From: Benjamin King <benjaminking@web.de>
To: Milian Wolff <milian.wolff@kdab.com>
Cc: Linux perf users <linux-perf-users@vger.kernel.org>
Subject: Re: perf tracepoints for regular user?
Date: Tue, 19 Jan 2016 06:02:44 +0100 [thread overview]
Message-ID: <20160119050244.GA13183@localhost> (raw)
In-Reply-To: <4927145.OUESRpdSEU@agathebauer>
Hi Milian,
On Sun, Jan 17, 2016 at 10:20:00PM +0100, Milian Wolff wrote:
>On Freitag, 15. Januar 2016 22:05:16 CET Benjamin King wrote:
>> I am trying to use 'perf stat -e uprobes:xyz' on a tracepoint that I have
>> previously set, but with no success.
>Try these commands:
>
>$ sudo mount -o remount,mode=755 /sys/kernel/debug
>$ sudo mount -o remount,mode=755 /sys/kernel/debug/tracing
>$ echo \"-1\" | sudo tee /proc/sys/kernel/perf_event_paranoid
Hm, that does not work for me. I can do the first remount, but not the
second:
-----
$ sudo mount -o remount,mode=755 /sys/kernel/debug/tracing
mount: can't find /sys/kernel/debug/tracing in /etc/fstab
$ mount|grep debug
none on /sys/kernel/debug type debugfs (rw,mode=755,mode=755)
-----
And then, I still can not see tracepoints as a regular user:
-----
$ perf list tracepoint
List of pre-defined events (to be used in -e):
$
-----
If this works for you, then maybe it's my version? I'm on 4.2.3
Cheers,
Benjamin
next prev parent reply other threads:[~2016-01-19 5:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-15 21:05 perf tracepoints for regular user? Benjamin King
2016-01-17 21:20 ` Milian Wolff
2016-01-17 21:56 ` Milian Wolff
2016-01-19 5:02 ` Benjamin King [this message]
2016-01-19 22:18 ` Arnaldo Carvalho de Melo
2016-01-20 11:50 ` Aw: " Benjamin King
2016-01-21 14:05 ` Arnaldo Carvalho de Melo
2016-01-25 15:43 ` Benjamin King
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