5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
// SPDX-License-Identifier: LGPL-2.1
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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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#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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