On Tue, 2010-08-24 at 14:25 +0800, wu zhangjin wrote: > So, this patch is necessary to fix the deadlock and icache problem on > RMI XLS and it will also improve the performance via reducing the > unnecessary ipi interrupt on RML XLS and Cavium. I was about to mention the performance boost of the patch even on machines not affected by the lock up. When you enable function tracing, it can update 22,000 locations. Doing a cache invalidate 22,000 times in a row, is not very efficient. Only a full cache flush is needed at the end of the update (except for the module updates, which are done on a live system). -- Steve
