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Date: Thu, 13 Sep 2012 17:07:20 +0200
From: Ingo Molnar <mingo@kernel.org>
To: Robert Richter <robert.richter@amd.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>, linux-kernel@vger.kernel.org,
        Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH] perf record: Change error message on failure
Message-ID: <20120913150720.GA27411@gmail.com>
References: <1347531654-16024-1-git-send-email-robert.richter@amd.com>
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* Robert Richter <robert.richter@amd.com> wrote:

> Only report
> 
>  No CONFIG_PERF_EVENTS=y kernel support configured?
> 
> if the syscall fails with ENOSYS. In other cases CONFIG_PERF_EVENTS is
> set and might confuse users. The default message is now:
> 
>  Not all events could be opened.

Indeed, and it would be nice to be even less passive-aggressive 
and figure out and display the exact error condition?

Thanks,

	Ingo