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| author | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-02-07 20:28:50 +0300 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2023-02-07 20:49:56 +0300 |
| commit | cb1f98c5e5742273bca39410d504430793ab701a (patch) | |
| tree | 49b548d0bc0d127bb822339ea39266d9d220db3f /Documentation/admin-guide | |
| parent | 9971c3f944489ff7aacb9d25e0cde841a5f6018a (diff) | |
| download | linux-cb1f98c5e5742273bca39410d504430793ab701a.tar.xz | |
tracing: Add creation of instances at boot command line
Add kernel command line to add tracing instances. This only creates
instances at boot but still does not enable any events to them. Later
changes will extend this command line to add enabling of events, filters,
and triggers. As well as possibly redirecting trace_printk()!
Link: https://lkml.kernel.org/r/20230207173026.186210158@goodmis.org
Cc: Randy Dunlap <rdunlap@infradead.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>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 6cfa6e3996cf..9545da5ed849 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -6272,6 +6272,12 @@ comma-separated list of trace events to enable. See also Documentation/trace/events.rst + trace_instance=[instance-info] + [FTRACE] Create a ring buffer instance early in boot up. + This will be listed in: + + /sys/kernel/tracing/instances + trace_options=[option-list] [FTRACE] Enable or disable tracer options at boot. The option-list is a comma delimited list of options |