On Wed, Oct 24, 2012 at 02:21:43PM +0200, Stephane Eranian wrote: > But still, if I do: > $ perf record -g -e cpu/cycles/k ........ > > Looks like your code will activate LBR cstack for user stack even > though I don't use it. > I know it won't generate any user samples (theoretically) but you are > still commandeering > the LBR resource which other events may want to use.
You can disable it in sysfs. LBR is a power user feature and they will know how to do this. See it as a "prefer the needs of the 95+% over the needs of the few" default -Andi -- 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/
