From: Laura Abbott <labbott@redhat.com> To: "Sumit Semwal" <sumit.semwal@linaro.org>, "John Stultz" <john.stultz@linaro.org>, "Arve Hjønnevåg" <arve@android.com>, "Riley Andrews" <riandrews@android.com> Cc: Laura Abbott <labbott@redhat.com>, Daniel Vetter <daniel.vetter@ffwll.ch>, linaro-mm-sig@lists.linaro.org, devel@driverdev.osuosl.org, Russell King <linux@armlinux.org.uk>, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, Eun Taik Lee <eun.taik.lee@samsung.com>, Rohit kumar <rohit.kr@samsung.com>, Liviu Dudau <Liviu.Dudau@arm.com>, Jon Medhurst <tixy@linaro.org>, Jeremy Gebben <jgebben@codeaurora.org>, Bryan Huntsman <bryanh@codeaurora.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Android Kernel Team <kernel-team@android.com>, Arnd Bergmann <arnd@arndb.de> Subject: [RFCv3][PATCH 0/5] Cleanup Ion mapping/caching Date: Mon, 12 Sep 2016 14:32:53 -0700 [thread overview] Message-ID: <1473715978-11633-1-git-send-email-labbott@redhat.com> (raw) Hi, This is v3 on the attempt to remove the misuse of the DMA cache APIS from Ion. As from before: The APIs created are kernel_force_cache_clean and kernel_force_cache_invalidate. They force a clean and invalidate of the cache, respectively. The aim was to take the semantics of dma_sync and turn them into something that isn't dma_sync. This series includes a nominal implementation for arm/arm64, mostly for demonstration purposes. The major change from v2 is that the implementations no longer leverage the DMA abstractions. Russell King noted that dma_map and dma_unmap just 'happen' to do the right thing but they aren't guaranteed. I'm hoping at v3 there are no objections to the general concept but if they exist please express them. Thanks, Laura [1]http://www.mail-archive.com/driverdev-devel@linuxdriverproject.org/msg49406.html Laura Abbott (5): Documentation: Introduce kernel_force_cache_* APIs arm: Impelment ARCH_HAS_FORCE_CACHE arm64: Implement ARCH_HAS_FORCE_CACHE staging: android: ion: Convert to the kernel_force_cache APIs staging: ion: Add support for syncing with DMA_BUF_IOCTL_SYNC Documentation/cachetlb.txt | 18 ++++++- arch/arm/include/asm/cacheflush.h | 11 ++++ arch/arm/include/asm/glue-cache.h | 2 + arch/arm/mm/Makefile | 2 +- arch/arm/mm/cache-fa.S | 8 +++ arch/arm/mm/cache-nop.S | 6 +++ arch/arm/mm/cache-v4.S | 10 ++++ arch/arm/mm/cache-v4wb.S | 8 +++ arch/arm/mm/cache-v4wt.S | 8 +++ arch/arm/mm/cache-v6.S | 8 +++ arch/arm/mm/cache-v7.S | 13 +++++ arch/arm/mm/cacheflush.c | 71 +++++++++++++++++++++++++ arch/arm/mm/proc-arm920.S | 8 +++ arch/arm/mm/proc-arm922.S | 8 +++ arch/arm/mm/proc-arm925.S | 8 +++ arch/arm/mm/proc-arm926.S | 8 +++ arch/arm/mm/proc-feroceon.S | 11 ++++ arch/arm/mm/proc-macros.S | 2 + arch/arm/mm/proc-xsc3.S | 9 ++++ arch/arm/mm/proc-xscale.S | 9 ++++ arch/arm64/include/asm/cacheflush.h | 8 +++ arch/arm64/mm/cache.S | 24 +++++++-- arch/arm64/mm/flush.c | 11 ++++ drivers/staging/android/ion/ion.c | 53 +++++++++++------- drivers/staging/android/ion/ion_carveout_heap.c | 8 +-- drivers/staging/android/ion/ion_chunk_heap.c | 12 +++-- drivers/staging/android/ion/ion_page_pool.c | 7 +-- drivers/staging/android/ion/ion_priv.h | 11 ---- drivers/staging/android/ion/ion_system_heap.c | 6 +-- include/linux/cacheflush.h | 11 ++++ 30 files changed, 330 insertions(+), 49 deletions(-) create mode 100644 arch/arm/mm/cacheflush.c create mode 100644 include/linux/cacheflush.h -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: labbott@redhat.com (Laura Abbott) To: linux-arm-kernel@lists.infradead.org Subject: [RFCv3][PATCH 0/5] Cleanup Ion mapping/caching Date: Mon, 12 Sep 2016 14:32:53 -0700 [thread overview] Message-ID: <1473715978-11633-1-git-send-email-labbott@redhat.com> (raw) Hi, This is v3 on the attempt to remove the misuse of the DMA cache APIS from Ion. As from before: The APIs created are kernel_force_cache_clean and kernel_force_cache_invalidate. They force a clean and invalidate of the cache, respectively. The aim was to take the semantics of dma_sync and turn them into something that isn't dma_sync. This series includes a nominal implementation for arm/arm64, mostly for demonstration purposes. The major change from v2 is that the implementations no longer leverage the DMA abstractions. Russell King noted that dma_map and dma_unmap just 'happen' to do the right thing but they aren't guaranteed. I'm hoping at v3 there are no objections to the general concept but if they exist please express them. Thanks, Laura [1]http://www.mail-archive.com/driverdev-devel at linuxdriverproject.org/msg49406.html Laura Abbott (5): Documentation: Introduce kernel_force_cache_* APIs arm: Impelment ARCH_HAS_FORCE_CACHE arm64: Implement ARCH_HAS_FORCE_CACHE staging: android: ion: Convert to the kernel_force_cache APIs staging: ion: Add support for syncing with DMA_BUF_IOCTL_SYNC Documentation/cachetlb.txt | 18 ++++++- arch/arm/include/asm/cacheflush.h | 11 ++++ arch/arm/include/asm/glue-cache.h | 2 + arch/arm/mm/Makefile | 2 +- arch/arm/mm/cache-fa.S | 8 +++ arch/arm/mm/cache-nop.S | 6 +++ arch/arm/mm/cache-v4.S | 10 ++++ arch/arm/mm/cache-v4wb.S | 8 +++ arch/arm/mm/cache-v4wt.S | 8 +++ arch/arm/mm/cache-v6.S | 8 +++ arch/arm/mm/cache-v7.S | 13 +++++ arch/arm/mm/cacheflush.c | 71 +++++++++++++++++++++++++ arch/arm/mm/proc-arm920.S | 8 +++ arch/arm/mm/proc-arm922.S | 8 +++ arch/arm/mm/proc-arm925.S | 8 +++ arch/arm/mm/proc-arm926.S | 8 +++ arch/arm/mm/proc-feroceon.S | 11 ++++ arch/arm/mm/proc-macros.S | 2 + arch/arm/mm/proc-xsc3.S | 9 ++++ arch/arm/mm/proc-xscale.S | 9 ++++ arch/arm64/include/asm/cacheflush.h | 8 +++ arch/arm64/mm/cache.S | 24 +++++++-- arch/arm64/mm/flush.c | 11 ++++ drivers/staging/android/ion/ion.c | 53 +++++++++++------- drivers/staging/android/ion/ion_carveout_heap.c | 8 +-- drivers/staging/android/ion/ion_chunk_heap.c | 12 +++-- drivers/staging/android/ion/ion_page_pool.c | 7 +-- drivers/staging/android/ion/ion_priv.h | 11 ---- drivers/staging/android/ion/ion_system_heap.c | 6 +-- include/linux/cacheflush.h | 11 ++++ 30 files changed, 330 insertions(+), 49 deletions(-) create mode 100644 arch/arm/mm/cacheflush.c create mode 100644 include/linux/cacheflush.h -- 2.7.4
next reply other threads:[~2016-09-12 21:33 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-09-12 21:32 Laura Abbott [this message] 2016-09-12 21:32 ` [RFCv3][PATCH 0/5] Cleanup Ion mapping/caching Laura Abbott 2016-09-12 21:32 ` [RFCv3][PATCH 1/5] Documentation: Introduce kernel_force_cache_* APIs Laura Abbott 2016-09-12 21:32 ` Laura Abbott 2016-09-12 21:32 ` [RFCv3][PATCH 2/5] arm: Impelment ARCH_HAS_FORCE_CACHE Laura Abbott 2016-09-12 21:32 ` Laura Abbott 2016-09-12 21:32 ` [RFCv3][PATCH 3/5] arm64: Implement ARCH_HAS_FORCE_CACHE Laura Abbott 2016-09-12 21:32 ` Laura Abbott 2016-09-13 9:19 ` Will Deacon 2016-09-13 9:19 ` Will Deacon 2016-09-13 15:02 ` Laura Abbott 2016-09-13 15:02 ` Laura Abbott 2016-09-13 15:14 ` Will Deacon 2016-09-13 15:14 ` Will Deacon 2016-09-13 18:41 ` Laura Abbott 2016-09-13 18:41 ` Laura Abbott 2017-02-21 6:05 ` [Linaro-mm-sig] " Chen Feng 2017-02-21 6:05 ` Chen Feng 2017-02-21 19:29 ` Laura Abbott 2017-02-21 19:29 ` Laura Abbott 2017-02-23 1:01 ` Chen Feng 2017-02-23 1:01 ` Chen Feng 2017-02-23 16:03 ` Laura Abbott 2017-02-23 16:03 ` Laura Abbott 2016-09-12 21:32 ` [RFCv3][PATCH 4/5] staging: android: ion: Convert to the kernel_force_cache APIs Laura Abbott 2016-09-12 21:32 ` Laura Abbott 2016-09-12 21:32 ` [RFCv3][PATCH 5/5] staging: ion: Add support for syncing with DMA_BUF_IOCTL_SYNC Laura Abbott 2016-09-12 21:32 ` Laura Abbott
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