Re: [PATCH] perf report: auto-detect branch stack sampling mode

[Ingo Molnar]

A third usability bug is that for some reason a branch sampling 
'perf report' defaults to the stdio output on my testsystem - 
with --no-branch-stack it gives the regular tui.

Even specifying --tui explicitly does not restore the TUI. Is 
there any fundamental reason why the branch stack does not 
support the TUI?

A fourth bug is that regular profiling appears to be busted:

 aldebaran:> perf record -a sleep 1
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.026 MB perf.data (~1120 samples) ]

 aldebaran:~> perf report
 Warning: TUI interface not supported in branch mode
 selected -b but no branch data. Did you call perf record without -b?

Guys, why are you sending me these patches? The tooling side is 
utterly untested and very raw yet.

Thanks,

	Ingo
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