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| author | John Stultz <john.stultz@linaro.org> | 2019-10-21 19:03:09 +0000 |
|---|---|---|
| committer | Sumit Semwal <sumit.semwal@linaro.org> | 2019-10-25 17:01:49 +0530 |
| commit | 43d7238fb9ac897b29912368b3359e72bae469c4 (patch) | |
| tree | ac029e781bee42f9e95521c3e4f97676f96c58a6 /drivers/dma-buf/heaps/Kconfig | |
| parent | 47a32f9c12266d450b92089148c6039591bd9909 (diff) | |
| download | linux-stable-43d7238fb9ac897b29912368b3359e72bae469c4.tar.gz linux-stable-43d7238fb9ac897b29912368b3359e72bae469c4.tar.bz2 linux-stable-43d7238fb9ac897b29912368b3359e72bae469c4.zip | |
dma-buf: heaps: Add CMA heap to dmabuf heaps
This adds a CMA heap, which allows userspace to allocate
a dma-buf of contiguous memory out of a CMA region.
This code is an evolution of the Android ION implementation, so
thanks to its original author and maintainters:
Benjamin Gaignard, Laura Abbott, and others!
NOTE: This patch only adds the default CMA heap. We will enable
selectively adding other CMA memory regions to the dmabuf heaps
interface with a later patch (which requires a dt binding)
Cc: Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Brian Starkey <brian.starkey@arm.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Tested-by: Ayan Kumar Halder <ayan.halder@arm.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021190310.85221-5-john.stultz@linaro.org
Diffstat (limited to 'drivers/dma-buf/heaps/Kconfig')
| -rw-r--r-- | drivers/dma-buf/heaps/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/dma-buf/heaps/Kconfig b/drivers/dma-buf/heaps/Kconfig index 205052744169..a5eef06c4226 100644 --- a/drivers/dma-buf/heaps/Kconfig +++ b/drivers/dma-buf/heaps/Kconfig @@ -4,3 +4,11 @@ config DMABUF_HEAPS_SYSTEM help Choose this option to enable the system dmabuf heap. The system heap is backed by pages from the buddy allocator. If in doubt, say Y. + +config DMABUF_HEAPS_CMA + bool "DMA-BUF CMA Heap" + depends on DMABUF_HEAPS && DMA_CMA + help + Choose this option to enable dma-buf CMA heap. This heap is backed + by the Contiguous Memory Allocator (CMA). If your system has these + regions, you should say Y here. |