linux-kernel - Re: [PATCH 11/15] tools lib api: Add mount support for fs

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Date:	Fri, 4 Sep 2015 11:12:25 -0400
From:	Raphaël Beamonte <raphael.beamonte@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	Jiri Olsa <jolsa@...hat.com>, Jiri Olsa <jolsa@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Matt Fleming <matt@...eblueprint.co.uk>
Subject: Re: [PATCH 11/15] tools lib api: Add mount support for fs

2015-09-04 11:00 GMT-04:00 Steven Rostedt <rostedt@...dmis.org>:
> I will also add that the reason the /sys/kernel/debug directory is
> created when DEBUGFS is enabled, was specifically so that tools had a
> place to automatically mount it when needed. That was the entire
> purpose of that directory.

Makes sense!
It's also true that, as you both mentioned, it makes perf more user
friendly. I wasn't sure to what extent that was the purpose though!
Thanks for the clarifications!


2015-09-02 3:56 GMT-04:00 Jiri Olsa <jolsa@...nel.org>:
> Adding name__mount (where name is in sysfs,procfs,debugfs,tracefs)
> interface that tries to mount the filesystem in case no mount is found.
>
> Link: http://lkml.kernel.org/n/tip-ja49vwfiq2qqkmoxx9yk26lm@git.kernel.org
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/lib/api/fs/fs.c | 44 +++++++++++++++++++++++++++++++++++++++-----
>  tools/lib/api/fs/fs.h | 15 +++++++++++----
>  2 files changed, 50 insertions(+), 9 deletions(-)

The patch is fine by me! My Reviewed-by can be added if wanted :o)
Reviewed-by: Raphaël Beamonte <raphael.beamonte@...il.com>
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