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Commit edf0ac7c authored by David Herrmann's avatar David Herrmann Committed by Dave Airlie
Browse files

drm: drop DRM_DEBUG_CODE 



DRM_DEBUG_CODE is currently always set, so distributions enable it. The
only reason to keep support in code is if developers wanted to disable
debug support. Sounds unlikely.

All the DRM_DEBUG() printks are still guarded by a drm_debug read. So if
its cacheline is read once, they're discarded pretty fast.. There should
hardly be any performance penalty, it's even guarded by unlikely().

Signed-off-by: default avatarDavid Herrmann <dh.herrmann@gmail.com>
Reviewed-by: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 96993908

drivers/gpu/drm/drm_debugfs.c

+0 −2
Original line number Diff line number Diff line
@@ -49,9 +49,7 @@ static const struct drm_info_list drm_debugfs_list[] = { 
	{"clients", drm_clients_info, 0},

	{"bufs", drm_bufs_info, 0},

	{"gem_names", drm_gem_name_info, DRIVER_GEM},

#if DRM_DEBUG_CODE

	{"vma", drm_vma_info, 0},

#endif

};

#define DRM_DEBUGFS_ENTRIES ARRAY_SIZE(drm_debugfs_list)

drivers/gpu/drm/drm_vm.c

+0 −4
Original line number Diff line number Diff line
@@ -683,8 +683,6 @@ void drm_legacy_vma_flush(struct drm_device *dev) 
	}

}



#if DRM_DEBUG_CODE



int drm_vma_info(struct seq_file *m, void *data)

{

	struct drm_info_node *node = (struct drm_info_node *) m->private;
@@ -738,5 +736,3 @@ int drm_vma_info(struct seq_file *m, void *data) 
	mutex_unlock(&dev->struct_mutex);

	return 0;

}
 


#endif

drivers/gpu/drm/radeon/radeon.h

+12 −5
Original line number Diff line number Diff line
@@ -2776,18 +2776,25 @@ void radeon_atombios_fini(struct radeon_device *rdev); 
/*

 * RING helpers.

 */

#if DRM_DEBUG_CODE == 0



/**

 * radeon_ring_write - write a value to the ring

 *

 * @ring: radeon_ring structure holding ring information

 * @v: dword (dw) value to write

 *

 * Write a value to the requested ring buffer (all asics).

 */

static inline void radeon_ring_write(struct radeon_ring *ring, uint32_t v)

{

	if (ring->count_dw <= 0)

		DRM_ERROR("radeon: writing more dwords to the ring than expected!\n");



	ring->ring[ring->wptr++] = v;

	ring->wptr &= ring->ptr_mask;

	ring->count_dw--;

	ring->ring_free_dw--;

}

#else

/* With debugging this is just too big to inline */

void radeon_ring_write(struct radeon_ring *ring, uint32_t v);

#endif



/*

 * ASICs macro.

drivers/gpu/drm/radeon/radeon_ring.c

+0 −21
Original line number Diff line number Diff line
@@ -44,27 +44,6 @@ 
 */

static int radeon_debugfs_ring_init(struct radeon_device *rdev, struct radeon_ring *ring);



/**

 * radeon_ring_write - write a value to the ring

 *

 * @ring: radeon_ring structure holding ring information

 * @v: dword (dw) value to write

 *

 * Write a value to the requested ring buffer (all asics).

 */

void radeon_ring_write(struct radeon_ring *ring, uint32_t v)

{

#if DRM_DEBUG_CODE

	if (ring->count_dw <= 0) {

		DRM_ERROR("radeon: writing more dwords to the ring than expected!\n");

	}

#endif

	ring->ring[ring->wptr++] = v;

	ring->wptr &= ring->ptr_mask;

	ring->count_dw--;

	ring->ring_free_dw--;

}



/**

 * radeon_ring_supports_scratch_reg - check if the ring supports

 * writing to scratch registers

include/drm/drmP.h

+0 −12
Original line number Diff line number Diff line
@@ -140,9 +140,6 @@ int drm_err(const char *func, const char *format, ...); 
/** \name Begin the DRM... */

/*@{*/



#define DRM_DEBUG_CODE 2	  /**< Include debugging code if > 1, then

				     also include looping detection. */



#define DRM_MAGIC_HASH_ORDER  4  /**< Size of key hash table. Must be power of 2. */



/*@}*/
@@ -188,7 +185,6 @@ int drm_err(const char *func, const char *format, ...); 
 * \param fmt printf() like format string.

 * \param arg arguments

 */

#if DRM_DEBUG_CODE

#define DRM_DEBUG(fmt, args...)						\

	do {								\

		if (unlikely(drm_debug & DRM_UT_CORE))			\
@@ -210,12 +206,6 @@ int drm_err(const char *func, const char *format, ...); 
		if (unlikely(drm_debug & DRM_UT_PRIME))			\

			drm_ut_debug_printk(__func__, fmt, ##args);	\

	} while (0)

#else

#define DRM_DEBUG_DRIVER(fmt, args...) do { } while (0)

#define DRM_DEBUG_KMS(fmt, args...)	do { } while (0)

#define DRM_DEBUG_PRIME(fmt, args...)	do { } while (0)

#define DRM_DEBUG(fmt, arg...)		 do { } while (0)

#endif



/*@}*/
@@ -1348,9 +1338,7 @@ void drm_prime_init_file_private(struct drm_prime_file_private *prime_fpriv); 
void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv);

void drm_prime_remove_buf_handle_locked(struct drm_prime_file_private *prime_fpriv, struct dma_buf *dma_buf);



#if DRM_DEBUG_CODE

extern int drm_vma_info(struct seq_file *m, void *data);

#endif



				/* Scatter Gather Support (drm_scatter.h) */

extern void drm_legacy_sg_cleanup(struct drm_device *dev);