mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-01-24 01:09:38 -05:00
Code Activity

lib: bitmap: Introduce node-aware alloc API

Browse source 
Expose new node-aware API for bitmap allocation:
bitmap_alloc_node() / bitmap_zalloc_node().

Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Tariq Toukan 2020-12-30 11:41:52 +02:00 • committed by Saeed Mahameed
parent 06338ceff9
commit 7529cc7fbd
2 changed files with 15 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
include/linux/bitmap.h
View file

@ -123,6 +123,8 @@ struct device;
*/ */
unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags); unsigned long *bitmap_alloc(unsigned int nbits, gfp_t flags);
unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags); unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags);
unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node);
unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node);
void bitmap_free(const unsigned long *bitmap); void bitmap_free(const unsigned long *bitmap);
/* Managed variants of the above. */ /* Managed variants of the above. */

13
lib/bitmap.c
View file

@ -1398,6 +1398,19 @@ unsigned long *bitmap_zalloc(unsigned int nbits, gfp_t flags)
} }
EXPORT_SYMBOL(bitmap_zalloc); EXPORT_SYMBOL(bitmap_zalloc);
unsigned long *bitmap_alloc_node(unsigned int nbits, gfp_t flags, int node)
{
return kmalloc_array_node(BITS_TO_LONGS(nbits), sizeof(unsigned long),
flags, node);
}
EXPORT_SYMBOL(bitmap_alloc_node);
unsigned long *bitmap_zalloc_node(unsigned int nbits, gfp_t flags, int node)
{
return bitmap_alloc_node(nbits, flags | __GFP_ZERO, node);
}
EXPORT_SYMBOL(bitmap_zalloc_node);
void bitmap_free(const unsigned long *bitmap) void bitmap_free(const unsigned long *bitmap)
{ {
kfree(bitmap); kfree(bitmap);