[PATCH v2] dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

[PATCH v2] dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

[Logan Gunthorpe]

Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
in highmem.h, the former can be aliased if any dma-buf user includes
that header.

I'm personally trying to include highmem.h inside scatterlist.h and this
breaks the dma-buf code proper.

Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.

To maintain consistency I've renamed all four of kmap* and kunmap* to be
map* and unmap*. (Even though only kmap_atomic presently conflicts.)

[1] https://www.spinics.net/lists/target-devel/msg15070.html

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
---

Changes since v1:

- Added the missing tegra driver (noticed by kbuild robot)
- Rebased off of drm-intel-next to get the i915 selftest that is new
- Fixed nits Sinclair pointed out.

 drivers/dma-buf/dma-buf.c                      | 16 ++++++++--------
 drivers/gpu/drm/armada/armada_gem.c            |  8 ++++----
 drivers/gpu/drm/drm_prime.c                    |  8 ++++----
 drivers/gpu/drm/i915/i915_gem_dmabuf.c         |  8 ++++----
 drivers/gpu/drm/i915/selftests/mock_dmabuf.c   |  8 ++++----
 drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
 drivers/gpu/drm/tegra/gem.c                    |  8 ++++----
 drivers/gpu/drm/udl/udl_dmabuf.c               |  8 ++++----
 drivers/gpu/drm/vmwgfx/vmwgfx_prime.c          |  8 ++++----
 drivers/media/v4l2-core/videobuf2-dma-contig.c |  4 ++--
 drivers/media/v4l2-core/videobuf2-dma-sg.c     |  4 ++--
 drivers/media/v4l2-core/videobuf2-vmalloc.c    |  4 ++--
 drivers/staging/android/ion/ion.c              |  8 ++++----
 include/linux/dma-buf.h                        | 22 +++++++++++-----------
 14 files changed, 61 insertions(+), 61 deletions(-)

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index f72aaac..512bdbc 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -405,8 +405,8 @@ struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
 			  || !exp_info->ops->map_dma_buf
 			  || !exp_info->ops->unmap_dma_buf
 			  || !exp_info->ops->release
-			  || !exp_info->ops->kmap_atomic
-			  || !exp_info->ops->kmap
+			  || !exp_info->ops->map_atomic
+			  || !exp_info->ops->map
 			  || !exp_info->ops->mmap)) {
 		return ERR_PTR(-EINVAL);
 	}
@@ -872,7 +872,7 @@ void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
 {
 	WARN_ON(!dmabuf);

-	return dmabuf->ops->kmap_atomic(dmabuf, page_num);
+	return dmabuf->ops->map_atomic(dmabuf, page_num);
 }
 EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);

@@ -889,8 +889,8 @@ void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
 {
 	WARN_ON(!dmabuf);

-	if (dmabuf->ops->kunmap_atomic)
-		dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
+	if (dmabuf->ops->unmap_atomic)
+		dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
 }
 EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);

@@ -907,7 +907,7 @@ void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
 {
 	WARN_ON(!dmabuf);

-	return dmabuf->ops->kmap(dmabuf, page_num);
+	return dmabuf->ops->map(dmabuf, page_num);
 }
 EXPORT_SYMBOL_GPL(dma_buf_kmap);

@@ -924,8 +924,8 @@ void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
 {
 	WARN_ON(!dmabuf);

-	if (dmabuf->ops->kunmap)
-		dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
+	if (dmabuf->ops->unmap)
+		dmabuf->ops->unmap(dmabuf, page_num, vaddr);
 }
 EXPORT_SYMBOL_GPL(dma_buf_kunmap);

diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
index 1597458..d6c2a5d 100644
--- a/drivers/gpu/drm/armada/armada_gem.c
+++ b/drivers/gpu/drm/armada/armada_gem.c
@@ -529,10 +529,10 @@ static const struct dma_buf_ops armada_gem_prime_dmabuf_ops = {
 	.map_dma_buf	= armada_gem_prime_map_dma_buf,
 	.unmap_dma_buf	= armada_gem_prime_unmap_dma_buf,
 	.release	= drm_gem_dmabuf_release,
-	.kmap_atomic	= armada_gem_dmabuf_no_kmap,
-	.kunmap_atomic	= armada_gem_dmabuf_no_kunmap,
-	.kmap		= armada_gem_dmabuf_no_kmap,
-	.kunmap		= armada_gem_dmabuf_no_kunmap,
+	.map_atomic	= armada_gem_dmabuf_no_kmap,
+	.unmap_atomic	= armada_gem_dmabuf_no_kunmap,
+	.map		= armada_gem_dmabuf_no_kmap,
+	.unmap		= armada_gem_dmabuf_no_kunmap,
 	.mmap		= armada_gem_dmabuf_mmap,
 };

diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 9fb65b7..954eb84 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -403,10 +403,10 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
 	.map_dma_buf = drm_gem_map_dma_buf,
 	.unmap_dma_buf = drm_gem_unmap_dma_buf,
 	.release = drm_gem_dmabuf_release,
-	.kmap = drm_gem_dmabuf_kmap,
-	.kmap_atomic = drm_gem_dmabuf_kmap_atomic,
-	.kunmap = drm_gem_dmabuf_kunmap,
-	.kunmap_atomic = drm_gem_dmabuf_kunmap_atomic,
+	.map = drm_gem_dmabuf_kmap,
+	.map_atomic = drm_gem_dmabuf_kmap_atomic,
+	.unmap = drm_gem_dmabuf_kunmap,
+	.unmap_atomic = drm_gem_dmabuf_kunmap_atomic,
 	.mmap = drm_gem_dmabuf_mmap,
 	.vmap = drm_gem_dmabuf_vmap,
 	.vunmap = drm_gem_dmabuf_vunmap,
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
index 11898cd..f225bf6 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -200,10 +200,10 @@ static const struct dma_buf_ops i915_dmabuf_ops =  {
 	.map_dma_buf = i915_gem_map_dma_buf,
 	.unmap_dma_buf = i915_gem_unmap_dma_buf,
 	.release = drm_gem_dmabuf_release,
-	.kmap = i915_gem_dmabuf_kmap,
-	.kmap_atomic = i915_gem_dmabuf_kmap_atomic,
-	.kunmap = i915_gem_dmabuf_kunmap,
-	.kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
+	.map = i915_gem_dmabuf_kmap,
+	.map_atomic = i915_gem_dmabuf_kmap_atomic,
+	.unmap = i915_gem_dmabuf_kunmap,
+	.unmap_atomic = i915_gem_dmabuf_kunmap_atomic,
 	.mmap = i915_gem_dmabuf_mmap,
 	.vmap = i915_gem_dmabuf_vmap,
 	.vunmap = i915_gem_dmabuf_vunmap,
diff --git a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
index 99da8f4..302f7d1 100644
--- a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
+++ b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
@@ -129,10 +129,10 @@ static const struct dma_buf_ops mock_dmabuf_ops =  {
 	.map_dma_buf = mock_map_dma_buf,
 	.unmap_dma_buf = mock_unmap_dma_buf,
 	.release = mock_dmabuf_release,
-	.kmap = mock_dmabuf_kmap,
-	.kmap_atomic = mock_dmabuf_kmap_atomic,
-	.kunmap = mock_dmabuf_kunmap,
-	.kunmap_atomic = mock_dmabuf_kunmap_atomic,
+	.map = mock_dmabuf_kmap,
+	.map_atomic = mock_dmabuf_kmap_atomic,
+	.unmap = mock_dmabuf_kunmap,
+	.unmap_atomic = mock_dmabuf_kunmap_atomic,
 	.mmap = mock_dmabuf_mmap,
 	.vmap = mock_dmabuf_vmap,
 	.vunmap = mock_dmabuf_vunmap,
diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
index ee5883f..0dbe030 100644
--- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
+++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
@@ -160,10 +160,10 @@ static struct dma_buf_ops omap_dmabuf_ops = {
 	.release = omap_gem_dmabuf_release,
 	.begin_cpu_access = omap_gem_dmabuf_begin_cpu_access,
 	.end_cpu_access = omap_gem_dmabuf_end_cpu_access,
-	.kmap_atomic = omap_gem_dmabuf_kmap_atomic,
-	.kunmap_atomic = omap_gem_dmabuf_kunmap_atomic,
-	.kmap = omap_gem_dmabuf_kmap,
-	.kunmap = omap_gem_dmabuf_kunmap,
+	.map_atomic = omap_gem_dmabuf_kmap_atomic,
+	.unmap_atomic = omap_gem_dmabuf_kunmap_atomic,
+	.map = omap_gem_dmabuf_kmap,
+	.unmap = omap_gem_dmabuf_kunmap,
 	.mmap = omap_gem_dmabuf_mmap,
 };

diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index 17e62ec..8672f5d 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -619,10 +619,10 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = {
 	.map_dma_buf = tegra_gem_prime_map_dma_buf,
 	.unmap_dma_buf = tegra_gem_prime_unmap_dma_buf,
 	.release = tegra_gem_prime_release,
-	.kmap_atomic = tegra_gem_prime_kmap_atomic,
-	.kunmap_atomic = tegra_gem_prime_kunmap_atomic,
-	.kmap = tegra_gem_prime_kmap,
-	.kunmap = tegra_gem_prime_kunmap,
+	.map_atomic = tegra_gem_prime_kmap_atomic,
+	.unmap_atomic = tegra_gem_prime_kunmap_atomic,
+	.map = tegra_gem_prime_kmap,
+	.unmap = tegra_gem_prime_kunmap,
 	.mmap = tegra_gem_prime_mmap,
 	.vmap = tegra_gem_prime_vmap,
 	.vunmap = tegra_gem_prime_vunmap,
diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
index ac90ffd..ed0e636 100644
--- a/drivers/gpu/drm/udl/udl_dmabuf.c
+++ b/drivers/gpu/drm/udl/udl_dmabuf.c
@@ -191,10 +191,10 @@ static struct dma_buf_ops udl_dmabuf_ops = {
 	.detach			= udl_detach_dma_buf,
 	.map_dma_buf		= udl_map_dma_buf,
 	.unmap_dma_buf		= udl_unmap_dma_buf,
-	.kmap			= udl_dmabuf_kmap,
-	.kmap_atomic		= udl_dmabuf_kmap_atomic,
-	.kunmap			= udl_dmabuf_kunmap,
-	.kunmap_atomic		= udl_dmabuf_kunmap_atomic,
+	.map			= udl_dmabuf_kmap,
+	.map_atomic		= udl_dmabuf_kmap_atomic,
+	.unmap			= udl_dmabuf_kunmap,
+	.unmap_atomic		= udl_dmabuf_kunmap_atomic,
 	.mmap			= udl_dmabuf_mmap,
 	.release		= drm_gem_dmabuf_release,
 };
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
index 31fe32d..0d42a46 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
@@ -108,10 +108,10 @@ const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
 	.map_dma_buf = vmw_prime_map_dma_buf,
 	.unmap_dma_buf = vmw_prime_unmap_dma_buf,
 	.release = NULL,
-	.kmap = vmw_prime_dmabuf_kmap,
-	.kmap_atomic = vmw_prime_dmabuf_kmap_atomic,
-	.kunmap = vmw_prime_dmabuf_kunmap,
-	.kunmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
+	.map = vmw_prime_dmabuf_kmap,
+	.map_atomic = vmw_prime_dmabuf_kmap_atomic,
+	.unmap = vmw_prime_dmabuf_kunmap,
+	.unmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
 	.mmap = vmw_prime_dmabuf_mmap,
 	.vmap = vmw_prime_dmabuf_vmap,
 	.vunmap = vmw_prime_dmabuf_vunmap,
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
index fb6a177..2db0413 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
@@ -356,8 +356,8 @@ static struct dma_buf_ops vb2_dc_dmabuf_ops = {
 	.detach = vb2_dc_dmabuf_ops_detach,
 	.map_dma_buf = vb2_dc_dmabuf_ops_map,
 	.unmap_dma_buf = vb2_dc_dmabuf_ops_unmap,
-	.kmap = vb2_dc_dmabuf_ops_kmap,
-	.kmap_atomic = vb2_dc_dmabuf_ops_kmap,
+	.map = vb2_dc_dmabuf_ops_kmap,
+	.map_atomic = vb2_dc_dmabuf_ops_kmap,
 	.vmap = vb2_dc_dmabuf_ops_vmap,
 	.mmap = vb2_dc_dmabuf_ops_mmap,
 	.release = vb2_dc_dmabuf_ops_release,
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
index ecff8f4..6fd1343 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
@@ -504,8 +504,8 @@ static struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
 	.detach = vb2_dma_sg_dmabuf_ops_detach,
 	.map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
 	.unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
-	.kmap = vb2_dma_sg_dmabuf_ops_kmap,
-	.kmap_atomic = vb2_dma_sg_dmabuf_ops_kmap,
+	.map = vb2_dma_sg_dmabuf_ops_kmap,
+	.map_atomic = vb2_dma_sg_dmabuf_ops_kmap,
 	.vmap = vb2_dma_sg_dmabuf_ops_vmap,
 	.mmap = vb2_dma_sg_dmabuf_ops_mmap,
 	.release = vb2_dma_sg_dmabuf_ops_release,
diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
index 3f77814..27d1db3 100644
--- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
+++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
@@ -342,8 +342,8 @@ static struct dma_buf_ops vb2_vmalloc_dmabuf_ops = {
 	.detach = vb2_vmalloc_dmabuf_ops_detach,
 	.map_dma_buf = vb2_vmalloc_dmabuf_ops_map,
 	.unmap_dma_buf = vb2_vmalloc_dmabuf_ops_unmap,
-	.kmap = vb2_vmalloc_dmabuf_ops_kmap,
-	.kmap_atomic = vb2_vmalloc_dmabuf_ops_kmap,
+	.map = vb2_vmalloc_dmabuf_ops_kmap,
+	.map_atomic = vb2_vmalloc_dmabuf_ops_kmap,
 	.vmap = vb2_vmalloc_dmabuf_ops_vmap,
 	.mmap = vb2_vmalloc_dmabuf_ops_mmap,
 	.release = vb2_vmalloc_dmabuf_ops_release,
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index f45115f..95a7f16 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -1020,10 +1020,10 @@ static const struct dma_buf_ops dma_buf_ops = {
 	.release = ion_dma_buf_release,
 	.begin_cpu_access = ion_dma_buf_begin_cpu_access,
 	.end_cpu_access = ion_dma_buf_end_cpu_access,
-	.kmap_atomic = ion_dma_buf_kmap,
-	.kunmap_atomic = ion_dma_buf_kunmap,
-	.kmap = ion_dma_buf_kmap,
-	.kunmap = ion_dma_buf_kunmap,
+	.map_atomic = ion_dma_buf_kmap,
+	.unmap_atomic = ion_dma_buf_kunmap,
+	.map = ion_dma_buf_kmap,
+	.unmap = ion_dma_buf_kunmap,
 };

 struct dma_buf *ion_share_dma_buf(struct ion_client *client,
diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
index bfb3704..79f27d6 100644
--- a/include/linux/dma-buf.h
+++ b/include/linux/dma-buf.h
@@ -39,13 +39,13 @@ struct dma_buf_attachment;

 /**
  * struct dma_buf_ops - operations possible on struct dma_buf
- * @kmap_atomic: maps a page from the buffer into kernel address
- * 		 space, users may not block until the subsequent unmap call.
- * 		 This callback must not sleep.
- * @kunmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
- * 		   This Callback must not sleep.
- * @kmap: maps a page from the buffer into kernel address space.
- * @kunmap: [optional] unmaps a page from the buffer.
+ * @map_atomic: maps a page from the buffer into kernel address
+ *		space, users may not block until the subsequent unmap call.
+ *		This callback must not sleep.
+ * @unmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
+ *		  This Callback must not sleep.
+ * @map: maps a page from the buffer into kernel address space.
+ * @unmap: [optional] unmaps a page from the buffer.
  * @vmap: [optional] creates a virtual mapping for the buffer into kernel
  *	  address space. Same restrictions as for vmap and friends apply.
  * @vunmap: [optional] unmaps a vmap from the buffer
@@ -206,10 +206,10 @@ struct dma_buf_ops {
 	 * to be restarted.
 	 */
 	int (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
-	void *(*kmap_atomic)(struct dma_buf *, unsigned long);
-	void (*kunmap_atomic)(struct dma_buf *, unsigned long, void *);
-	void *(*kmap)(struct dma_buf *, unsigned long);
-	void (*kunmap)(struct dma_buf *, unsigned long, void *);
+	void *(*map_atomic)(struct dma_buf *, unsigned long);
+	void (*unmap_atomic)(struct dma_buf *, unsigned long, void *);
+	void *(*map)(struct dma_buf *, unsigned long);
+	void (*unmap)(struct dma_buf *, unsigned long, void *);

 	/**
 	 * @mmap:
--
2.1.4

Re: [PATCH v2] dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

[Laura Abbott]

On 04/19/2017 12:36 PM, Logan Gunthorpe wrote:
> Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
> in highmem.h, the former can be aliased if any dma-buf user includes
> that header.
> 
> I'm personally trying to include highmem.h inside scatterlist.h and this
> breaks the dma-buf code proper.
> 
> Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.
> 
> To maintain consistency I've renamed all four of kmap* and kunmap* to be
> map* and unmap*. (Even though only kmap_atomic presently conflicts.)
> 
> [1] https://www.spinics.net/lists/target-devel/msg15070.html
> 
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
> ---
> 
> Changes since v1:
> 
> - Added the missing tegra driver (noticed by kbuild robot)
> - Rebased off of drm-intel-next to get the i915 selftest that is new
> - Fixed nits Sinclair pointed out.
> 
>   drivers/dma-buf/dma-buf.c                      | 16 ++++++++--------
>   drivers/gpu/drm/armada/armada_gem.c            |  8 ++++----
>   drivers/gpu/drm/drm_prime.c                    |  8 ++++----
>   drivers/gpu/drm/i915/i915_gem_dmabuf.c         |  8 ++++----
>   drivers/gpu/drm/i915/selftests/mock_dmabuf.c   |  8 ++++----
>   drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
>   drivers/gpu/drm/tegra/gem.c                    |  8 ++++----
>   drivers/gpu/drm/udl/udl_dmabuf.c               |  8 ++++----
>   drivers/gpu/drm/vmwgfx/vmwgfx_prime.c          |  8 ++++----
>   drivers/media/v4l2-core/videobuf2-dma-contig.c |  4 ++--
>   drivers/media/v4l2-core/videobuf2-dma-sg.c     |  4 ++--
>   drivers/media/v4l2-core/videobuf2-vmalloc.c    |  4 ++--
>   drivers/staging/android/ion/ion.c              |  8 ++++----
>   include/linux/dma-buf.h                        | 22 +++++++++++-----------
>   14 files changed, 61 insertions(+), 61 deletions(-)
> 

For Ion,

Acked-by: Laura Abbott <labbott@redhat.com>

I did some major Ion refactoring but I don't think this
will conflict.

Thanks,
Laura

Re: [Intel-gfx] [PATCH v2] dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

[Daniel Vetter]

On Wed, Apr 19, 2017 at 01:36:10PM -0600, Logan Gunthorpe wrote:
> Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
> in highmem.h, the former can be aliased if any dma-buf user includes
> that header.
> 
> I'm personally trying to include highmem.h inside scatterlist.h and this
> breaks the dma-buf code proper.
> 
> Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.
> 
> To maintain consistency I've renamed all four of kmap* and kunmap* to be
> map* and unmap*. (Even though only kmap_atomic presently conflicts.)
> 
> [1] https://www.spinics.net/lists/target-devel/msg15070.html
> 
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
> Reviewed-by: Sinclair Yeh <syeh@vmware.com>

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>

Probably simplest if we pull this in through the drm-misc tree for 4.12.
Can we have an ack for the v4l side for that pls?

Thanks, Daniel

> ---
> 
> Changes since v1:
> 
> - Added the missing tegra driver (noticed by kbuild robot)
> - Rebased off of drm-intel-next to get the i915 selftest that is new
> - Fixed nits Sinclair pointed out.
> 
>  drivers/dma-buf/dma-buf.c                      | 16 ++++++++--------
>  drivers/gpu/drm/armada/armada_gem.c            |  8 ++++----
>  drivers/gpu/drm/drm_prime.c                    |  8 ++++----
>  drivers/gpu/drm/i915/i915_gem_dmabuf.c         |  8 ++++----
>  drivers/gpu/drm/i915/selftests/mock_dmabuf.c   |  8 ++++----
>  drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
>  drivers/gpu/drm/tegra/gem.c                    |  8 ++++----
>  drivers/gpu/drm/udl/udl_dmabuf.c               |  8 ++++----
>  drivers/gpu/drm/vmwgfx/vmwgfx_prime.c          |  8 ++++----
>  drivers/media/v4l2-core/videobuf2-dma-contig.c |  4 ++--
>  drivers/media/v4l2-core/videobuf2-dma-sg.c     |  4 ++--
>  drivers/media/v4l2-core/videobuf2-vmalloc.c    |  4 ++--
>  drivers/staging/android/ion/ion.c              |  8 ++++----
>  include/linux/dma-buf.h                        | 22 +++++++++++-----------
>  14 files changed, 61 insertions(+), 61 deletions(-)
> 
> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
> index f72aaac..512bdbc 100644
> --- a/drivers/dma-buf/dma-buf.c
> +++ b/drivers/dma-buf/dma-buf.c
> @@ -405,8 +405,8 @@ struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
>  			  || !exp_info->ops->map_dma_buf
>  			  || !exp_info->ops->unmap_dma_buf
>  			  || !exp_info->ops->release
> -			  || !exp_info->ops->kmap_atomic
> -			  || !exp_info->ops->kmap
> +			  || !exp_info->ops->map_atomic
> +			  || !exp_info->ops->map
>  			  || !exp_info->ops->mmap)) {
>  		return ERR_PTR(-EINVAL);
>  	}
> @@ -872,7 +872,7 @@ void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
>  {
>  	WARN_ON(!dmabuf);
> 
> -	return dmabuf->ops->kmap_atomic(dmabuf, page_num);
> +	return dmabuf->ops->map_atomic(dmabuf, page_num);
>  }
>  EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
> 
> @@ -889,8 +889,8 @@ void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
>  {
>  	WARN_ON(!dmabuf);
> 
> -	if (dmabuf->ops->kunmap_atomic)
> -		dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
> +	if (dmabuf->ops->unmap_atomic)
> +		dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
>  }
>  EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
> 
> @@ -907,7 +907,7 @@ void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
>  {
>  	WARN_ON(!dmabuf);
> 
> -	return dmabuf->ops->kmap(dmabuf, page_num);
> +	return dmabuf->ops->map(dmabuf, page_num);
>  }
>  EXPORT_SYMBOL_GPL(dma_buf_kmap);
> 
> @@ -924,8 +924,8 @@ void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
>  {
>  	WARN_ON(!dmabuf);
> 
> -	if (dmabuf->ops->kunmap)
> -		dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
> +	if (dmabuf->ops->unmap)
> +		dmabuf->ops->unmap(dmabuf, page_num, vaddr);
>  }
>  EXPORT_SYMBOL_GPL(dma_buf_kunmap);
> 
> diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
> index 1597458..d6c2a5d 100644
> --- a/drivers/gpu/drm/armada/armada_gem.c
> +++ b/drivers/gpu/drm/armada/armada_gem.c
> @@ -529,10 +529,10 @@ static const struct dma_buf_ops armada_gem_prime_dmabuf_ops = {
>  	.map_dma_buf	= armada_gem_prime_map_dma_buf,
>  	.unmap_dma_buf	= armada_gem_prime_unmap_dma_buf,
>  	.release	= drm_gem_dmabuf_release,
> -	.kmap_atomic	= armada_gem_dmabuf_no_kmap,
> -	.kunmap_atomic	= armada_gem_dmabuf_no_kunmap,
> -	.kmap		= armada_gem_dmabuf_no_kmap,
> -	.kunmap		= armada_gem_dmabuf_no_kunmap,
> +	.map_atomic	= armada_gem_dmabuf_no_kmap,
> +	.unmap_atomic	= armada_gem_dmabuf_no_kunmap,
> +	.map		= armada_gem_dmabuf_no_kmap,
> +	.unmap		= armada_gem_dmabuf_no_kunmap,
>  	.mmap		= armada_gem_dmabuf_mmap,
>  };
> 
> diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
> index 9fb65b7..954eb84 100644
> --- a/drivers/gpu/drm/drm_prime.c
> +++ b/drivers/gpu/drm/drm_prime.c
> @@ -403,10 +403,10 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
>  	.map_dma_buf = drm_gem_map_dma_buf,
>  	.unmap_dma_buf = drm_gem_unmap_dma_buf,
>  	.release = drm_gem_dmabuf_release,
> -	.kmap = drm_gem_dmabuf_kmap,
> -	.kmap_atomic = drm_gem_dmabuf_kmap_atomic,
> -	.kunmap = drm_gem_dmabuf_kunmap,
> -	.kunmap_atomic = drm_gem_dmabuf_kunmap_atomic,
> +	.map = drm_gem_dmabuf_kmap,
> +	.map_atomic = drm_gem_dmabuf_kmap_atomic,
> +	.unmap = drm_gem_dmabuf_kunmap,
> +	.unmap_atomic = drm_gem_dmabuf_kunmap_atomic,
>  	.mmap = drm_gem_dmabuf_mmap,
>  	.vmap = drm_gem_dmabuf_vmap,
>  	.vunmap = drm_gem_dmabuf_vunmap,
> diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
> index 11898cd..f225bf6 100644
> --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
> +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
> @@ -200,10 +200,10 @@ static const struct dma_buf_ops i915_dmabuf_ops =  {
>  	.map_dma_buf = i915_gem_map_dma_buf,
>  	.unmap_dma_buf = i915_gem_unmap_dma_buf,
>  	.release = drm_gem_dmabuf_release,
> -	.kmap = i915_gem_dmabuf_kmap,
> -	.kmap_atomic = i915_gem_dmabuf_kmap_atomic,
> -	.kunmap = i915_gem_dmabuf_kunmap,
> -	.kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
> +	.map = i915_gem_dmabuf_kmap,
> +	.map_atomic = i915_gem_dmabuf_kmap_atomic,
> +	.unmap = i915_gem_dmabuf_kunmap,
> +	.unmap_atomic = i915_gem_dmabuf_kunmap_atomic,
>  	.mmap = i915_gem_dmabuf_mmap,
>  	.vmap = i915_gem_dmabuf_vmap,
>  	.vunmap = i915_gem_dmabuf_vunmap,
> diff --git a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
> index 99da8f4..302f7d1 100644
> --- a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
> +++ b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
> @@ -129,10 +129,10 @@ static const struct dma_buf_ops mock_dmabuf_ops =  {
>  	.map_dma_buf = mock_map_dma_buf,
>  	.unmap_dma_buf = mock_unmap_dma_buf,
>  	.release = mock_dmabuf_release,
> -	.kmap = mock_dmabuf_kmap,
> -	.kmap_atomic = mock_dmabuf_kmap_atomic,
> -	.kunmap = mock_dmabuf_kunmap,
> -	.kunmap_atomic = mock_dmabuf_kunmap_atomic,
> +	.map = mock_dmabuf_kmap,
> +	.map_atomic = mock_dmabuf_kmap_atomic,
> +	.unmap = mock_dmabuf_kunmap,
> +	.unmap_atomic = mock_dmabuf_kunmap_atomic,
>  	.mmap = mock_dmabuf_mmap,
>  	.vmap = mock_dmabuf_vmap,
>  	.vunmap = mock_dmabuf_vunmap,
> diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
> index ee5883f..0dbe030 100644
> --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
> +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
> @@ -160,10 +160,10 @@ static struct dma_buf_ops omap_dmabuf_ops = {
>  	.release = omap_gem_dmabuf_release,
>  	.begin_cpu_access = omap_gem_dmabuf_begin_cpu_access,
>  	.end_cpu_access = omap_gem_dmabuf_end_cpu_access,
> -	.kmap_atomic = omap_gem_dmabuf_kmap_atomic,
> -	.kunmap_atomic = omap_gem_dmabuf_kunmap_atomic,
> -	.kmap = omap_gem_dmabuf_kmap,
> -	.kunmap = omap_gem_dmabuf_kunmap,
> +	.map_atomic = omap_gem_dmabuf_kmap_atomic,
> +	.unmap_atomic = omap_gem_dmabuf_kunmap_atomic,
> +	.map = omap_gem_dmabuf_kmap,
> +	.unmap = omap_gem_dmabuf_kunmap,
>  	.mmap = omap_gem_dmabuf_mmap,
>  };
> 
> diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
> index 17e62ec..8672f5d 100644
> --- a/drivers/gpu/drm/tegra/gem.c
> +++ b/drivers/gpu/drm/tegra/gem.c
> @@ -619,10 +619,10 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = {
>  	.map_dma_buf = tegra_gem_prime_map_dma_buf,
>  	.unmap_dma_buf = tegra_gem_prime_unmap_dma_buf,
>  	.release = tegra_gem_prime_release,
> -	.kmap_atomic = tegra_gem_prime_kmap_atomic,
> -	.kunmap_atomic = tegra_gem_prime_kunmap_atomic,
> -	.kmap = tegra_gem_prime_kmap,
> -	.kunmap = tegra_gem_prime_kunmap,
> +	.map_atomic = tegra_gem_prime_kmap_atomic,
> +	.unmap_atomic = tegra_gem_prime_kunmap_atomic,
> +	.map = tegra_gem_prime_kmap,
> +	.unmap = tegra_gem_prime_kunmap,
>  	.mmap = tegra_gem_prime_mmap,
>  	.vmap = tegra_gem_prime_vmap,
>  	.vunmap = tegra_gem_prime_vunmap,
> diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
> index ac90ffd..ed0e636 100644
> --- a/drivers/gpu/drm/udl/udl_dmabuf.c
> +++ b/drivers/gpu/drm/udl/udl_dmabuf.c
> @@ -191,10 +191,10 @@ static struct dma_buf_ops udl_dmabuf_ops = {
>  	.detach			= udl_detach_dma_buf,
>  	.map_dma_buf		= udl_map_dma_buf,
>  	.unmap_dma_buf		= udl_unmap_dma_buf,
> -	.kmap			= udl_dmabuf_kmap,
> -	.kmap_atomic		= udl_dmabuf_kmap_atomic,
> -	.kunmap			= udl_dmabuf_kunmap,
> -	.kunmap_atomic		= udl_dmabuf_kunmap_atomic,
> +	.map			= udl_dmabuf_kmap,
> +	.map_atomic		= udl_dmabuf_kmap_atomic,
> +	.unmap			= udl_dmabuf_kunmap,
> +	.unmap_atomic		= udl_dmabuf_kunmap_atomic,
>  	.mmap			= udl_dmabuf_mmap,
>  	.release		= drm_gem_dmabuf_release,
>  };
> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
> index 31fe32d..0d42a46 100644
> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
> @@ -108,10 +108,10 @@ const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
>  	.map_dma_buf = vmw_prime_map_dma_buf,
>  	.unmap_dma_buf = vmw_prime_unmap_dma_buf,
>  	.release = NULL,
> -	.kmap = vmw_prime_dmabuf_kmap,
> -	.kmap_atomic = vmw_prime_dmabuf_kmap_atomic,
> -	.kunmap = vmw_prime_dmabuf_kunmap,
> -	.kunmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
> +	.map = vmw_prime_dmabuf_kmap,
> +	.map_atomic = vmw_prime_dmabuf_kmap_atomic,
> +	.unmap = vmw_prime_dmabuf_kunmap,
> +	.unmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
>  	.mmap = vmw_prime_dmabuf_mmap,
>  	.vmap = vmw_prime_dmabuf_vmap,
>  	.vunmap = vmw_prime_dmabuf_vunmap,
> diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
> index fb6a177..2db0413 100644
> --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
> +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
> @@ -356,8 +356,8 @@ static struct dma_buf_ops vb2_dc_dmabuf_ops = {
>  	.detach = vb2_dc_dmabuf_ops_detach,
>  	.map_dma_buf = vb2_dc_dmabuf_ops_map,
>  	.unmap_dma_buf = vb2_dc_dmabuf_ops_unmap,
> -	.kmap = vb2_dc_dmabuf_ops_kmap,
> -	.kmap_atomic = vb2_dc_dmabuf_ops_kmap,
> +	.map = vb2_dc_dmabuf_ops_kmap,
> +	.map_atomic = vb2_dc_dmabuf_ops_kmap,
>  	.vmap = vb2_dc_dmabuf_ops_vmap,
>  	.mmap = vb2_dc_dmabuf_ops_mmap,
>  	.release = vb2_dc_dmabuf_ops_release,
> diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
> index ecff8f4..6fd1343 100644
> --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
> +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
> @@ -504,8 +504,8 @@ static struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
>  	.detach = vb2_dma_sg_dmabuf_ops_detach,
>  	.map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
>  	.unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
> -	.kmap = vb2_dma_sg_dmabuf_ops_kmap,
> -	.kmap_atomic = vb2_dma_sg_dmabuf_ops_kmap,
> +	.map = vb2_dma_sg_dmabuf_ops_kmap,
> +	.map_atomic = vb2_dma_sg_dmabuf_ops_kmap,
>  	.vmap = vb2_dma_sg_dmabuf_ops_vmap,
>  	.mmap = vb2_dma_sg_dmabuf_ops_mmap,
>  	.release = vb2_dma_sg_dmabuf_ops_release,
> diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
> index 3f77814..27d1db3 100644
> --- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
> +++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
> @@ -342,8 +342,8 @@ static struct dma_buf_ops vb2_vmalloc_dmabuf_ops = {
>  	.detach = vb2_vmalloc_dmabuf_ops_detach,
>  	.map_dma_buf = vb2_vmalloc_dmabuf_ops_map,
>  	.unmap_dma_buf = vb2_vmalloc_dmabuf_ops_unmap,
> -	.kmap = vb2_vmalloc_dmabuf_ops_kmap,
> -	.kmap_atomic = vb2_vmalloc_dmabuf_ops_kmap,
> +	.map = vb2_vmalloc_dmabuf_ops_kmap,
> +	.map_atomic = vb2_vmalloc_dmabuf_ops_kmap,
>  	.vmap = vb2_vmalloc_dmabuf_ops_vmap,
>  	.mmap = vb2_vmalloc_dmabuf_ops_mmap,
>  	.release = vb2_vmalloc_dmabuf_ops_release,
> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
> index f45115f..95a7f16 100644
> --- a/drivers/staging/android/ion/ion.c
> +++ b/drivers/staging/android/ion/ion.c
> @@ -1020,10 +1020,10 @@ static const struct dma_buf_ops dma_buf_ops = {
>  	.release = ion_dma_buf_release,
>  	.begin_cpu_access = ion_dma_buf_begin_cpu_access,
>  	.end_cpu_access = ion_dma_buf_end_cpu_access,
> -	.kmap_atomic = ion_dma_buf_kmap,
> -	.kunmap_atomic = ion_dma_buf_kunmap,
> -	.kmap = ion_dma_buf_kmap,
> -	.kunmap = ion_dma_buf_kunmap,
> +	.map_atomic = ion_dma_buf_kmap,
> +	.unmap_atomic = ion_dma_buf_kunmap,
> +	.map = ion_dma_buf_kmap,
> +	.unmap = ion_dma_buf_kunmap,
>  };
> 
>  struct dma_buf *ion_share_dma_buf(struct ion_client *client,
> diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
> index bfb3704..79f27d6 100644
> --- a/include/linux/dma-buf.h
> +++ b/include/linux/dma-buf.h
> @@ -39,13 +39,13 @@ struct dma_buf_attachment;
> 
>  /**
>   * struct dma_buf_ops - operations possible on struct dma_buf
> - * @kmap_atomic: maps a page from the buffer into kernel address
> - * 		 space, users may not block until the subsequent unmap call.
> - * 		 This callback must not sleep.
> - * @kunmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
> - * 		   This Callback must not sleep.
> - * @kmap: maps a page from the buffer into kernel address space.
> - * @kunmap: [optional] unmaps a page from the buffer.
> + * @map_atomic: maps a page from the buffer into kernel address
> + *		space, users may not block until the subsequent unmap call.
> + *		This callback must not sleep.
> + * @unmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
> + *		  This Callback must not sleep.
> + * @map: maps a page from the buffer into kernel address space.
> + * @unmap: [optional] unmaps a page from the buffer.
>   * @vmap: [optional] creates a virtual mapping for the buffer into kernel
>   *	  address space. Same restrictions as for vmap and friends apply.
>   * @vunmap: [optional] unmaps a vmap from the buffer
> @@ -206,10 +206,10 @@ struct dma_buf_ops {
>  	 * to be restarted.
>  	 */
>  	int (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
> -	void *(*kmap_atomic)(struct dma_buf *, unsigned long);
> -	void (*kunmap_atomic)(struct dma_buf *, unsigned long, void *);
> -	void *(*kmap)(struct dma_buf *, unsigned long);
> -	void (*kunmap)(struct dma_buf *, unsigned long, void *);
> +	void *(*map_atomic)(struct dma_buf *, unsigned long);
> +	void (*unmap_atomic)(struct dma_buf *, unsigned long, void *);
> +	void *(*map)(struct dma_buf *, unsigned long);
> +	void (*unmap)(struct dma_buf *, unsigned long, void *);
> 
>  	/**
>  	 * @mmap:
> --
> 2.1.4
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

Re: [Intel-gfx] [PATCH v2] dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

[Sumit Semwal]

Hi Logan,

Thanks for the patch.

On 20 April 2017 at 13:21, Daniel Vetter <daniel@ffwll.ch> wrote:
> On Wed, Apr 19, 2017 at 01:36:10PM -0600, Logan Gunthorpe wrote:
>> Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
>> in highmem.h, the former can be aliased if any dma-buf user includes
>> that header.
>>
>> I'm personally trying to include highmem.h inside scatterlist.h and this
>> breaks the dma-buf code proper.
>>
>> Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.
>>
>> To maintain consistency I've renamed all four of kmap* and kunmap* to be
>> map* and unmap*. (Even though only kmap_atomic presently conflicts.)
>>
>> [1] https://www.spinics.net/lists/target-devel/msg15070.html
>>
>> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
>> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
>
> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
>
> Probably simplest if we pull this in through the drm-misc tree for 4.12.
> Can we have an ack for the v4l side for that pls?
>
> Thanks, Daniel
>
>> ---
>>
>> Changes since v1:
>>
>> - Added the missing tegra driver (noticed by kbuild robot)
>> - Rebased off of drm-intel-next to get the i915 selftest that is new
>> - Fixed nits Sinclair pointed out.
>>
>>  drivers/dma-buf/dma-buf.c                      | 16 ++++++++--------
>>  drivers/gpu/drm/armada/armada_gem.c            |  8 ++++----
>>  drivers/gpu/drm/drm_prime.c                    |  8 ++++----
>>  drivers/gpu/drm/i915/i915_gem_dmabuf.c         |  8 ++++----
>>  drivers/gpu/drm/i915/selftests/mock_dmabuf.c   |  8 ++++----
>>  drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
>>  drivers/gpu/drm/tegra/gem.c                    |  8 ++++----
>>  drivers/gpu/drm/udl/udl_dmabuf.c               |  8 ++++----
>>  drivers/gpu/drm/vmwgfx/vmwgfx_prime.c          |  8 ++++----
>>  drivers/media/v4l2-core/videobuf2-dma-contig.c |  4 ++--
>>  drivers/media/v4l2-core/videobuf2-dma-sg.c     |  4 ++--
>>  drivers/media/v4l2-core/videobuf2-vmalloc.c    |  4 ++--
>>  drivers/staging/android/ion/ion.c              |  8 ++++----
>>  include/linux/dma-buf.h                        | 22 +++++++++++-----------
>>  14 files changed, 61 insertions(+), 61 deletions(-)
>>
>> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
>> index f72aaac..512bdbc 100644
>> --- a/drivers/dma-buf/dma-buf.c
>> +++ b/drivers/dma-buf/dma-buf.c
>> @@ -405,8 +405,8 @@ struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
>>                         || !exp_info->ops->map_dma_buf
>>                         || !exp_info->ops->unmap_dma_buf
>>                         || !exp_info->ops->release
>> -                       || !exp_info->ops->kmap_atomic
>> -                       || !exp_info->ops->kmap
>> +                       || !exp_info->ops->map_atomic
>> +                       || !exp_info->ops->map
>>                         || !exp_info->ops->mmap)) {
>>               return ERR_PTR(-EINVAL);
>>       }
>> @@ -872,7 +872,7 @@ void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
>>  {
>>       WARN_ON(!dmabuf);
>>
>> -     return dmabuf->ops->kmap_atomic(dmabuf, page_num);
>> +     return dmabuf->ops->map_atomic(dmabuf, page_num);
>>  }
>>  EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
>>
>> @@ -889,8 +889,8 @@ void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
>>  {
>>       WARN_ON(!dmabuf);
>>
>> -     if (dmabuf->ops->kunmap_atomic)
>> -             dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
>> +     if (dmabuf->ops->unmap_atomic)
>> +             dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
>>  }
>>  EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
>>
>> @@ -907,7 +907,7 @@ void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
>>  {
>>       WARN_ON(!dmabuf);
>>
>> -     return dmabuf->ops->kmap(dmabuf, page_num);
>> +     return dmabuf->ops->map(dmabuf, page_num);
>>  }
>>  EXPORT_SYMBOL_GPL(dma_buf_kmap);
>>
>> @@ -924,8 +924,8 @@ void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
>>  {
>>       WARN_ON(!dmabuf);
>>
>> -     if (dmabuf->ops->kunmap)
>> -             dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
>> +     if (dmabuf->ops->unmap)
>> +             dmabuf->ops->unmap(dmabuf, page_num, vaddr);
>>  }
>>  EXPORT_SYMBOL_GPL(dma_buf_kunmap);
>>
>> diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
>> index 1597458..d6c2a5d 100644
>> --- a/drivers/gpu/drm/armada/armada_gem.c
>> +++ b/drivers/gpu/drm/armada/armada_gem.c
>> @@ -529,10 +529,10 @@ static const struct dma_buf_ops armada_gem_prime_dmabuf_ops = {
>>       .map_dma_buf    = armada_gem_prime_map_dma_buf,
>>       .unmap_dma_buf  = armada_gem_prime_unmap_dma_buf,
>>       .release        = drm_gem_dmabuf_release,
>> -     .kmap_atomic    = armada_gem_dmabuf_no_kmap,
>> -     .kunmap_atomic  = armada_gem_dmabuf_no_kunmap,
>> -     .kmap           = armada_gem_dmabuf_no_kmap,
>> -     .kunmap         = armada_gem_dmabuf_no_kunmap,
>> +     .map_atomic     = armada_gem_dmabuf_no_kmap,
>> +     .unmap_atomic   = armada_gem_dmabuf_no_kunmap,
>> +     .map            = armada_gem_dmabuf_no_kmap,
>> +     .unmap          = armada_gem_dmabuf_no_kunmap,
>>       .mmap           = armada_gem_dmabuf_mmap,
>>  };
>>
>> diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
>> index 9fb65b7..954eb84 100644
>> --- a/drivers/gpu/drm/drm_prime.c
>> +++ b/drivers/gpu/drm/drm_prime.c
>> @@ -403,10 +403,10 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
>>       .map_dma_buf = drm_gem_map_dma_buf,
>>       .unmap_dma_buf = drm_gem_unmap_dma_buf,
>>       .release = drm_gem_dmabuf_release,
>> -     .kmap = drm_gem_dmabuf_kmap,
>> -     .kmap_atomic = drm_gem_dmabuf_kmap_atomic,
>> -     .kunmap = drm_gem_dmabuf_kunmap,
>> -     .kunmap_atomic = drm_gem_dmabuf_kunmap_atomic,
>> +     .map = drm_gem_dmabuf_kmap,
>> +     .map_atomic = drm_gem_dmabuf_kmap_atomic,
>> +     .unmap = drm_gem_dmabuf_kunmap,
>> +     .unmap_atomic = drm_gem_dmabuf_kunmap_atomic,
>>       .mmap = drm_gem_dmabuf_mmap,
>>       .vmap = drm_gem_dmabuf_vmap,
>>       .vunmap = drm_gem_dmabuf_vunmap,
>> diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>> index 11898cd..f225bf6 100644
>> --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>> +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>> @@ -200,10 +200,10 @@ static const struct dma_buf_ops i915_dmabuf_ops =  {
>>       .map_dma_buf = i915_gem_map_dma_buf,
>>       .unmap_dma_buf = i915_gem_unmap_dma_buf,
>>       .release = drm_gem_dmabuf_release,
>> -     .kmap = i915_gem_dmabuf_kmap,
>> -     .kmap_atomic = i915_gem_dmabuf_kmap_atomic,
>> -     .kunmap = i915_gem_dmabuf_kunmap,
>> -     .kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
>> +     .map = i915_gem_dmabuf_kmap,
>> +     .map_atomic = i915_gem_dmabuf_kmap_atomic,
>> +     .unmap = i915_gem_dmabuf_kunmap,
>> +     .unmap_atomic = i915_gem_dmabuf_kunmap_atomic,
>>       .mmap = i915_gem_dmabuf_mmap,
>>       .vmap = i915_gem_dmabuf_vmap,
>>       .vunmap = i915_gem_dmabuf_vunmap,
>> diff --git a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>> index 99da8f4..302f7d1 100644
>> --- a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>> +++ b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>> @@ -129,10 +129,10 @@ static const struct dma_buf_ops mock_dmabuf_ops =  {
>>       .map_dma_buf = mock_map_dma_buf,
>>       .unmap_dma_buf = mock_unmap_dma_buf,
>>       .release = mock_dmabuf_release,
>> -     .kmap = mock_dmabuf_kmap,
>> -     .kmap_atomic = mock_dmabuf_kmap_atomic,
>> -     .kunmap = mock_dmabuf_kunmap,
>> -     .kunmap_atomic = mock_dmabuf_kunmap_atomic,
>> +     .map = mock_dmabuf_kmap,
>> +     .map_atomic = mock_dmabuf_kmap_atomic,
>> +     .unmap = mock_dmabuf_kunmap,
>> +     .unmap_atomic = mock_dmabuf_kunmap_atomic,
>>       .mmap = mock_dmabuf_mmap,
>>       .vmap = mock_dmabuf_vmap,
>>       .vunmap = mock_dmabuf_vunmap,
>> diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>> index ee5883f..0dbe030 100644
>> --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>> +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>> @@ -160,10 +160,10 @@ static struct dma_buf_ops omap_dmabuf_ops = {
>>       .release = omap_gem_dmabuf_release,
>>       .begin_cpu_access = omap_gem_dmabuf_begin_cpu_access,
>>       .end_cpu_access = omap_gem_dmabuf_end_cpu_access,
>> -     .kmap_atomic = omap_gem_dmabuf_kmap_atomic,
>> -     .kunmap_atomic = omap_gem_dmabuf_kunmap_atomic,
>> -     .kmap = omap_gem_dmabuf_kmap,
>> -     .kunmap = omap_gem_dmabuf_kunmap,
>> +     .map_atomic = omap_gem_dmabuf_kmap_atomic,
>> +     .unmap_atomic = omap_gem_dmabuf_kunmap_atomic,
>> +     .map = omap_gem_dmabuf_kmap,
>> +     .unmap = omap_gem_dmabuf_kunmap,
>>       .mmap = omap_gem_dmabuf_mmap,
>>  };
>>
>> diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
>> index 17e62ec..8672f5d 100644
>> --- a/drivers/gpu/drm/tegra/gem.c
>> +++ b/drivers/gpu/drm/tegra/gem.c
>> @@ -619,10 +619,10 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = {
>>       .map_dma_buf = tegra_gem_prime_map_dma_buf,
>>       .unmap_dma_buf = tegra_gem_prime_unmap_dma_buf,
>>       .release = tegra_gem_prime_release,
>> -     .kmap_atomic = tegra_gem_prime_kmap_atomic,
>> -     .kunmap_atomic = tegra_gem_prime_kunmap_atomic,
>> -     .kmap = tegra_gem_prime_kmap,
>> -     .kunmap = tegra_gem_prime_kunmap,
>> +     .map_atomic = tegra_gem_prime_kmap_atomic,
>> +     .unmap_atomic = tegra_gem_prime_kunmap_atomic,
>> +     .map = tegra_gem_prime_kmap,
>> +     .unmap = tegra_gem_prime_kunmap,
>>       .mmap = tegra_gem_prime_mmap,
>>       .vmap = tegra_gem_prime_vmap,
>>       .vunmap = tegra_gem_prime_vunmap,
>> diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
>> index ac90ffd..ed0e636 100644
>> --- a/drivers/gpu/drm/udl/udl_dmabuf.c
>> +++ b/drivers/gpu/drm/udl/udl_dmabuf.c
>> @@ -191,10 +191,10 @@ static struct dma_buf_ops udl_dmabuf_ops = {
>>       .detach                 = udl_detach_dma_buf,
>>       .map_dma_buf            = udl_map_dma_buf,
>>       .unmap_dma_buf          = udl_unmap_dma_buf,
>> -     .kmap                   = udl_dmabuf_kmap,
>> -     .kmap_atomic            = udl_dmabuf_kmap_atomic,
>> -     .kunmap                 = udl_dmabuf_kunmap,
>> -     .kunmap_atomic          = udl_dmabuf_kunmap_atomic,
>> +     .map                    = udl_dmabuf_kmap,
>> +     .map_atomic             = udl_dmabuf_kmap_atomic,
>> +     .unmap                  = udl_dmabuf_kunmap,
>> +     .unmap_atomic           = udl_dmabuf_kunmap_atomic,
>>       .mmap                   = udl_dmabuf_mmap,
>>       .release                = drm_gem_dmabuf_release,
>>  };
>> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>> index 31fe32d..0d42a46 100644
>> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>> @@ -108,10 +108,10 @@ const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
>>       .map_dma_buf = vmw_prime_map_dma_buf,
>>       .unmap_dma_buf = vmw_prime_unmap_dma_buf,
>>       .release = NULL,
>> -     .kmap = vmw_prime_dmabuf_kmap,
>> -     .kmap_atomic = vmw_prime_dmabuf_kmap_atomic,
>> -     .kunmap = vmw_prime_dmabuf_kunmap,
>> -     .kunmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
>> +     .map = vmw_prime_dmabuf_kmap,
>> +     .map_atomic = vmw_prime_dmabuf_kmap_atomic,
>> +     .unmap = vmw_prime_dmabuf_kunmap,
>> +     .unmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
>>       .mmap = vmw_prime_dmabuf_mmap,
>>       .vmap = vmw_prime_dmabuf_vmap,
>>       .vunmap = vmw_prime_dmabuf_vunmap,
>> diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> index fb6a177..2db0413 100644
>> --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> @@ -356,8 +356,8 @@ static struct dma_buf_ops vb2_dc_dmabuf_ops = {
>>       .detach = vb2_dc_dmabuf_ops_detach,
>>       .map_dma_buf = vb2_dc_dmabuf_ops_map,
>>       .unmap_dma_buf = vb2_dc_dmabuf_ops_unmap,
>> -     .kmap = vb2_dc_dmabuf_ops_kmap,
>> -     .kmap_atomic = vb2_dc_dmabuf_ops_kmap,
>> +     .map = vb2_dc_dmabuf_ops_kmap,
>> +     .map_atomic = vb2_dc_dmabuf_ops_kmap,
>>       .vmap = vb2_dc_dmabuf_ops_vmap,
>>       .mmap = vb2_dc_dmabuf_ops_mmap,
>>       .release = vb2_dc_dmabuf_ops_release,
>> diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
>> index ecff8f4..6fd1343 100644
>> --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
>> +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
>> @@ -504,8 +504,8 @@ static struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
>>       .detach = vb2_dma_sg_dmabuf_ops_detach,
>>       .map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
>>       .unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
>> -     .kmap = vb2_dma_sg_dmabuf_ops_kmap,
>> -     .kmap_atomic = vb2_dma_sg_dmabuf_ops_kmap,
>> +     .map = vb2_dma_sg_dmabuf_ops_kmap,
>> +     .map_atomic = vb2_dma_sg_dmabuf_ops_kmap,
>>       .vmap = vb2_dma_sg_dmabuf_ops_vmap,
>>       .mmap = vb2_dma_sg_dmabuf_ops_mmap,
>>       .release = vb2_dma_sg_dmabuf_ops_release,
>> diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
>> index 3f77814..27d1db3 100644
>> --- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
>> +++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
>> @@ -342,8 +342,8 @@ static struct dma_buf_ops vb2_vmalloc_dmabuf_ops = {
>>       .detach = vb2_vmalloc_dmabuf_ops_detach,
>>       .map_dma_buf = vb2_vmalloc_dmabuf_ops_map,
>>       .unmap_dma_buf = vb2_vmalloc_dmabuf_ops_unmap,
>> -     .kmap = vb2_vmalloc_dmabuf_ops_kmap,
>> -     .kmap_atomic = vb2_vmalloc_dmabuf_ops_kmap,
>> +     .map = vb2_vmalloc_dmabuf_ops_kmap,
>> +     .map_atomic = vb2_vmalloc_dmabuf_ops_kmap,
>>       .vmap = vb2_vmalloc_dmabuf_ops_vmap,
>>       .mmap = vb2_vmalloc_dmabuf_ops_mmap,
>>       .release = vb2_vmalloc_dmabuf_ops_release,
>> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
>> index f45115f..95a7f16 100644
>> --- a/drivers/staging/android/ion/ion.c
>> +++ b/drivers/staging/android/ion/ion.c
>> @@ -1020,10 +1020,10 @@ static const struct dma_buf_ops dma_buf_ops = {
>>       .release = ion_dma_buf_release,
>>       .begin_cpu_access = ion_dma_buf_begin_cpu_access,
>>       .end_cpu_access = ion_dma_buf_end_cpu_access,
>> -     .kmap_atomic = ion_dma_buf_kmap,
>> -     .kunmap_atomic = ion_dma_buf_kunmap,
>> -     .kmap = ion_dma_buf_kmap,
>> -     .kunmap = ion_dma_buf_kunmap,
>> +     .map_atomic = ion_dma_buf_kmap,
>> +     .unmap_atomic = ion_dma_buf_kunmap,
>> +     .map = ion_dma_buf_kmap,
>> +     .unmap = ion_dma_buf_kunmap,
>>  };
>>
>>  struct dma_buf *ion_share_dma_buf(struct ion_client *client,
>> diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
>> index bfb3704..79f27d6 100644
>> --- a/include/linux/dma-buf.h
>> +++ b/include/linux/dma-buf.h
>> @@ -39,13 +39,13 @@ struct dma_buf_attachment;
>>
>>  /**
>>   * struct dma_buf_ops - operations possible on struct dma_buf
>> - * @kmap_atomic: maps a page from the buffer into kernel address
>> - *            space, users may not block until the subsequent unmap call.
>> - *            This callback must not sleep.
>> - * @kunmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
>> - *              This Callback must not sleep.
>> - * @kmap: maps a page from the buffer into kernel address space.
>> - * @kunmap: [optional] unmaps a page from the buffer.
>> + * @map_atomic: maps a page from the buffer into kernel address
>> + *           space, users may not block until the subsequent unmap call.
>> + *           This callback must not sleep.
>> + * @unmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
>> + *             This Callback must not sleep.
>> + * @map: maps a page from the buffer into kernel address space.
>> + * @unmap: [optional] unmaps a page from the buffer.
>>   * @vmap: [optional] creates a virtual mapping for the buffer into kernel
>>   *     address space. Same restrictions as for vmap and friends apply.
>>   * @vunmap: [optional] unmaps a vmap from the buffer
>> @@ -206,10 +206,10 @@ struct dma_buf_ops {
>>        * to be restarted.
>>        */
>>       int (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
>> -     void *(*kmap_atomic)(struct dma_buf *, unsigned long);
>> -     void (*kunmap_atomic)(struct dma_buf *, unsigned long, void *);
>> -     void *(*kmap)(struct dma_buf *, unsigned long);
>> -     void (*kunmap)(struct dma_buf *, unsigned long, void *);
>> +     void *(*map_atomic)(struct dma_buf *, unsigned long);
>> +     void (*unmap_atomic)(struct dma_buf *, unsigned long, void *);
>> +     void *(*map)(struct dma_buf *, unsigned long);
>> +     void (*unmap)(struct dma_buf *, unsigned long, void *);
>>
>>       /**
>>        * @mmap:
>> --
>> 2.1.4
>> _______________________________________________
>> Intel-gfx mailing list
>> Intel-gfx@lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch



-- 
Thanks and regards,

Sumit Semwal
Linaro Mobile Group - Kernel Team Lead
Linaro.org │ Open source software for ARM SoCs

Re: [Intel-gfx] [PATCH v2] dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

[Marek Szyprowski]

Hi All,

On 2017-04-20 09:51, Daniel Vetter wrote:
> On Wed, Apr 19, 2017 at 01:36:10PM -0600, Logan Gunthorpe wrote:
>> Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
>> in highmem.h, the former can be aliased if any dma-buf user includes
>> that header.
>>
>> I'm personally trying to include highmem.h inside scatterlist.h and this
>> breaks the dma-buf code proper.
>>
>> Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.
>>
>> To maintain consistency I've renamed all four of kmap* and kunmap* to be
>> map* and unmap*. (Even though only kmap_atomic presently conflicts.)
>>
>> [1] https://www.spinics.net/lists/target-devel/msg15070.html
>>
>> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
>> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>
> Probably simplest if we pull this in through the drm-misc tree for 4.12.
> Can we have an ack for the v4l side for that pls?

For the V4L2/videobuf2:
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>


> Thanks, Daniel
>> ---
>>
>> Changes since v1:
>>
>> - Added the missing tegra driver (noticed by kbuild robot)
>> - Rebased off of drm-intel-next to get the i915 selftest that is new
>> - Fixed nits Sinclair pointed out.
>>
>>   drivers/dma-buf/dma-buf.c                      | 16 ++++++++--------
>>   drivers/gpu/drm/armada/armada_gem.c            |  8 ++++----
>>   drivers/gpu/drm/drm_prime.c                    |  8 ++++----
>>   drivers/gpu/drm/i915/i915_gem_dmabuf.c         |  8 ++++----
>>   drivers/gpu/drm/i915/selftests/mock_dmabuf.c   |  8 ++++----
>>   drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
>>   drivers/gpu/drm/tegra/gem.c                    |  8 ++++----
>>   drivers/gpu/drm/udl/udl_dmabuf.c               |  8 ++++----
>>   drivers/gpu/drm/vmwgfx/vmwgfx_prime.c          |  8 ++++----
>>   drivers/media/v4l2-core/videobuf2-dma-contig.c |  4 ++--
>>   drivers/media/v4l2-core/videobuf2-dma-sg.c     |  4 ++--
>>   drivers/media/v4l2-core/videobuf2-vmalloc.c    |  4 ++--
>>   drivers/staging/android/ion/ion.c              |  8 ++++----
>>   include/linux/dma-buf.h                        | 22 +++++++++++-----------
>>   14 files changed, 61 insertions(+), 61 deletions(-)
>>
>> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
>> index f72aaac..512bdbc 100644
>> --- a/drivers/dma-buf/dma-buf.c
>> +++ b/drivers/dma-buf/dma-buf.c
>> @@ -405,8 +405,8 @@ struct dma_buf *dma_buf_export(const struct dma_buf_export_info *exp_info)
>>   			  || !exp_info->ops->map_dma_buf
>>   			  || !exp_info->ops->unmap_dma_buf
>>   			  || !exp_info->ops->release
>> -			  || !exp_info->ops->kmap_atomic
>> -			  || !exp_info->ops->kmap
>> +			  || !exp_info->ops->map_atomic
>> +			  || !exp_info->ops->map
>>   			  || !exp_info->ops->mmap)) {
>>   		return ERR_PTR(-EINVAL);
>>   	}
>> @@ -872,7 +872,7 @@ void *dma_buf_kmap_atomic(struct dma_buf *dmabuf, unsigned long page_num)
>>   {
>>   	WARN_ON(!dmabuf);
>>
>> -	return dmabuf->ops->kmap_atomic(dmabuf, page_num);
>> +	return dmabuf->ops->map_atomic(dmabuf, page_num);
>>   }
>>   EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
>>
>> @@ -889,8 +889,8 @@ void dma_buf_kunmap_atomic(struct dma_buf *dmabuf, unsigned long page_num,
>>   {
>>   	WARN_ON(!dmabuf);
>>
>> -	if (dmabuf->ops->kunmap_atomic)
>> -		dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
>> +	if (dmabuf->ops->unmap_atomic)
>> +		dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
>>   }
>>   EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
>>
>> @@ -907,7 +907,7 @@ void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned long page_num)
>>   {
>>   	WARN_ON(!dmabuf);
>>
>> -	return dmabuf->ops->kmap(dmabuf, page_num);
>> +	return dmabuf->ops->map(dmabuf, page_num);
>>   }
>>   EXPORT_SYMBOL_GPL(dma_buf_kmap);
>>
>> @@ -924,8 +924,8 @@ void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned long page_num,
>>   {
>>   	WARN_ON(!dmabuf);
>>
>> -	if (dmabuf->ops->kunmap)
>> -		dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
>> +	if (dmabuf->ops->unmap)
>> +		dmabuf->ops->unmap(dmabuf, page_num, vaddr);
>>   }
>>   EXPORT_SYMBOL_GPL(dma_buf_kunmap);
>>
>> diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
>> index 1597458..d6c2a5d 100644
>> --- a/drivers/gpu/drm/armada/armada_gem.c
>> +++ b/drivers/gpu/drm/armada/armada_gem.c
>> @@ -529,10 +529,10 @@ static const struct dma_buf_ops armada_gem_prime_dmabuf_ops = {
>>   	.map_dma_buf	= armada_gem_prime_map_dma_buf,
>>   	.unmap_dma_buf	= armada_gem_prime_unmap_dma_buf,
>>   	.release	= drm_gem_dmabuf_release,
>> -	.kmap_atomic	= armada_gem_dmabuf_no_kmap,
>> -	.kunmap_atomic	= armada_gem_dmabuf_no_kunmap,
>> -	.kmap		= armada_gem_dmabuf_no_kmap,
>> -	.kunmap		= armada_gem_dmabuf_no_kunmap,
>> +	.map_atomic	= armada_gem_dmabuf_no_kmap,
>> +	.unmap_atomic	= armada_gem_dmabuf_no_kunmap,
>> +	.map		= armada_gem_dmabuf_no_kmap,
>> +	.unmap		= armada_gem_dmabuf_no_kunmap,
>>   	.mmap		= armada_gem_dmabuf_mmap,
>>   };
>>
>> diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
>> index 9fb65b7..954eb84 100644
>> --- a/drivers/gpu/drm/drm_prime.c
>> +++ b/drivers/gpu/drm/drm_prime.c
>> @@ -403,10 +403,10 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
>>   	.map_dma_buf = drm_gem_map_dma_buf,
>>   	.unmap_dma_buf = drm_gem_unmap_dma_buf,
>>   	.release = drm_gem_dmabuf_release,
>> -	.kmap = drm_gem_dmabuf_kmap,
>> -	.kmap_atomic = drm_gem_dmabuf_kmap_atomic,
>> -	.kunmap = drm_gem_dmabuf_kunmap,
>> -	.kunmap_atomic = drm_gem_dmabuf_kunmap_atomic,
>> +	.map = drm_gem_dmabuf_kmap,
>> +	.map_atomic = drm_gem_dmabuf_kmap_atomic,
>> +	.unmap = drm_gem_dmabuf_kunmap,
>> +	.unmap_atomic = drm_gem_dmabuf_kunmap_atomic,
>>   	.mmap = drm_gem_dmabuf_mmap,
>>   	.vmap = drm_gem_dmabuf_vmap,
>>   	.vunmap = drm_gem_dmabuf_vunmap,
>> diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>> index 11898cd..f225bf6 100644
>> --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>> +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>> @@ -200,10 +200,10 @@ static const struct dma_buf_ops i915_dmabuf_ops =  {
>>   	.map_dma_buf = i915_gem_map_dma_buf,
>>   	.unmap_dma_buf = i915_gem_unmap_dma_buf,
>>   	.release = drm_gem_dmabuf_release,
>> -	.kmap = i915_gem_dmabuf_kmap,
>> -	.kmap_atomic = i915_gem_dmabuf_kmap_atomic,
>> -	.kunmap = i915_gem_dmabuf_kunmap,
>> -	.kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
>> +	.map = i915_gem_dmabuf_kmap,
>> +	.map_atomic = i915_gem_dmabuf_kmap_atomic,
>> +	.unmap = i915_gem_dmabuf_kunmap,
>> +	.unmap_atomic = i915_gem_dmabuf_kunmap_atomic,
>>   	.mmap = i915_gem_dmabuf_mmap,
>>   	.vmap = i915_gem_dmabuf_vmap,
>>   	.vunmap = i915_gem_dmabuf_vunmap,
>> diff --git a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>> index 99da8f4..302f7d1 100644
>> --- a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>> +++ b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>> @@ -129,10 +129,10 @@ static const struct dma_buf_ops mock_dmabuf_ops =  {
>>   	.map_dma_buf = mock_map_dma_buf,
>>   	.unmap_dma_buf = mock_unmap_dma_buf,
>>   	.release = mock_dmabuf_release,
>> -	.kmap = mock_dmabuf_kmap,
>> -	.kmap_atomic = mock_dmabuf_kmap_atomic,
>> -	.kunmap = mock_dmabuf_kunmap,
>> -	.kunmap_atomic = mock_dmabuf_kunmap_atomic,
>> +	.map = mock_dmabuf_kmap,
>> +	.map_atomic = mock_dmabuf_kmap_atomic,
>> +	.unmap = mock_dmabuf_kunmap,
>> +	.unmap_atomic = mock_dmabuf_kunmap_atomic,
>>   	.mmap = mock_dmabuf_mmap,
>>   	.vmap = mock_dmabuf_vmap,
>>   	.vunmap = mock_dmabuf_vunmap,
>> diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>> index ee5883f..0dbe030 100644
>> --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>> +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>> @@ -160,10 +160,10 @@ static struct dma_buf_ops omap_dmabuf_ops = {
>>   	.release = omap_gem_dmabuf_release,
>>   	.begin_cpu_access = omap_gem_dmabuf_begin_cpu_access,
>>   	.end_cpu_access = omap_gem_dmabuf_end_cpu_access,
>> -	.kmap_atomic = omap_gem_dmabuf_kmap_atomic,
>> -	.kunmap_atomic = omap_gem_dmabuf_kunmap_atomic,
>> -	.kmap = omap_gem_dmabuf_kmap,
>> -	.kunmap = omap_gem_dmabuf_kunmap,
>> +	.map_atomic = omap_gem_dmabuf_kmap_atomic,
>> +	.unmap_atomic = omap_gem_dmabuf_kunmap_atomic,
>> +	.map = omap_gem_dmabuf_kmap,
>> +	.unmap = omap_gem_dmabuf_kunmap,
>>   	.mmap = omap_gem_dmabuf_mmap,
>>   };
>>
>> diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
>> index 17e62ec..8672f5d 100644
>> --- a/drivers/gpu/drm/tegra/gem.c
>> +++ b/drivers/gpu/drm/tegra/gem.c
>> @@ -619,10 +619,10 @@ static const struct dma_buf_ops tegra_gem_prime_dmabuf_ops = {
>>   	.map_dma_buf = tegra_gem_prime_map_dma_buf,
>>   	.unmap_dma_buf = tegra_gem_prime_unmap_dma_buf,
>>   	.release = tegra_gem_prime_release,
>> -	.kmap_atomic = tegra_gem_prime_kmap_atomic,
>> -	.kunmap_atomic = tegra_gem_prime_kunmap_atomic,
>> -	.kmap = tegra_gem_prime_kmap,
>> -	.kunmap = tegra_gem_prime_kunmap,
>> +	.map_atomic = tegra_gem_prime_kmap_atomic,
>> +	.unmap_atomic = tegra_gem_prime_kunmap_atomic,
>> +	.map = tegra_gem_prime_kmap,
>> +	.unmap = tegra_gem_prime_kunmap,
>>   	.mmap = tegra_gem_prime_mmap,
>>   	.vmap = tegra_gem_prime_vmap,
>>   	.vunmap = tegra_gem_prime_vunmap,
>> diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c b/drivers/gpu/drm/udl/udl_dmabuf.c
>> index ac90ffd..ed0e636 100644
>> --- a/drivers/gpu/drm/udl/udl_dmabuf.c
>> +++ b/drivers/gpu/drm/udl/udl_dmabuf.c
>> @@ -191,10 +191,10 @@ static struct dma_buf_ops udl_dmabuf_ops = {
>>   	.detach			= udl_detach_dma_buf,
>>   	.map_dma_buf		= udl_map_dma_buf,
>>   	.unmap_dma_buf		= udl_unmap_dma_buf,
>> -	.kmap			= udl_dmabuf_kmap,
>> -	.kmap_atomic		= udl_dmabuf_kmap_atomic,
>> -	.kunmap			= udl_dmabuf_kunmap,
>> -	.kunmap_atomic		= udl_dmabuf_kunmap_atomic,
>> +	.map			= udl_dmabuf_kmap,
>> +	.map_atomic		= udl_dmabuf_kmap_atomic,
>> +	.unmap			= udl_dmabuf_kunmap,
>> +	.unmap_atomic		= udl_dmabuf_kunmap_atomic,
>>   	.mmap			= udl_dmabuf_mmap,
>>   	.release		= drm_gem_dmabuf_release,
>>   };
>> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>> index 31fe32d..0d42a46 100644
>> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>> @@ -108,10 +108,10 @@ const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
>>   	.map_dma_buf = vmw_prime_map_dma_buf,
>>   	.unmap_dma_buf = vmw_prime_unmap_dma_buf,
>>   	.release = NULL,
>> -	.kmap = vmw_prime_dmabuf_kmap,
>> -	.kmap_atomic = vmw_prime_dmabuf_kmap_atomic,
>> -	.kunmap = vmw_prime_dmabuf_kunmap,
>> -	.kunmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
>> +	.map = vmw_prime_dmabuf_kmap,
>> +	.map_atomic = vmw_prime_dmabuf_kmap_atomic,
>> +	.unmap = vmw_prime_dmabuf_kunmap,
>> +	.unmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
>>   	.mmap = vmw_prime_dmabuf_mmap,
>>   	.vmap = vmw_prime_dmabuf_vmap,
>>   	.vunmap = vmw_prime_dmabuf_vunmap,
>> diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> index fb6a177..2db0413 100644
>> --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> @@ -356,8 +356,8 @@ static struct dma_buf_ops vb2_dc_dmabuf_ops = {
>>   	.detach = vb2_dc_dmabuf_ops_detach,
>>   	.map_dma_buf = vb2_dc_dmabuf_ops_map,
>>   	.unmap_dma_buf = vb2_dc_dmabuf_ops_unmap,
>> -	.kmap = vb2_dc_dmabuf_ops_kmap,
>> -	.kmap_atomic = vb2_dc_dmabuf_ops_kmap,
>> +	.map = vb2_dc_dmabuf_ops_kmap,
>> +	.map_atomic = vb2_dc_dmabuf_ops_kmap,
>>   	.vmap = vb2_dc_dmabuf_ops_vmap,
>>   	.mmap = vb2_dc_dmabuf_ops_mmap,
>>   	.release = vb2_dc_dmabuf_ops_release,
>> diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c
>> index ecff8f4..6fd1343 100644
>> --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
>> +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
>> @@ -504,8 +504,8 @@ static struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
>>   	.detach = vb2_dma_sg_dmabuf_ops_detach,
>>   	.map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
>>   	.unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
>> -	.kmap = vb2_dma_sg_dmabuf_ops_kmap,
>> -	.kmap_atomic = vb2_dma_sg_dmabuf_ops_kmap,
>> +	.map = vb2_dma_sg_dmabuf_ops_kmap,
>> +	.map_atomic = vb2_dma_sg_dmabuf_ops_kmap,
>>   	.vmap = vb2_dma_sg_dmabuf_ops_vmap,
>>   	.mmap = vb2_dma_sg_dmabuf_ops_mmap,
>>   	.release = vb2_dma_sg_dmabuf_ops_release,
>> diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c
>> index 3f77814..27d1db3 100644
>> --- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
>> +++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
>> @@ -342,8 +342,8 @@ static struct dma_buf_ops vb2_vmalloc_dmabuf_ops = {
>>   	.detach = vb2_vmalloc_dmabuf_ops_detach,
>>   	.map_dma_buf = vb2_vmalloc_dmabuf_ops_map,
>>   	.unmap_dma_buf = vb2_vmalloc_dmabuf_ops_unmap,
>> -	.kmap = vb2_vmalloc_dmabuf_ops_kmap,
>> -	.kmap_atomic = vb2_vmalloc_dmabuf_ops_kmap,
>> +	.map = vb2_vmalloc_dmabuf_ops_kmap,
>> +	.map_atomic = vb2_vmalloc_dmabuf_ops_kmap,
>>   	.vmap = vb2_vmalloc_dmabuf_ops_vmap,
>>   	.mmap = vb2_vmalloc_dmabuf_ops_mmap,
>>   	.release = vb2_vmalloc_dmabuf_ops_release,
>> diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
>> index f45115f..95a7f16 100644
>> --- a/drivers/staging/android/ion/ion.c
>> +++ b/drivers/staging/android/ion/ion.c
>> @@ -1020,10 +1020,10 @@ static const struct dma_buf_ops dma_buf_ops = {
>>   	.release = ion_dma_buf_release,
>>   	.begin_cpu_access = ion_dma_buf_begin_cpu_access,
>>   	.end_cpu_access = ion_dma_buf_end_cpu_access,
>> -	.kmap_atomic = ion_dma_buf_kmap,
>> -	.kunmap_atomic = ion_dma_buf_kunmap,
>> -	.kmap = ion_dma_buf_kmap,
>> -	.kunmap = ion_dma_buf_kunmap,
>> +	.map_atomic = ion_dma_buf_kmap,
>> +	.unmap_atomic = ion_dma_buf_kunmap,
>> +	.map = ion_dma_buf_kmap,
>> +	.unmap = ion_dma_buf_kunmap,
>>   };
>>
>>   struct dma_buf *ion_share_dma_buf(struct ion_client *client,
>> diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
>> index bfb3704..79f27d6 100644
>> --- a/include/linux/dma-buf.h
>> +++ b/include/linux/dma-buf.h
>> @@ -39,13 +39,13 @@ struct dma_buf_attachment;
>>
>>   /**
>>    * struct dma_buf_ops - operations possible on struct dma_buf
>> - * @kmap_atomic: maps a page from the buffer into kernel address
>> - * 		 space, users may not block until the subsequent unmap call.
>> - * 		 This callback must not sleep.
>> - * @kunmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
>> - * 		   This Callback must not sleep.
>> - * @kmap: maps a page from the buffer into kernel address space.
>> - * @kunmap: [optional] unmaps a page from the buffer.
>> + * @map_atomic: maps a page from the buffer into kernel address
>> + *		space, users may not block until the subsequent unmap call.
>> + *		This callback must not sleep.
>> + * @unmap_atomic: [optional] unmaps a atomically mapped page from the buffer.
>> + *		  This Callback must not sleep.
>> + * @map: maps a page from the buffer into kernel address space.
>> + * @unmap: [optional] unmaps a page from the buffer.
>>    * @vmap: [optional] creates a virtual mapping for the buffer into kernel
>>    *	  address space. Same restrictions as for vmap and friends apply.
>>    * @vunmap: [optional] unmaps a vmap from the buffer
>> @@ -206,10 +206,10 @@ struct dma_buf_ops {
>>   	 * to be restarted.
>>   	 */
>>   	int (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
>> -	void *(*kmap_atomic)(struct dma_buf *, unsigned long);
>> -	void (*kunmap_atomic)(struct dma_buf *, unsigned long, void *);
>> -	void *(*kmap)(struct dma_buf *, unsigned long);
>> -	void (*kunmap)(struct dma_buf *, unsigned long, void *);
>> +	void *(*map_atomic)(struct dma_buf *, unsigned long);
>> +	void (*unmap_atomic)(struct dma_buf *, unsigned long, void *);
>> +	void *(*map)(struct dma_buf *, unsigned long);
>> +	void (*unmap)(struct dma_buf *, unsigned long, void *);
>>
>>   	/**
>>   	 * @mmap:

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland

Re: [Intel-gfx] [PATCH v2] dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

[Sumit Semwal]

Hi Marek,

Thanks!

On 20 April 2017 at 13:36, Marek Szyprowski <m.szyprowski@samsung.com> wrote:
> Hi All,
>
> On 2017-04-20 09:51, Daniel Vetter wrote:
>>
>> On Wed, Apr 19, 2017 at 01:36:10PM -0600, Logan Gunthorpe wrote:
>>>
>>> Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
>>> in highmem.h, the former can be aliased if any dma-buf user includes
>>> that header.
>>>
>>> I'm personally trying to include highmem.h inside scatterlist.h and this
>>> breaks the dma-buf code proper.
>>>
>>> Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.
>>>
>>> To maintain consistency I've renamed all four of kmap* and kunmap* to be
>>> map* and unmap*. (Even though only kmap_atomic presently conflicts.)
>>>
>>> [1] https://www.spinics.net/lists/target-devel/msg15070.html
>>>
>>> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
>>> Reviewed-by: Sinclair Yeh <syeh@vmware.com>
>>
>> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
>>
>> Probably simplest if we pull this in through the drm-misc tree for 4.12.
>> Can we have an ack for the v4l side for that pls?
>
>
> For the V4L2/videobuf2:
> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
>
I will queue it up for drm-misc-fixes so it gets into 4.12.
>
>
>> Thanks, Daniel
Best,
Sumit.

>>>
>>> ---
>>>
>>> Changes since v1:
>>>
>>> - Added the missing tegra driver (noticed by kbuild robot)
>>> - Rebased off of drm-intel-next to get the i915 selftest that is new
>>> - Fixed nits Sinclair pointed out.
>>>
>>>   drivers/dma-buf/dma-buf.c                      | 16 ++++++++--------
>>>   drivers/gpu/drm/armada/armada_gem.c            |  8 ++++----
>>>   drivers/gpu/drm/drm_prime.c                    |  8 ++++----
>>>   drivers/gpu/drm/i915/i915_gem_dmabuf.c         |  8 ++++----
>>>   drivers/gpu/drm/i915/selftests/mock_dmabuf.c   |  8 ++++----
>>>   drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c      |  8 ++++----
>>>   drivers/gpu/drm/tegra/gem.c                    |  8 ++++----
>>>   drivers/gpu/drm/udl/udl_dmabuf.c               |  8 ++++----
>>>   drivers/gpu/drm/vmwgfx/vmwgfx_prime.c          |  8 ++++----
>>>   drivers/media/v4l2-core/videobuf2-dma-contig.c |  4 ++--
>>>   drivers/media/v4l2-core/videobuf2-dma-sg.c     |  4 ++--
>>>   drivers/media/v4l2-core/videobuf2-vmalloc.c    |  4 ++--
>>>   drivers/staging/android/ion/ion.c              |  8 ++++----
>>>   include/linux/dma-buf.h                        | 22
>>> +++++++++++-----------
>>>   14 files changed, 61 insertions(+), 61 deletions(-)
>>>
>>> diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
>>> index f72aaac..512bdbc 100644
>>> --- a/drivers/dma-buf/dma-buf.c
>>> +++ b/drivers/dma-buf/dma-buf.c
>>> @@ -405,8 +405,8 @@ struct dma_buf *dma_buf_export(const struct
>>> dma_buf_export_info *exp_info)
>>>                           || !exp_info->ops->map_dma_buf
>>>                           || !exp_info->ops->unmap_dma_buf
>>>                           || !exp_info->ops->release
>>> -                         || !exp_info->ops->kmap_atomic
>>> -                         || !exp_info->ops->kmap
>>> +                         || !exp_info->ops->map_atomic
>>> +                         || !exp_info->ops->map
>>>                           || !exp_info->ops->mmap)) {
>>>                 return ERR_PTR(-EINVAL);
>>>         }
>>> @@ -872,7 +872,7 @@ void *dma_buf_kmap_atomic(struct dma_buf *dmabuf,
>>> unsigned long page_num)
>>>   {
>>>         WARN_ON(!dmabuf);
>>>
>>> -       return dmabuf->ops->kmap_atomic(dmabuf, page_num);
>>> +       return dmabuf->ops->map_atomic(dmabuf, page_num);
>>>   }
>>>   EXPORT_SYMBOL_GPL(dma_buf_kmap_atomic);
>>>
>>> @@ -889,8 +889,8 @@ void dma_buf_kunmap_atomic(struct dma_buf *dmabuf,
>>> unsigned long page_num,
>>>   {
>>>         WARN_ON(!dmabuf);
>>>
>>> -       if (dmabuf->ops->kunmap_atomic)
>>> -               dmabuf->ops->kunmap_atomic(dmabuf, page_num, vaddr);
>>> +       if (dmabuf->ops->unmap_atomic)
>>> +               dmabuf->ops->unmap_atomic(dmabuf, page_num, vaddr);
>>>   }
>>>   EXPORT_SYMBOL_GPL(dma_buf_kunmap_atomic);
>>>
>>> @@ -907,7 +907,7 @@ void *dma_buf_kmap(struct dma_buf *dmabuf, unsigned
>>> long page_num)
>>>   {
>>>         WARN_ON(!dmabuf);
>>>
>>> -       return dmabuf->ops->kmap(dmabuf, page_num);
>>> +       return dmabuf->ops->map(dmabuf, page_num);
>>>   }
>>>   EXPORT_SYMBOL_GPL(dma_buf_kmap);
>>>
>>> @@ -924,8 +924,8 @@ void dma_buf_kunmap(struct dma_buf *dmabuf, unsigned
>>> long page_num,
>>>   {
>>>         WARN_ON(!dmabuf);
>>>
>>> -       if (dmabuf->ops->kunmap)
>>> -               dmabuf->ops->kunmap(dmabuf, page_num, vaddr);
>>> +       if (dmabuf->ops->unmap)
>>> +               dmabuf->ops->unmap(dmabuf, page_num, vaddr);
>>>   }
>>>   EXPORT_SYMBOL_GPL(dma_buf_kunmap);
>>>
>>> diff --git a/drivers/gpu/drm/armada/armada_gem.c
>>> b/drivers/gpu/drm/armada/armada_gem.c
>>> index 1597458..d6c2a5d 100644
>>> --- a/drivers/gpu/drm/armada/armada_gem.c
>>> +++ b/drivers/gpu/drm/armada/armada_gem.c
>>> @@ -529,10 +529,10 @@ static const struct dma_buf_ops
>>> armada_gem_prime_dmabuf_ops = {
>>>         .map_dma_buf    = armada_gem_prime_map_dma_buf,
>>>         .unmap_dma_buf  = armada_gem_prime_unmap_dma_buf,
>>>         .release        = drm_gem_dmabuf_release,
>>> -       .kmap_atomic    = armada_gem_dmabuf_no_kmap,
>>> -       .kunmap_atomic  = armada_gem_dmabuf_no_kunmap,
>>> -       .kmap           = armada_gem_dmabuf_no_kmap,
>>> -       .kunmap         = armada_gem_dmabuf_no_kunmap,
>>> +       .map_atomic     = armada_gem_dmabuf_no_kmap,
>>> +       .unmap_atomic   = armada_gem_dmabuf_no_kunmap,
>>> +       .map            = armada_gem_dmabuf_no_kmap,
>>> +       .unmap          = armada_gem_dmabuf_no_kunmap,
>>>         .mmap           = armada_gem_dmabuf_mmap,
>>>   };
>>>
>>> diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
>>> index 9fb65b7..954eb84 100644
>>> --- a/drivers/gpu/drm/drm_prime.c
>>> +++ b/drivers/gpu/drm/drm_prime.c
>>> @@ -403,10 +403,10 @@ static const struct dma_buf_ops
>>> drm_gem_prime_dmabuf_ops =  {
>>>         .map_dma_buf = drm_gem_map_dma_buf,
>>>         .unmap_dma_buf = drm_gem_unmap_dma_buf,
>>>         .release = drm_gem_dmabuf_release,
>>> -       .kmap = drm_gem_dmabuf_kmap,
>>> -       .kmap_atomic = drm_gem_dmabuf_kmap_atomic,
>>> -       .kunmap = drm_gem_dmabuf_kunmap,
>>> -       .kunmap_atomic = drm_gem_dmabuf_kunmap_atomic,
>>> +       .map = drm_gem_dmabuf_kmap,
>>> +       .map_atomic = drm_gem_dmabuf_kmap_atomic,
>>> +       .unmap = drm_gem_dmabuf_kunmap,
>>> +       .unmap_atomic = drm_gem_dmabuf_kunmap_atomic,
>>>         .mmap = drm_gem_dmabuf_mmap,
>>>         .vmap = drm_gem_dmabuf_vmap,
>>>         .vunmap = drm_gem_dmabuf_vunmap,
>>> diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>>> b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>>> index 11898cd..f225bf6 100644
>>> --- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>>> +++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
>>> @@ -200,10 +200,10 @@ static const struct dma_buf_ops i915_dmabuf_ops =
>>> {
>>>         .map_dma_buf = i915_gem_map_dma_buf,
>>>         .unmap_dma_buf = i915_gem_unmap_dma_buf,
>>>         .release = drm_gem_dmabuf_release,
>>> -       .kmap = i915_gem_dmabuf_kmap,
>>> -       .kmap_atomic = i915_gem_dmabuf_kmap_atomic,
>>> -       .kunmap = i915_gem_dmabuf_kunmap,
>>> -       .kunmap_atomic = i915_gem_dmabuf_kunmap_atomic,
>>> +       .map = i915_gem_dmabuf_kmap,
>>> +       .map_atomic = i915_gem_dmabuf_kmap_atomic,
>>> +       .unmap = i915_gem_dmabuf_kunmap,
>>> +       .unmap_atomic = i915_gem_dmabuf_kunmap_atomic,
>>>         .mmap = i915_gem_dmabuf_mmap,
>>>         .vmap = i915_gem_dmabuf_vmap,
>>>         .vunmap = i915_gem_dmabuf_vunmap,
>>> diff --git a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>> b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>> index 99da8f4..302f7d1 100644
>>> --- a/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>> +++ b/drivers/gpu/drm/i915/selftests/mock_dmabuf.c
>>> @@ -129,10 +129,10 @@ static const struct dma_buf_ops mock_dmabuf_ops =
>>> {
>>>         .map_dma_buf = mock_map_dma_buf,
>>>         .unmap_dma_buf = mock_unmap_dma_buf,
>>>         .release = mock_dmabuf_release,
>>> -       .kmap = mock_dmabuf_kmap,
>>> -       .kmap_atomic = mock_dmabuf_kmap_atomic,
>>> -       .kunmap = mock_dmabuf_kunmap,
>>> -       .kunmap_atomic = mock_dmabuf_kunmap_atomic,
>>> +       .map = mock_dmabuf_kmap,
>>> +       .map_atomic = mock_dmabuf_kmap_atomic,
>>> +       .unmap = mock_dmabuf_kunmap,
>>> +       .unmap_atomic = mock_dmabuf_kunmap_atomic,
>>>         .mmap = mock_dmabuf_mmap,
>>>         .vmap = mock_dmabuf_vmap,
>>>         .vunmap = mock_dmabuf_vunmap,
>>> diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>>> b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>>> index ee5883f..0dbe030 100644
>>> --- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>>> +++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
>>> @@ -160,10 +160,10 @@ static struct dma_buf_ops omap_dmabuf_ops = {
>>>         .release = omap_gem_dmabuf_release,
>>>         .begin_cpu_access = omap_gem_dmabuf_begin_cpu_access,
>>>         .end_cpu_access = omap_gem_dmabuf_end_cpu_access,
>>> -       .kmap_atomic = omap_gem_dmabuf_kmap_atomic,
>>> -       .kunmap_atomic = omap_gem_dmabuf_kunmap_atomic,
>>> -       .kmap = omap_gem_dmabuf_kmap,
>>> -       .kunmap = omap_gem_dmabuf_kunmap,
>>> +       .map_atomic = omap_gem_dmabuf_kmap_atomic,
>>> +       .unmap_atomic = omap_gem_dmabuf_kunmap_atomic,
>>> +       .map = omap_gem_dmabuf_kmap,
>>> +       .unmap = omap_gem_dmabuf_kunmap,
>>>         .mmap = omap_gem_dmabuf_mmap,
>>>   };
>>>
>>> diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
>>> index 17e62ec..8672f5d 100644
>>> --- a/drivers/gpu/drm/tegra/gem.c
>>> +++ b/drivers/gpu/drm/tegra/gem.c
>>> @@ -619,10 +619,10 @@ static const struct dma_buf_ops
>>> tegra_gem_prime_dmabuf_ops = {
>>>         .map_dma_buf = tegra_gem_prime_map_dma_buf,
>>>         .unmap_dma_buf = tegra_gem_prime_unmap_dma_buf,
>>>         .release = tegra_gem_prime_release,
>>> -       .kmap_atomic = tegra_gem_prime_kmap_atomic,
>>> -       .kunmap_atomic = tegra_gem_prime_kunmap_atomic,
>>> -       .kmap = tegra_gem_prime_kmap,
>>> -       .kunmap = tegra_gem_prime_kunmap,
>>> +       .map_atomic = tegra_gem_prime_kmap_atomic,
>>> +       .unmap_atomic = tegra_gem_prime_kunmap_atomic,
>>> +       .map = tegra_gem_prime_kmap,
>>> +       .unmap = tegra_gem_prime_kunmap,
>>>         .mmap = tegra_gem_prime_mmap,
>>>         .vmap = tegra_gem_prime_vmap,
>>>         .vunmap = tegra_gem_prime_vunmap,
>>> diff --git a/drivers/gpu/drm/udl/udl_dmabuf.c
>>> b/drivers/gpu/drm/udl/udl_dmabuf.c
>>> index ac90ffd..ed0e636 100644
>>> --- a/drivers/gpu/drm/udl/udl_dmabuf.c
>>> +++ b/drivers/gpu/drm/udl/udl_dmabuf.c
>>> @@ -191,10 +191,10 @@ static struct dma_buf_ops udl_dmabuf_ops = {
>>>         .detach                 = udl_detach_dma_buf,
>>>         .map_dma_buf            = udl_map_dma_buf,
>>>         .unmap_dma_buf          = udl_unmap_dma_buf,
>>> -       .kmap                   = udl_dmabuf_kmap,
>>> -       .kmap_atomic            = udl_dmabuf_kmap_atomic,
>>> -       .kunmap                 = udl_dmabuf_kunmap,
>>> -       .kunmap_atomic          = udl_dmabuf_kunmap_atomic,
>>> +       .map                    = udl_dmabuf_kmap,
>>> +       .map_atomic             = udl_dmabuf_kmap_atomic,
>>> +       .unmap                  = udl_dmabuf_kunmap,
>>> +       .unmap_atomic           = udl_dmabuf_kunmap_atomic,
>>>         .mmap                   = udl_dmabuf_mmap,
>>>         .release                = drm_gem_dmabuf_release,
>>>   };
>>> diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>>> b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>>> index 31fe32d..0d42a46 100644
>>> --- a/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>>> +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_prime.c
>>> @@ -108,10 +108,10 @@ const struct dma_buf_ops vmw_prime_dmabuf_ops =  {
>>>         .map_dma_buf = vmw_prime_map_dma_buf,
>>>         .unmap_dma_buf = vmw_prime_unmap_dma_buf,
>>>         .release = NULL,
>>> -       .kmap = vmw_prime_dmabuf_kmap,
>>> -       .kmap_atomic = vmw_prime_dmabuf_kmap_atomic,
>>> -       .kunmap = vmw_prime_dmabuf_kunmap,
>>> -       .kunmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
>>> +       .map = vmw_prime_dmabuf_kmap,
>>> +       .map_atomic = vmw_prime_dmabuf_kmap_atomic,
>>> +       .unmap = vmw_prime_dmabuf_kunmap,
>>> +       .unmap_atomic = vmw_prime_dmabuf_kunmap_atomic,
>>>         .mmap = vmw_prime_dmabuf_mmap,
>>>         .vmap = vmw_prime_dmabuf_vmap,
>>>         .vunmap = vmw_prime_dmabuf_vunmap,
>>> diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c
>>> b/drivers/media/v4l2-core/videobuf2-dma-contig.c
>>> index fb6a177..2db0413 100644
>>> --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
>>> +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
>>> @@ -356,8 +356,8 @@ static struct dma_buf_ops vb2_dc_dmabuf_ops = {
>>>         .detach = vb2_dc_dmabuf_ops_detach,
>>>         .map_dma_buf = vb2_dc_dmabuf_ops_map,
>>>         .unmap_dma_buf = vb2_dc_dmabuf_ops_unmap,
>>> -       .kmap = vb2_dc_dmabuf_ops_kmap,
>>> -       .kmap_atomic = vb2_dc_dmabuf_ops_kmap,
>>> +       .map = vb2_dc_dmabuf_ops_kmap,
>>> +       .map_atomic = vb2_dc_dmabuf_ops_kmap,
>>>         .vmap = vb2_dc_dmabuf_ops_vmap,
>>>         .mmap = vb2_dc_dmabuf_ops_mmap,
>>>         .release = vb2_dc_dmabuf_ops_release,
>>> diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c
>>> b/drivers/media/v4l2-core/videobuf2-dma-sg.c
>>> index ecff8f4..6fd1343 100644
>>> --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c
>>> +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c
>>> @@ -504,8 +504,8 @@ static struct dma_buf_ops vb2_dma_sg_dmabuf_ops = {
>>>         .detach = vb2_dma_sg_dmabuf_ops_detach,
>>>         .map_dma_buf = vb2_dma_sg_dmabuf_ops_map,
>>>         .unmap_dma_buf = vb2_dma_sg_dmabuf_ops_unmap,
>>> -       .kmap = vb2_dma_sg_dmabuf_ops_kmap,
>>> -       .kmap_atomic = vb2_dma_sg_dmabuf_ops_kmap,
>>> +       .map = vb2_dma_sg_dmabuf_ops_kmap,
>>> +       .map_atomic = vb2_dma_sg_dmabuf_ops_kmap,
>>>         .vmap = vb2_dma_sg_dmabuf_ops_vmap,
>>>         .mmap = vb2_dma_sg_dmabuf_ops_mmap,
>>>         .release = vb2_dma_sg_dmabuf_ops_release,
>>> diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c
>>> b/drivers/media/v4l2-core/videobuf2-vmalloc.c
>>> index 3f77814..27d1db3 100644
>>> --- a/drivers/media/v4l2-core/videobuf2-vmalloc.c
>>> +++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c
>>> @@ -342,8 +342,8 @@ static struct dma_buf_ops vb2_vmalloc_dmabuf_ops = {
>>>         .detach = vb2_vmalloc_dmabuf_ops_detach,
>>>         .map_dma_buf = vb2_vmalloc_dmabuf_ops_map,
>>>         .unmap_dma_buf = vb2_vmalloc_dmabuf_ops_unmap,
>>> -       .kmap = vb2_vmalloc_dmabuf_ops_kmap,
>>> -       .kmap_atomic = vb2_vmalloc_dmabuf_ops_kmap,
>>> +       .map = vb2_vmalloc_dmabuf_ops_kmap,
>>> +       .map_atomic = vb2_vmalloc_dmabuf_ops_kmap,
>>>         .vmap = vb2_vmalloc_dmabuf_ops_vmap,
>>>         .mmap = vb2_vmalloc_dmabuf_ops_mmap,
>>>         .release = vb2_vmalloc_dmabuf_ops_release,
>>> diff --git a/drivers/staging/android/ion/ion.c
>>> b/drivers/staging/android/ion/ion.c
>>> index f45115f..95a7f16 100644
>>> --- a/drivers/staging/android/ion/ion.c
>>> +++ b/drivers/staging/android/ion/ion.c
>>> @@ -1020,10 +1020,10 @@ static const struct dma_buf_ops dma_buf_ops = {
>>>         .release = ion_dma_buf_release,
>>>         .begin_cpu_access = ion_dma_buf_begin_cpu_access,
>>>         .end_cpu_access = ion_dma_buf_end_cpu_access,
>>> -       .kmap_atomic = ion_dma_buf_kmap,
>>> -       .kunmap_atomic = ion_dma_buf_kunmap,
>>> -       .kmap = ion_dma_buf_kmap,
>>> -       .kunmap = ion_dma_buf_kunmap,
>>> +       .map_atomic = ion_dma_buf_kmap,
>>> +       .unmap_atomic = ion_dma_buf_kunmap,
>>> +       .map = ion_dma_buf_kmap,
>>> +       .unmap = ion_dma_buf_kunmap,
>>>   };
>>>
>>>   struct dma_buf *ion_share_dma_buf(struct ion_client *client,
>>> diff --git a/include/linux/dma-buf.h b/include/linux/dma-buf.h
>>> index bfb3704..79f27d6 100644
>>> --- a/include/linux/dma-buf.h
>>> +++ b/include/linux/dma-buf.h
>>> @@ -39,13 +39,13 @@ struct dma_buf_attachment;
>>>
>>>   /**
>>>    * struct dma_buf_ops - operations possible on struct dma_buf
>>> - * @kmap_atomic: maps a page from the buffer into kernel address
>>> - *              space, users may not block until the subsequent unmap
>>> call.
>>> - *              This callback must not sleep.
>>> - * @kunmap_atomic: [optional] unmaps a atomically mapped page from the
>>> buffer.
>>> - *                This Callback must not sleep.
>>> - * @kmap: maps a page from the buffer into kernel address space.
>>> - * @kunmap: [optional] unmaps a page from the buffer.
>>> + * @map_atomic: maps a page from the buffer into kernel address
>>> + *             space, users may not block until the subsequent unmap
>>> call.
>>> + *             This callback must not sleep.
>>> + * @unmap_atomic: [optional] unmaps a atomically mapped page from the
>>> buffer.
>>> + *               This Callback must not sleep.
>>> + * @map: maps a page from the buffer into kernel address space.
>>> + * @unmap: [optional] unmaps a page from the buffer.
>>>    * @vmap: [optional] creates a virtual mapping for the buffer into
>>> kernel
>>>    *      address space. Same restrictions as for vmap and friends apply.
>>>    * @vunmap: [optional] unmaps a vmap from the buffer
>>> @@ -206,10 +206,10 @@ struct dma_buf_ops {
>>>          * to be restarted.
>>>          */
>>>         int (*end_cpu_access)(struct dma_buf *, enum dma_data_direction);
>>> -       void *(*kmap_atomic)(struct dma_buf *, unsigned long);
>>> -       void (*kunmap_atomic)(struct dma_buf *, unsigned long, void *);
>>> -       void *(*kmap)(struct dma_buf *, unsigned long);
>>> -       void (*kunmap)(struct dma_buf *, unsigned long, void *);
>>> +       void *(*map_atomic)(struct dma_buf *, unsigned long);
>>> +       void (*unmap_atomic)(struct dma_buf *, unsigned long, void *);
>>> +       void *(*map)(struct dma_buf *, unsigned long);
>>> +       void (*unmap)(struct dma_buf *, unsigned long, void *);
>>>
>>>         /**
>>>          * @mmap:
>
>
> Best regards
> --
> Marek Szyprowski, PhD
> Samsung R&D Institute Poland
>



-- 
Thanks and regards,

Sumit Semwal
Linaro Mobile Group - Kernel Team Lead
Linaro.org │ Open source software for ARM SoCs