On Wed, 4 Sep 2013, Andi Kleen wrote: > > What does this mean? The above values are exported as part of > > include/uapi/linux/perf_event.h > > Do they not work yet? > > You can filter on the fields, but you can't see them outside > the kernel driver yet. The patch to see them is still pending.
so you can filter for aborts, but they'll never show up in the lbr[] sample buffer? > > > > What happens if you set both in transaction and not in? > > > > > > Then you get all branches. > > > > so what happens if you set neither "PERF_SAMPLE_BRANCH_IN_TX" nor > > "PERF_SAMPLE_BRANCH_NO_TX"? Logically you'd get no branches at all, > > but that can't be true as all code prior to 3.11 didn't set those values. > > Then you get all branches too > > (that's how all the other filters work too) This is a really confusing API so does setting "PERF_SAMPLE_BRANCH_ANY" also enable all of the TX types? Is leaving branch_sample_type at 0 the same as setting it to all 1s? Vince -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
