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.
Nuke them and clean up the dma_fence_signal* return value.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/dma-buf/dma-fence.c | 44 +++++------------------
drivers/dma-buf/st-dma-fence.c | 12 ++-----
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 10 +-----
drivers/gpu/drm/radeon/radeon_fence.c | 24 +++----------
drivers/gpu/drm/scheduler/sched_fence.c | 18 ++--------
include/linux/dma-fence.h | 32 +++--------------
6 files changed, 23 insertions(+), 117 deletions(-)
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c
index ce0f5eff575d..21cba0f74e69 100644
--- a/drivers/dma-buf/dma-fence.c
+++ b/drivers/dma-buf/dma-fence.c
@@ -350,12 +350,9 @@ void __dma_fence_might_wait(void)
*
* Unlike dma_fence_signal_timestamp(), this function must be called with
* &dma_fence.lock held.
- *
- * Returns 0 on success and a negative error value when @fence has been
- * signalled already.
*/
-int dma_fence_signal_timestamp_locked(struct dma_fence *fence,
- ktime_t timestamp)
+void dma_fence_signal_timestamp_locked(struct dma_fence *fence,
+ ktime_t timestamp)
{
struct dma_fence_cb *cur, *tmp;
struct list_head cb_list;
@@ -364,7 +361,7 @@ int dma_fence_signal_timestamp_locked(struct dma_fence *fence,
if (unlikely(test_and_set_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
&fence->flags)))
- return -EINVAL;
+ return;
/* Stash the cb_list before replacing it with the timestamp */
list_replace(&fence->cb_list, &cb_list);
@@ -377,8 +374,6 @@ int dma_fence_signal_timestamp_locked(struct dma_fence *fence,
INIT_LIST_HEAD(&cur->node);
cur->func(fence, cur);
}
-
- return 0;
}
EXPORT_SYMBOL(dma_fence_signal_timestamp_locked);
@@ -393,23 +388,14 @@ EXPORT_SYMBOL(dma_fence_signal_timestamp_locked);
* can only go from the unsignaled to the signaled state and not back, it will
* only be effective the first time. Set the timestamp provided as the fence
* signal timestamp.
- *
- * Returns 0 on success and a negative error value when @fence has been
- * signalled already.
*/
-int dma_fence_signal_timestamp(struct dma_fence *fence, ktime_t timestamp)
+void dma_fence_signal_timestamp(struct dma_fence *fence, ktime_t timestamp)
{
unsigned long flags;
- int ret;
-
- if (!fence)
- return -EINVAL;
spin_lock_irqsave(fence->lock, flags);
- ret = dma_fence_signal_timestamp_locked(fence, timestamp);
+ dma_fence_signal_timestamp_locked(fence, timestamp);
spin_unlock_irqrestore(fence->lock, flags);
-
- return ret;
}
EXPORT_SYMBOL(dma_fence_signal_timestamp);
@@ -425,13 +411,10 @@ EXPORT_SYMBOL(dma_fence_signal_timestamp);
*
* Unlike dma_fence_signal(), this function must be called with &dma_fence.lock
* held.
- *
- * Returns 0 on success and a negative error value when @fence has been
- * signalled already.
*/
-int dma_fence_signal_locked(struct dma_fence *fence)
+void dma_fence_signal_locked(struct dma_fence *fence)
{
- return dma_fence_signal_timestamp_locked(fence, ktime_get());
+ dma_fence_signal_timestamp_locked(fence, ktime_get());
}
EXPORT_SYMBOL(dma_fence_signal_locked);
@@ -444,28 +427,19 @@ EXPORT_SYMBOL(dma_fence_signal_locked);
* dma_fence_add_callback(). Can be called multiple times, but since a fence
* can only go from the unsignaled to the signaled state and not back, it will
* only be effective the first time.
- *
- * Returns 0 on success and a negative error value when @fence has been
- * signalled already.
*/
-int dma_fence_signal(struct dma_fence *fence)
+void dma_fence_signal(struct dma_fence *fence)
{
unsigned long flags;
- int ret;
bool tmp;
- if (!fence)
- return -EINVAL;
-
tmp = dma_fence_begin_signalling();
spin_lock_irqsave(fence->lock, flags);
- ret = dma_fence_signal_timestamp_locked(fence, ktime_get());
+ dma_fence_signal_timestamp_locked(fence, ktime_get());
spin_unlock_irqrestore(fence->lock, flags);
dma_fence_end_signalling(tmp);
-
- return ret;
}
EXPORT_SYMBOL(dma_fence_signal);
diff --git a/drivers/dma-buf/st-dma-fence.c b/drivers/dma-buf/st-dma-fence.c
index c8a12d7ad71a..e89001d8873f 100644
--- a/drivers/dma-buf/st-dma-fence.c
+++ b/drivers/dma-buf/st-dma-fence.c
@@ -122,21 +122,13 @@ static int test_signaling(void *arg)
goto err_free;
}
- if (dma_fence_signal(f)) {
- pr_err("Fence reported being already signaled\n");
- goto err_free;
- }
-
+ dma_fence_signal(f);
if (!dma_fence_is_signaled(f)) {
pr_err("Fence not reporting signaled\n");
goto err_free;
}
- if (!dma_fence_signal(f)) {
- pr_err("Fence reported not being already signaled\n");
- goto err_free;
- }
-
+ dma_fence_signal(f);
err = 0;
err_free:
dma_fence_put(f);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index d4547d195173..397872779c31 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/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);
- if (!r)
- DMA_FENCE_TRACE(fence, "signaled from irq context\n");
- else
- BUG();
-
+ dma_fence_signal(fence);
dma_fence_put(fence);
pm_runtime_mark_last_busy(adev_to_drm(adev)->dev);
pm_runtime_put_autosuspend(adev_to_drm(adev)->dev);
@@ -673,8 +667,6 @@ 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;
}
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c
index 18f2c2e0dfb3..3f351d222cbb 100644
--- a/drivers/gpu/drm/radeon/radeon_fence.c
+++ b/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);
-
- if (!ret)
- DMA_FENCE_TRACE(&fence->base, "signaled from irq context\n");
- else
- DMA_FENCE_TRACE(&fence->base, "was already signaled\n");
-
+ dma_fence_signal_locked(&fence->base);
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;
-
- ret = dma_fence_signal(&fence->base);
- if (!ret)
- DMA_FENCE_TRACE(&fence->base, "signaled from radeon_fence_signaled\n");
+ dma_fence_signal(&fence->base);
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);
- if (!r_sig)
- DMA_FENCE_TRACE(&fence->base, "signaled from fence_wait\n");
+ dma_fence_signal(&fence->base);
return r;
}
diff --git a/drivers/gpu/drm/scheduler/sched_fence.c b/drivers/gpu/drm/scheduler/sched_fence.c
index 69de2c76731f..3736746c47bd 100644
--- a/drivers/gpu/drm/scheduler/sched_fence.c
+++ b/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);
-
- if (!ret)
- DMA_FENCE_TRACE(&fence->scheduled,
- "signaled from irq context\n");
- else
- DMA_FENCE_TRACE(&fence->scheduled,
- "was already signaled\n");
+ dma_fence_signal(&fence->scheduled);
}
void drm_sched_fence_finished(struct drm_sched_fence *fence)
{
- int ret = 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");
+ dma_fence_signal(&fence->finished);
}
static const char *drm_sched_fence_get_driver_name(struct dma_fence *fence)
diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h
index 6ffb4b2c6371..027db23fd4e3 100644
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -370,11 +370,11 @@ static inline void dma_fence_end_signalling(bool cookie) {}
static inline void __dma_fence_might_wait(void) {}
#endif
-int dma_fence_signal(struct dma_fence *fence);
-int dma_fence_signal_locked(struct dma_fence *fence);
-int dma_fence_signal_timestamp(struct dma_fence *fence, ktime_t timestamp);
-int dma_fence_signal_timestamp_locked(struct dma_fence *fence,
- ktime_t timestamp);
+void dma_fence_signal(struct dma_fence *fence);
+void dma_fence_signal_locked(struct dma_fence *fence);
+void dma_fence_signal_timestamp(struct dma_fence *fence, ktime_t timestamp);
+void dma_fence_signal_timestamp_locked(struct dma_fence *fence,
+ ktime_t timestamp);
signed long dma_fence_default_wait(struct dma_fence *fence,
bool intr, signed long timeout);
int dma_fence_add_callback(struct dma_fence *fence,
@@ -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 */
--
2.25.1
