Re: [PATCH 3/6] perf timechart: add support for displaying onlytasks related data

[Stanislav Fomichev]

> Hmm.. double negation is always confusing to me. :-/  How about making
> it a boolean option that sets "task_only" variable?
Ok.

> Also need to update the doc.  And what if user gives -P and -T options
> at the same time?
Is something like this is enough (or you'd like some printout with error
details)?

if (!proc_num && task_only)
		usage_with_options(timechart_usage, options);
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