if (test_bit(DMA_FENCE_FLAG_USER_BITS, &fence->base.flags)) {
struct nouveau_fence_chan *fctx = nouveau_fctx(fence);
- if (!--fctx->notify_ref)
+ if (atomic_dec_and_test(&fctx->notify_ref))
drop = 1;
}
void
nouveau_fence_context_del(struct nouveau_fence_chan *fctx)
{
+ cancel_work_sync(&fctx->allow_block_work);
nouveau_fence_context_kill(fctx, 0);
nvif_event_dtor(&fctx->event);
fctx->dead = 1;
return ret;
}
+static void
+nouveau_fence_work_allow_block(struct work_struct *work)
+{
+ struct nouveau_fence_chan *fctx = container_of(work, struct nouveau_fence_chan,
+ allow_block_work);
+
+ if (atomic_read(&fctx->notify_ref) == 0)
+ nvif_event_block(&fctx->event);
+ else
+ nvif_event_allow(&fctx->event);
+}
+
void
nouveau_fence_context_new(struct nouveau_channel *chan, struct nouveau_fence_chan *fctx)
{
} args;
int ret;
+ INIT_WORK(&fctx->allow_block_work, nouveau_fence_work_allow_block);
INIT_LIST_HEAD(&fctx->flip);
INIT_LIST_HEAD(&fctx->pending);
spin_lock_init(&fctx->lock);
struct nouveau_fence *fence = from_fence(f);
struct nouveau_fence_chan *fctx = nouveau_fctx(fence);
bool ret;
+ bool do_work;
- if (!fctx->notify_ref++)
- nvif_event_allow(&fctx->event);
+ if (atomic_inc_return(&fctx->notify_ref) == 0)
+ do_work = true;
ret = nouveau_fence_no_signaling(f);
if (ret)
set_bit(DMA_FENCE_FLAG_USER_BITS, &fence->base.flags);
- else if (!--fctx->notify_ref)
- nvif_event_block(&fctx->event);
+ else if (atomic_dec_and_test(&fctx->notify_ref))
+ do_work = true;
+
+ if (do_work)
+ schedule_work(&fctx->allow_block_work);
return ret;
}
#define __NOUVEAU_FENCE_H__
#include <linux/dma-fence.h>
+#include <linux/workqueue.h>
#include <nvif/event.h>
struct nouveau_drm;
char name[32];
struct nvif_event event;
- int notify_ref, dead, killed;
+ struct work_struct allow_block_work;
+ atomic_t notify_ref;
+ int dead, killed;
};
struct nouveau_fence_priv {