tracepoints: API doc update to tracepoint_probe_register() return value (3bbc8db3) · Commits · 戴 / test

Describe the return values of tracepoint_probe_register(), including -ENODEV added by commit: Author: Steven Rostedt <rostedt@goodmis.org> tracing: Warn if a tracepoint is not set via debugfs Link: http://lkml.kernel.org/r/1394499898-1537-2-git-send-email-mathieu.desnoyers@efficios.com CC: Ingo Molnar <mingo@kernel.org> CC: Frederic Weisbecker <fweisbec@gmail.com> CC: Andrew Morton <akpm@linux-foundation.org> Signed-off-by:

Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by:

Steven Rostedt <rostedt@goodmis.org>

kernel/tracepoint.c

+11 −1

Original line number	Diff line number	Diff line
		@@ -378,7 +378,17 @@ tracepoint_add_probe(const char name, void probe, void *data)
		* @probe: probe handler
		* @data: probe private data
		*
		* Returns 0 if ok, error value on error.
		* Returns:
		* - 0 if the probe was successfully registered, and tracepoint
		* callsites are currently loaded for that probe,
		* - -ENODEV if the probe was successfully registered, but no tracepoint
		* callsite is currently loaded for that probe,
		* - other negative error value on error.
		*
		* When tracepoint_probe_register() returns either 0 or -ENODEV,
		* parameters @name, @probe, and @data may be used by the tracepoint
		* infrastructure until the probe is unregistered.
		*
		* The probe address must at least be aligned on the architecture pointer size.
		*/
		int tracepoint_probe_register(const char name, void probe, void *data)

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