path: root/samples/tracepoints/tracepoint-probe-sample2.c
diff options
authorSteven Rostedt <srostedt@redhat.com>2013-01-25 09:46:36 -0500
committerSteven Rostedt <rostedt@goodmis.org>2013-01-25 11:22:11 -0500
commitd75f717e19fe595e7efbf67de195ada8d89dfbbe (patch)
tree26e00856e0595ee4fa5c54fd5c457d62d86c3ff1 /samples/tracepoints/tracepoint-probe-sample2.c
parentb736f48bda54ec75b7dc9306884c3843f1a78a0a (diff)
tracing: Remove tracepoint sample code
The tracepoint sample code was used to teach developers how to create their own tracepoints. But now the trace_events have been added as a higher level that is used directly by developers today. Only the trace_event code should use the tracepoint interface directly and no new tracepoints should be added. Besides, the example had a race condition with the use of the ->d_name.name dentry field, as pointed out by Al Viro. Best just to remove the code so it wont be used by other developers. Link: http://lkml.kernel.org/r/20130123225523.GY4939@ZenIV.linux.org.uk Cc: Al Viro <viro@ZenIV.linux.org.uk> Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'samples/tracepoints/tracepoint-probe-sample2.c')
1 files changed, 0 insertions, 44 deletions
diff --git a/samples/tracepoints/tracepoint-probe-sample2.c b/samples/tracepoints/tracepoint-probe-sample2.c
deleted file mode 100644
index 9fcf990e5d4..00000000000
--- a/samples/tracepoints/tracepoint-probe-sample2.c
+++ /dev/null
@@ -1,44 +0,0 @@
- * tracepoint-probe-sample2.c
- *
- * 2nd sample tracepoint probes.
- */
-#include <linux/module.h>
-#include <linux/fs.h>
-#include "tp-samples-trace.h"
- * Here the caller only guarantees locking for struct file and struct inode.
- * Locking must therefore be done in the probe to use the dentry.
- */
-static void probe_subsys_event(void *ignore,
- struct inode *inode, struct file *file)
- printk(KERN_INFO "Event is encountered with inode number %lu\n",
- inode->i_ino);
-static int __init tp_sample_trace_init(void)
- int ret;
- ret = register_trace_subsys_event(probe_subsys_event, NULL);
- WARN_ON(ret);
- return 0;
-static void __exit tp_sample_trace_exit(void)
- unregister_trace_subsys_event(probe_subsys_event, NULL);
- tracepoint_synchronize_unregister();
-MODULE_AUTHOR("Mathieu Desnoyers");
-MODULE_DESCRIPTION("Tracepoint Probes Samples");