Re: [this_cpu_xx V5 19/19] SLUB: Experimental new fastpath w/ointerrupt disable

[Christoph Lameter]

On Mon, 12 Oct 2009, Mathieu Desnoyers wrote:

> local_irq_enable();
> preempt_enable(); <- barrier()
>
> In the first scenario, the compiler barrier is at the beginning of the
> slow path function, which should impose less restrictions on the compiler
> optimizations.

Again: The next statement is a call to a function that calls the page
allocator. Its one call vs two for me. Plus the flow of things is much
cleaner and less obfuscated.



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/