diff options
Diffstat (limited to 'mm/vmalloc.c')
-rw-r--r-- | mm/vmalloc.c | 46 |
1 files changed, 44 insertions, 2 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index f492c774fa7..a3d66b3dc5c 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -1596,6 +1596,13 @@ void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot) } EXPORT_SYMBOL(__vmalloc); +static inline void *__vmalloc_node_flags(unsigned long size, + int node, gfp_t flags) +{ + return __vmalloc_node(size, 1, flags, PAGE_KERNEL, + node, __builtin_return_address(0)); +} + /** * vmalloc - allocate virtually contiguous memory * @size: allocation size @@ -1607,12 +1614,28 @@ EXPORT_SYMBOL(__vmalloc); */ void *vmalloc(unsigned long size) { - return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL, - -1, __builtin_return_address(0)); + return __vmalloc_node_flags(size, -1, GFP_KERNEL | __GFP_HIGHMEM); } EXPORT_SYMBOL(vmalloc); /** + * vzalloc - allocate virtually contiguous memory with zero fill + * @size: allocation size + * Allocate enough pages to cover @size from the page level + * allocator and map them into contiguous kernel virtual space. + * The memory allocated is set to zero. + * + * For tight control over page level allocator and protection flags + * use __vmalloc() instead. + */ +void *vzalloc(unsigned long size) +{ + return __vmalloc_node_flags(size, -1, + GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO); +} +EXPORT_SYMBOL(vzalloc); + +/** * vmalloc_user - allocate zeroed virtually contiguous memory for userspace * @size: allocation size * @@ -1653,6 +1676,25 @@ void *vmalloc_node(unsigned long size, int node) } EXPORT_SYMBOL(vmalloc_node); +/** + * vzalloc_node - allocate memory on a specific node with zero fill + * @size: allocation size + * @node: numa node + * + * Allocate enough pages to cover @size from the page level + * allocator and map them into contiguous kernel virtual space. + * The memory allocated is set to zero. + * + * For tight control over page level allocator and protection flags + * use __vmalloc_node() instead. + */ +void *vzalloc_node(unsigned long size, int node) +{ + return __vmalloc_node_flags(size, node, + GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO); +} +EXPORT_SYMBOL(vzalloc_node); + #ifndef PAGE_KERNEL_EXEC # define PAGE_KERNEL_EXEC PAGE_KERNEL #endif |