On Wed, Sep 16, 2015 at 11:55:22AM +0200, Milian Wolff wrote: > On Tuesday, September 15, 2015 7:02:37 AM CEST Andi Kleen wrote: > > Milian Wolff <[email protected]> writes: > > > When I do the same with the Dwarf unwinder, it works just fine. Using the > > > LBR unwinder with a performance counter like instructions also works > > > fine. Does anyone know what the issue is here? > > > > LBR is only supported for PMU sampling at this point. > > OK, thanks. Can you give me some more information on why that is? Is it > fundamentally not possible, or simply not yet implemented?
For LBR callgraph it could be implemented. For some other LBR usages there would be limitations, as there is no LBR freezing for software trace points. -Andi -- [email protected] -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
