Hello Phil, On Thu, Apr 17, 2008 at 4:10 PM, Philip Mucci <[EMAIL PROTECTED]> wrote: > Hi Stefane, > > A while ago you clarified the usage of start vs. restore in certain > scenarios, usually having to do when one architecture has a global enable > bit vs that of event-only enabling in others. > > On the SiCortex architecture, we actually have different types for each of > the different PMU's. > > My question now, is oriented around, whether pfm_arch_start() is guaranteed > to be called ONCE for every EVENTSET or just one per thread. In the case > when multiplexing, one eventset may have PMU1 events and the other may have > PMU2 events. If PMU2 needs the global enable bit set, pfm_arch_start will > never catch it as it gets called with the eventset for PMU1. > pfm_arch_start() is called each time a set is activated. That could be on pfm_start() for the initial set or on set switches in pfm_switch_sets().
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