On Wed, Mar 21, 2007 at 10:22:31AM +0100, Eric Dumazet wrote: > In order to avoid a cache miss in kmem_cache_free() on NUMA and reduce hot > path length, we could exploit the following common facts. > > 1) MAX_NUMNODES <= 64 > > 2) alignment of 'struct kmem_cache *' can be >= 64 > > The following patch changes the page->lru.next to contain not only the > 'struct kmem_cache *' pointer, but also the nodeid in the low order bits. >
It might be cleaner to just put it into flags on 64bit. There is enough space there and we don't really care about 32bit NUMA machines. -Andi - 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/
