mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 17:59:32 +00:00
![Chris Wilson](/assets/img/avatar_default.png)
To continue the onslaught of removing the assumption of a global execution ordering, another casualty is the engine->timeline. Without an actual timeline to track, it is overkill and we can replace it with a much less grand plain list. We still need a list of requests inflight, for the simple purpose of finding inflight requests (for retiring, resetting, preemption etc). 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/20190614164606.15633-3-chris@chris-wilson.co.uk
67 lines
1.7 KiB
C
67 lines
1.7 KiB
C
/*
|
|
* SPDX-License-Identifier: MIT
|
|
*
|
|
* Copyright © 2016 Intel Corporation
|
|
*/
|
|
|
|
#ifndef __I915_TIMELINE_TYPES_H__
|
|
#define __I915_TIMELINE_TYPES_H__
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/types.h>
|
|
|
|
#include "i915_active_types.h"
|
|
|
|
struct drm_i915_private;
|
|
struct i915_vma;
|
|
struct i915_timeline_cacheline;
|
|
struct i915_syncmap;
|
|
|
|
struct i915_timeline {
|
|
u64 fence_context;
|
|
u32 seqno;
|
|
|
|
struct mutex mutex; /* protects the flow of requests */
|
|
|
|
unsigned int pin_count;
|
|
const u32 *hwsp_seqno;
|
|
struct i915_vma *hwsp_ggtt;
|
|
u32 hwsp_offset;
|
|
|
|
struct i915_timeline_cacheline *hwsp_cacheline;
|
|
|
|
bool has_initial_breadcrumb;
|
|
|
|
/**
|
|
* List of breadcrumbs associated with GPU requests currently
|
|
* outstanding.
|
|
*/
|
|
struct list_head requests;
|
|
|
|
/* Contains an RCU guarded pointer to the last request. No reference is
|
|
* held to the request, users must carefully acquire a reference to
|
|
* the request using i915_active_request_get_request_rcu(), or hold the
|
|
* struct_mutex.
|
|
*/
|
|
struct i915_active_request last_request;
|
|
|
|
/**
|
|
* We track the most recent seqno that we wait on in every context so
|
|
* that we only have to emit a new await and dependency on a more
|
|
* recent sync point. As the contexts may be executed out-of-order, we
|
|
* have to track each individually and can not rely on an absolute
|
|
* global_seqno. When we know that all tracked fences are completed
|
|
* (i.e. when the driver is idle), we know that the syncmap is
|
|
* redundant and we can discard it without loss of generality.
|
|
*/
|
|
struct i915_syncmap *sync;
|
|
|
|
struct list_head link;
|
|
struct drm_i915_private *i915;
|
|
|
|
struct kref kref;
|
|
};
|
|
|
|
#endif /* __I915_TIMELINE_TYPES_H__ */
|