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drm/i915/gt: Refactor heartbeat request construction and submission

Browse source 
Pull the individual strands of creating a custom heartbeat requests into
a pair of common functions. This will reduce the number of changes we
will need to make in future.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201224160213.29521-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-12-24 16:02:13 +00:00
parent 26ebc511e7
commit fe7bcfaeb2
1 changed files with 42 additions and 19 deletions
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61
drivers/gpu/drm/i915/gt/intel_engine_heartbeat.c
View file

@ -37,6 +37,18 @@ static bool next_heartbeat(struct intel_engine_cs *engine)
return true;
}
static struct i915_request *
heartbeat_create(struct intel_context *ce, gfp_t gfp)
{
struct i915_request *rq;
intel_context_enter(ce);
rq = __i915_request_create(ce, gfp);
intel_context_exit(ce);
return rq;
}
static void idle_pulse(struct intel_engine_cs *engine, struct i915_request *rq)
{
engine->wakeref_serial = READ_ONCE(engine->serial) + 1;
@ -45,6 +57,15 @@ static void idle_pulse(struct intel_engine_cs *engine, struct i915_request *rq)
engine->heartbeat.systole = i915_request_get(rq);
}
static void heartbeat_commit(struct i915_request *rq,
const struct i915_sched_attr *attr)
{
idle_pulse(rq->engine, rq);
__i915_request_commit(rq);
__i915_request_queue(rq, attr);
}
static void show_heartbeat(const struct i915_request *rq,
struct intel_engine_cs *engine)
{
@ -139,16 +160,11 @@ static void heartbeat(struct work_struct *wrk)
goto out;
}
intel_context_enter(ce);
rq = __i915_request_create(ce, GFP_NOWAIT | __GFP_NOWARN);
intel_context_exit(ce);
rq = heartbeat_create(ce, GFP_NOWAIT | __GFP_NOWARN);
if (IS_ERR(rq))
goto unlock;
idle_pulse(engine, rq);
__i915_request_commit(rq);
__i915_request_queue(rq, &attr);
heartbeat_commit(rq, &attr);
unlock:
mutex_unlock(&ce->timeline->mutex);
@ -187,17 +203,13 @@ static int __intel_engine_pulse(struct intel_engine_cs *engine)
GEM_BUG_ON(!intel_engine_has_preemption(engine));
GEM_BUG_ON(!intel_engine_pm_is_awake(engine));
intel_context_enter(ce);
rq = __i915_request_create(ce, GFP_NOWAIT | __GFP_NOWARN);
intel_context_exit(ce);
rq = heartbeat_create(ce, GFP_NOWAIT | __GFP_NOWARN);
if (IS_ERR(rq))
return PTR_ERR(rq);
__set_bit(I915_FENCE_FLAG_SENTINEL, &rq->fence.flags);
idle_pulse(engine, rq);
__i915_request_commit(rq);
__i915_request_queue(rq, &attr);
heartbeat_commit(rq, &attr);
GEM_BUG_ON(rq->sched.attr.priority < I915_PRIORITY_BARRIER);
return 0;
@ -273,8 +285,12 @@ int intel_engine_pulse(struct intel_engine_cs *engine)
int intel_engine_flush_barriers(struct intel_engine_cs *engine)
{
struct i915_sched_attr attr = {
.priority = I915_USER_PRIORITY(I915_PRIORITY_MIN),
};
struct intel_context *ce = engine->kernel_context;
struct i915_request *rq;
int err = 0;
int err;
if (llist_empty(&engine->barrier_tasks))
return 0;
@ -282,15 +298,22 @@ int intel_engine_flush_barriers(struct intel_engine_cs *engine)
if (!intel_engine_pm_get_if_awake(engine))
return 0;
rq = i915_request_create(engine->kernel_context);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
if (mutex_lock_interruptible(&ce->timeline->mutex)) {
err = -EINTR;
goto out_rpm;
}
idle_pulse(engine, rq);
i915_request_add(rq);
rq = heartbeat_create(ce, GFP_KERNEL);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
goto out_unlock;
}
heartbeat_commit(rq, &attr);
err = 0;
out_unlock:
mutex_unlock(&ce->timeline->mutex);
out_rpm:
intel_engine_pm_put(engine);
return err;