As the patches say, I don't think adding this spinlock will have too much of a performance impact (I couldn't notice anything in my limited testing), because the serializing locks are already held when acquiring this lock. I suppose it now serializes access between stuct_mutex and config.lock, but in most cases I don't think that's big.
Perhaps the ugliest change is spin_lock() in debugfs. But as I argue in the comments, if you can't get the lock there, register reads are also failing, and hung somewhere else. Ben _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
