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Commit c25a4a09 authored by Paul Bolle's avatar Paul Bolle Committed by Jiri Kosina
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doc: Remove text on tracepoint samples 



The tracepoint sample code got removed. Remove a few lines on its usage
too.

Acked-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: default avatarRob Landley <rob@landley.net>
Acked-by: default avatarSteven Rostedt <rostedt@goodmis.org>
Signed-off-by: default avatarPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 07f42258

Documentation/trace/tracepoints.txt

+0 −15
Original line number Diff line number Diff line
@@ -81,7 +81,6 @@ 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 sample probe module.



The tracepoint mechanism supports inserting multiple instances of the

same tracepoint, but a single definition must be made of a given
@@ -100,17 +99,3 @@ core kernel image or in modules. 
If the tracepoint has to be used in kernel modules, an

EXPORT_TRACEPOINT_SYMBOL_GPL() or EXPORT_TRACEPOINT_SYMBOL() can be

used to export the defined tracepoints.
 


* Probe / tracepoint example



See the example provided in samples/tracepoints



Compile them with your kernel.  They are built during 'make' (not

'make modules') when CONFIG_SAMPLE_TRACEPOINTS=m.



Run, as root :

modprobe tracepoint-sample (insmod order is not important)

modprobe tracepoint-probe-sample

cat /proc/tracepoint-sample (returns an expected error)

rmmod tracepoint-sample tracepoint-probe-sample

dmesg