Re: [PATCH] perf, record: Add clockid parameter

[Peter Zijlstra]

On Mon, Mar 30, 2015 at 11:24:12AM -0600, David Ahern wrote:
> This works but the result is not always intuitive as to why it failed.
> 
> On a kernel that does not support the clock id you get:
>     $ perf sched record -k mono -- sleep 1
>     Error:
>     clockid not supported.
> 
> And on a kernel that supports clockid but not for NMI:
> 
>     $ perf record -k realtime -a -- sleep 1
>     Error:
>     clockid not supported.
> 
>     --> H/W counters so realtime is not allowed
> 
> Same message though different root causes.

Heh, ok I can fudge that :-)
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