[PATCH v6 06/17] media: videobuf2: Move frame_vector into media subsystem
From: Daniel Vetter <hidden>
Date: 2020-11-19 14:44:34
Also in:
dri-devel, kvm, linux-media, linux-mm, linux-samsung-soc, lkml
Subsystem:
media input infrastructure (v4l/dvb), memory management, memory management - core, the rest, videobuf2 framework · Maintainers:
Mauro Carvalho Chehab, Andrew Morton, David Hildenbrand, Linus Torvalds, Tomasz Figa, Marek Szyprowski
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>
Acked-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Daniel Vetter <redacted>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Pawel Osciak <redacted>
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 <redacted>
Cc: Jan Kara <jack@suse.cz>
Cc: Dan Williams <redacted>
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 <redacted>
Signed-off-by: Daniel Vetter <redacted>
--
v3:
- Create a new frame_vector.h header for this (Mauro)
v5:
- Rebase over changes in frame-vector.c from Tomasz review.
---
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
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 f8c34b895c76..a0e65481a201 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 efb8c39bc933..b1a4a140863d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h@@ -1751,48 +1751,6 @@ 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
new file mode 100644
index 000000000000..bfed1710dc24
--- /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, + 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 d42423f884a7..0dcff24cba53 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig@@ -819,9 +819,6 @@ 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
index d73aed0fc99c..db41fff05038 100644
--- 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
--
2.29.2
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