On Fri, Dec 11, 2015 at 01:12:01PM +0000, John.C.Harrison@xxxxxxxxx wrote: > From: John Harrison <John.C.Harrison@xxxxxxxxx> > > The notify function can be called many times without the seqno > changing. A large number of duplicates are to prevent races due to the > requirement of not enabling interrupts until requested. However, when > interrupts are enabled the IRQ handle can be called multiple times > without the ring's seqno value changing. This patch reduces the > overhead of these extra calls by caching the last processed seqno > value and early exiting if it has not changed. This is just plain wrong. Every user-interrupt is preceded by a seqno update. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
