tracing: Add :mod: command to enabled module events

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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>

...

This commit is contained in:

Steven Rostedt 2025-01-16 09:33:35 -05:00 • committed by Steven Rostedt (Google)

parent 80c3e28528

commit 4c86bc531e

3 changed files with 70 additions and 13 deletions

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22

Documentation/trace/events.rst

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2

kernel/trace/trace.c

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59

kernel/trace/trace_events.c

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