kernel/trace/trace_output.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 #ifndef __TRACE_EVENTS_H
   3 #define __TRACE_EVENTS_H
   4
   5 #include <linux/trace_seq.h>
   6 #include "trace.h"
   7
   8 extern enum print_line_t
   9 trace_print_bputs_msg_only(struct trace_iterator *iter);
  10 extern enum print_line_t
  11 trace_print_bprintk_msg_only(struct trace_iterator *iter);
  12 extern enum print_line_t
  13 trace_print_printk_msg_only(struct trace_iterator *iter);
  14
  15 extern int
  16 seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
  17                 unsigned long sym_flags);
  18
  19 extern int trace_print_context(struct trace_iterator *iter);
  20 extern int trace_print_lat_context(struct trace_iterator *iter);
  21
  22 extern void trace_event_read_lock(void);
  23 extern void trace_event_read_unlock(void);
  24 extern struct trace_event *ftrace_find_event(int type);
  25
  26 extern enum print_line_t trace_nop_print(struct trace_iterator *iter,
  27                                          int flags, struct trace_event *event);
  28 extern int
  29 trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry);
  30
  31 /* used by module unregistering */
  32 extern int __unregister_trace_event(struct trace_event *event);
  33 extern struct rw_semaphore trace_event_sem;
  34
  35 #define SEQ_PUT_FIELD(s, x)                             \
  36         trace_seq_putmem(s, &(x), sizeof(x))
  37
  38 #define SEQ_PUT_HEX_FIELD(s, x)                         \
  39         trace_seq_putmem_hex(s, &(x), sizeof(x))
  40
  41 #endif
  42