Move xen patchset to new version's subdir.

[people/teissler/ipfire-2.x.git] / src / patches / suse-2.6.27.31 / patches.trace / tracepoints-samples-fix-teardown.patch

From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Subject: Tracepoints : Samples fix teardown

Need a tracepoint_synchronize_unregister() before the end of exit() to make sure
every probe callers have exited the non preemptible section and thus are not
executing the probe code anymore.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: Rusty Russell <rusty@rustcorp.com.au>
CC: "Frank Ch. Eigler" <fche@redhat.com>
CC: Ingo Molnar <mingo@elte.hu>
CC: Peter Zijlstra <peterz@infradead.org>
CC: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Jan Blunck <jblunck@suse.de>
---
 samples/tracepoints/tracepoint-probe-sample.c  |    1 +
 samples/tracepoints/tracepoint-probe-sample2.c |    1 +
 2 files changed, 2 insertions(+)

Index: linux-2.6-lttng/samples/tracepoints/tracepoint-probe-sample.c
===================================================================
--- linux-2.6-lttng.orig/samples/tracepoints/tracepoint-probe-sample.c	2008-07-31 09:26:51.000000000 -0400
+++ linux-2.6-lttng/samples/tracepoints/tracepoint-probe-sample.c	2008-07-31 09:26:52.000000000 -0400
@@ -46,6 +46,7 @@ void __exit tp_sample_trace_exit(void)
 {
 	unregister_trace_subsys_eventb(probe_subsys_eventb);
 	unregister_trace_subsys_event(probe_subsys_event);
+	tracepoint_synchronize_unregister();
 }
 
 module_exit(tp_sample_trace_exit);
Index: linux-2.6-lttng/samples/tracepoints/tracepoint-probe-sample2.c
===================================================================
--- linux-2.6-lttng.orig/samples/tracepoints/tracepoint-probe-sample2.c	2008-07-31 09:26:51.000000000 -0400
+++ linux-2.6-lttng/samples/tracepoints/tracepoint-probe-sample2.c	2008-07-31 09:26:52.000000000 -0400
@@ -33,6 +33,7 @@ module_init(tp_sample_trace_init);
 void __exit tp_sample_trace_exit(void)
 {
 	unregister_trace_subsys_event(probe_subsys_event);
+	tracepoint_synchronize_unregister();
 }
 
 module_exit(tp_sample_trace_exit);