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From: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
To: "Raphaël Beamonte" <raphael.beamonte@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
	Jiri Olsa <jolsa@kernel.org>, lkml <linux-kernel@vger.kernel.org>,
	David Ahern <dsahern@gmail.com>, Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Matt Fleming <matt@codeblueprint.co.uk>
Subject: Re: [PATCH 5/5] perf tools: Enhance parsing events tracepoint error output
Date: Fri, 11 Sep 2015 17:22:22 -0300	[thread overview]
Message-ID: <20150911202222.GV23511@kernel.org> (raw)
In-Reply-To: <CAE_Gge0HafJi=-XBmJtfRAicVGGsdaYWbRQPVR4DG3r0pniRbg@mail.gmail.com>

Em Fri, Sep 11, 2015 at 03:56:44PM -0400, Raphaël Beamonte escreveu:
> Another possibility would be to have another perf command, sort of a
> "perf remountfs", to run with sudo and that would make itself both
> checks and remount accordingly the two fs.

This part maybe more interesting, so I'll focus on it, yeah, having a:
'perf fixperms' command (have a better name? :) ) may make sense, would
need context tho, i.e. something like:

  perf fixperms trace

Or:

  perf fixperms top

But then, perhaps in that case:

  $ trace ls
  Error:	No permissions to read
  /sys/kernel/debug/tracing/events/raw_syscalls/sys_(enter|exit)
  Hint:	Try 'sudo mount -o remount,mode=755 /sys/kernel/debug'

We could just add some more text saying that please check as well that
the other parts of the path we're trying to access are available once
the suggestion is followed.

- Arnaldo


  reply	other threads:[~2015-09-11 20:22 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-07  8:38 [PATCHv2 0/5] perf tools: Enhance parsing events tracepoint error output Jiri Olsa
2015-09-07  8:38 ` [PATCH 1/5] tools: Add err.h with ERR_PTR PTR_ERR interface Jiri Olsa
2015-09-08 20:22   ` Raphaël Beamonte
2015-09-08 20:24     ` Raphaël Beamonte
2015-09-08 21:06     ` Arnaldo Carvalho de Melo
2015-09-08 21:28       ` Raphaël Beamonte
2015-09-08 21:29   ` Raphaël Beamonte
2015-09-16  7:28   ` [tip:perf/core] " tip-bot for Jiri Olsa
2015-09-21 23:41     ` Vinson Lee
2015-09-29  6:35       ` Vinson Lee
2015-09-29  7:14         ` Jiri Olsa
2015-09-29  7:20           ` Jiri Olsa
2015-09-29  7:52             ` He Kuang
2015-09-29  7:57               ` Jiri Olsa
2015-09-29  8:15                 ` He Kuang
2015-09-29 10:41                   ` Jiri Olsa
2015-09-29 14:52                     ` Arnaldo Carvalho de Melo
2015-09-29 15:05                       ` [PATCH] perf tool: Fix shadowed declaration in parse-events.c Jiri Olsa
2015-10-01  7:10                         ` [tip:perf/core] perf tools: " tip-bot for Jiri Olsa
2015-09-07  8:38 ` [PATCH 2/5] perf tools: Add tools/include into tags directories Jiri Olsa
2015-09-15  7:02   ` [tip:perf/core] perf tools: Add tools/ include " tip-bot for Jiri Olsa
2015-09-07  8:38 ` [PATCH 3/5] perf tools: Propagate error info for the tracepoint parsing Jiri Olsa
2015-09-08 21:42   ` Raphaël Beamonte
2015-09-09  7:50     ` Jiri Olsa
2015-09-12 10:54   ` Matt Fleming
2015-09-16  7:29   ` [tip:perf/core] " tip-bot for Jiri Olsa
2015-09-07  8:38 ` [PATCH 4/5] perf tools: Propagate error info from tp_format Jiri Olsa
2015-09-09 20:58   ` Arnaldo Carvalho de Melo
2015-09-10  8:24     ` Jiri Olsa
2015-09-10 14:16       ` Arnaldo Carvalho de Melo
2015-09-14 20:53       ` Arnaldo Carvalho de Melo
2015-09-14 20:59         ` Raphaël Beamonte
2015-09-14 21:36           ` Arnaldo Carvalho de Melo
2015-09-14 22:05             ` Raphaël Beamonte
2015-09-15  2:35               ` Arnaldo Carvalho de Melo
2015-09-14 21:02         ` Arnaldo Carvalho de Melo
2015-09-16  7:29   ` [tip:perf/core] perf evsel: " tip-bot for Jiri Olsa
2015-09-07  8:38 ` [PATCH 5/5] perf tools: Enhance parsing events tracepoint error output Jiri Olsa
2015-09-10  7:00   ` Namhyung Kim
2015-09-10  8:05     ` Jiri Olsa
2015-09-11 16:09       ` Namhyung Kim
2015-09-11 16:16         ` Jiri Olsa
2015-09-11 17:50           ` Raphaël Beamonte
2015-09-11 18:55             ` Arnaldo Carvalho de Melo
2015-09-11 19:56               ` Raphaël Beamonte
2015-09-11 20:22                 ` Arnaldo Carvalho de Melo [this message]
2015-09-11 22:01                   ` Raphaël Beamonte
2015-09-14 20:59       ` Arnaldo Carvalho de Melo
2015-09-16  7:29   ` [tip:perf/core] " tip-bot for Jiri Olsa

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