> > + PERF_SAMPLE_BRANCH_ABORT_TX = 1U << 7, /* transaction aborts */ > > + PERF_SAMPLE_BRANCH_IN_TX = 1U << 8, /* in transaction */ > > + PERF_SAMPLE_BRANCH_NO_TX = 1U << 9, /* not in transaction */ > > so if you specify these flags in branch_sample_type, what information > appears in the branch record?
This is just a filter, so when set branches that do not satisfy the filter are not reported. The patches to export the new fields haven't been merged yet. > > If you get an abort, what address appears in the record? Abort is a jump from the abort point to the abort handler or the HLE XACQUIRE lock instruction. > What does it mean in regards to a branch entry to be or not be in a > transaction? When the branch is executed the CPU is in the transactional execution state. > > If you set "in transaction" does that then only record branches that are > in transactions? Yes, like all the other branch filter flags. > What happens if you set both in transaction and not in? Then you get all branches. > > Is there some sort of document from intel you can link to that describes > all of this? http://download.intel.com/products/processor/manual/253669.pdf Chapter 17.8 -Andi -- a...@linux.intel.com -- Speaking for myself only -- 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/
