77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
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/*
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* Copyright (C) 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License (not later!)
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "event-parse.h"
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#include "trace-seq.h"
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#define MINORBITS 20
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#define MINORMASK ((1U << MINORBITS) - 1)
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#define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS))
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#define MINOR(dev) ((unsigned int) ((dev) & MINORMASK))
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static unsigned long long
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process_jbd2_dev_to_name(struct trace_seq *s, unsigned long long *args)
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{
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unsigned int dev = args[0];
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trace_seq_printf(s, "%d:%d", MAJOR(dev), MINOR(dev));
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return 0;
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}
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static unsigned long long
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process_jiffies_to_msecs(struct trace_seq *s, unsigned long long *args)
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{
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unsigned long long jiffies = args[0];
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trace_seq_printf(s, "%lld", jiffies);
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return jiffies;
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}
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int TEP_PLUGIN_LOADER(struct tep_handle *tep)
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{
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tep_register_print_function(tep,
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process_jbd2_dev_to_name,
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TEP_FUNC_ARG_STRING,
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"jbd2_dev_to_name",
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TEP_FUNC_ARG_INT,
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TEP_FUNC_ARG_VOID);
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tep_register_print_function(tep,
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process_jiffies_to_msecs,
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TEP_FUNC_ARG_LONG,
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"jiffies_to_msecs",
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TEP_FUNC_ARG_LONG,
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TEP_FUNC_ARG_VOID);
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return 0;
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}
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void TEP_PLUGIN_UNLOADER(struct tep_handle *tep)
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{
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tep_unregister_print_function(tep, process_jbd2_dev_to_name,
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"jbd2_dev_to_name");
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tep_unregister_print_function(tep, process_jiffies_to_msecs,
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"jiffies_to_msecs");
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}
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