On Fri, Dec 11, 2015 at 01:12:01PM +0000, [email protected] wrote: > From: John Harrison <[email protected]> > > 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 [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
