diff options
| author | Peng Fan <peng.fan@nxp.com> | 2020-12-09 09:42:04 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-12-18 22:14:30 +0100 |
| commit | b9ca93bcd186ec4144df91c619f6084cdad500ec (patch) | |
| tree | ee23e631e2f6e67e43d0f7fe172fa70ba110b0e3 /tools/virtio | |
| parent | tools/virtio: include asm/bug.h (diff) | |
| download | linux-b9ca93bcd186ec4144df91c619f6084cdad500ec.tar.xz linux-b9ca93bcd186ec4144df91c619f6084cdad500ec.zip | |
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>
Diffstat (limited to 'tools/virtio')
| -rw-r--r-- | tools/virtio/linux/kernel.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h index 315e85cabeda..0b493542e61a 100644 --- a/tools/virtio/linux/kernel.h +++ b/tools/virtio/linux/kernel.h @@ -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); \ |