dma-buf: nuke DMA_FENCE_TRACE macros v2

Only the DRM GPU scheduler, radeon and amdgpu where using them and they depend
on a non existing config option to actually emit some code.

v2: keep the signal path as is for now

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210818105443.1578-1-christian.koenig@amd.com

drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c

@@ -246,7 +246,6 @@ bool amdgpu_fence_process(struct amdgpu_ring *ring)
 	struct amdgpu_fence_driver *drv = &ring->fence_drv;
 	struct amdgpu_device *adev = ring->adev;
 	uint32_t seq, last_seq;
-	int r;
 
 	do {
 		last_seq = atomic_read(&ring->fence_drv.last_seq);
@@ -278,12 +277,7 @@ bool amdgpu_fence_process(struct amdgpu_ring *ring)
 		if (!fence)
 			continue;
 
-		r = dma_fence_signal(fence);
+		dma_fence_signal(fence);
-		if (!r)
-			DMA_FENCE_TRACE(fence, "signaled from irq context\n");
-		else
-			BUG();
-
 		dma_fence_put(fence);
 		pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
 		pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
@@ -639,8 +633,6 @@ static bool amdgpu_fence_enable_signaling(struct dma_fence *f)
 	if (!timer_pending(&ring->fence_drv.fallback_timer))
 		amdgpu_fence_schedule_fallback(ring);
 
-	DMA_FENCE_TRACE(&fence->base, "armed on ring %i!\n", ring->idx);
-
 	return true;
 }
 

drivers/gpu/drm/radeon/radeon_fence.c

@@ -176,18 +176,11 @@ static int radeon_fence_check_signaled(wait_queue_entry_t *wait, unsigned mode,
 	 */
 	seq = atomic64_read(&fence->rdev->fence_drv[fence->ring].last_seq);
 	if (seq >= fence->seq) {
-		int ret = dma_fence_signal_locked(&fence->base);
+		dma_fence_signal_locked(&fence->base);
-
-		if (!ret)
-			DMA_FENCE_TRACE(&fence->base, "signaled from irq context\n");
-		else
-			DMA_FENCE_TRACE(&fence->base, "was already signaled\n");
-
 		radeon_irq_kms_sw_irq_put(fence->rdev, fence->ring);
 		__remove_wait_queue(&fence->rdev->fence_queue, &fence->fence_wake);
 		dma_fence_put(&fence->base);
-	} else
+	}
-		DMA_FENCE_TRACE(&fence->base, "pending\n");
 	return 0;
 }
 
@@ -422,8 +415,6 @@ static bool radeon_fence_enable_signaling(struct dma_fence *f)
 	fence->fence_wake.func = radeon_fence_check_signaled;
 	__add_wait_queue(&rdev->fence_queue, &fence->fence_wake);
 	dma_fence_get(f);
-
-	DMA_FENCE_TRACE(&fence->base, "armed on ring %i!\n", fence->ring);
 	return true;
 }
 
@@ -441,11 +432,7 @@ bool radeon_fence_signaled(struct radeon_fence *fence)
 		return true;
 
 	if (radeon_fence_seq_signaled(fence->rdev, fence->seq, fence->ring)) {
-		int ret;
+		dma_fence_signal(&fence->base);
-
-		ret = dma_fence_signal(&fence->base);
-		if (!ret)
-			DMA_FENCE_TRACE(&fence->base, "signaled from radeon_fence_signaled\n");
 		return true;
 	}
 	return false;
@@ -550,7 +537,6 @@ long radeon_fence_wait_timeout(struct radeon_fence *fence, bool intr, long timeo
 {
 	uint64_t seq[RADEON_NUM_RINGS] = {};
 	long r;
-	int r_sig;
 
 	/*
 	 * This function should not be called on !radeon fences.
@@ -567,9 +553,7 @@ long radeon_fence_wait_timeout(struct radeon_fence *fence, bool intr, long timeo
 		return r;
 	}
 
-	r_sig = dma_fence_signal(&fence->base);
+	dma_fence_signal(&fence->base);
-	if (!r_sig)
-		DMA_FENCE_TRACE(&fence->base, "signaled from fence_wait\n");
 	return r;
 }
 

drivers/gpu/drm/scheduler/sched_fence.c

@@ -50,26 +50,12 @@ static void __exit drm_sched_fence_slab_fini(void)
 
 void drm_sched_fence_scheduled(struct drm_sched_fence *fence)
 {
-	int ret = dma_fence_signal(&fence->scheduled);
+	dma_fence_signal(&fence->scheduled);
-
-	if (!ret)
-		DMA_FENCE_TRACE(&fence->scheduled,
-				"signaled from irq context\n");
-	else
-		DMA_FENCE_TRACE(&fence->scheduled,
-				"was already signaled\n");
 }
 
 void drm_sched_fence_finished(struct drm_sched_fence *fence)
 {
-	int ret = dma_fence_signal(&fence->finished);
+	dma_fence_signal(&fence->finished);
-
-	if (!ret)
-		DMA_FENCE_TRACE(&fence->finished,
-				"signaled from irq context\n");
-	else
-		DMA_FENCE_TRACE(&fence->finished,
-				"was already signaled\n");
 }
 
 static const char *drm_sched_fence_get_driver_name(struct dma_fence *fence)

include/linux/dma-fence.h

@@ -590,26 +590,4 @@ struct dma_fence *dma_fence_get_stub(void);
 struct dma_fence *dma_fence_allocate_private_stub(void);
 u64 dma_fence_context_alloc(unsigned num);
 
-#define DMA_FENCE_TRACE(f, fmt, args...) \
-	do {								\
-		struct dma_fence *__ff = (f);				\
-		if (IS_ENABLED(CONFIG_DMA_FENCE_TRACE))			\
-			pr_info("f %llu#%llu: " fmt,			\
-				__ff->context, __ff->seqno, ##args);	\
-	} while (0)
-
-#define DMA_FENCE_WARN(f, fmt, args...) \
-	do {								\
-		struct dma_fence *__ff = (f);				\
-		pr_warn("f %llu#%llu: " fmt, __ff->context, __ff->seqno,\
-			 ##args);					\
-	} while (0)
-
-#define DMA_FENCE_ERR(f, fmt, args...) \
-	do {								\
-		struct dma_fence *__ff = (f);				\
-		pr_err("f %llu#%llu: " fmt, __ff->context, __ff->seqno,	\
-			##args);					\
-	} while (0)
-
 #endif /* __LINUX_DMA_FENCE_H */