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Sean O. Stalley
ad82362b2d
Add a wrapper function for dma_pool_alloc() to get zeroed memory. Signed-off-by: Sean O. Stalley <[email protected]> Cc: Vinod Koul <[email protected]> Cc: Bjorn Helgaas <[email protected]> Cc: Gilles Muller <[email protected]> Cc: Nicolas Palix <[email protected]> Cc: Michal Marek <[email protected]> Cc: Sebastian Andrzej Siewior <[email protected]> Cc: Jonathan Corbet <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
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* include/linux/dmapool.h
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*
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* Allocation pools for DMAable (coherent) memory.
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef LINUX_DMAPOOL_H
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#define LINUX_DMAPOOL_H
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#include <linux/scatterlist.h>
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#include <asm/io.h>
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struct device;
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struct dma_pool *dma_pool_create(const char *name, struct device *dev,
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size_t size, size_t align, size_t allocation);
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void dma_pool_destroy(struct dma_pool *pool);
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void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
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dma_addr_t *handle);
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static inline void *dma_pool_zalloc(struct dma_pool *pool, gfp_t mem_flags,
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dma_addr_t *handle)
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{
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return dma_pool_alloc(pool, mem_flags | __GFP_ZERO, handle);
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}
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void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t addr);
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/*
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* Managed DMA pool
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*/
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struct dma_pool *dmam_pool_create(const char *name, struct device *dev,
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size_t size, size_t align, size_t allocation);
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void dmam_pool_destroy(struct dma_pool *pool);
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#endif
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