1 #ifndef __TRACE_EVENTS_H 2 #define __TRACE_EVENTS_H 3 4 #include <linux/trace_seq.h> 5 #include "trace.h" 6 7 extern enum print_line_t 8 trace_print_bputs_msg_only(struct trace_iterator *iter); 9 extern enum print_line_t 10 trace_print_bprintk_msg_only(struct trace_iterator *iter); 11 extern enum print_line_t 12 trace_print_printk_msg_only(struct trace_iterator *iter); 13 14 extern int 15 seq_print_ip_sym(struct trace_seq *s, unsigned long ip, 16 unsigned long sym_flags); 17 extern int seq_print_userip_objs(const struct userstack_entry *entry, 18 struct trace_seq *s, unsigned long sym_flags); 19 extern int seq_print_user_ip(struct trace_seq *s, struct mm_struct *mm, 20 unsigned long ip, unsigned long sym_flags); 21 22 extern int trace_print_context(struct trace_iterator *iter); 23 extern int trace_print_lat_context(struct trace_iterator *iter); 24 25 extern void trace_event_read_lock(void); 26 extern void trace_event_read_unlock(void); 27 extern struct trace_event *ftrace_find_event(int type); 28 29 extern enum print_line_t trace_nop_print(struct trace_iterator *iter, 30 int flags, struct trace_event *event); 31 extern int 32 trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry); 33 34 /* used by module unregistering */ 35 extern int __unregister_ftrace_event(struct trace_event *event); 36 extern struct rw_semaphore trace_event_sem; 37 38 #define MAX_MEMHEX_BYTES 8 39 #define HEX_CHARS (MAX_MEMHEX_BYTES*2 + 1) 40 41 #define SEQ_PUT_FIELD_RET(s, x) \ 42 do { \ 43 if (!trace_seq_putmem(s, &(x), sizeof(x))) \ 44 return TRACE_TYPE_PARTIAL_LINE; \ 45 } while (0) 46 47 #define SEQ_PUT_HEX_FIELD_RET(s, x) \ 48 do { \ 49 BUILD_BUG_ON(sizeof(x) > MAX_MEMHEX_BYTES); \ 50 if (!trace_seq_putmem_hex(s, &(x), sizeof(x))) \ 51 return TRACE_TYPE_PARTIAL_LINE; \ 52 } while (0) 53 54 #endif 55 56