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authorMasami Hiramatsu <mhiramat@kernel.org>2020-09-11 09:47:15 +0900
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2020-09-21 21:06:03 -0400
commitc51ba517989efb4be3d8658f31c98786d88a89fe (patch)
tree5c32eeaf59c2ece5b7ea0d8425244e7705e28c02 /Documentation/trace
parenttracing/boot: Add per-instance tracing_on option support (diff)
downloadlinux-dev-c51ba517989efb4be3d8658f31c98786d88a89fe.tar.xz
linux-dev-c51ba517989efb4be3d8658f31c98786d88a89fe.zip
Documentation: tracing: Add tracing_on option to boot-time tracer
Add tracing_on option description to the boot-time tracer. Link: https://lkml.kernel.org/r/159978523520.485820.9250337223076929279.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'Documentation/trace')
-rw-r--r--Documentation/trace/boottime-trace.rst4
1 files changed, 4 insertions, 0 deletions
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.