From: Steven Rostedt <rostedt@goodmis.org>
To: Thomas Preisner <linux@tpreisner.de>
Cc: Ingo Molnar <mingo@redhat.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ftrace: add simple oneshot function tracer
Date: Tue, 11 Jun 2019 17:52:37 -0400 [thread overview]
Message-ID: <20190611175237.0ea4fa4f@gandalf.local.home> (raw)
In-Reply-To: <20190611203312.13653-1-linux@tpreisner.de>
On Tue, 11 Jun 2019 22:33:11 +0200
Thomas Preisner <linux@tpreisner.de> wrote:
> However, due to there not being any mechanism (that I am aware of) to
> activate such stat tracers via kernel commandline this oneshot profiler
> is now always active when selected. Therefore, it is no longer possible
> to disable this tracer during runtime and thus, allocated memory is no
> longer freed.
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
next prev parent reply other threads:[~2019-06-11 21:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-29 9:31 Thomas Preisner
2019-05-29 14:45 ` Steven Rostedt
2019-06-11 20:33 ` [PATCH v2] ftrace: add simple oneshot function profiler Thomas Preisner
[not found] ` <20190611203312.13653-1-linux@tpreisner.de>
2019-06-11 21:52 ` Steven Rostedt [this message]
2019-06-12 21:29 ` Re: [PATCH] ftrace: add simple oneshot function tracer Thomas Preisner
2019-06-18 0:16 ` Steven Rostedt
2019-06-23 12:05 ` Thomas Preisner
2019-06-26 16:04 ` Steven Rostedt
2019-07-09 13:53 ` Thomas Preisner
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