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Documentation/trace/uprobetracer.txt: fix incorrect examples

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Current uprobetracer examples don't work as they use an incorrect syntax
- if no event name is specified then 'p/r' must not be followed by a
  colon
- if no event name is specified then the default event name will have a
  'p_' prefix, so use that in the '-' example as well

Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Marcin Nowakowski 2016-10-06 09:52:12 +02:00 committed by Jonathan Corbet
parent 58af04dff7
commit 7058763b3f
1 changed files with 3 additions and 3 deletions
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Documentation/trace/uprobetracer.txt
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@ -76,15 +76,15 @@ Usage examples
* Add a probe as a new uprobe event, write a new definition to uprobe_events * Add a probe as a new uprobe event, write a new definition to uprobe_events
as below: (sets a uprobe at an offset of 0x4245c0 in the executable /bin/bash) as below: (sets a uprobe at an offset of 0x4245c0 in the executable /bin/bash)
echo 'p: /bin/bash:0x4245c0' > /sys/kernel/debug/tracing/uprobe_events echo 'p /bin/bash:0x4245c0' > /sys/kernel/debug/tracing/uprobe_events
* Add a probe as a new uretprobe event: * Add a probe as a new uretprobe event:
echo 'r: /bin/bash:0x4245c0' > /sys/kernel/debug/tracing/uprobe_events echo 'r /bin/bash:0x4245c0' > /sys/kernel/debug/tracing/uprobe_events
* Unset registered event: * Unset registered event:
echo '-:bash_0x4245c0' >> /sys/kernel/debug/tracing/uprobe_events echo '-:p_bash_0x4245c0' >> /sys/kernel/debug/tracing/uprobe_events
* Print out the events that are registered: * Print out the events that are registered: