Chris Wilson <[email protected]> writes: > Quoting Mika Kuoppala (2017-09-12 09:36:18) >> +static inline unsigned int >> +execlist_active_ports(const struct intel_engine_execlist * const el) >> { >> - const unsigned int i = port_index(port, el); >> + return READ_ONCE(el->port_count); > > READ_ONCE? Could we separate the racy check from the serialized uses > inside the tasklet where we do want the compiler to go to town?
Hmm so substitute execlist_active_ports() in i915_irq.c with READ_ONCE(el->port_count) and remove it in this function? -Mika > -Chris _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
