https://github.com/torvalds/linux
Tip revision: 2595646791c319cadfdbf271563aac97d0843dc7 authored by Linus Torvalds on 02 December 2018, 23:07:55 UTC
Linux 4.20-rc5
Linux 4.20-rc5
Tip revision: 2595646
plugin_hrtimer.c
/*
* Copyright (C) 2009 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
* Copyright (C) 2009 Johannes Berg <johannes@sipsolutions.net>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License (not later!)
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, see <http://www.gnu.org/licenses>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "event-parse.h"
#include "trace-seq.h"
static int timer_expire_handler(struct trace_seq *s,
struct tep_record *record,
struct tep_event_format *event, void *context)
{
trace_seq_printf(s, "hrtimer=");
if (tep_print_num_field(s, "0x%llx", event, "timer",
record, 0) == -1)
tep_print_num_field(s, "0x%llx", event, "hrtimer",
record, 1);
trace_seq_printf(s, " now=");
tep_print_num_field(s, "%llu", event, "now", record, 1);
tep_print_func_field(s, " function=%s", event, "function",
record, 0);
return 0;
}
static int timer_start_handler(struct trace_seq *s,
struct tep_record *record,
struct tep_event_format *event, void *context)
{
trace_seq_printf(s, "hrtimer=");
if (tep_print_num_field(s, "0x%llx", event, "timer",
record, 0) == -1)
tep_print_num_field(s, "0x%llx", event, "hrtimer",
record, 1);
tep_print_func_field(s, " function=%s", event, "function",
record, 0);
trace_seq_printf(s, " expires=");
tep_print_num_field(s, "%llu", event, "expires", record, 1);
trace_seq_printf(s, " softexpires=");
tep_print_num_field(s, "%llu", event, "softexpires", record, 1);
return 0;
}
int TEP_PLUGIN_LOADER(struct tep_handle *pevent)
{
tep_register_event_handler(pevent, -1,
"timer", "hrtimer_expire_entry",
timer_expire_handler, NULL);
tep_register_event_handler(pevent, -1, "timer", "hrtimer_start",
timer_start_handler, NULL);
return 0;
}
void TEP_PLUGIN_UNLOADER(struct tep_handle *pevent)
{
tep_unregister_event_handler(pevent, -1,
"timer", "hrtimer_expire_entry",
timer_expire_handler, NULL);
tep_unregister_event_handler(pevent, -1, "timer", "hrtimer_start",
timer_start_handler, NULL);
}