1 #ifndef _LINUX_TRACE_SEQ_H
2 #define _LINUX_TRACE_SEQ_H
9 * Trace sequences are used to allow a function to call several other functions
10 * to create a string of data to use (up to a max of PAGE_SIZE.
14 unsigned char buffer[PAGE_SIZE];
20 trace_seq_init(struct trace_seq *s)
27 * Currently only defined when tracing is enabled.
30 extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
31 __attribute__ ((format (printf, 2, 3)));
32 extern int trace_seq_vprintf(struct trace_seq *s, const char *fmt, va_list args)
33 __attribute__ ((format (printf, 2, 0)));
35 trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary);
36 extern void trace_print_seq(struct seq_file *m, struct trace_seq *s);
37 extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
39 extern int trace_seq_puts(struct trace_seq *s, const char *str);
40 extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
41 extern int trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len);
42 extern int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
44 extern void *trace_seq_reserve(struct trace_seq *s, size_t len);
45 extern int trace_seq_path(struct trace_seq *s, struct path *path);
47 #else /* CONFIG_TRACING */
48 static inline int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
53 trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary)
58 static inline void trace_print_seq(struct seq_file *m, struct trace_seq *s)
61 static inline ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
66 static inline int trace_seq_puts(struct trace_seq *s, const char *str)
70 static inline int trace_seq_putc(struct trace_seq *s, unsigned char c)
75 trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len)
79 static inline int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
84 static inline void *trace_seq_reserve(struct trace_seq *s, size_t len)
88 static inline int trace_seq_path(struct trace_seq *s, struct path *path)
92 #endif /* CONFIG_TRACING */
94 #endif /* _LINUX_TRACE_SEQ_H */