diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_engine_types.h')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_engine_types.h | 31 |
1 files changed, 3 insertions, 28 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_types.h b/drivers/gpu/drm/i915/gt/intel_engine_types.h index 8de92fd7d392..c400aaa2287b 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_types.h +++ b/drivers/gpu/drm/i915/gt/intel_engine_types.h @@ -22,6 +22,7 @@ #include "i915_pmu.h" #include "i915_priolist_types.h" #include "i915_selftest.h" +#include "intel_breadcrumbs_types.h" #include "intel_sseu.h" #include "intel_timeline_types.h" #include "intel_uncore.h" @@ -373,34 +374,8 @@ struct intel_engine_cs { */ struct ewma__engine_latency latency; - /* Rather than have every client wait upon all user interrupts, - * with the herd waking after every interrupt and each doing the - * heavyweight seqno dance, we delegate the task (of being the - * bottom-half of the user interrupt) to the first client. After - * every interrupt, we wake up one client, who does the heavyweight - * coherent seqno read and either goes back to sleep (if incomplete), - * or wakes up all the completed clients in parallel, before then - * transferring the bottom-half status to the next client in the queue. - * - * Compared to walking the entire list of waiters in a single dedicated - * bottom-half, we reduce the latency of the first waiter by avoiding - * a context switch, but incur additional coherent seqno reads when - * following the chain of request breadcrumbs. Since it is most likely - * that we have a single client waiting on each seqno, then reducing - * the overhead of waking that client is much preferred. - */ - struct intel_breadcrumbs { - spinlock_t irq_lock; - struct list_head signalers; - - struct list_head signaled_requests; - - struct irq_work irq_work; /* for use from inside irq_lock */ - - unsigned int irq_enabled; - - bool irq_armed; - } breadcrumbs; + /* Keep track of all the seqno used, a trail of breadcrumbs */ + struct intel_breadcrumbs *breadcrumbs; struct intel_engine_pmu { /** |