mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 05:36:35 +07:00
ad82362b2d
Add a wrapper function for dma_pool_alloc() to get zeroed memory. Signed-off-by: Sean O. Stalley <sean.stalley@intel.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Gilles Muller <Gilles.Muller@lip6.fr> Cc: Nicolas Palix <nicolas.palix@imag.fr> Cc: Michal Marek <mmarek@suse.cz> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
44 lines
1.1 KiB
C
44 lines
1.1 KiB
C
/*
|
|
* include/linux/dmapool.h
|
|
*
|
|
* Allocation pools for DMAable (coherent) memory.
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#ifndef LINUX_DMAPOOL_H
|
|
#define LINUX_DMAPOOL_H
|
|
|
|
#include <linux/scatterlist.h>
|
|
#include <asm/io.h>
|
|
|
|
struct device;
|
|
|
|
struct dma_pool *dma_pool_create(const char *name, struct device *dev,
|
|
size_t size, size_t align, size_t allocation);
|
|
|
|
void dma_pool_destroy(struct dma_pool *pool);
|
|
|
|
void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
|
|
dma_addr_t *handle);
|
|
|
|
static inline void *dma_pool_zalloc(struct dma_pool *pool, gfp_t mem_flags,
|
|
dma_addr_t *handle)
|
|
{
|
|
return dma_pool_alloc(pool, mem_flags | __GFP_ZERO, handle);
|
|
}
|
|
|
|
void dma_pool_free(struct dma_pool *pool, void *vaddr, dma_addr_t addr);
|
|
|
|
/*
|
|
* Managed DMA pool
|
|
*/
|
|
struct dma_pool *dmam_pool_create(const char *name, struct device *dev,
|
|
size_t size, size_t align, size_t allocation);
|
|
void dmam_pool_destroy(struct dma_pool *pool);
|
|
|
|
#endif
|
|
|