diff options
Diffstat (limited to 'samples/tracepoints/tracepoint-probe-sample.c')
-rw-r--r-- | samples/tracepoints/tracepoint-probe-sample.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/samples/tracepoints/tracepoint-probe-sample.c b/samples/tracepoints/tracepoint-probe-sample.c deleted file mode 100644 index 744c0b9652a7..000000000000 --- a/samples/tracepoints/tracepoint-probe-sample.c +++ /dev/null | |||
@@ -1,57 +0,0 @@ | |||
1 | /* | ||
2 | * tracepoint-probe-sample.c | ||
3 | * | ||
4 | * sample tracepoint probes. | ||
5 | */ | ||
6 | |||
7 | #include <linux/module.h> | ||
8 | #include <linux/file.h> | ||
9 | #include <linux/dcache.h> | ||
10 | #include "tp-samples-trace.h" | ||
11 | |||
12 | /* | ||
13 | * Here the caller only guarantees locking for struct file and struct inode. | ||
14 | * Locking must therefore be done in the probe to use the dentry. | ||
15 | */ | ||
16 | static void probe_subsys_event(void *ignore, | ||
17 | struct inode *inode, struct file *file) | ||
18 | { | ||
19 | path_get(&file->f_path); | ||
20 | dget(file->f_path.dentry); | ||
21 | printk(KERN_INFO "Event is encountered with filename %s\n", | ||
22 | file->f_path.dentry->d_name.name); | ||
23 | dput(file->f_path.dentry); | ||
24 | path_put(&file->f_path); | ||
25 | } | ||
26 | |||
27 | static void probe_subsys_eventb(void *ignore) | ||
28 | { | ||
29 | printk(KERN_INFO "Event B is encountered\n"); | ||
30 | } | ||
31 | |||
32 | static int __init tp_sample_trace_init(void) | ||
33 | { | ||
34 | int ret; | ||
35 | |||
36 | ret = register_trace_subsys_event(probe_subsys_event, NULL); | ||
37 | WARN_ON(ret); | ||
38 | ret = register_trace_subsys_eventb(probe_subsys_eventb, NULL); | ||
39 | WARN_ON(ret); | ||
40 | |||
41 | return 0; | ||
42 | } | ||
43 | |||
44 | module_init(tp_sample_trace_init); | ||
45 | |||
46 | static void __exit tp_sample_trace_exit(void) | ||
47 | { | ||
48 | unregister_trace_subsys_eventb(probe_subsys_eventb, NULL); | ||
49 | unregister_trace_subsys_event(probe_subsys_event, NULL); | ||
50 | tracepoint_synchronize_unregister(); | ||
51 | } | ||
52 | |||
53 | module_exit(tp_sample_trace_exit); | ||
54 | |||
55 | MODULE_LICENSE("GPL"); | ||
56 | MODULE_AUTHOR("Mathieu Desnoyers"); | ||
57 | MODULE_DESCRIPTION("Tracepoint Probes Samples"); | ||