On Mon, 2007-08-27 at 15:15 -0700, Christoph Lameter wrote: > Hmmmm. One wild idea would be to use a priority futex for the slab lock? > That would make the slow paths interrupt safe without requiring interrupt > disable? Does a futex fit into the page struct? Very much puzzled at what you propose. in-kernel we use rt_mutex (has PI) or mutex, futexes are user-space. (on -rt spinlock_t == mutex == rt_mutex) Neither disable interrupts since they are sleeping locks. That said, on -rt we do not need to disable interrupts in the allocators because its a bug to call an allocator from raw irq context. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] 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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