media: videobuf2: Move frame_vector into media subsystem

It's the only user. This also garbage collects the CONFIG_FRAME_VECTOR symbol from all over the tree (well just one place, somehow omap media driver still had this in its Kconfig, despite not using it). Reviewed-by: John Hubbard <[email protected]> Acked-by: Hans Verkuil <[email protected]> Acked-by: Mauro Carvalho Chehab <[email protected]> Acked-by: Tomasz Figa <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Cc: Jason Gunthorpe <[email protected]> Cc: Pawel Osciak <[email protected]> Cc: Marek Szyprowski <[email protected]> Cc: Kyungmin Park <[email protected]> Cc: Tomasz Figa <[email protected]> Cc: Mauro Carvalho Chehab <[email protected]> Cc: Andrew Morton <[email protected]> Cc: John Hubbard <[email protected]> Cc: Jérôme Glisse <[email protected]> Cc: Jan Kara <[email protected]> Cc: Dan Williams <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: Daniel Vetter <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
ambv · Jan 12, 2021 · eb83b8e · eb83b8e
1 parent 04769cb
commit eb83b8e
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Showing 9 changed files with 51 additions and 48 deletions.
diff --git a/drivers/media/common/videobuf2/Kconfig b/drivers/media/common/videobuf2/Kconfig
@@ -9,7 +9,6 @@ config VIDEOBUF2_V4L2
 
 config VIDEOBUF2_MEMOPS
 	tristate
-	select FRAME_VECTOR
 
 config VIDEOBUF2_DMA_CONTIG
 	tristate

diff --git a/drivers/media/common/videobuf2/Makefile b/drivers/media/common/videobuf2/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 videobuf2-common-objs := videobuf2-core.o
+videobuf2-common-objs += frame_vector.o
 
 ifeq ($(CONFIG_TRACEPOINTS),y)
   videobuf2-common-objs += vb2-trace.o

diff --git a/mm/frame_vector.c → ...ers/media/common/videobuf2/frame_vector.c b/mm/frame_vector.c → ...ers/media/common/videobuf2/frame_vector.c
@@ -8,6 +8,8 @@
 #include <linux/pagemap.h>
 #include <linux/sched.h>
 
+#include <media/frame_vector.h>
+
 /**
  * get_vaddr_frames() - map virtual addresses to pfns
  * @start:	starting user address

diff --git a/drivers/media/platform/omap/Kconfig b/drivers/media/platform/omap/Kconfig
@@ -12,6 +12,5 @@ config VIDEO_OMAP2_VOUT
 	depends on VIDEO_V4L2
 	select VIDEOBUF2_DMA_CONTIG
 	select OMAP2_VRFB if ARCH_OMAP2 || ARCH_OMAP3
-	select FRAME_VECTOR
 	help
 	  V4L2 Display driver support for OMAP2/3 based boards.
diff --git a/include/linux/mm.h b/include/linux/mm.h
@@ -1754,48 +1754,6 @@ int account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc);
 int __account_locked_vm(struct mm_struct *mm, unsigned long pages, bool inc,
 			struct task_struct *task, bool bypass_rlim);
 
-/* Container for pinned pfns / pages */
-struct frame_vector {
-	unsigned int nr_allocated;	/* Number of frames we have space for */
-	unsigned int nr_frames;	/* Number of frames stored in ptrs array */
-	bool got_ref;		/* Did we pin pages by getting page ref? */
-	bool is_pfns;		/* Does array contain pages or pfns? */
-	void *ptrs[];		/* Array of pinned pfns / pages. Use
-				 * pfns_vector_pages() or pfns_vector_pfns()
-				 * for access */
-};
-
-struct frame_vector *frame_vector_create(unsigned int nr_frames);
-void frame_vector_destroy(struct frame_vector *vec);
-int get_vaddr_frames(unsigned long start, unsigned int nr_pfns,
-		     struct frame_vector *vec);
-void put_vaddr_frames(struct frame_vector *vec);
-int frame_vector_to_pages(struct frame_vector *vec);
-void frame_vector_to_pfns(struct frame_vector *vec);
-
-static inline unsigned int frame_vector_count(struct frame_vector *vec)
-{
-	return vec->nr_frames;
-}
-
-static inline struct page **frame_vector_pages(struct frame_vector *vec)
-{
-	if (vec->is_pfns) {
-		int err = frame_vector_to_pages(vec);
-
-		if (err)
-			return ERR_PTR(err);
-	}
-	return (struct page **)(vec->ptrs);
-}
-
-static inline unsigned long *frame_vector_pfns(struct frame_vector *vec)
-{
-	if (!vec->is_pfns)
-		frame_vector_to_pfns(vec);
-	return (unsigned long *)(vec->ptrs);
-}
-
 struct kvec;
 int get_kernel_pages(const struct kvec *iov, int nr_pages, int write,
 			struct page **pages);

diff --git a/include/media/frame_vector.h b/include/media/frame_vector.h
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef _MEDIA_FRAME_VECTOR_H
+#define _MEDIA_FRAME_VECTOR_H
+
+/* Container for pinned pfns / pages in frame_vector.c */
+struct frame_vector {
+	unsigned int nr_allocated;	/* Number of frames we have space for */
+	unsigned int nr_frames;	/* Number of frames stored in ptrs array */
+	bool got_ref;		/* Did we pin pages by getting page ref? */
+	bool is_pfns;		/* Does array contain pages or pfns? */
+	void *ptrs[];		/* Array of pinned pfns / pages. Use
+				 * pfns_vector_pages() or pfns_vector_pfns()
+				 * for access */
+};
+
+struct frame_vector *frame_vector_create(unsigned int nr_frames);
+void frame_vector_destroy(struct frame_vector *vec);
+int get_vaddr_frames(unsigned long start, unsigned int nr_pfns,
+		     struct frame_vector *vec);
+void put_vaddr_frames(struct frame_vector *vec);
+int frame_vector_to_pages(struct frame_vector *vec);
+void frame_vector_to_pfns(struct frame_vector *vec);
+
+static inline unsigned int frame_vector_count(struct frame_vector *vec)
+{
+	return vec->nr_frames;
+}
+
+static inline struct page **frame_vector_pages(struct frame_vector *vec)
+{
+	if (vec->is_pfns) {
+		int err = frame_vector_to_pages(vec);
+
+		if (err)
+			return ERR_PTR(err);
+	}
+	return (struct page **)(vec->ptrs);
+}
+
+static inline unsigned long *frame_vector_pfns(struct frame_vector *vec)
+{
+	if (!vec->is_pfns)
+		frame_vector_to_pfns(vec);
+	return (unsigned long *)(vec->ptrs);
+}
+
+#endif /* _MEDIA_FRAME_VECTOR_H */
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
@@ -18,6 +18,7 @@
 #include <linux/dma-buf.h>
 #include <linux/bitops.h>
 #include <media/media-request.h>
+#include <media/frame_vector.h>
 
 #define VB2_MAX_FRAME	(32)
 #define VB2_MAX_PLANES	(8)

diff --git a/mm/Kconfig b/mm/Kconfig
@@ -804,9 +804,6 @@ config DEVICE_PRIVATE
 config VMAP_PFN
 	bool
 
-config FRAME_VECTOR
-	bool
-
 config ARCH_USES_HIGH_VMA_FLAGS
 	bool
 config ARCH_HAS_PKEYS

diff --git a/mm/Makefile b/mm/Makefile
@@ -110,7 +110,6 @@ obj-$(CONFIG_PAGE_EXTENSION) += page_ext.o
 obj-$(CONFIG_CMA_DEBUGFS) += cma_debug.o
 obj-$(CONFIG_USERFAULTFD) += userfaultfd.o
 obj-$(CONFIG_IDLE_PAGE_TRACKING) += page_idle.o
-obj-$(CONFIG_FRAME_VECTOR) += frame_vector.o
 obj-$(CONFIG_DEBUG_PAGE_REF) += debug_page_ref.o
 obj-$(CONFIG_HARDENED_USERCOPY) += usercopy.o
 obj-$(CONFIG_PERCPU_STATS) += percpu-stats.o