5113f6f70
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kernel add
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/*
* Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* 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"
#define MINORBITS 20
#define MINORMASK ((1U << MINORBITS) - 1)
#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
static unsigned long long
process_jbd2_dev_to_name(struct trace_seq *s, unsigned long long *args)
{
unsigned int dev = args[0];
trace_seq_printf(s, "%d:%d", MAJOR(dev), MINOR(dev));
return 0;
}
static unsigned long long
process_jiffies_to_msecs(struct trace_seq *s, unsigned long long *args)
{
unsigned long long jiffies = args[0];
trace_seq_printf(s, "%lld", jiffies);
return jiffies;
}
int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
{
pevent_register_print_function(pevent,
process_jbd2_dev_to_name,
PEVENT_FUNC_ARG_STRING,
"jbd2_dev_to_name",
PEVENT_FUNC_ARG_INT,
PEVENT_FUNC_ARG_VOID);
pevent_register_print_function(pevent,
process_jiffies_to_msecs,
PEVENT_FUNC_ARG_LONG,
"jiffies_to_msecs",
PEVENT_FUNC_ARG_LONG,
PEVENT_FUNC_ARG_VOID);
return 0;
}
void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
{
pevent_unregister_print_function(pevent, process_jbd2_dev_to_name,
"jbd2_dev_to_name");
pevent_unregister_print_function(pevent, process_jiffies_to_msecs,
"jiffies_to_msecs");
}
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