Hi David, (2014/12/30 13:21), David Ahern wrote: > Hi Masami: > > I have been looking at perf-probe again and having a number of problems > with top of tree. > > Here's the first one I have isolated: > > $ perf probe -x /lib64/libc-2.18.so -a 'malloc size=%di' > Probe point 'malloc' not found. > Error: Failed to add events.
It seems to fail when failed to open debuginfo. I confirmed it on ubuntu 14.04 too. I'll try to fix that. Thank you for reporting! > > $ perf probe -x /lib64/libc-2.18.so -F | grep malloc > malloc > malloc@plt > malloc_atfork > malloc_check > malloc_consolidate > malloc_hook_ini > malloc_info > malloc_printerr > mallochook > ptmalloc_init > ptmalloc_init.part.8 > ptmalloc_lock_all > ptmalloc_unlock_all > ptmalloc_unlock_all2 > tr_mallochook > > $ perf probe -x /lib64/libc-2.18.so -a 'malloc=malloc size=%di' > Probe point 'malloc' not found. > Error: Failed to add events. > > A year ago (v3.12) this worked fine so I did a git bisect which points to: > > commit fb7345bbf7fad9bf72ef63a19c707970b9685812 > Author: Masami Hiramatsu <[email protected]> > Date: Thu Dec 26 05:41:53 2013 +0000 > > perf probe: Support basic dwarf-based operations on uprobe events > > I have tried top of tree on Fedora 16, 18 and 20 with a variety of > kernels - and a variety of results. Reverting to > 8a613d40e389b723fd5889ac8d4033ed4030be31 which is the commit before this > one and it works again. > > David > -- > 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/ > -- Masami HIRAMATSU Software Platform Research Dept. Linux Technology Research Center Hitachi, Ltd., Yokohama Research Laboratory E-mail: [email protected] -- 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/
