diff mbox series

[v3.1,3/8] Documentation: tracing: Add tracing_on option to boot-time tracer

Message ID 159978523520.485820.9250337223076929279.stgit@devnote2 (mailing list archive)
State New
Headers show
Series None | expand

Commit Message

Masami Hiramatsu (Google) Sept. 11, 2020, 12:47 a.m. UTC
Add tracing_on option description to the boot-time tracer.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 Changes in v3.1:
   - Fix "on boot" to "on starting boot-time tracing".
---
 Documentation/trace/boottime-trace.rst |    4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/Documentation/trace/boottime-trace.rst b/Documentation/trace/boottime-trace.rst
index dcb390075ca1..9bc8aceb8c0a 100644
--- a/Documentation/trace/boottime-trace.rst
+++ b/Documentation/trace/boottime-trace.rst
@@ -61,6 +61,10 @@  These options can be used for each instance including global ftrace node.
 ftrace.[instance.INSTANCE.]options = OPT1[, OPT2[...]]
    Enable given ftrace options.
 
+ftrace.[instance.INSTANCE.]tracing_on = 0|1
+   Enable/Disable tracing on this instance when starting boot-time tracing.
+   (you can enable it by the "traceon" event trigger action)
+
 ftrace.[instance.INSTANCE.]trace_clock = CLOCK
    Set given CLOCK to ftrace's trace_clock.