mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 14:10:49 +07:00
6518202970
cma_alloc() doesn't really support gfp flags other than __GFP_NOWARN, so
convert gfp_mask parameter to boolean no_warn parameter.
This will help to avoid giving false feeling that this function supports
standard gfp flags and callers can pass __GFP_ZERO to get zeroed buffer,
what has already been an issue: see commit dd65a941f6 ("arm64:
dma-mapping: clear buffers allocated with FORCE_CONTIGUOUS flag").
Link: http://lkml.kernel.org/r/20180709122019eucas1p2340da484acfcc932537e6014f4fd2c29~-sqTPJKij2939229392eucas1p2j@eucas1p2.samsung.com
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Michał Nazarewicz <mina86@mina86.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Joonsoo Kim <js1304@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __CMA_H__
|
|
#define __CMA_H__
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* There is always at least global CMA area and a few optional
|
|
* areas configured in kernel .config.
|
|
*/
|
|
#ifdef CONFIG_CMA_AREAS
|
|
#define MAX_CMA_AREAS (1 + CONFIG_CMA_AREAS)
|
|
|
|
#else
|
|
#define MAX_CMA_AREAS (0)
|
|
|
|
#endif
|
|
|
|
struct cma;
|
|
|
|
extern unsigned long totalcma_pages;
|
|
extern phys_addr_t cma_get_base(const struct cma *cma);
|
|
extern unsigned long cma_get_size(const struct cma *cma);
|
|
extern const char *cma_get_name(const struct cma *cma);
|
|
|
|
extern int __init cma_declare_contiguous(phys_addr_t base,
|
|
phys_addr_t size, phys_addr_t limit,
|
|
phys_addr_t alignment, unsigned int order_per_bit,
|
|
bool fixed, const char *name, struct cma **res_cma);
|
|
extern int cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
|
|
unsigned int order_per_bit,
|
|
const char *name,
|
|
struct cma **res_cma);
|
|
extern struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
|
|
bool no_warn);
|
|
extern bool cma_release(struct cma *cma, const struct page *pages, unsigned int count);
|
|
|
|
extern int cma_for_each_area(int (*it)(struct cma *cma, void *data), void *data);
|
|
#endif
|