Messages in this thread | | | Date | Tue, 20 Dec 2005 19:37:00 +0000 | From | Russell King <> | Subject | Re: [patch 04/15] Generic Mutex Subsystem, add-atomic-call-func-x86_64.patch |
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On Tue, Dec 20, 2005 at 08:32:35PM +0100, Arjan van de Ven wrote: > > > So, to sum up, if this path is persued, mutexes will be a bloody > > disaster on ARM. We'd be far better off sticking to semaphores > > and ignoring this mutex stuff. > > on x86 the fastpath is the same for both basically.. is there a > fundamental reason it can't be for ARM?
If we're talking about implementing mutexes as a semaphore, then they will be identical. But what's the point of that? It's a semaphore which is just called a mutex.
So you might as well just save the patch noise and do nothing instead. It seems to me that you'll get _exactly_ the same result with a lot less effort.
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - 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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