1 #ifndef _LINUX_TRACE_SEQ_H
2 #define _LINUX_TRACE_SEQ_H
7 * Trace sequences are used to allow a function to call several other functions
8 * to create a string of data to use (up to a max of PAGE_SIZE.
12 unsigned char buffer[PAGE_SIZE];
18 trace_seq_init(struct trace_seq *s)
25 * Currently only defined when tracing is enabled.
28 extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
29 __attribute__ ((format (printf, 2, 3)));
31 trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary);
32 extern void trace_print_seq(struct seq_file *m, struct trace_seq *s);
33 extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
35 extern int trace_seq_puts(struct trace_seq *s, const char *str);
36 extern int trace_seq_putc(struct trace_seq *s, unsigned char c);
37 extern int trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len);
38 extern int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
40 extern void *trace_seq_reserve(struct trace_seq *s, size_t len);
41 extern int trace_seq_path(struct trace_seq *s, struct path *path);
43 #else /* CONFIG_TRACING */
44 static inline int trace_seq_printf(struct trace_seq *s, const char *fmt, ...)
45 __attribute__ ((format (printf, 2, 3)))
50 trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary)
55 static inline void trace_print_seq(struct seq_file *m, struct trace_seq *s)
58 static inline ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf,
63 static inline int trace_seq_puts(struct trace_seq *s, const char *str)
67 static inline int trace_seq_putc(struct trace_seq *s, unsigned char c);
72 trace_seq_putmem(struct trace_seq *s, const void *mem, size_t len)
76 static inline int trace_seq_putmem_hex(struct trace_seq *s, const void *mem,
81 static inline void *trace_seq_reserve(struct trace_seq *s, size_t len)
85 static inline int trace_seq_path(struct trace_seq *s, struct path *path)
89 #endif /* CONFIG_TRACING */
91 #endif /* _LINUX_TRACE_SEQ_H */