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 void trace_seq_print_sym(struct trace_seq *s, unsigned long address, bool offset);
  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_trace_event(struct trace_event *event);
  34 extern struct rw_semaphore trace_event_sem;
  35
  36 #define SEQ_PUT_FIELD(s, x)                             \
  37         trace_seq_putmem(s, &(x), sizeof(x))
  38
  39 #define SEQ_PUT_HEX_FIELD(s, x)                         \
  40         trace_seq_putmem_hex(s, &(x), sizeof(x))
  41
  42 #endif
  43