From: Frank Rowand <frowand.list-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
Cc: Wolfram Sang
<wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>,
Steven Rostedt <rostedt-nx8X9YLhiw1AfugRpC6u6w@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Tyrel Datwyler
<tyreld-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Geert Uytterhoeven
<geert-Td1EMuHUCqxL1ZNQvxDV9g@public.gmane.org>,
linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linuxppc-dev-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [RFC PATCH v2 0/1] of: easier debugging for node life cycle issues
Date: Thu, 25 Jan 2018 16:46:06 -0800 [thread overview]
Message-ID: <4b373579-7a86-6883-2624-12a5408bb49b@gmail.com> (raw)
In-Reply-To: <20180125231443.44yy65ztr6exaam7@ninjato>
On 01/25/18 15:14, Wolfram Sang wrote:
>
>> This means that ftrace can not be used for the of_node_get(),
>> of_node_put(), and of_node_release() debug info, because
>> these functions are called before early_initcall().
>
> For the record: You can still unbind/bind devices. This is how I
> debugged an issue.
I wasn't implying that the data wasn't usable for any use case.
The point is that using ftrace means there are use cases for the
debug information where the information will not be available.
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next prev parent reply other threads:[~2018-01-26 0:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-21 14:31 [RFC PATCH v2 0/1] of: easier debugging for node life cycle issues Wolfram Sang
2018-01-21 14:31 ` [RFC PATCH v2 1/1] of: introduce event tracepoints for dynamic device_node lifecyle Wolfram Sang
2018-01-21 22:01 ` Steven Rostedt
2018-01-25 6:48 ` Frank Rowand
2018-01-25 6:58 ` Frank Rowand
[not found] ` <4cc627c4-1aaf-b8d5-5a26-eea7e596743f-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-25 8:01 ` Geert Uytterhoeven
2018-01-25 22:40 ` Tyrel Datwyler
[not found] ` <25f83d0d-bc67-f1b5-cadb-838987fd846d-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2018-01-25 23:31 ` Frank Rowand
2018-01-25 8:32 ` Frank Rowand
2018-01-22 8:43 ` [RFC PATCH v2 0/1] of: easier debugging for node life cycle issues Frank Rowand
2018-01-22 11:49 ` Wolfram Sang
2018-01-23 12:11 ` Michael Ellerman
2018-01-23 19:53 ` Frank Rowand
2018-01-25 6:47 ` Frank Rowand
[not found] ` <11cf8fac-d2fe-ecdb-546f-de3c3b42a637-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-25 23:12 ` Wolfram Sang
2018-01-26 0:42 ` Frank Rowand
2018-01-25 6:48 ` Frank Rowand
[not found] ` <20180121143117.19805-1-wsa+renesas-jBu1N2QxHDJrcw3mvpCnnVaTQe2KTcn/@public.gmane.org>
2018-01-25 6:55 ` Frank Rowand
2018-01-25 11:03 ` Steven Rostedt
2018-01-25 21:49 ` Frank Rowand
[not found] ` <a30d4cd3-0068-8cca-cc2f-ca207d0d278b-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-01-25 23:14 ` Wolfram Sang
2018-01-26 0:46 ` Frank Rowand [this message]
2018-02-01 17:10 ` Steven Rostedt
2018-01-25 23:53 ` Tyrel Datwyler
2018-01-26 1:08 ` Frank Rowand
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