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| author |   Steven Rostedt <rostedt@goodmis.org> | 2025-01-16 09:33:35 -0500 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2025-01-16 09:41:07 -0500 |
| commit | 4c86bc531e60900053384867c082675bba82c29f (patch) | |
| tree | 223e23717008f5b5946978de45590f6421b7bf66 /kernel/trace/trace.c | |
| parent | selftests/tracing: Add hist poll() support test (diff) | |
| download | wireguard-linux-4c86bc531e60900053384867c082675bba82c29f.tar.xz wireguard-linux-4c86bc531e60900053384867c082675bba82c29f.zip | |
tracing: Add :mod: command to enabled module events
Add a :mod: command to enable only events from a given module from the
set_events file.
echo '*:mod:<module>' > set_events
Or
echo ':mod:<module>' > set_events
Will enable all events for that module. Specific events can also be
enabled via:
echo '<event>:mod:<module>' > set_events
Or
echo '<system>:<event>:mod:<module>' > set_events
Or
echo '*:<event>:mod:<module>' > set_events
The ":mod:" keyword is consistent with the function tracing filter to
enable functions from a given module.
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/20250116143533.214496360@goodmis.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 5aeb898054e7..cb85ee4a8807 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -5514,6 +5514,8 @@ static const char readme_msg[] = "\t efield: For event probes ('e' types), the field is on of the fields\n" "\t of the <attached-group>/<attached-event>.\n" #endif + " set_event\t\t- Enables events by name written into it\n" + "\t\t\t Can enable module events via: :mod:<module>\n" " events/\t\t- Directory containing all trace event subsystems:\n" " enable\t\t- Write 0/1 to enable/disable tracing of all events\n" " events/<system>/\t- Directory containing all trace events for <system>:\n" |