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