tools/lib/traceevent/plugins/plugin_hrtimer.c

   1 // SPDX-License-Identifier: LGPL-2.1
   2 /*
   3  * Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
   4  * Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net>
   5  */
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 #include "event-parse.h"
  11 #include "trace-seq.h"
  12
  13 static int timer_expire_handler(struct trace_seq *s,
  14                                 struct tep_record *record,
  15                                 struct tep_event *event, void *context)
  16 {
  17         trace_seq_printf(s, "hrtimer=");
  18
  19         if (tep_print_num_field(s, "0x%llx", event, "timer",
  20                                 record, 0) == -1)
  21                 tep_print_num_field(s, "0x%llx", event, "hrtimer",
  22                                     record, 1);
  23
  24         trace_seq_printf(s, " now=");
  25
  26         tep_print_num_field(s, "%llu", event, "now", record, 1);
  27
  28         tep_print_func_field(s, " function=%s", event, "function",
  29                                 record, 0);
  30         return 0;
  31 }
  32
  33 static int timer_start_handler(struct trace_seq *s,
  34                                struct tep_record *record,
  35                                struct tep_event *event, void *context)
  36 {
  37         trace_seq_printf(s, "hrtimer=");
  38
  39         if (tep_print_num_field(s, "0x%llx", event, "timer",
  40                                 record, 0) == -1)
  41                 tep_print_num_field(s, "0x%llx", event, "hrtimer",
  42                                     record, 1);
  43
  44         tep_print_func_field(s, " function=%s", event, "function",
  45                              record, 0);
  46
  47         trace_seq_printf(s, " expires=");
  48         tep_print_num_field(s, "%llu", event, "expires", record, 1);
  49
  50         trace_seq_printf(s, " softexpires=");
  51         tep_print_num_field(s, "%llu", event, "softexpires", record, 1);
  52         return 0;
  53 }
  54
  55 int TEP_PLUGIN_LOADER(struct tep_handle *tep)
  56 {
  57         tep_register_event_handler(tep, -1,
  58                                    "timer", "hrtimer_expire_entry",
  59                                    timer_expire_handler, NULL);
  60
  61         tep_register_event_handler(tep, -1, "timer", "hrtimer_start",
  62                                    timer_start_handler, NULL);
  63         return 0;
  64 }
  65
  66 void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
  67 {
  68         tep_unregister_event_handler(tep, -1,
  69                                      "timer", "hrtimer_expire_entry",
  70                                      timer_expire_handler, NULL);
  71
  72         tep_unregister_event_handler(tep, -1, "timer", "hrtimer_start",
  73                                      timer_start_handler, NULL);
  74 }