Re: [PATCH] perf, x86: add Intel IvyBridge event schedulingconstraints
From: Andi Kleen
Date: Wed Feb 20 2013 - 17:08:10 EST
> > Except for LDM_PENDING the CYCLE_ACTIVITY events have been also added to Sandy Bridge.
> > So it should be also added there.
> As far as I know and I double-checked the documentation I have, there
> is no CYCLE_ACTIVITY
> event on SNB or SNB-EP.
page 19-28 in the Jan 2013 SDM. It was only recently added.
It's only a subset of what you have on Ivy Bridge.
> > In fact I think you can still share the table because it would just add some
> > non existent events to Sandy Bridge, which is a noop.
> I don't see the point of this, except saving a few bytes. Isn't it
> better to keep each PMU separate?
Ok, as long as you update the SNB table too.
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