Date: Thu, 9 Jul 2015 14:42:57 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Andy Lutomirski <luto@amacapital.net>,
        Vince Weaver <vincent.weaver@maine.edu>,
        Thomas Gleixner <tglx@linutronix.de>,
        "H. Peter Anvin" <hpa@linux.intel.com>, linux-kernel@vger.kernel.org,
        Jiri Olsa <jolsa@redhat.com>, Stephane Eranian <eranian@google.com>,
        Borislav Petkov <bp@suse.de>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Andi Kleen <ak@linux.intel.com>
Subject: Re: [RFC PATCH] perf: Provide status of known PMUs
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On Thu, Jul 09, 2015 at 02:32:05PM +0200, Ingo Molnar wrote:
> 
>    perf record error: The 'bts' PMU is not available, because the CPU does not support it

This one makes sense.

>    perf record error: The 'bts' PMU is not available, because this architecture does not support it
>    perf record error: The 'bts' PMU is not available, because its driver is not built into the kernel
> 
> Because if it's the wrong architecture or CPU, I look for a box with the right 
> one, if it's simply the kernel not having the necessary PMU driver then I'll boot 
> a kernel with it enabled.

These not so much; why won't a generic: "Unknown PMU, check arch/kernel"
do?

The thing is, I hate that hard-coded list, its pain I don't need.
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