Linaro-mm-sig

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2906 discussions

[PATCH v7 0/3] Add CMA heap for ION memory manager

by benjamin.gaignard＠linaro.org

From: Benjamin Gaignard <benjamin.gaignard(a)linaro.org> The goal of those patches is to allow ION clients (drivers or userland applications) to use Contiguous Memory Allocator (CMA). To get more info about CMA: http://lists.linaro.org/pipermail/linaro-mm-sig/2012-February/001328.html patches version 7: - rebased on Android kernel - fix ion Makefile - add ion_cma_map_kernel function - remove CONFIG_CMA compilation flags from ion_heap.c patches version 6: - add private field in ion_platform_heap to pass the device linked with CMA. - rework CMA heap to use private field. - prepare CMA heap for incoming dma_common_get_sgtable function http://lists.linaro.org/pipermail/linaro-mm-sig/2012-June/002109.html - simplify ion-ux500 driver. patches version 5: - port patches on android kernel 3.4 where ION use dmabuf - add ion_cma_heap_map_dma and ion_cma_heap_unmap_dma functions patches version 4: - add ION_HEAP_TYPE_DMA heap type in ion_heap_type enum. - CMA heap is now a "native" ION heap. - add ion_heap_create_full function to keep backward compatibilty. - clean up included files in CMA heap - ux500-ion is using ion_heap_create_full instead of ion_heap_create patches version 3: - add a private field in ion_heap structure instead of expose ion_device structure to all heaps - ion_cma_heap is no more a platform driver - ion_cma_heap use ion_heap private field to store the device pointer and make the link with reserved CMA regions - provide ux500-ion driver and configuration file for snowball board to give an example of how use CMA heaps patches version 2: - fix comments done by Andy Green Benjamin Gaignard (3): gpu: ion: fix ion_platform_data definition gpu: ion: add private field in ion_heap and ion_platform_heap structure gpu: ion: add CMA heap drivers/gpu/ion/Kconfig | 5 ++ drivers/gpu/ion/Makefile | 1 + drivers/gpu/ion/ion_cma_heap.c | 187 ++++++++++++++++++++++++++++++++++++++++ drivers/gpu/ion/ion_heap.c | 7 ++ drivers/gpu/ion/ion_priv.h | 16 ++++ include/linux/ion.h | 7 +- 6 files changed, 222 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/ion/ion_cma_heap.c -- 1.7.10

12 years, 6 months

[RFC 0/5] ARM: dma-mapping: New dma_map_ops to control IOVA more precisely

by Hiroshi Doyu

Hi, The following APIs are needed for us to support the legacy Tegra memory manager for devices("NvMap") with *DMA mapping API*. New API: ->iova_alloc(): To allocate IOVA area. ->iova_alloc_at(): To allocate IOVA area at specific address. ->iova_free(): To free IOVA area. ->map_page_at(): To map page at specific IOVA. misc: ->iova_get_free_total(): To return how much IOVA is available totally. ->iova_get_free_max(): To return the size of biggest IOVA area. Although NvMap itself will be replaced soon, there are cases for the above API where we need to specify IOVA explicitly. (1) HWAs may require the address for special purpose, like reset vector. (2) IOVA linear mapping: ex: [RFC 5/5] ARM: dma-mapping: Introduce dma_map_linear_attrs() for IOVA linear map (3) To support different heaps. To have allocation and mapping independently. Some of them could be supported with creating different mappings, but currently a device can have a single contiguous mapping, and we cannot specifiy any address inside of a map since all IOVA alloction is done implicitly now. This is the revised version of: http://lists.linaro.org/pipermail/linaro-mm-sig/2012-May/001947.html http://lists.linaro.org/pipermail/linaro-mm-sig/2012-May/001948.html http://lists.linaro.org/pipermail/linaro-mm-sig/2012-May/001949.html Any comment would be really appreciated. Hiroshi Doyu (5): ARM: dma-mapping: New dma_map_ops->iova_get_free_{total,max} functions ARM: dma-mapping: New dma_map_ops->iova_{alloc,free}() functions ARM: dma-mapping: New dma_map_ops->iova_alloc*_at* function ARM: dma-mapping: New dma_map_ops->map_page*_at* function ARM: dma-mapping: Introduce dma_map_linear_attrs() for IOVA linear map arch/arm/include/asm/dma-mapping.h | 55 +++++++++++++ arch/arm/mm/dma-mapping.c | 124 ++++++++++++++++++++++++++++++ include/asm-generic/dma-mapping-common.h | 20 +++++ include/linux/dma-mapping.h | 14 ++++ 4 files changed, 213 insertions(+), 0 deletions(-) -- 1.7.5.4

12 years, 7 months

[PATCH] dma-mapping: fix dma_common_get_sgtable() conditional compilation

by Marek Szyprowski

dma_common_get_sgtable() function doesn't depend on ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY, so it must not be compiled conditionally. Reported-by: Stephen Rothwell <sfr(a)canb.auug.org.au> Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> --- drivers/base/dma-mapping.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index 3fbedc7..0ce39a3 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -218,6 +218,8 @@ void dmam_release_declared_memory(struct device *dev) } EXPORT_SYMBOL(dmam_release_declared_memory); +#endif + /* * Create scatter-list for the already allocated DMA buffer. */ @@ -236,8 +238,6 @@ int dma_common_get_sgtable(struct device *dev, struct sg_table *sgt, } EXPORT_SYMBOL(dma_common_get_sgtable); -#endif - /* * Create userspace mapping for the DMA-coherent memory. */ -- 1.7.9.5

12 years, 7 months

DMABUF V4L2 patches got merged

by Mauro Carvalho Chehab

Hi all, Today, I finally merged the DMABUF V4L2 patches from Tomasz. The DMABUF allows replacing the old V4L2 Overlay method by something more robust and safer. It was a long road to get them ready for their upstream inclusion, and to be able to test on both embedded and personal computers. Along this weekend, I was able to test it using 4 different test scenarios: - vivi + s5p-tv; - uvcvideo + fimc (m2m) + s5p-tv; - s5k4ecgx + fimc (m2m) + s5p-tv; - uvcvideo + i915. The first 3 tests ran on a Samsung Origen Rev. A board; the 4th one on a notebook, with a Sandy Bridge i5core processor with GPU, and an embedded UVC camera. While testing the s5k4ecgx sensor driver, I also added support for multiplane at libv4l, via its plugin interface: http://git.linuxtv.org/v4l-utils.git/commit/ced1be346fe4f61c864cba9d81f6608… Such tests wouldn't be possible without the help of Linaro and Samsung, with donated me some hardware for the tests, and Ideas on Board for making uvcvideo + i915 driver to work especially for this test. Thank you all for your support! In particular, Sylwester helped me a lot to fix several non-related issues with the Origen board, that was not running with an upstream Kernel. There are a number of patches required to make the Origen board to work with an Upstream Kernel. Also, its sensor driver (s5k4ecgx) was not submitted upstream yet. In order to help others that may need to do similar tests, I added the needed patches on my experimental tree, at branch origen+dmabuf: http://git.linuxtv.org/mchehab/experimental.git/shortlog/refs/heads/origen%… Still missing there are the wireless/bluetooth support. It seems that there are some patches for it already, but they aren't submitted upstream, nor I didn't test they. I expect that Linaro and Samsung will be able to submit real soon the pending patches needed by Origen in time for its addition on 3.8. Thank you all! Mauro

12 years, 7 months

[PATCH] mm: cma: allocate pages from CMA if NR_FREE_PAGES approaches low water mark

by Marek Szyprowski

It has been observed that system tends to keep a lot of CMA free pages even in very high memory pressure use cases. The CMA fallback for movable pages is used very rarely, only when system is completely pruned from MOVABLE pages, what usually means that the out-of-memory even will be triggered very soon. To avoid such situation and make better use of CMA pages, a heuristics is introduced which turns on CMA fallback for movable pages when the real number of free pages (excluding CMA free pages) approaches low water mark. Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> Reviewed-by: Kyungmin Park <kyungmin.park(a)samsung.com> CC: Michal Nazarewicz <mina86(a)mina86.com> --- mm/page_alloc.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index fcb9719..90b51f3 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1076,6 +1076,15 @@ static struct page *__rmqueue(struct zone *zone, unsigned int order, { struct page *page; +#ifdef CONFIG_CMA + unsigned long nr_free = zone_page_state(zone, NR_FREE_PAGES); + unsigned long nr_cma_free = zone_page_state(zone, NR_FREE_CMA_PAGES); + + if (migratetype == MIGRATE_MOVABLE && nr_cma_free && + nr_free - nr_cma_free < 2 * low_wmark_pages(zone)) + migratetype = MIGRATE_CMA; +#endif /* CONFIG_CMA */ + retry_reserve: page = __rmqueue_smallest(zone, order, migratetype); -- 1.7.9.5

12 years, 7 months

[PATCH] mm: skip watermarks check for already isolated blocks in split_free_page()

by Marek Szyprowski

Since commit 2139cbe627b8 ("cma: fix counting of isolated pages") free pages in isolated pageblocks are not accounted to NR_FREE_PAGES counters, so watermarks check is not required if one operates on a free page in isolated pageblock. Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> --- mm/page_alloc.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index fd154fe..43ab09f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1394,10 +1394,12 @@ int capture_free_page(struct page *page, int alloc_order, int migratetype) zone = page_zone(page); order = page_order(page); - /* Obey watermarks as if the page was being allocated */ - watermark = low_wmark_pages(zone) + (1 << order); - if (!zone_watermark_ok(zone, 0, watermark, 0, 0)) - return 0; + if (get_pageblock_migratetype(page) != MIGRATE_ISOLATE) { + /* Obey watermarks as if the page was being allocated */ + watermark = low_wmark_pages(zone) + (1 << order); + if (!zone_watermark_ok(zone, 0, watermark, 0, 0)) + return 0; + } /* Remove page from free list */ list_del(&page->lru); -- 1.7.9.5

12 years, 7 months

[PATCH] mm: cma: WARN if freed memory is still in use

by Marek Szyprowski

Memory return to free_contig_range() must have no other references. Let kernel to complain loudly if page reference count is not equal to 1. Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> Reviewed-by: Kyungmin Park <kyungmin.park(a)samsung.com> CC: Michal Nazarewicz <mina86(a)mina86.com> --- mm/page_alloc.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 022e4ed..290c2eb 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5888,8 +5888,13 @@ done: void free_contig_range(unsigned long pfn, unsigned nr_pages) { - for (; nr_pages--; ++pfn) - __free_page(pfn_to_page(pfn)); + struct page *page = pfn_to_page(pfn); + int refcount = nr_pages; + for (; nr_pages--; page++) { + refcount -= page_count(page) == 1; + __free_page(page); + } + WARN(refcount != 0, "some pages are still in use!\n"); } #endif -- 1.7.9.5

12 years, 7 months

[PATCH] mm: use migrate_prep() instead of migrate_prep_local()

by Marek Szyprowski

__alloc_contig_migrate_range() should use all possible ways to get all the pages migrated from the given memory range, so pruning per-cpu lru lists for all CPUs is required, regadless the cost of such operation. Otherwise some pages which got stuck at per-cpu lru list might get missed by migration procedure causing the contiguous allocation to fail. Reported-by: SeongHwan Yoon <sunghwan.yun(a)samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park(a)samsung.com> --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 1bfe2b0..fcb9719 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5677,7 +5677,7 @@ static int __alloc_contig_migrate_range(struct compact_control *cc, unsigned int tries = 0; int ret = 0; - migrate_prep_local(); + migrate_prep(); while (pfn < end || !list_empty(&cc->migratepages)) { if (fatal_signal_pending(current)) { -- 1.7.9.5

12 years, 7 months

[PATCH] mm: remove watermark hacks for CMA

by Marek Szyprowski

Commits 2139cbe627b89 ("cma: fix counting of isolated pages") and d95ea5d18e69951 ("cma: fix watermark checking") introduced a reliable method of free page accounting when memory is being allocated from CMA regions, so the workaround introduced earlier by commit 49f223a9cd96c72 ("mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks") can be finally removed. Signed-off-by: Marek Szyprowski <m.szyprowski(a)samsung.com> --- include/linux/mmzone.h | 9 -------- mm/page_alloc.c | 57 ------------------------------------------------ 2 files changed, 66 deletions(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index c9fcd8f..f010b23 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -63,10 +63,8 @@ enum { #ifdef CONFIG_CMA # define is_migrate_cma(migratetype) unlikely((migratetype) == MIGRATE_CMA) -# define cma_wmark_pages(zone) zone->min_cma_pages #else # define is_migrate_cma(migratetype) false -# define cma_wmark_pages(zone) 0 #endif #define for_each_migratetype_order(order, type) \ @@ -372,13 +370,6 @@ struct zone { /* see spanned/present_pages for more description */ seqlock_t span_seqlock; #endif -#ifdef CONFIG_CMA - /* - * CMA needs to increase watermark levels during the allocation - * process to make sure that the system is not starved. - */ - unsigned long min_cma_pages; -#endif struct free_area free_area[MAX_ORDER]; #ifndef CONFIG_SPARSEMEM diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 43ab09f..5028a18 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5217,10 +5217,6 @@ static void __setup_per_zone_wmarks(void) zone->watermark[WMARK_LOW] = min_wmark_pages(zone) + (tmp >> 2); zone->watermark[WMARK_HIGH] = min_wmark_pages(zone) + (tmp >> 1); - zone->watermark[WMARK_MIN] += cma_wmark_pages(zone); - zone->watermark[WMARK_LOW] += cma_wmark_pages(zone); - zone->watermark[WMARK_HIGH] += cma_wmark_pages(zone); - setup_zone_migrate_reserve(zone); spin_unlock_irqrestore(&zone->lock, flags); } @@ -5765,54 +5761,6 @@ static int __alloc_contig_migrate_range(struct compact_control *cc, return ret > 0 ? 0 : ret; } -/* - * Update zone's cma pages counter used for watermark level calculation. - */ -static inline void __update_cma_watermarks(struct zone *zone, int count) -{ - unsigned long flags; - spin_lock_irqsave(&zone->lock, flags); - zone->min_cma_pages += count; - spin_unlock_irqrestore(&zone->lock, flags); - setup_per_zone_wmarks(); -} - -/* - * Trigger memory pressure bump to reclaim some pages in order to be able to - * allocate 'count' pages in single page units. Does similar work as - *__alloc_pages_slowpath() function. - */ -static int __reclaim_pages(struct zone *zone, gfp_t gfp_mask, int count) -{ - enum zone_type high_zoneidx = gfp_zone(gfp_mask); - struct zonelist *zonelist = node_zonelist(0, gfp_mask); - int did_some_progress = 0; - int order = 1; - - /* - * Increase level of watermarks to force kswapd do his job - * to stabilise at new watermark level. - */ - __update_cma_watermarks(zone, count); - - /* Obey watermarks as if the page was being allocated */ - while (!zone_watermark_ok(zone, 0, low_wmark_pages(zone), 0, 0)) { - wake_all_kswapd(order, zonelist, high_zoneidx, zone_idx(zone)); - - did_some_progress = __perform_reclaim(gfp_mask, order, zonelist, - NULL); - if (!did_some_progress) { - /* Exhausted what can be done so it's blamo time */ - out_of_memory(zonelist, gfp_mask, order, NULL, false); - } - } - - /* Restore original watermark levels. */ - __update_cma_watermarks(zone, -count); - - return count; -} - /** * alloc_contig_range() -- tries to allocate given range of pages * @start: start PFN to allocate @@ -5921,11 +5869,6 @@ int alloc_contig_range(unsigned long start, unsigned long end, goto done; } - /* - * Reclaim enough pages to make sure that contiguous allocation - * will not starve the system. - */ - __reclaim_pages(zone, GFP_HIGHUSER_MOVABLE, end-start); /* Grab isolated pages from freelists. */ outer_end = isolate_freepages_range(&cc, outer_start, end); -- 1.7.9.5

12 years, 7 months

[PATCHv10 00/26] Integration of videobuf2 with DMABUF

by Tomasz Stanislawski

Hello everyone, This patchset adds support for DMABUF [2] importing and exporting to V4L2 stack. v10: - rebase on media-next 3.7 - typos and style fixes in Documentation (from Hans Verkuil) - fix compilation error with __fill_vb2_buffer - fix uninitialized data_offset for single-planar queue - support for DMABUF importing in S5P-FIMC mem-to-mem interface - update layout of v4l2_exportbuffer structure - update ioctl flags in v4l2_ioctls for VIDIOC_EXPBUF - support for DMABUF exporting in m2m framework - allow exporting for file handles that calle REQBUBS/CREATE_BUF - simplify handling of get_device in vb2_dc_alloc - reduce pr_err to pr_debug while checking alignment of userptr - check size of userptr buffer against zero - align size to PAGE_SIZE at allocation of dma-contig buffer v9: - rebase on 3.6 - change type for fs to __s32 - add support for vb2_ioctl_expbuf - remove patch 'v4l: vb2: add support for DMA_ATTR_NO_KERNEL_MAPPING', it will be posted as a separate patch - fix typos and style in Documentation (from Hans Verkuil) - only vb2-core and vb2-dma-contig selects DMA_SHARED_BUFFER in Kconfig - use data_offset and length while queueing DMABUF - return the most recently used fd at VIDIOC_DQBUF - use (buffer-type, index, plane) tuple instead of mem_offset to identify a for exporting (from Hans Verkuil) - support for DMABUF mmap in vb2-dma-contig (from Laurent Pinchart) - add testing alignment of vaddr and size while verifying userptr against DMA capabilities (from Laurent Pinchart) - substitute VM_DONTDUMP with VM_RESERVED - simplify error handling in vb2_dc_get_dmabuf (from Laurent Pinchart) v8: - rebased on 3.6-rc1 - merged importer and exporter patchsets - fixed missing fields in v4l2_plane32 and v4l2_buffer32 structs - fixed typos/style in documentation - significant reduction of warnings from checkpatch.pl - fixed STREAMOFF issues reported by Dima Zavin [4] by adding __vb2_dqbuf helper to vb2-core - DC fails if userptr is not correctly aligned - add support for DMA attributes in DC - add support for buffers with no kernel mapping - add reference counting on device from allocator context - dummy support for mmap - use dma_get_sgtable, drop vb2_dc_kaddr_to_pages hack and vb2_dc_get_base_sgt helper v7: - support for V4L2_MEMORY_DMABUF in v4l2-compact-ioctl32.c - cosmetic fixes to the documentation - added importing for vmalloc because vmap support in dmabuf for 3.5 was pull-requested - support for dmabuf importing for VIVI - resurrect allocation of dma-contig context - remove reference of alloc_ctx in dma-contig buffer - use sg_alloc_table_from_pages - fix DMA scatterlist calls to use orig_nents instead of nents - fix memleak in vb2_dc_sgt_foreach_page (use orig_nents instead of nents) v6: - fixed missing entry in v4l2_memory_names - fixed a bug occuring after get_user_pages failure - fixed a bug caused by using invalid vma for get_user_pages - prepare/finish no longer call dma_sync for dmabuf buffers v5: - removed change of importer/exporter behaviour - fixes vb2_dc_pages_to_sgt basing on Laurent's hints - changed pin/unpin words to lock/unlock in Doc v4: - rebased on mainline 3.4-rc2 - included missing importing support for s5p-fimc and s5p-tv - added patch for changing map/unmap for importers - fixes to Documentation part - coding style fixes - pairing {map/unmap}_dmabuf in vb2-core - fixing variable types and semantic of arguments in videobufb2-dma-contig.c v3: - rebased on mainline 3.4-rc1 - split 'code refactor' patch to multiple smaller patches - squashed fixes to Sumit's patches - patchset is no longer dependant on 'DMA mapping redesign' - separated path for handling IO and non-IO mappings - add documentation for DMABUF importing to V4L - removed all DMABUF exporter related code - removed usage of dma_get_pages extension v2: - extended VIDIOC_EXPBUF argument from integer memoffset to struct v4l2_exportbuffer - added patch that breaks DMABUF spec on (un)map_atachment callcacks but allows to work with existing implementation of DMABUF prime in DRM - all dma-contig code refactoring patches were squashed - bugfixes v1: List of changes since [1]. - support for DMA api extension dma_get_pages, the function is used to retrieve pages used to create DMA mapping. - small fixes/code cleanup to videobuf2 - added prepare and finish callbacks to vb2 allocators, it is used keep consistency between dma-cpu acess to the memory (by Marek Szyprowski) - support for exporting of DMABUF buffer in V4L2 and Videobuf2, originated from [3]. - support for dma-buf exporting in vb2-dma-contig allocator - support for DMABUF for s5p-tv and s5p-fimc (capture interface) drivers, originated from [3] - changed handling for userptr buffers (by Marek Szyprowski, Andrzej Pietrasiewicz) - let mmap method to use dma_mmap_writecombine call (by Marek Szyprowski) [1] http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/4296… [2] https://lkml.org/lkml/2011/12/26/29 [3] http://thread.gmane.org/gmane.linux.kernel.cross-arch/12819 [4] http://article.gmane.org/gmane.linux.drivers.video-input-infrastructure/497… Laurent Pinchart (2): v4l: vb2-dma-contig: shorten vb2_dma_contig prefix to vb2_dc v4l: vb2-dma-contig: reorder functions Marek Szyprowski (4): v4l: vb2: add prepare/finish callbacks to allocators v4l: vb2-dma-contig: add prepare/finish to dma-contig allocator v4l: vb2-dma-contig: let mmap method to use dma_mmap_coherent call v4l: vb2-dma-contig: fail if user ptr buffer is not correctly aligned Sumit Semwal (4): v4l: Add DMABUF as a memory type v4l: vb2: add support for shared buffer (dma_buf) v4l: vb: remove warnings about MEMORY_DMABUF v4l: vb2-dma-contig: add support for dma_buf importing Tomasz Stanislawski (16): Documentation: media: description of DMABUF importing in V4L2 v4l: vb2-dma-contig: remove reference of alloc_ctx from a buffer v4l: vb2-dma-contig: add support for scatterlist in userptr mode v4l: vb2-vmalloc: add support for dmabuf importing v4l: vivi: support for dmabuf importing v4l: s5p-tv: mixer: support for dmabuf importing v4l: s5p-fimc: support for dmabuf importing Documentation: media: description of DMABUF exporting in V4L2 v4l: add buffer exporting via dmabuf v4l: vb2: add buffer exporting via dmabuf v4l: vb2-dma-contig: add support for DMABUF exporting v4l: vb2-dma-contig: add reference counting for a device from allocator context v4l: vb2-dma-contig: align buffer size to PAGE_SIZE v4l: s5p-fimc: support for dmabuf exporting v4l: s5p-tv: mixer: support for dmabuf exporting v4l: s5p-mfc: support for dmabuf exporting Documentation/DocBook/media/v4l/compat.xml | 7 + Documentation/DocBook/media/v4l/io.xml | 184 ++++- Documentation/DocBook/media/v4l/v4l2.xml | 1 + .../DocBook/media/v4l/vidioc-create-bufs.xml | 16 +- Documentation/DocBook/media/v4l/vidioc-expbuf.xml | 212 ++++++ Documentation/DocBook/media/v4l/vidioc-qbuf.xml | 17 + Documentation/DocBook/media/v4l/vidioc-reqbufs.xml | 47 +- drivers/media/platform/s5p-fimc/fimc-capture.c | 11 +- drivers/media/platform/s5p-fimc/fimc-m2m.c | 14 +- drivers/media/platform/s5p-mfc/s5p_mfc_dec.c | 14 + drivers/media/platform/s5p-mfc/s5p_mfc_enc.c | 14 + drivers/media/platform/s5p-tv/mixer_video.c | 12 +- drivers/media/platform/vivi.c | 2 +- drivers/media/v4l2-core/Kconfig | 3 + drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 19 + drivers/media/v4l2-core/v4l2-dev.c | 1 + drivers/media/v4l2-core/v4l2-ioctl.c | 11 + drivers/media/v4l2-core/v4l2-mem2mem.c | 13 + drivers/media/v4l2-core/videobuf-core.c | 4 + drivers/media/v4l2-core/videobuf2-core.c | 300 ++++++++- drivers/media/v4l2-core/videobuf2-dma-contig.c | 702 ++++++++++++++++++-- drivers/media/v4l2-core/videobuf2-memops.c | 40 -- drivers/media/v4l2-core/videobuf2-vmalloc.c | 56 ++ include/linux/videodev2.h | 35 + include/media/v4l2-ioctl.h | 2 + include/media/v4l2-mem2mem.h | 3 + include/media/videobuf2-core.h | 38 ++ include/media/videobuf2-memops.h | 5 - 28 files changed, 1645 insertions(+), 138 deletions(-) create mode 100644 Documentation/DocBook/media/v4l/vidioc-expbuf.xml -- 1.7.9.5

12 years, 8 months

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