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authorSasha Levin <sasha.levin@oracle.com>2015-04-14 15:47:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-14 16:49:04 -0700
commitac173824959adeb489f9fcf88858774c4535a241 (patch)
tree2c26317c0d3974bda7827118886cc08d71e8b356 /mm/cma.c
parent6e276d2a517fba71a2be2252fdffb237e746e784 (diff)
downloadlinux-ac173824959adeb489f9fcf88858774c4535a241.tar.bz2
mm: cma: constify and use correct signness in mm/cma.c
Constify function parameters and use correct signness where needed. Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Gregory Fong <gregory.0xf0@gmail.com> Cc: Pintu Kumar <pintu.k@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/cma.c')
-rw-r--r--mm/cma.c24
1 files changed, 14 insertions, 10 deletions
diff --git a/mm/cma.c b/mm/cma.c
index 7f6045420925..47203faaf65e 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -41,17 +41,18 @@ struct cma cma_areas[MAX_CMA_AREAS];
unsigned cma_area_count;
static DEFINE_MUTEX(cma_mutex);
-phys_addr_t cma_get_base(struct cma *cma)
+phys_addr_t cma_get_base(const struct cma *cma)
{
return PFN_PHYS(cma->base_pfn);
}
-unsigned long cma_get_size(struct cma *cma)
+unsigned long cma_get_size(const struct cma *cma)
{
return cma->count << PAGE_SHIFT;
}
-static unsigned long cma_bitmap_aligned_mask(struct cma *cma, int align_order)
+static unsigned long cma_bitmap_aligned_mask(const struct cma *cma,
+ int align_order)
{
if (align_order <= cma->order_per_bit)
return 0;
@@ -62,7 +63,8 @@ static unsigned long cma_bitmap_aligned_mask(struct cma *cma, int align_order)
* Find a PFN aligned to the specified order and return an offset represented in
* order_per_bits.
*/
-static unsigned long cma_bitmap_aligned_offset(struct cma *cma, int align_order)
+static unsigned long cma_bitmap_aligned_offset(const struct cma *cma,
+ int align_order)
{
if (align_order <= cma->order_per_bit)
return 0;
@@ -71,13 +73,14 @@ static unsigned long cma_bitmap_aligned_offset(struct cma *cma, int align_order)
- cma->base_pfn) >> cma->order_per_bit;
}
-static unsigned long cma_bitmap_pages_to_bits(struct cma *cma,
- unsigned long pages)
+static unsigned long cma_bitmap_pages_to_bits(const struct cma *cma,
+ unsigned long pages)
{
return ALIGN(pages, 1UL << cma->order_per_bit) >> cma->order_per_bit;
}
-static void cma_clear_bitmap(struct cma *cma, unsigned long pfn, int count)
+static void cma_clear_bitmap(struct cma *cma, unsigned long pfn,
+ unsigned int count)
{
unsigned long bitmap_no, bitmap_count;
@@ -162,7 +165,8 @@ core_initcall(cma_init_reserved_areas);
* This function creates custom contiguous area from already reserved memory.
*/
int __init cma_init_reserved_mem(phys_addr_t base, phys_addr_t size,
- int order_per_bit, struct cma **res_cma)
+ unsigned int order_per_bit,
+ struct cma **res_cma)
{
struct cma *cma;
phys_addr_t alignment;
@@ -353,7 +357,7 @@ err:
* This function allocates part of contiguous memory on specific
* contiguous memory area.
*/
-struct page *cma_alloc(struct cma *cma, int count, unsigned int align)
+struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
{
unsigned long mask, offset, pfn, start = 0;
unsigned long bitmap_maxno, bitmap_no, bitmap_count;
@@ -424,7 +428,7 @@ struct page *cma_alloc(struct cma *cma, int count, unsigned int align)
* It returns false when provided pages do not belong to contiguous area and
* true otherwise.
*/
-bool cma_release(struct cma *cma, struct page *pages, int count)
+bool cma_release(struct cma *cma, const struct page *pages, unsigned int count)
{
unsigned long pfn;