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