[PATCH 0/1] v4l: videobuf2: Add DMA pool allocator

[Jeongtae Park <jtp.park@samsung.com>]

Hello!

The DMA pool allocator allocates a memory using dma_alloc_coherent(),
creates a pool using generic allocator in the initialization.
For every allocation requests, the allocator returns a part of its
memory pool using generic allocator instead of new memory allocation.

This allocator used for devices have below limitations.
- the start address should be aligned
- the range of memory access limited to the offset from the start
  address (= the allocation address should be existed in a
  constant offset from the start address)
- the allocation address should be aligned

I would be grateful for your comments.

This patch series contains:

[PATCH 1/1] v4l: videobuf2: Add DMA pool allocator

Best regards,
Jeongtae Park

Patch summary:

Jeongtae Park (1):
      v4l: videobuf2: Add DMA pool allocator

 drivers/media/video/Kconfig              |    7 +
 drivers/media/video/Makefile             |    1 +
 drivers/media/video/videobuf2-dma-pool.c |  310 ++++++++++++++++++++++++++++++
 include/media/videobuf2-dma-pool.h       |   37 ++++
 4 files changed, 355 insertions(+), 0 deletions(-)
 create mode 100644 drivers/media/video/videobuf2-dma-pool.c
 create mode 100644 include/media/videobuf2-dma-pool.h