From b9ca93bcd186ec4144df91c619f6084cdad500ec Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Wed, 9 Dec 2020 16:42:04 +0800 Subject: [PATCH] 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 Link: https://lore.kernel.org/r/20201209084205.24062-3-peng.fan@oss.nxp.com Signed-off-by: Michael S. Tsirkin --- tools/virtio/linux/kernel.h | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h index 315e85c..0b49354 100644 --- a/tools/virtio/linux/kernel.h +++ b/tools/virtio/linux/kernel.h @@ -11,6 +11,7 @@ #include #include +#include #include #include #include @@ -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); \ -- 2.7.4