From: Gustavo Padovan gustavo.padovan@collabora.co.uk
Now fence timeline is aware of the last signaled fence, as it receives the increment to the current value in sync_timeline_signal().
That allow us to remove .has_signaled() from timeline_ops as we can directly compare using timeline->value and fence->seqno in sync.c
Signed-off-by: Gustavo Padovan gustavo.padovan@collabora.co.uk --- drivers/staging/android/sw_sync.c | 16 ++-------------- drivers/staging/android/sync.c | 15 +++++++-------- drivers/staging/android/sync.h | 14 +++++--------- 3 files changed, 14 insertions(+), 31 deletions(-)
diff --git a/drivers/staging/android/sw_sync.c b/drivers/staging/android/sw_sync.c index af39ff5..428e22c 100644 --- a/drivers/staging/android/sw_sync.c +++ b/drivers/staging/android/sw_sync.c @@ -30,7 +30,7 @@ struct fence *sw_sync_pt_create(struct sw_sync_timeline *obj, u32 value) struct sw_sync_pt *pt;
pt = (struct sw_sync_pt *) - sync_pt_create(&obj->obj, sizeof(struct sw_sync_pt)); + sync_pt_create(&obj->obj, sizeof(struct sw_sync_pt), value);
pt->value = value;
@@ -38,15 +38,6 @@ struct fence *sw_sync_pt_create(struct sw_sync_timeline *obj, u32 value) } EXPORT_SYMBOL(sw_sync_pt_create);
-static int sw_sync_fence_has_signaled(struct fence *fence) -{ - struct sw_sync_pt *pt = (struct sw_sync_pt *)fence; - struct sw_sync_timeline *obj = - (struct sw_sync_timeline *)fence_parent(fence); - - return (pt->value > obj->value) ? 0 : 1; -} - static void sw_sync_timeline_value_str(struct sync_timeline *sync_timeline, char *str, int size) { @@ -64,7 +55,6 @@ static void sw_sync_fence_value_str(struct fence *fence, char *str, int size)
static struct sync_timeline_ops sw_sync_timeline_ops = { .driver_name = "sw_sync", - .has_signaled = sw_sync_fence_has_signaled, .timeline_value_str = sw_sync_timeline_value_str, .fence_value_str = sw_sync_fence_value_str, }; @@ -82,8 +72,6 @@ EXPORT_SYMBOL(sw_sync_timeline_create);
void sw_sync_timeline_inc(struct sw_sync_timeline *obj, u32 inc) { - obj->value += inc; - - sync_timeline_signal(&obj->obj); + sync_timeline_signal(&obj->obj, inc); } EXPORT_SYMBOL(sw_sync_timeline_inc); diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c index 1d14c83..8dd2181 100644 --- a/drivers/staging/android/sync.c +++ b/drivers/staging/android/sync.c @@ -90,7 +90,7 @@ void sync_timeline_destroy(struct sync_timeline *obj) } EXPORT_SYMBOL(sync_timeline_destroy);
-void sync_timeline_signal(struct sync_timeline *obj) +void sync_timeline_signal(struct sync_timeline *obj, unsigned int inc) { unsigned long flags; struct fence *fence, *next; @@ -99,6 +99,8 @@ void sync_timeline_signal(struct sync_timeline *obj)
spin_lock_irqsave(&obj->child_list_lock, flags);
+ obj->value += inc; + list_for_each_entry_safe(fence, next, &obj->active_list_head, active_list) { if (fence_is_signaled_locked(fence)) @@ -109,7 +111,8 @@ void sync_timeline_signal(struct sync_timeline *obj) } EXPORT_SYMBOL(sync_timeline_signal);
-struct fence *sync_pt_create(struct sync_timeline *obj, int size) +struct fence *sync_pt_create(struct sync_timeline *obj, int size, + unsigned int value) { unsigned long flags; struct fence *fence; @@ -124,7 +127,7 @@ struct fence *sync_pt_create(struct sync_timeline *obj, int size) spin_lock_irqsave(&obj->child_list_lock, flags); sync_timeline_get(obj); fence_init(fence, &android_fence_ops, &obj->child_list_lock, - obj->context, ++obj->value); + obj->context, value); list_add_tail(&fence->child_list, &obj->child_list_head); INIT_LIST_HEAD(&fence->active_list); spin_unlock_irqrestore(&obj->child_list_lock, flags); @@ -164,12 +167,8 @@ static void android_fence_release(struct fence *fence) static bool android_fence_signaled(struct fence *fence) { struct sync_timeline *parent = fence_parent(fence); - int ret;
- ret = parent->ops->has_signaled(fence); - if (ret < 0) - fence->status = ret; - return ret; + return (fence->seqno > parent->value) ? false : true; }
static bool android_fence_enable_signaling(struct fence *fence) diff --git a/drivers/staging/android/sync.h b/drivers/staging/android/sync.h index b56885c..627525c 100644 --- a/drivers/staging/android/sync.h +++ b/drivers/staging/android/sync.h @@ -28,19 +28,12 @@ struct sync_timeline; /** * struct sync_timeline_ops - sync object implementation ops * @driver_name: name of the implementation - * @has_signaled: returns: - * 1 if pt has signaled - * 0 if pt has not signaled - * <0 on error * @timeline_value_str: fill str with the value of the sync_timeline's counter * @fence_value_str: fill str with the value of the fence */ struct sync_timeline_ops { const char *driver_name;
- /* required */ - int (*has_signaled)(struct fence *fence); - /* optional */ void (*timeline_value_str)(struct sync_timeline *timeline, char *str, int size); @@ -117,23 +110,26 @@ void sync_timeline_destroy(struct sync_timeline *obj); /** * sync_timeline_signal() - signal a status change on a sync_timeline * @obj: sync_timeline to signal + * @inc: num to increment on timeline->value * * A sync implementation should call this any time one of it's fences * has signaled or has an error condition. */ -void sync_timeline_signal(struct sync_timeline *obj); +void sync_timeline_signal(struct sync_timeline *obj, unsigned int inc);
/** * sync_pt_create() - creates a sync pt * @parent: fence's parent sync_timeline * @size: size to allocate for this pt + * @inc: value of the fence * * Creates a new fence as a child of @parent. @size bytes will be * allocated allowing for implementation specific data to be kept after * the generic sync_timeline struct. Returns the fence object or * NULL in case of error. */ -struct fence *sync_pt_create(struct sync_timeline *parent, int size); +struct fence *sync_pt_create(struct sync_timeline *parent, int size, + unsigned int inc);
#ifdef CONFIG_DEBUG_FS