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author | Maarten Lankhorst <maarten.lankhorst@canonical.com> | 2014-07-01 12:57:31 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-08 13:28:26 -0700 |
commit | 0f0d8406fb9c3c5ed1b1609a0f51c504c5b37aea (patch) | |
tree | 63dbd1e8f3f41406ea0715b0889d7bd6545301e2 /drivers/staging/android/sync.h | |
parent | dma-buf: use reservation objects (diff) | |
download | linux-dev-0f0d8406fb9c3c5ed1b1609a0f51c504c5b37aea.tar.xz linux-dev-0f0d8406fb9c3c5ed1b1609a0f51c504c5b37aea.zip |
android: convert sync to fence api, v6
Just to show it's easy.
Android syncpoints can be mapped to a timeline. This removes the need
to maintain a separate api for synchronization. I've left the android
trace events in place, but the core fence events should already be
sufficient for debugging.
v2:
- Call fence_remove_callback in sync_fence_free if not all fences have fired.
v3:
- Merge Colin Cross' bugfixes, and the android fence merge optimization.
v4:
- Merge with the upstream fixes.
v5:
- Fix small style issues pointed out by Thomas Hellstrom.
v6:
- Fix for updates to fence api.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: John Stultz <john.stultz@linaro.org>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/android/sync.h')
-rw-r--r-- | drivers/staging/android/sync.h | 79 |
1 files changed, 45 insertions, 34 deletions
diff --git a/drivers/staging/android/sync.h b/drivers/staging/android/sync.h index eaf57cccf626..66b0f431f63e 100644 --- a/drivers/staging/android/sync.h +++ b/drivers/staging/android/sync.h @@ -19,6 +19,7 @@ #include <linux/list.h> #include <linux/spinlock.h> #include <linux/wait.h> +#include <linux/fence.h> #include "uapi/sync.h" @@ -40,8 +41,6 @@ struct sync_fence; * -1 if a will signal before b * @free_pt: called before sync_pt is freed * @release_obj: called before sync_timeline is freed - * @print_obj: deprecated - * @print_pt: deprecated * @fill_driver_data: write implementation specific driver data to data. * should return an error if there is not enough room * as specified by size. This information is returned @@ -67,13 +66,6 @@ struct sync_timeline_ops { /* optional */ void (*release_obj)(struct sync_timeline *sync_timeline); - /* deprecated */ - void (*print_obj)(struct seq_file *s, - struct sync_timeline *sync_timeline); - - /* deprecated */ - void (*print_pt)(struct seq_file *s, struct sync_pt *sync_pt); - /* optional */ int (*fill_driver_data)(struct sync_pt *syncpt, void *data, int size); @@ -104,19 +96,21 @@ struct sync_timeline { /* protected by child_list_lock */ bool destroyed; + int context, value; struct list_head child_list_head; spinlock_t child_list_lock; struct list_head active_list_head; - spinlock_t active_list_lock; +#ifdef CONFIG_DEBUG_FS struct list_head sync_timeline_list; +#endif }; /** * struct sync_pt - sync point - * @parent: sync_timeline to which this sync_pt belongs + * @fence: base fence class * @child_list: membership in sync_timeline.child_list_head * @active_list: membership in sync_timeline.active_list_head * @signaled_list: membership in temporary signaled_list on stack @@ -127,19 +121,22 @@ struct sync_timeline { * signaled or error. */ struct sync_pt { - struct sync_timeline *parent; - struct list_head child_list; + struct fence base; + struct list_head child_list; struct list_head active_list; - struct list_head signaled_list; - - struct sync_fence *fence; - struct list_head pt_list; +}; - /* protected by parent->active_list_lock */ - int status; +static inline struct sync_timeline *sync_pt_parent(struct sync_pt *pt) +{ + return container_of(pt->base.lock, struct sync_timeline, + child_list_lock); +} - ktime_t timestamp; +struct sync_fence_cb { + struct fence_cb cb; + struct fence *sync_pt; + struct sync_fence *fence; }; /** @@ -149,9 +146,7 @@ struct sync_pt { * @name: name of sync_fence. Useful for debugging * @pt_list_head: list of sync_pts in the fence. immutable once fence * is created - * @waiter_list_head: list of asynchronous waiters on this fence - * @waiter_list_lock: lock protecting @waiter_list_head and @status - * @status: 1: signaled, 0:active, <0: error + * @status: 0: signaled, >0:active, <0: error * * @wq: wait queue for fence signaling * @sync_fence_list: membership in global fence list @@ -160,17 +155,15 @@ struct sync_fence { struct file *file; struct kref kref; char name[32]; - - /* this list is immutable once the fence is created */ - struct list_head pt_list_head; - - struct list_head waiter_list_head; - spinlock_t waiter_list_lock; /* also protects status */ - int status; +#ifdef CONFIG_DEBUG_FS + struct list_head sync_fence_list; +#endif + int num_fences; wait_queue_head_t wq; + atomic_t status; - struct list_head sync_fence_list; + struct sync_fence_cb cbs[]; }; struct sync_fence_waiter; @@ -184,14 +177,14 @@ typedef void (*sync_callback_t)(struct sync_fence *fence, * @callback_data: pointer to pass to @callback */ struct sync_fence_waiter { - struct list_head waiter_list; - - sync_callback_t callback; + wait_queue_t work; + sync_callback_t callback; }; static inline void sync_fence_waiter_init(struct sync_fence_waiter *waiter, sync_callback_t callback) { + INIT_LIST_HEAD(&waiter->work.task_list); waiter->callback = callback; } @@ -341,4 +334,22 @@ int sync_fence_cancel_async(struct sync_fence *fence, */ int sync_fence_wait(struct sync_fence *fence, long timeout); +#ifdef CONFIG_DEBUG_FS + +extern void sync_timeline_debug_add(struct sync_timeline *obj); +extern void sync_timeline_debug_remove(struct sync_timeline *obj); +extern void sync_fence_debug_add(struct sync_fence *fence); +extern void sync_fence_debug_remove(struct sync_fence *fence); +extern void sync_dump(void); + +#else +# define sync_timeline_debug_add(obj) +# define sync_timeline_debug_remove(obj) +# define sync_fence_debug_add(fence) +# define sync_fence_debug_remove(fence) +# define sync_dump() +#endif +int sync_fence_wake_up_wq(wait_queue_t *curr, unsigned mode, + int wake_flags, void *key); + #endif /* _LINUX_SYNC_H */ |