On Tue, 2010-06-29 at 16:49 +0200, Frederic Weisbecker wrote:
quoted text
> > +static void perf_pmu_start_txn(struct pmu *pmu)
> > +{
> > +     perf_pmu_disable(pmu);
> > +}
> > +
> > +static int perf_pmu_commit_txn(struct pmu *pmu)
> > +{
> > +     perf_pmu_enable(pmu);
> > +     return 0;
> > +}
> > +
> > +static void perf_pmu_cancel_txn(struct pmu *pmu)
> > +{
> > +     perf_pmu_enable(pmu);
> 
> 
> Did you mean disable here? 

Nope, start_txn() will disable the pmu, both commit_txn and cancel_txn
can be used to close the transaction and should thus enable the pmu
again.


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