diff options
Diffstat (limited to 'tools/virtio/linux/kernel.h')
| -rw-r--r-- | tools/virtio/linux/kernel.h | 58 |
1 files changed, 45 insertions, 13 deletions
diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h index fba705963968..6702008f7f5c 100644 --- a/tools/virtio/linux/kernel.h +++ b/tools/virtio/linux/kernel.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef KERNEL_H #define KERNEL_H #include <stdbool.h> @@ -8,7 +9,12 @@ #include <assert.h> #include <stdarg.h> +#include <linux/compiler.h> +#include "../../../include/linux/container_of.h" +#include <linux/log2.h> #include <linux/types.h> +#include <linux/overflow.h> +#include <linux/list.h> #include <linux/printk.h> #include <linux/bug.h> #include <errno.h> @@ -19,9 +25,15 @@ #define PAGE_SIZE getpagesize() #define PAGE_MASK (~(PAGE_SIZE-1)) +#define PAGE_ALIGN(x) ((x + PAGE_SIZE - 1) & PAGE_MASK) + +/* generic data direction definitions */ +#define READ 0 +#define WRITE 1 typedef unsigned long long dma_addr_t; typedef size_t __kernel_size_t; +typedef unsigned int __wsum; struct page { unsigned long long dummy; @@ -38,13 +50,6 @@ struct page { #define __printf(a,b) __attribute__((format(printf,a,b))) -typedef enum { - GFP_KERNEL, - GFP_ATOMIC, - __GFP_HIGHMEM, - __GFP_HIGH -} gfp_t; - #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end; @@ -54,6 +59,23 @@ static inline void *kmalloc(size_t s, gfp_t gfp) return __kmalloc_fake; return malloc(s); } +static inline void *kmalloc_array(unsigned n, size_t s, gfp_t gfp) +{ + return kmalloc(n * s, gfp); +} + +static inline void *kzalloc(size_t s, gfp_t gfp) +{ + void *p = kmalloc(s, gfp); + + memset(p, 0, s); + return p; +} + +static inline void *alloc_pages_exact(size_t s, gfp_t gfp) +{ + return kmalloc(s, gfp); +} static inline void kfree(void *p) { @@ -62,6 +84,11 @@ static inline void kfree(void *p) free(p); } +static inline void free_pages_exact(void *p, size_t s) +{ + kfree(p); +} + static inline void *krealloc(void *p, size_t s, gfp_t gfp) { return realloc(p, s); @@ -81,12 +108,6 @@ static inline void free_page(unsigned long addr) free((void *)addr); } -#define container_of(ptr, type, member) ({ \ - const typeof( ((type *)0)->member ) *__mptr = (ptr); \ - (type *)( (char *)__mptr - offsetof(type,member) );}) - -#define uninitialized_var(x) x = x - # ifndef likely # define likely(x) (__builtin_expect(!!(x), 1)) # endif @@ -94,6 +115,16 @@ 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__) @@ -102,6 +133,7 @@ static inline void free_page(unsigned long addr) #endif #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) +#define dev_warn_once(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) #define min(x, y) ({ \ typeof(x) _min1 = (x); \ |