Re: [RFC PATCH] perf tools: Don't set inherit bit for system wide evsel

From: Wangnan (F)
Date: Mon Oct 26 2015 - 07:49:33 EST

On 2015/10/26 17:25, Adrian Hunter wrote:
On 26/10/15 11:08, Wangnan (F) wrote:

evsel->system_wide is introduced by commit
(perf evlist: Add 'system_wide' option), but Adrian only introduced a new field
into perf, doesn't really make it active. Until now the only user of it is
arch/x86/util/intel-pt.c, but I'm not very sure the reason for IPT to use that

If I understand correctly, it should be okay for a normal system wide evsel
to have
this var set. I'll try another RFC for it.
evsel->system_wide is for mixing evsels that aren't system-wide with ones
that are.

It might work to set it for all system-wide evsels but you will have to
check the code and test it, because that would be using it in a new way
that has never been tested.

I have check all occurance of system_wide I can found and found
only one behavior change which I believe should be okay. Please
have a look at [1].

Thank you.


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