Messages in this thread | | | Date | Tue, 9 Jun 2009 21:32:32 +0800 | From | Yong Wang <> | Subject | Re: [PATCH -tip] perf_counter/x86: Fix incorrect default branch |
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On Tue, Jun 09, 2009 at 03:23:13PM +0200, Ingo Molnar wrote: > > * Yong Wang <yong.y.wang@linux.intel.com> wrote: > > > The event selector and UMASK values of Nehalem do not apply to all > > Intel processors. > > The idea was to offer _some_ sort of table on new CPUs, instead of > nothing... > > Eventually Intel stops changing those model specific index values in > future CPUs and puts them into architectural perfmon, for > fundamental stats like L1/LLC cache statistics. > > In that case defaulting to the latest (known) enumeration might work > out to be just the thing used by all future CPUs. > > So this is a subtle hint ;-) >
I see what you mean. You talked about future cpus. But what about those old ones that are not atom, core2 or nehalem? Forget about them?
Thanks -Yong
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