forked from luck/tmp_suning_uos_patched
30992c97ae
Add mm/util.c for functions common between SLAB and SLOB. Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
40 lines
771 B
C
40 lines
771 B
C
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <linux/module.h>
|
|
|
|
/**
|
|
* kzalloc - allocate memory. The memory is set to zero.
|
|
* @size: how many bytes of memory are required.
|
|
* @flags: the type of memory to allocate.
|
|
*/
|
|
void *kzalloc(size_t size, gfp_t flags)
|
|
{
|
|
void *ret = kmalloc(size, flags);
|
|
if (ret)
|
|
memset(ret, 0, size);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(kzalloc);
|
|
|
|
/*
|
|
* kstrdup - allocate space for and copy an existing string
|
|
*
|
|
* @s: the string to duplicate
|
|
* @gfp: the GFP mask used in the kmalloc() call when allocating memory
|
|
*/
|
|
char *kstrdup(const char *s, gfp_t gfp)
|
|
{
|
|
size_t len;
|
|
char *buf;
|
|
|
|
if (!s)
|
|
return NULL;
|
|
|
|
len = strlen(s) + 1;
|
|
buf = kmalloc(len, gfp);
|
|
if (buf)
|
|
memcpy(buf, s, len);
|
|
return buf;
|
|
}
|
|
EXPORT_SYMBOL(kstrdup);
|