Messages in this thread | | | From | Rusty Russell <> | Subject | Re: When should we use likely() / unlikely() / get_unaligned() ? | Date | Mon, 09 Feb 2004 10:00:47 +1100 |
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In message <1076238833.12587.229.camel@imladris.demon.co.uk> you write: > To be honest, I'm more interested in the case of get_unaligned(). The > principle is fairly similar -- the ratio between the performance of the > inline and the exception cases varies wildly from architecture to > architecture. But the range is far wider -- we now support architectures > in 2.6 where alignment fixups _cannot_ happen, and the cost of the > 'exception' case should be considered infinite.
Um, we do? I thought it was compulsory in the kernel, otherwise networking breaks on packets w/ wierd hardware headers.
Rusty. -- Anyone who quotes me in their sig is an idiot. -- Rusty Russell. - 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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