Re: [RFC PATCHv3] perf tools: add event grouping capability to"perf stat"

[Peter Zijlstra]

On Thu, 2010-11-25 at 08:46 +0100, Frederic Weisbecker wrote:
> > perf record -e task-clock:freq=1000,cycles:period=0
> 
> Wouldn't this syntax clash with the flags we have on events already?
> 
> the u,k,p flags? 

>From stephane's email (to which you were CC'ed) http://lkml.org/lkml/2010/11/23/303

> $ perf record -e cycles:u:period=100000,instructions:k:freq=1500 -a -- sleep 5

The parser isn't particularly pretty, maybe its time to think about a parser generator?
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