drm/i915/execlists: Distinguish the incomplete context notifies

Let the listener know that the context we just scheduled out was not
complete, and will be scheduled back in at a later point.

v2: Handle CONTEXT_STATUS_PREEMPTED in gvt by aliasing it to
CONTEXT_STATUS_OUT for the moment, gvt can expand upon the difference
later.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: "Zhenyu Wang" <zhenyuw@linux.intel.com>
Cc: "Wang, Zhi A" <zhi.a.wang@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171003203453.15692-3-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c
index d5892d2..f6ded47 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/scheduler.c
+++ b/drivers/gpu/drm/i915/gvt/scheduler.c
@@ -174,6 +174,7 @@ static int shadow_context_status_change(struct notifier_block *nb,
                atomic_set(&workload->shadow_ctx_active, 1);
                break;
        case INTEL_CONTEXT_SCHEDULE_OUT:
+       case INTEL_CONTEXT_SCHEDULE_PREEMPTED:
                atomic_set(&workload->shadow_ctx_active, 0);
                break;
        default:

diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 6ea5ecf..a89bc1f 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -617,7 +617,7 @@ execlist_cancel_port_requests(struct intel_engine_execlists *execlists)
        while (num_ports-- && port_isset(port)) {
                struct drm_i915_gem_request *rq = port_request(port);
 
-               execlists_context_status_change(rq, INTEL_CONTEXT_SCHEDULE_OUT);
+               execlists_context_status_change(rq, INTEL_CONTEXT_SCHEDULE_PREEMPTED);
                i915_gem_request_put(rq);
 
                memset(port, 0, sizeof(*port));

diff --git a/drivers/gpu/drm/i915/intel_lrc.h b/drivers/gpu/drm/i915/intel_lrc.h
index 314adee..689fde1 100644 (file)
--- a/drivers/gpu/drm/i915/intel_lrc.h
+++ b/drivers/gpu/drm/i915/intel_lrc.h
@@ -61,6 +61,7 @@
 enum {
        INTEL_CONTEXT_SCHEDULE_IN = 0,
        INTEL_CONTEXT_SCHEDULE_OUT,
+       INTEL_CONTEXT_SCHEDULE_PREEMPTED,
 };
 
 /* Logical Rings */