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drm/i915: Pull scheduling under standalone lock

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Currently, the backend scheduling code abuses struct_mutex into order to
have a global lock to manipulate a temporary list (without widespread
allocation) and to protect against list modifications. This is an
extraneous coupling to struct_mutex and further can not extend beyond
the local device.

Pull all the code that needs to be under the one true lock into
i915_scheduler.c, and make it so.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181001144755.7978-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2018-10-01 15:47:54 +01:00
parent b16c765122
commit e2f3496e93
8 changed files with 411 additions and 361 deletions
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8
drivers/gpu/drm/i915/i915_request.h
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@@ -332,14 +332,6 @@ static inline bool i915_request_completed(const struct i915_request *rq)
return __i915_request_completed(rq, seqno);
}
static inline bool i915_sched_node_signaled(const struct i915_sched_node *node)
{
const struct i915_request *rq =
container_of(node, const struct i915_request, sched);
return i915_request_completed(rq);
}
void i915_retire_requests(struct drm_i915_private *i915);
/*