> zero's are taken care by: > http://marc.info/?t=138909914500003&r=1&w=2 > within following patchset: > http://marc.info/?l=linux-kernel&m=138909914404574&w=2
> which implements libdw dwarf unwind.. you might > actualy want to try it, it seems to be little faster > than libunwind unwinder Since I do not yet have elfutils 0.158 installed, I tried to apply the single patch both to linux-3.12 and to the kernel you pointed me at, and used perf with the libunwind unwinder. With the 3.12 kernel I get segfaults on perf report; with the 3.13 branch zeroes are still present. Maybe I messed up. I think I'll wait for the newest elfutils and give a shot ad the libdw unwinder. > > > > I also get an occasional screw in the dynamic linker code path: > > > > 5.26% ls [kernel.kallsyms] [k] > > lock_release > > | > > --- lock_release > > __mem_cgroup_try_charge > > mem_cgroup_charge_common > > mem_cgroup_newpage_charge > > do_wp_page > > handle_mm_fault > > __do_page_fault > > do_page_fault > > do_async_page_fault > > async_page_fault > > __init_cpu_features > > 0x7fd2357470de <---- HERE > > not sure if that's just untranslatable part (.plt .got?) > or an error.. need to be checked some day ;-) OK. Thanks for your time. Mauro -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
