diff options
Diffstat (limited to 'include/linux/kernel.h')
| -rw-r--r-- | include/linux/kernel.h | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 144b615f3a89..45353d757cd0 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -41,6 +41,16 @@ extern const char linux_proc_banner[]; #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y)) +/** + * upper_32_bits - return bits 32-63 of a number + * @n: the number we're accessing + * + * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress + * the "right shift count >= width of type" warning when that quantity is + * 32-bits. + */ +#define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) + #define KERN_EMERG "<0>" /* system is unusable */ #define KERN_ALERT "<1>" /* action must be taken immediately */ #define KERN_CRIT "<2>" /* critical conditions */ @@ -203,6 +213,17 @@ extern enum system_states { extern void dump_stack(void); +enum { + DUMP_PREFIX_NONE, + DUMP_PREFIX_ADDRESS, + DUMP_PREFIX_OFFSET +}; +extern void hex_dump_to_buffer(const void *buf, size_t len, char *linebuf, + size_t linebuflen); +extern void print_hex_dump(const char *level, int prefix_type, + void *buf, size_t len); +#define hex_asc(x) "0123456789abcdef"[x] + #ifdef DEBUG /* If you are writing a driver, please use dev_dbg instead */ #define pr_debug(fmt,arg...) \ @@ -289,8 +310,8 @@ static inline int __attribute__ ((format (printf, 1, 2))) pr_debug(const char * * */ #define container_of(ptr, type, member) ({ \ - const typeof( ((type *)0)->member ) *__mptr = (ptr); \ - (type *)( (char *)__mptr - offsetof(type,member) );}) + const typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) );}) /* * Check at compile time that something is of a particular type. |