On Tue, Mar 05, 2019 at 05:28:54PM +0100, Jiri Olsa wrote: > On Tue, Mar 05, 2019 at 08:13:19AM -0800, Andi Kleen wrote: > > On Tue, Mar 05, 2019 at 04:25:33PM +0100, Jiri Olsa wrote: > > > Getting precise_ip field from the perf_pmu::max_precise > > > config read from sysfs. If it's not available falling > > > back to current detection function. > > > > max_precise depends on the event. This won't work for all > > events. For example only instructions and cycles support > > ppp > > I'm getting precise_ip=3 on mem-* events as well, that's why I > was fixing this.. now it's not working for any event
I don't think it means anything for mem-* There's some support for it on Goldmont plus for other events, but it doesn't support mem-*. On big core it's only for instructions and cycles, all implemented with the same event. All other PEBS events only have two levels switching between the two IPs. -Andi
