On Mon, Jul 08, 2013 at 11:24:18AM -0400, Vince Weaver wrote: > > I guess I should have been noisier about this at the time. > > Linux 3.9 came with commit > e259514eef764a5286873618e34c560ecb6cff13 > that enabled AMD fam15h Northbridge support, by exposing the events as > part of the core CPU. > > Then Linux 3.10 changed this with > c43ca5091a374c1f6778bd7e4a39a5a10735a917 > and split them out as a separate PMU. > > This of course breaks libpfm4 and thus PAPI
Urgh, so the 3.9 patches should never have been merged and sunk in while I was doing my vegetable imitation. Stephane agreed with the change in 3.10; and I suppose he overlooked the fact that people were already using it :/ I specifically asked if there were already users as that would indeed require some form of backwards compatibility -- however annoying. But to answer your question, no we should not blindly break stuff like this -- but yeah it would have been ever so much more useful for people to report this before we ship a release. Stephane; do you see a sane way to bridge this now? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
