From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- tools/lib/traceevent/plugin_jbd2.c | 75 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 tools/lib/traceevent/plugin_jbd2.c (limited to 'tools/lib/traceevent/plugin_jbd2.c') diff --git a/tools/lib/traceevent/plugin_jbd2.c b/tools/lib/traceevent/plugin_jbd2.c new file mode 100644 index 000000000..5c23d5bd2 --- /dev/null +++ b/tools/lib/traceevent/plugin_jbd2.c @@ -0,0 +1,75 @@ +/* + * Copyright (C) 2010 Red Hat Inc, Steven Rostedt + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * 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 + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ +#include +#include +#include + +#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"); +} -- cgit v1.2.3-54-g00ecf