tue, Aug 12, 2003 at 11:14:17PM -0700, Roland McGrath wrote: > The following header patches add the read_trylock macro, implementing it > fully for i386 and leaving other architectures with an always-fail fallback. > Other architectures include/asm-foo/spinlock.h files should define > _raw_read_trylock appropriately and define HAVE_ARCH_RAW_READ_TRYLOCK. But > until they do, machine-independent code can use read_trylock for optimization > purposes (i.e. where it falls back to using read_lock) and architectures that > haven't implemented it will just not be getting the optimization. I strongy dislike the always-fail case. Just let the other arches fail until the arch maintainers update them. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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