1 #ifndef __TRACE_EVENTS_H 2 #define __TRACE_EVENTS_H 3 4 #include "trace.h" 5 6 typedef enum print_line_t (*trace_print_func)(struct trace_iterator *iter, 7 int flags); 8 9 struct trace_event { 10 struct hlist_node node; 11 int type; 12 trace_print_func trace; 13 trace_print_func raw; 14 trace_print_func hex; 15 trace_print_func binary; 16 }; 17 18 extern enum print_line_t 19 trace_print_bprintk_msg_only(struct trace_iterator *iter); 20 extern enum print_line_t 21 trace_print_printk_msg_only(struct trace_iterator *iter); 22 23 extern void trace_print_seq(struct seq_file *m, struct trace_seq *s); 24 25 extern int trace_seq_printf(struct trace_seq *s, const char *fmt, ...) 26 __attribute__ ((format (printf, 2, 3))); 27 extern int 28 trace_seq_bprintf(struct trace_seq *s, const char *fmt, const u32 *binary); 29 extern int 30 seq_print_ip_sym(struct trace_seq *s, unsigned long ip, 31 unsigned long sym_flags); 32 extern ssize_t trace_seq_to_user(struct trace_seq *s, char __user *ubuf, 33 size_t cnt); 34 int trace_seq_puts(struct trace_seq *s, const char *str); 35 int trace_seq_putc(struct trace_seq *s, unsigned char c); 36 int trace_seq_putmem(struct trace_seq *s, void *mem, size_t len); 37 int trace_seq_putmem_hex(struct trace_seq *s, void *mem, size_t len); 38 int trace_seq_path(struct trace_seq *s, struct path *path); 39 int seq_print_userip_objs(const struct userstack_entry *entry, 40 struct trace_seq *s, unsigned long sym_flags); 41 int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm, 42 unsigned long ip, unsigned long sym_flags); 43 44 int trace_print_context(struct trace_iterator *iter); 45 int trace_print_lat_context(struct trace_iterator *iter); 46 47 struct trace_event *ftrace_find_event(int type); 48 int register_ftrace_event(struct trace_event *event); 49 int unregister_ftrace_event(struct trace_event *event); 50 51 enum print_line_t trace_nop_print(struct trace_iterator *iter, int flags); 52 53 #define MAX_MEMHEX_BYTES 8 54 #define HEX_CHARS (MAX_MEMHEX_BYTES*2 + 1) 55 56 #define SEQ_PUT_FIELD_RET(s, x) \ 57 do { \ 58 if (!trace_seq_putmem(s, &(x), sizeof(x))) \ 59 return TRACE_TYPE_PARTIAL_LINE; \ 60 } while (0) 61 62 #define SEQ_PUT_HEX_FIELD_RET(s, x) \ 63 do { \ 64 BUILD_BUG_ON(sizeof(x) > MAX_MEMHEX_BYTES); \ 65 if (!trace_seq_putmem_hex(s, &(x), sizeof(x))) \ 66 return TRACE_TYPE_PARTIAL_LINE; \ 67 } while (0) 68 69 #endif 70 71