Messages in this thread | | | Date | Wed, 18 Nov 2009 20:39:27 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] ia64 support for tools/perf/ |
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* Peter Zijlstra <peterz@infradead.org> wrote:
> On Tue, 2009-11-17 at 09:25 -0800, Luck, Tony wrote: > > > Btw., are you planning HAVE_PERF_EVENTS support for IA64? (It's nice > > > stuff, i can only recommend it! ;-) > > > > My first goal is getting the s/w events hooked up and working. I'm > > still wondering about how to get the h/w counters to co-exist with > > perfmon (which has been part of ia64 API for many years). > > A first approach could be to make them mutually exclusive at runtime. > When there's a perf_event user, perfmon users get FAIL and vs. > > This is basically the state for x86 perf_event vs oprofile atm.
Yep, this is probably the least intrusive approach. Mixing the implementations beyond trivial exclusion would probably be pain.
Ingo
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