[RFC] perf script: modify field selection option
From: Stephane Eranian
Date: Mon Nov 20 2017 - 15:53:11 EST
I have been using the perf script -F option on the latest perf and I
find it not very convenient to use. I appreciate the + and - prefix to
field names to add or suppress them. But most of the time, I want to
print only one or two fields and I have to guess which ones are there
by default so I can suppress them. I think there should be a way to
say: start from no fields. I understand why you have default to
maintain compatibility with older perf script but I would like a
syntax to say: remove defaults. For instance:
$ perf script -F --,+ip,+syms .....
Where -- would mean drop all defaults.
Any better suggestions?