diff mbox series

[v4,06/15] media: videobuf2: Move frame_vector into media subsystem

Message ID 20201026105818.2585306-7-daniel.vetter@ffwll.ch (mailing list archive)
State Not Applicable
Headers show
Series follow_pfn and other iomap races | expand

Commit Message

Daniel Vetter Oct. 26, 2020, 10:58 a.m. UTC 
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 <jhubbard@nvidia.com>
Acked-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Tomasz Figa <tfiga@chromium.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: linux-mm@kvack.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
--
v3:
- Create a new frame_vector.h header for this (Mauro)
---
 drivers/media/common/videobuf2/Kconfig        |  1 -
 drivers/media/common/videobuf2/Makefile       |  1 +
 .../media/common/videobuf2}/frame_vector.c    |  2 +
 drivers/media/platform/omap/Kconfig           |  1 -
 include/linux/mm.h                            | 42 -----------------
 include/media/frame_vector.h                  | 47 +++++++++++++++++++
 include/media/videobuf2-core.h                |  1 +
 mm/Kconfig                                    |  3 --
 mm/Makefile                                   |  1 -
 9 files changed, 51 insertions(+), 48 deletions(-)
 rename {mm => drivers/media/common/videobuf2}/frame_vector.c (99%)
 create mode 100644 include/media/frame_vector.h

Comments

Tomasz Figa Oct. 26, 2020, 10:03 p.m. UTC | #1 
On Mon, Oct 26, 2020 at 11:58:09AM +0100, Daniel Vetter wrote:
> 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 <jhubbard@nvidia.com>
> Acked-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Jason Gunthorpe <jgg@ziepe.ca>
> Cc: Pawel Osciak <pawel@osciak.com>
> Cc: Marek Szyprowski <m.szyprowski@samsung.com>
> Cc: Kyungmin Park <kyungmin.park@samsung.com>
> Cc: Tomasz Figa <tfiga@chromium.org>
> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: John Hubbard <jhubbard@nvidia.com>
> Cc: Jérôme Glisse <jglisse@redhat.com>
> Cc: Jan Kara <jack@suse.cz>
> Cc: Dan Williams <dan.j.williams@intel.com>
> Cc: linux-mm@kvack.org
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-samsung-soc@vger.kernel.org
> Cc: linux-media@vger.kernel.org
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> --
> v3:
> - Create a new frame_vector.h header for this (Mauro)
> ---
>  drivers/media/common/videobuf2/Kconfig        |  1 -
>  drivers/media/common/videobuf2/Makefile       |  1 +
>  .../media/common/videobuf2}/frame_vector.c    |  2 +
>  drivers/media/platform/omap/Kconfig           |  1 -
>  include/linux/mm.h                            | 42 -----------------
>  include/media/frame_vector.h                  | 47 +++++++++++++++++++
>  include/media/videobuf2-core.h                |  1 +
>  mm/Kconfig                                    |  3 --
>  mm/Makefile                                   |  1 -
>  9 files changed, 51 insertions(+), 48 deletions(-)
>  rename {mm => drivers/media/common/videobuf2}/frame_vector.c (99%)
>  create mode 100644 include/media/frame_vector.h
> 

Acked-by: Tomasz Figa <tfiga@chromium.org>

Best regards,
Tomasz

> diff --git a/drivers/media/common/videobuf2/Kconfig b/drivers/media/common/videobuf2/Kconfig
> index edbc99ebba87..d2223a12c95f 100644
> --- 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
> index 77bebe8b202f..54306f8d096c 100644
> --- 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 b/drivers/media/common/videobuf2/frame_vector.c
> similarity index 99%
> rename from mm/frame_vector.c
> rename to drivers/media/common/videobuf2/frame_vector.c
> index d44779e56313..6590987c14bd 100644
> --- a/mm/frame_vector.c
> +++ b/drivers/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
> index f73b5893220d..de16de46c0f4 100644
> --- 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
> index 16b799a0522c..acd60fbf1a5a 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -1743,48 +1743,6 @@ 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,
> -		     unsigned int gup_flags, 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
> new file mode 100644
> index 000000000000..1ed0cd64510d
> --- /dev/null
> +++ 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,
> +		     unsigned int gup_flags, 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
> index bbb3f26fbde9..d045e3a5a1d8 100644
> --- 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
> index 6c974888f86f..da6c943fe9f1 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -815,9 +815,6 @@ config DEVICE_PRIVATE
>  	  memory; i.e., memory that is only accessible from the device (or
>  	  group of devices). You likely also want to select HMM_MIRROR.
>  
> -config FRAME_VECTOR
> -	bool
> -
>  config ARCH_USES_HIGH_VMA_FLAGS
>  	bool
>  config ARCH_HAS_PKEYS
> diff --git a/mm/Makefile b/mm/Makefile
> index d5649f1c12c0..a025fd6c6afd 100644
> --- a/mm/Makefile
> +++ b/mm/Makefile
> @@ -111,7 +111,6 @@ 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
> -- 
> 2.28.0
>
diff mbox series

Patch

diff --git a/drivers/media/common/videobuf2/Kconfig b/drivers/media/common/videobuf2/Kconfig
index edbc99ebba87..d2223a12c95f 100644
--- 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
index 77bebe8b202f..54306f8d096c 100644
--- 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 b/drivers/media/common/videobuf2/frame_vector.c
similarity index 99%
rename from mm/frame_vector.c
rename to drivers/media/common/videobuf2/frame_vector.c
index d44779e56313..6590987c14bd 100644
--- a/mm/frame_vector.c
+++ b/drivers/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
index f73b5893220d..de16de46c0f4 100644
--- 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
index 16b799a0522c..acd60fbf1a5a 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1743,48 +1743,6 @@  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,
-		     unsigned int gup_flags, 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
new file mode 100644
index 000000000000..1ed0cd64510d
--- /dev/null
+++ 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,
+		     unsigned int gup_flags, 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
index bbb3f26fbde9..d045e3a5a1d8 100644
--- 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
index 6c974888f86f..da6c943fe9f1 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -815,9 +815,6 @@  config DEVICE_PRIVATE
 	  memory; i.e., memory that is only accessible from the device (or
 	  group of devices). You likely also want to select HMM_MIRROR.
 
-config FRAME_VECTOR
-	bool
-
 config ARCH_USES_HIGH_VMA_FLAGS
 	bool
 config ARCH_HAS_PKEYS
diff --git a/mm/Makefile b/mm/Makefile
index d5649f1c12c0..a025fd6c6afd 100644
--- a/mm/Makefile
+++ b/mm/Makefile
@@ -111,7 +111,6 @@  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