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tools/virtio: add krealloc_array 

krealloc_array is used in drivers/vhost/vringh.c, add it to avoid build
failure.

Drop WARN_ON_ONCE, because duplicated with the one in bug.h

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Link: https://lore.kernel.org/r/20201209084205.24062-3-peng.fan@oss.nxp.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Peng Fan 2020-12-09 16:42:04 +08:00 committed by Michael S. Tsirkin
parent 697d154914
commit b9ca93bcd1
1 changed files with 11 additions and 2 deletions
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13
tools/virtio/linux/kernel.h
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@ -11,6 +11,7 @@
#include <linux/compiler.h>
#include <linux/types.h>
#include <linux/overflow.h>
#include <linux/list.h>
#include <linux/printk.h>
#include <linux/bug.h>
@ -117,6 +118,16 @@ static inline void free_page(unsigned long addr)
# define unlikely(x) (__builtin_expect(!!(x), 0))
# endif
static inline void *krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t gfp)
{
size_t bytes;
if (unlikely(check_mul_overflow(new_n, new_size, &bytes)))
return NULL;
return krealloc(p, bytes, gfp);
}
#define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#ifdef DEBUG
#define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
@ -126,8 +137,6 @@ static inline void free_page(unsigned long addr)
#define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#define WARN_ON_ONCE(cond) (unlikely(cond) ? fprintf (stderr, "WARNING\n") : 0)
#define min(x, y) ({ \
typeof(x) _min1 = (x); \
typeof(y) _min2 = (y); \