Changes in Makefile

01357a5a - dma-buf: cleanup dma_fence_unwrap implementation

Sun, 24 Apr 2022 14:55:14 +0000

dma-buf: cleanup dma_fence_unwrap implementationMove the code from the inline functions into exported functions.Signed-off-by: Christian König Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220518135844.3338-3-christian.koenig@amd.com List of files: /linux-6.15/drivers/dma-buf/Makefile

64a8f92f - dma-buf: add dma_fence_unwrap v2

Fri, 11 Mar 2022 09:27:53 +0000

dma-buf: add dma_fence_unwrap v2Add a general purpose helper to deep dive into dma_fence_chain/dma_fence_arraystructures and iterate over all the fences in them.This is useful when we need to flatten out all fences in those structures.v2: some selftests cleanup, improved function naming and documentationSigned-off-by: Christian König Reviewed-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20220311110244.1245-1-christian.koenig@amd.com List of files: /linux-6.15/drivers/dma-buf/Makefile

1d51775c - dma-buf: add dma_resv selftest v4

Fri, 24 Sep 2021 15:10:19 +0000

dma-buf: add dma_resv selftest v4Just exercising a very minor subset of the functionality, but alreadyproven useful.v2: add missing lockingv3: some more cleanup and consolidation, add unlocked test as wellv4: add a dma_resv_get_fences selftestSigned-off-by: Christian König Reviewed-by: Tvrtko Ursulin (v3)Reviewed-by: Daniel Vetter (v3)Link: https://patchwork.freedesktop.org/patch/msgid/20211005113742.1101-4-christian.koenig@amd.com List of files: /linux-6.15/drivers/dma-buf/Makefile

992c2381 - dma-buf: nuke seqno-fence

Wed, 28 Jul 2021 17:51:50 +0000

dma-buf: nuke seqno-fenceEntirely unused.Signed-off-by: Christian König Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20210729070330.41443-1-christian.koenig@amd.com List of files: /linux-6.15/drivers/dma-buf/Makefile

bdb8d06d - dmabuf: Add the capability to expose DMA-BUF stats in sysfs

Thu, 03 Jun 2021 21:47:51 +0000

dmabuf: Add the capability to expose DMA-BUF stats in sysfsOverview========The patch adds DMA-BUF statistics to /sys/kernel/dmabuf/buffers. Itallows statistics to be enabled for each DMA-BUF in sysfs by enablingthe config CONFIG_DMABUF_SYSFS_STATS.The following stats will be exposed by the interface:/sys/kernel/dmabuf/buffers//exporter_name/sys/kernel/dmabuf/buffers//size/sys/kernel/dmabuf/buffers//attachments//device/sys/kernel/dmabuf/buffers//attachments//map_counterThe inode_number is unique for each DMA-BUF and was added earlier [1]in order to allow userspace to track DMA-BUF usage across differentprocesses.Use Cases=========The interface provides a way to gather DMA-BUF per-buffer statisticsfrom production devices. These statistics will be used to derive DMA-BUFper-exporter stats and per-device usage stats for Android Bug reports.The corresponding userspace changes can be found at [2].Telemetry tools will also capture this information(along with othermemory metrics) periodically as well as on important events like aforeground app kill (which might have been triggered by Low MemoryKiller). It will also contribute to provide a snapshot of the systemmemory usage on other events such as OOM kills and Application NotResponding events.Background==========Currently, there are two existing interfaces that provide informationabout DMA-BUFs.1) /sys/kernel/debug/dma_buf/bufinfodebugfs is however unsuitable to be mounted in production systems andcannot be considered as an alternative to the sysfs interface beingproposed.2) proc//fdinfo/The proc//fdinfo/ files expose information about DMA-BUF fds.However, the existing procfs interfaces can only provide informationabout the buffers for which processes hold fds or have the buffersmmapped into their address space. Since the procfs interfaces alonecannot provide a full picture of all DMA-BUFs in the system, there isthe need for an alternate interface to provide this information onproduction systems.The patch contains the following major improvements over v1:1) Each attachment is represented by its own directory to allow creatinga symlink to the importing device and to also provide room for futureexpansion.2) The number of distinct mappings of each attachment is exposed in aseparate file.3) The per-buffer statistics are now in /sys/kernel/dmabuf/buffersinorder to make the interface expandable in future.All of the improvements above are based on suggestions/feedback fromDaniel Vetter and Christian König.A shell script that can be run on a classic Linux environment to readout the DMA-BUF statistics can be found at [3](suggested by JohnStultz).[1]: https://lore.kernel.org/patchwork/patch/1088791/[2]: https://android-review.googlesource.com/q/topic:%22dmabuf-sysfs%22+(status:open%20OR%20status:merged)[3]: https://android-review.googlesource.com/c/platform/system/memory/libmeminfo/+/1549734Reviewed-by: Greg Kroah-Hartman Signed-off-by: Hridya Valsaraju Reported-by: kernel test robot Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20210603214758.2955251-1-hridya@google.com List of files: /linux-6.15/drivers/dma-buf/Makefile

dc2f7e67 - dma-buf: Exercise dma-fence-chain under selftests

Thu, 09 Apr 2020 11:01:01 +0000

dma-buf: Exercise dma-fence-chain under selftestsA few very simple testcases to exercise the dma-fence-chain API.Signed-off-by: Chris Wilson Reviewed-by: Venkata Sandeep Dhanalakota Link: https://patchwork.freedesktop.org/patch/msgid/20200409110101.18400-3-chris@chris-wilson.co.uk List of files: /linux-6.15/drivers/dma-buf/Makefile

5248eb12 - dma-buf: heaps: Add heap helpers

Tue, 03 Dec 2019 17:26:38 +0000

dma-buf: heaps: Add heap helpersAdd generic helper dmabuf ops for dma heaps, so we can reducethe amount of duplicative code for the exported dmabufs.This code is an evolution of the Android ION implementation, sothanks to its original authors and maintainters: Rebecca Schultz Zavin, Colin Cross, Laura Abbott, and others!Cc: Laura Abbott Cc: Benjamin Gaignard Cc: Sumit Semwal Cc: Liam Mark Cc: Pratik Patel Cc: Brian Starkey Cc: Vincent Donnefort Cc: Sudipto Paul Cc: Andrew F. Davis Cc: Christoph Hellwig Cc: Chenbo Feng Cc: Alistair Strachan Cc: Hridya Valsaraju Cc: Sandeep Patil Cc: Hillf Danton Cc: Dave Airlie Cc: dri-devel@lists.freedesktop.orgReviewed-by: Benjamin Gaignard Reviewed-by: Brian Starkey Acked-by: Sandeep Patil Acked-by: Laura Abbott Tested-by: Ayan Kumar Halder Signed-off-by: John Stultz Signed-off-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/msgid/20191203172641.66642-3-john.stultz@linaro.org List of files: /linux-6.15/drivers/dma-buf/Makefile

c02a81fb - dma-buf: Add dma-buf heaps framework

Tue, 03 Dec 2019 17:26:37 +0000

dma-buf: Add dma-buf heaps frameworkThis framework allows a unified userspace interface for dma-bufexporters, allowing userland to allocate specific types of memoryfor use in dma-buf sharing.Each heap is given its own device node, which a user can allocatea dma-buf fd from using the DMA_HEAP_IOC_ALLOC.This code is an evoluiton of the Android ION implementation,and a big thanks is due to its authors/maintainers over timefor their effort: Rebecca Schultz Zavin, Colin Cross, Benjamin Gaignard, Laura Abbott, and many other contributors!Cc: Laura Abbott Cc: Benjamin Gaignard Cc: Sumit Semwal Cc: Liam Mark Cc: Pratik Patel Cc: Brian Starkey Cc: Vincent Donnefort Cc: Sudipto Paul Cc: Andrew F. Davis Cc: Christoph Hellwig Cc: Chenbo Feng Cc: Alistair Strachan Cc: Hridya Valsaraju Cc: Sandeep Patil Cc: Hillf Danton Cc: Dave Airlie Cc: dri-devel@lists.freedesktop.orgReviewed-by: Brian Starkey Acked-by: Sandeep Patil Signed-off-by: Andrew F. Davis Signed-off-by: John Stultz Signed-off-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/msgid/20191203172641.66642-2-john.stultz@linaro.org List of files: /linux-6.15/drivers/dma-buf/Makefile

fae7d7d5 - Revert "dma-buf: Add dma-buf heaps framework"

Wed, 30 Oct 2019 20:29:54 +0000

Revert "dma-buf: Add dma-buf heaps framework"This reverts commit a69b0e855d3fd278ff6f09a23e1edf929538e304.This patchset doesn't meet the UAPI requirements set out in [1] for the DRMsubsystem. Once the userspace component is reviewed and ready for mergewe can try again.[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirementsFixes: a69b0e855d3f ("dma-buf: Add dma-buf heaps framework")Cc: Laura Abbott Cc: Benjamin Gaignard Cc: Sumit Semwal Cc: Liam Mark Cc: Pratik Patel Cc: Brian Starkey Cc: Vincent Donnefort Cc: Sudipto Paul Cc: Andrew F. Davis Cc: Christoph Hellwig Cc: Chenbo Feng Cc: Alistair Strachan Cc: Hridya Valsaraju Cc: Hillf Danton Cc: dri-devel@lists.freedesktop.orgCc: Brian Starkey Cc: John Stultz Cc: Mauro Carvalho Chehab Cc: "David S. Miller" Cc: Greg Kroah-Hartman Cc: Rob Herring Cc: Jonathan Cameron Cc: "Paul E. McKenney" Cc: Sean Paul Cc: "Andrew F. Davis" Cc: linux-media@vger.kernel.orgCc: linaro-mm-sig@lists.linaro.orgAcked-by: David Airlie Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-6-sean@poorly.run List of files: /linux-6.15/drivers/dma-buf/Makefile

837324d4 - Revert "dma-buf: heaps: Add heap helpers"

Wed, 30 Oct 2019 20:29:53 +0000

Revert "dma-buf: heaps: Add heap helpers"This reverts commit 7b87ea704fd9606eaafa9150116536d72f5c4b1f.This patchset doesn't meet the UAPI requirements set out in [1] for the DRMsubsystem. Once the userspace component is reviewed and ready for mergewe can try again.[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirementsFixes: 7b87ea704fd9 ("dma-buf: heaps: Add heap helpers")Cc: Laura Abbott Cc: Benjamin Gaignard Cc: Sumit Semwal Cc: Liam Mark Cc: Pratik Patel Cc: Brian Starkey Cc: Vincent Donnefort Cc: Sudipto Paul Cc: Andrew F. Davis Cc: Christoph Hellwig Cc: Chenbo Feng Cc: Alistair Strachan Cc: Hridya Valsaraju Cc: Hillf Danton Cc: dri-devel@lists.freedesktop.orgCc: Brian Starkey Cc: John Stultz Cc: "Andrew F. Davis" Cc: linux-media@vger.kernel.orgCc: linaro-mm-sig@lists.linaro.orgAcked-by: David Airlie Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-5-sean@poorly.run List of files: /linux-6.15/drivers/dma-buf/Makefile

7b87ea70 - dma-buf: heaps: Add heap helpers

Mon, 21 Oct 2019 19:03:07 +0000

dma-buf: heaps: Add heap helpersAdd generic helper dmabuf ops for dma heaps, so we can reducethe amount of duplicative code for the exported dmabufs.This code is an evolution of the Android ION implementation, sothanks to its original authors and maintainters: Rebecca Schultz Zavin, Colin Cross, Laura Abbott, and others!Cc: Laura Abbott Cc: Benjamin Gaignard Cc: Sumit Semwal Cc: Liam Mark Cc: Pratik Patel Cc: Brian Starkey Cc: Vincent Donnefort Cc: Sudipto Paul Cc: Andrew F. Davis Cc: Christoph Hellwig Cc: Chenbo Feng Cc: Alistair Strachan Cc: Hridya Valsaraju Cc: Hillf Danton Cc: dri-devel@lists.freedesktop.orgReviewed-by: Benjamin Gaignard Reviewed-by: Brian Starkey Acked-by: Laura Abbott Tested-by: Ayan Kumar Halder Signed-off-by: John Stultz Signed-off-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/msgid/20191021190310.85221-3-john.stultz@linaro.org List of files: /linux-6.15/drivers/dma-buf/Makefile

a69b0e85 - dma-buf: Add dma-buf heaps framework

Mon, 21 Oct 2019 19:03:06 +0000

dma-buf: Add dma-buf heaps frameworkThis framework allows a unified userspace interface for dma-bufexporters, allowing userland to allocate specific types of memoryfor use in dma-buf sharing.Each heap is given its own device node, which a user can allocatea dma-buf fd from using the DMA_HEAP_IOC_ALLOC.This code is an evoluiton of the Android ION implementation,and a big thanks is due to its authors/maintainers over timefor their effort: Rebecca Schultz Zavin, Colin Cross, Benjamin Gaignard, Laura Abbott, and many other contributors!Cc: Laura Abbott Cc: Benjamin Gaignard Cc: Sumit Semwal Cc: Liam Mark Cc: Pratik Patel Cc: Brian Starkey Cc: Vincent Donnefort Cc: Sudipto Paul Cc: Andrew F. Davis Cc: Christoph Hellwig Cc: Chenbo Feng Cc: Alistair Strachan Cc: Hridya Valsaraju Cc: Hillf Danton Cc: dri-devel@lists.freedesktop.orgReviewed-by: Benjamin Gaignard Reviewed-by: Brian Starkey Acked-by: Laura Abbott Tested-by: Ayan Kumar Halder Signed-off-by: Andrew F. Davis Signed-off-by: John Stultz Signed-off-by: Sumit Semwal Link: https://patchwork.freedesktop.org/patch/msgid/20191021190310.85221-2-john.stultz@linaro.org List of files: /linux-6.15/drivers/dma-buf/Makefile

2989f645 - dma-buf: Add selftests for dma-fence

Mon, 19 Aug 2019 09:59:27 +0000

dma-buf: Add selftests for dma-fenceExercise the dma-fence API exported to drivers.Signed-off-by: Chris Wilson Cc: Daniel Vetter Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190819095928.32091-2-chris@chris-wilson.co.uk List of files: /linux-6.15/drivers/dma-buf/Makefile

9536b64a - dma-buf: Introduce selftesting framework

Mon, 19 Aug 2019 09:59:26 +0000

dma-buf: Introduce selftesting frameworkIn light of recent review slip ups, the absence of a suite of tests fordma-buf became apparent. Given the current plethora of testingframeworks, opt for one already in use by Intel's CI and so allow easyhook up into igt.We introduce a new module that when loaded will execute the list ofselftests and their subtest. The names of the selftests are put into themodinfo as parameters so that igt can identify each, and run themindependently, principally for ease of error reporting.Signed-off-by: Chris Wilson Cc: Daniel Vetter Cc: Tomi Sarvela Acked-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190819095928.32091-1-chris@chris-wilson.co.uk List of files: /linux-6.15/drivers/dma-buf/Makefile

52791eee - dma-buf: rename reservation_object to dma_resv

Sun, 11 Aug 2019 08:06:32 +0000

dma-buf: rename reservation_object to dma_resvBe more consistent with the naming of the other DMA-buf objects.Signed-off-by: Christian König Reviewed-by: Chris Wilson Link: https://patchwork.freedesktop.org/patch/323401/ List of files: /linux-6.15/drivers/dma-buf/Makefile

ec8f24b7 - treewide: Add SPDX license identifier - Makefile/Kconfig

Sun, 19 May 2019 12:07:45 +0000

treewide: Add SPDX license identifier - Makefile/KconfigAdd SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any formThese files fall under the project license, GPL v2 only. The resulting SPDXlicense identifier is: GPL-2.0-onlySigned-off-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/dma-buf/Makefile

7bf60c52 - dma-buf: add new dma_fence_chain container v7

Mon, 01 Apr 2019 09:50:55 +0000

dma-buf: add new dma_fence_chain container v7Lockless container implementation similar to a dma_fence_array, but withonly two elements per node and automatic garbage collection.v2: properly document dma_fence_chain_for_each, add dma_fence_chain_find_seqno, drop prev reference during garbage collection if it's not a chain fence.v3: use head and iterator for dma_fence_chain_for_eachv4: fix reference count in dma_fence_chain_enable_signalingv5: fix iteration when walking each chain nodev6: add __rcu for member 'prev' of struct chain nodev7: fix rcu warnings from kernel robotSigned-off-by: Christian König Reviewed-by: Lionel Landwerlin Link: https://patchwork.freedesktop.org/patch/295778/?series=58813&rev=1 List of files: /linux-6.15/drivers/dma-buf/Makefile

fbb0de79 - Add udmabuf misc device

Mon, 27 Aug 2018 09:34:44 +0000

Add udmabuf misc deviceA driver to let userspace turn memfd regions into dma-bufs.Use case: Allows qemu create dmabufs for the vga framebuffer orvirtio-gpu ressources. Then they can be passed around to displaythose guest things on the host. To spice client for classic fullframebuffer display, and hopefully some day to wayland server forseamless guest window display.qemu test branch: https://git.kraxel.org/cgit/qemu/log/?h=sirius/udmabufCc: David Airlie Cc: Tomeu Vizoso Cc: Laurent Pinchart Cc: Daniel Vetter Signed-off-by: Gerd Hoffmann Acked-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20180827093444.23623-1-kraxel@redhat.com List of files: /linux-6.15/drivers/dma-buf/Makefile

f54d1867 - dma-buf: Rename struct fence to dma_fence

Tue, 25 Oct 2016 12:00:45 +0000

dma-buf: Rename struct fence to dma_fenceI plan to usurp the short name of struct fence for a core kernel struct,and so I need to rename the specialised fence/timeline for DMAoperations to make room.A consensus was reached inhttps://lists.freedesktop.org/archives/dri-devel/2016-July/113083.htmlthat making clear this fence applies to DMA operations was a good thing.Since then the patch has grown a bit as usage increases, so hopefully itremains a good thing!(v2...: rebase, rerun spatch)v3: Compile on msm, spotted a manual fixup that I broke.v4: Try again for msm, sorry Danielcoccinelle script:@@@@- struct fence+ struct dma_fence@@@@- struct fence_ops+ struct dma_fence_ops@@@@- struct fence_cb+ struct dma_fence_cb@@@@- struct fence_array+ struct dma_fence_array@@@@- enum fence_flag_bits+ enum dma_fence_flag_bits@@@@(- fence_init+ dma_fence_init|- fence_release+ dma_fence_release|- fence_free+ dma_fence_free|- fence_get+ dma_fence_get|- fence_get_rcu+ dma_fence_get_rcu|- fence_put+ dma_fence_put|- fence_signal+ dma_fence_signal|- fence_signal_locked+ dma_fence_signal_locked|- fence_default_wait+ dma_fence_default_wait|- fence_add_callback+ dma_fence_add_callback|- fence_remove_callback+ dma_fence_remove_callback|- fence_enable_sw_signaling+ dma_fence_enable_sw_signaling|- fence_is_signaled_locked+ dma_fence_is_signaled_locked|- fence_is_signaled+ dma_fence_is_signaled|- fence_is_later+ dma_fence_is_later|- fence_later+ dma_fence_later|- fence_wait_timeout+ dma_fence_wait_timeout|- fence_wait_any_timeout+ dma_fence_wait_any_timeout|- fence_wait+ dma_fence_wait|- fence_context_alloc+ dma_fence_context_alloc|- fence_array_create+ dma_fence_array_create|- to_fence_array+ to_dma_fence_array|- fence_is_array+ dma_fence_is_array|- trace_fence_emit+ trace_dma_fence_emit|- FENCE_TRACE+ DMA_FENCE_TRACE|- FENCE_WARN+ DMA_FENCE_WARN|- FENCE_ERR+ DMA_FENCE_ERR) ( ... )Signed-off-by: Chris Wilson Reviewed-by: Gustavo Padovan Acked-by: Sumit Semwal Acked-by: Christian König Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/20161025120045.28839-1-chris@chris-wilson.co.uk List of files: /linux-6.15/drivers/dma-buf/Makefile

35538d78 - dma-buf/sw_sync: de-stage SW_SYNC

Thu, 11 Aug 2016 15:26:44 +0000

dma-buf/sw_sync: de-stage SW_SYNCSW_SYNC allows to run tests on the sync_file framework via debugfs on/sync/sw_syncOpening and closing the file triggers creation and release of a synctimeline. To create fences on this timeline the SW_SYNC_IOC_CREATE_FENCEioctl should be used. To increment the timeline value use SW_SYNC_IOC_INC.Also it exports Sync information on/sync/infoSigned-off-by: Gustavo Padovan Reviewed-by: Eric Engestrom Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/drivers/dma-buf/Makefile