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| author |   Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2015-11-03 16:37:15 -0500 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2015-11-03 16:37:15 -0500 |
| commit | 627645fdb657dfae5fcf26bbf6a6e1b63751dbc8 (patch) | |
| tree | 7c8d356aa5ba5d77def07dd5859d848c94172131 /Documentation/trace/ftrace.txt | |
| parent | ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark (diff) | |
| download | wireguard-linux-627645fdb657dfae5fcf26bbf6a6e1b63751dbc8.tar.xz wireguard-linux-627645fdb657dfae5fcf26bbf6a6e1b63751dbc8.zip | |
tracing: Add some documentation about set_event_pid
Update Documentation to include some comments about how to use
set_event_pid.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'Documentation/trace/ftrace.txt')
| -rw-r--r-- | Documentation/trace/ftrace.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt index db18362c14f3..f52f297cb406 100644 --- a/Documentation/trace/ftrace.txt +++ b/Documentation/trace/ftrace.txt @@ -204,6 +204,12 @@ of ftrace. Here is a list of some of the key files: Have the function tracer only trace a single thread. + set_event_pid: + + Have the events only trace a task with a PID listed in this file. + Note, sched_switch and sched_wake_up will also trace events + listed in this file. + set_graph_function: Set a "trigger" function where tracing should start |