Messages in this thread Patch in this message | | | Date | Fri, 14 Nov 2008 17:47:49 -0500 | From | Mathieu Desnoyers <> | Subject | [patch 16/16] marker_synchronize_unregister->tracepoint_synchronize_unregister |
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Impact: documentation update.
Signed-off-by: Zhaolei <zhaolei@cn.fujitsu.com> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: Ingo Molnar <mingo@elte.hu> CC: Lai Jiangshan <laijs@cn.fujitsu.com> --- Documentation/tracepoints.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6-lttng/Documentation/tracepoints.txt =================================================================== --- linux-2.6-lttng.orig/Documentation/tracepoints.txt 2008-11-14 17:19:21.000000000 -0500 +++ linux-2.6-lttng/Documentation/tracepoints.txt 2008-11-14 17:19:25.000000000 -0500 @@ -71,7 +71,7 @@ Connecting a function (probe) to a trace (function to call) for the specific tracepoint through register_trace_subsys_eventname(). Removing a probe is done through unregister_trace_subsys_eventname(); it will remove the probe. -marker_synchronize_unregister() must be called before the end of the module exit +tracepoint_synchronize_unregister() must be called before the end of the module exit function to make sure there is no caller left using the probe. This, and the fact that preemption is disabled around the probe call, make sure that probe removal and module unload are safe. See the "Probe example" section below for a -- Mathieu Desnoyers OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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