diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2021-03-24 15:13:29 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2021-03-26 02:48:08 +0300 |
| commit | 7dbc19da5daf45cb16f3bff900b69d44c512c333 (patch) | |
| tree | 1feb297a3e6c0c3192c83ec7b096e2e2ffe039a0 /drivers/gpu/drm/i915/gem | |
| parent | 5b0a78ec0b5738046ab170e67cc28491cbee3f3f (diff) | |
| download | linux-7dbc19da5daf45cb16f3bff900b69d44c512c333.tar.xz | |
drm/i915: Extract active lookup engine to a helper
Move active engine lookup to exported i915_request_active_engine.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
[danvet: Slight rebase, engine->sched.lock is still called
engine->active.lock.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210324121335.2307063-2-tvrtko.ursulin@linux.intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gem')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_context.c | 34 |
1 files changed, 1 insertions, 33 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 4d2f40cf237b..9b031d88046f 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -386,38 +386,6 @@ static bool __cancel_engine(struct intel_engine_cs *engine) return intel_engine_pulse(engine) == 0; } -static bool -__active_engine(struct i915_request *rq, struct intel_engine_cs **active) -{ - struct intel_engine_cs *engine, *locked; - bool ret = false; - - /* - * Serialise with __i915_request_submit() so that it sees - * is-banned?, or we know the request is already inflight. - * - * Note that rq->engine is unstable, and so we double - * check that we have acquired the lock on the final engine. - */ - locked = READ_ONCE(rq->engine); - spin_lock_irq(&locked->active.lock); - while (unlikely(locked != (engine = READ_ONCE(rq->engine)))) { - spin_unlock(&locked->active.lock); - locked = engine; - spin_lock(&locked->active.lock); - } - - if (i915_request_is_active(rq)) { - if (!__i915_request_is_complete(rq)) - *active = locked; - ret = true; - } - - spin_unlock_irq(&locked->active.lock); - - return ret; -} - static struct intel_engine_cs *active_engine(struct intel_context *ce) { struct intel_engine_cs *engine = NULL; @@ -445,7 +413,7 @@ static struct intel_engine_cs *active_engine(struct intel_context *ce) /* Check with the backend if the request is inflight */ found = true; if (likely(rcu_access_pointer(rq->timeline) == ce->timeline)) - found = __active_engine(rq, &engine); + found = i915_request_active_engine(rq, &engine); i915_request_put(rq); if (found) |