projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 9504504c SR |
1 | #ifndef _LINUX_TRACE_SEQ_H |
| 2 | #define _LINUX_TRACE_SEQ_H | |
| 3 | ||
| 6d723736 SR |
4 | #include <linux/fs.h> |
| 5 | ||
| 78be6914 WZ |
6 | #include <asm/page.h> |
| 7 | ||
| 9504504c SR |
8 | /* |
| 9 | * Trace sequences are used to allow a function to call several other functions | |
| 6d3f1e12 | 10 | * to create a string of data to use (up to a max of PAGE_SIZE). |
| 9504504c SR |
11 | */ |
| 12 | ||
| 13 | struct trace_seq { | |
| 14 | unsigned char buffer[PAGE_SIZE]; | |
| 15 | unsigned int len; | |
| 16 | unsigned int readpos; | |
| d184b31c | 17 | int full; |
| 9504504c SR |
18 | }; |
| 19 | ||
| 20 | static inline void | |
| 21 | trace_seq_init(struct trace_seq *s) | |
| 22 | { | |
| 23 | s->len = 0; | |
| 24 | s->readpos = 0; | |
| d184b31c | 25 | s->full = 0; |
| 9504504c SR |
26 | } |
| 27 | ||
| 28 | /* | |
| 29 | * Currently only defined when tracing is enabled. | |
| 30 | */ | |
| 31 | #ifdef CONFIG_TRACING | |
| b9075fa9 JP |
32 | extern __printf(2, 3) |
| 33 | int trace_seq_printf(struct trace_seq *s, const char *fmt, ...); | |
| 34 | extern __printf(2, 0) | |
| 35 | int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args); | |
| 9504504c SR |
36 | extern int |
| 37 | trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary); | |
| a63ce5b3 | 38 | extern int trace_print_seq(struct seq_file *m, struct trace_seq *s); |
| 9504504c SR |
39 | extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf, |
| 40 | size_t cnt); | |
| 41 | extern int trace_seq_puts(struct trace_seq *s, const char *str); | |
| 42 | extern int trace_seq_putc(struct trace_seq *s, unsigned char c); | |
| 43 | extern int trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len); | |
| 44 | extern int trace_seq_putmem_hex(struct trace_seq *s, const void *mem, | |
| 45 | size_t len); | |
| 46 | extern void *trace_seq_reserve(struct trace_seq *s, size_t len); | |
| 47 | extern int trace_seq_path(struct trace_seq *s, struct path *path); | |
| 48 | ||
| 49 | #else /* CONFIG_TRACING */ | |
| 50 | static inline int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) | |
| 9504504c SR |
51 | { |
| 52 | return 0; | |
| 53 | } | |
| 54 | static inline int | |
| 55 | trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary) | |
| 56 | { | |
| 57 | return 0; | |
| 58 | } | |
| 59 | ||
| a63ce5b3 | 60 | static inline int trace_print_seq(struct seq_file *m, struct trace_seq *s) |
| 9504504c | 61 | { |
| a63ce5b3 | 62 | return 0; |
| 9504504c SR |
63 | } |
| 64 | static inline ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf, | |
| 65 | size_t cnt) | |
| 66 | { | |
| 67 | return 0; | |
| 68 | } | |
| 69 | static inline int trace_seq_puts(struct trace_seq *s, const char *str) | |
| 70 | { | |
| 71 | return 0; | |
| 72 | } | |
| 23de29de | 73 | static inline int trace_seq_putc(struct trace_seq *s, unsigned char c) |
| 9504504c SR |
74 | { |
| 75 | return 0; | |
| 76 | } | |
| 77 | static inline int | |
| 78 | trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len) | |
| 79 | { | |
| 80 | return 0; | |
| 81 | } | |
| 82 | static inline int trace_seq_putmem_hex(struct trace_seq *s, const void *mem, | |
| 83 | size_t len) | |
| 84 | { | |
| 85 | return 0; | |
| 86 | } | |
| 87 | static inline void *trace_seq_reserve(struct trace_seq *s, size_t len) | |
| 88 | { | |
| 89 | return NULL; | |
| 90 | } | |
| 91 | static inline int trace_seq_path(struct trace_seq *s, struct path *path) | |
| 92 | { | |
| 93 | return 0; | |
| 94 | } | |
| 95 | #endif /* CONFIG_TRACING */ | |
| 96 | ||
| 97 | #endif /* _LINUX_TRACE_SEQ_H */ |