From: Steven Rostedt <rostedt@goodmis.org>
To: Frank Rowand <frowand.list@gmail.com>
Cc: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>,
robh+dt@kernel.org, linuxppc-dev@lists.ozlabs.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
nfont@linux.vnet.ibm.com, mpe@ellerman.id.au, mingo@redhat.com
Subject: Re: [PATCH] of: introduce event tracepoints for dynamic device_node lifecyle
Date: Tue, 18 Apr 2017 22:46:57 -0400 [thread overview]
Message-ID: <20170418224657.1b7ed057@grimm.local.home> (raw)
In-Reply-To: <58F6AA35.2040902@gmail.com>
On Tue, 18 Apr 2017 17:07:17 -0700
Frank Rowand <frowand.list@gmail.com> wrote:
> As far as I know, there is no easy way to combine trace data and printk()
> style data to create a single chronology of events. If some of the
> information needed to debug an issue is trace data and some is printk()
> style data then it becomes more difficult to understand the overall
> situation.
You mean like:
# echo 1 > /sys/kernel/debug/tracing/events/printk/console/enable
Makes all printks also go into the ftrace ring buffer.
-- Steve
>
> If Rob wants to convert printk() style data to trace data (and I can't
> convince him otherwise) then I will have further comments on this specific
> patch.
>
next prev parent reply other threads:[~2017-04-19 2:47 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-18 0:32 [PATCH] of: introduce event tracepoints for dynamic device_node lifecyle Tyrel Datwyler
2017-04-18 0:35 ` Tyrel Datwyler
2017-04-18 16:46 ` Rob Herring
2017-04-19 2:30 ` Oliver O'Halloran
2017-04-19 10:13 ` Michael Ellerman
2017-04-19 21:13 ` Tyrel Datwyler
2017-04-19 0:07 ` Frank Rowand
2017-04-19 1:31 ` Michael Ellerman
2017-04-19 2:31 ` Frank Rowand
2017-04-19 18:33 ` Tyrel Datwyler
2017-04-19 23:27 ` Tyrel Datwyler
2017-04-20 2:33 ` Steven Rostedt
2017-04-20 4:47 ` Frank Rowand
2017-04-20 5:24 ` Tyrel Datwyler
2017-04-20 13:37 ` Steven Rostedt
2017-04-20 4:43 ` Frank Rowand
2017-04-20 5:13 ` Frank Rowand
2017-04-20 16:51 ` Tyrel Datwyler
2017-04-20 19:34 ` Frank Rowand
2017-04-21 1:57 ` Michael Ellerman
2017-04-19 1:42 ` Frank Rowand
2017-04-19 2:49 ` Steven Rostedt
2017-04-19 18:45 ` Tyrel Datwyler
2017-04-20 2:37 ` Frank Rowand
2017-04-20 10:44 ` Frank Rowand
2017-04-19 2:46 ` Steven Rostedt [this message]
2017-04-19 3:12 ` Frank Rowand
2017-04-19 17:44 ` Frank Rowand
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