linux-kernel - Re: [QUERY] Why does perf-trace need me to be root?

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Message-ID: <CALkWK0ku=fFpQkd6r6DhwVAALpfgA8K-JkTjLJqSf0y-ysmmkQ@mail.gmail.com>
Date:	Thu, 3 Oct 2013 12:50:16 +0530
From:	Ramkumar Ramachandra <artagnon@...il.com>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	David Ahern <dsahern@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
Subject: Re: [QUERY] Why does perf-trace need me to be root?

Ingo Molnar wrote:
>    echo 'kernel.perf_event_paranoid = -1' >> /etc/sysctl.conf

Thanks Ingo. It's called /etc/sysctl.d/* now:
https://www.archlinux.org/news/deprecation-of-etcsysctlconf/

> The current output:
>
>   comet:~/tip> perf trace
>   Couldn't read the raw_syscalls tracepoints information!
>
> is as hostile to the user as it gets ;-)

Patches are on the way :)
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