LXR linux/kernel/trace/trace

   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
   8extern enum print_line_t
   9trace_print_bputs_msg_only(struct trace_iterator *iter);
  10extern enum print_line_t
  11trace_print_bprintk_msg_only(struct trace_iterator *iter);
  12extern enum print_line_t
  13trace_print_printk_msg_only(struct trace_iterator *iter);
  14
  15extern int
  16seq_print_ip_sym(struct trace_seq *s, unsigned long ip,
  17                unsigned long sym_flags);
  18
  19extern int trace_print_context(struct trace_iterator *iter);
  20extern int trace_print_lat_context(struct trace_iterator *iter);
  21
  22extern void trace_event_read_lock(void);
  23extern void trace_event_read_unlock(void);
  24extern struct trace_event *ftrace_find_event(int type);
  25
  26extern enum print_line_t trace_nop_print(struct trace_iterator *iter,
  27                                         int flags, struct trace_event *event);
  28extern int
  29trace_print_lat_fmt(struct trace_seq *s, struct trace_entry *entry);
  30
  31/* used by module unregistering */
  32extern int __unregister_trace_event(struct trace_event *event);
  33extern 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
  43