Messages in this thread | | | Date | Wed, 12 Jun 2019 23:29:35 +0200 | From | Thomas Preisner <> | Subject | Re: Re: [PATCH] ftrace: add simple oneshot function tracer |
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On Tue, 11 Jun 2019 17:52:37 -0400 Steven Rostedt <rostedt@goodmis.org> wrote:
> What do you mean? The function profile has its own file to enable it: > > echo 1 > /sys/kernel/tracing/function_profile_enabled > > And disable it: > > echo 0 > /sys/kernel/tracing/function_profile_enabled > > -- Steve
Yes, I am aware of the function profiler providing a file operation for enabling and disabling itself. However, my oneshot profiler as of [PATCH v2] is a separate tracer/profiler without this file operation.
As this oneshot profiler is intended to be used for coverage/usage reports I want it to be able to record functions as soon as possible during bootup. Therefore, I just permanently activated the oneshot profiler since as of now there is no means to activate it or the function profiler via kernel commandline just like the normal tracers.
Still, if you want to I can add the file operation for enabling/disabling this new profiler together with a new kernel commandline argument for this profiler?
Or what would be your prefered way?
Greetings, Thomas Preisner
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