tracing: Add enabling of events to boot instances

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Add the format of:

  trace_instance=foo,sched:sched_switch,irq_handler_entry,initcall

That will create the "foo" instance and enable the sched_switch event
(here were the "sched" system is explicitly specified), the
irq_handler_entry event, and all events under the system initcall.

Link: https://lkml.kernel.org/r/20230207173026.386114535@goodmis.org

Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

...

This commit is contained in:

Steven Rostedt (Google) 2023-02-07 12:28:51 -05:00

parent cb1f98c5e5

commit c484648083

4 changed files with 24 additions and 5 deletions

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14

Documentation/admin-guide/kernel-parameters.txt

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4

kernel/trace/trace.c

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2

kernel/trace/trace.h

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9

kernel/trace/trace_events.c

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