The ww_mutex implementation allows drivers to acquire locks on a set of locking primitives with detection of deadlocks. If a deadlock happens we can then backoff and reacquire the contended lock until we should finally be able to acquire all necessary locks for an operation. The problem is that handling those deadlocks was the burden of the user of the ww_mutex implementation and at least some users didn't got that right on the first try. So this patch adds two macros to lock and unlock multiple ww_mutex instances with the necessary deadlock handling. I'm not a big fan of macros, but it still better then implementing the same logic at least halve a dozen times. Please note that only the first two patches are more than compile tested. And this only cleans up the tip of the iceberg, just enough to show the potential of those two macros. Please review and/or comment, Christian. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
