3 * Executes a marker when /proc/marker-example is opened.
5 * (C) Copyright 2007 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
7 * This file is released under the GPLv2.
8 * See the file COPYING for more details.
11 #include <linux/module.h>
12 #include <linux/marker.h>
13 #include <linux/sched.h>
14 #include <linux/proc_fs.h>
16 struct proc_dir_entry
*pentry_example
= NULL
;
18 static int my_open(struct inode
*inode
, struct file
*file
)
22 MARK(subsystem_event
, "%d %s %*.*r", 123, "example string",
23 sizeof(current
), __alignof__(current
), current
);
24 for (i
=0; i
<10; i
++) {
25 MARK(subsystem_eventb
, MARK_NOARGS
);
30 static struct file_operations mark_ops
= {
34 static int example_init(void)
36 printk(KERN_ALERT
"example init\n");
37 pentry_example
= create_proc_entry("marker-example", 0444, NULL
);
39 pentry_example
->proc_fops
= &mark_ops
;
45 static void example_exit(void)
47 printk(KERN_ALERT
"example exit\n");
48 remove_proc_entry("marker-example", NULL
);
51 module_init(example_init
)
52 module_exit(example_exit
)
54 MODULE_LICENSE("GPL");
55 MODULE_AUTHOR("Mathieu Desnoyers");
56 MODULE_DESCRIPTION("Linux Trace Toolkit example");
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