On Sun, 25 Sep 2016 13:14:21 +0200 Jiri Olsa <[email protected]> wrote:
> On Sat, Sep 24, 2016 at 12:34:47AM +0900, Masami Hiramatsu wrote: > > Hi, > > > > Here is a series of patches for fixing several issues when > > probing on C++ binaries. > > > > - Ignore inlined function definition if it has no instance [1/4] > > - Skip (inlined/normal) functions which entry address is 0 [2/4] > > - Cut off the filename for group name if it includes characters > > which can not be used for C symbol name [3/4] > > - Search mangled symbol name from debuginfo [4/4] > > > > So, with this series, perf-probe can handle "mangled symbol" or > > "method name" as below; > > ---- > > $ ./perf probe -x /usr/lib64/libstdc++.so.6 \ > > -D _ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv > > p:probe_libstdc/_ZNKSt15basic_fstreamXXIwSt11char_traitsIwEE7is_openEv > > /usr/lib64/libstdc++.so.6.0.22:0x8ca60 > > > > $ ./perf probe -x /usr/lib64/libstdc++.so.6 -D is_open > > p:probe_libstdc/is_open /usr/lib64/libstdc++.so.6.0.22:0x8ca80 > > p:probe_libstdc/is_open_1 /usr/lib64/libstdc++.so.6.0.22:0x8ca70 > > p:probe_libstdc/is_open_2 /usr/lib64/libstdc++.so.6.0.22:0x8ca60 > > p:probe_libstdc/is_open_3 /usr/lib64/libstdc++.so.6.0.22:0xb0ad0 > > p:probe_libstdc/is_open_4 /usr/lib64/libstdc++.so.6.0.22:0xecca9 > > ---- > > > > Jiri and Thomas, could you try this if you need it? > > tried examples from changelogs and it works for me > > Tested-by: Jiri Olsa <[email protected]> Thanks Jiri! > > thanks, > jirka > > > > > TODO: > > - Support demangled method name(in short), like > > std::basic_fstream::is_open. > > > > Thank you, > > > > --- > > > > Masami Hiramatsu (4): > > perf-probe: Ignore the error of finding inline instance > > perf-probe: Skip if the function address is 0 > > perf-probe: Fix to cut off incompatible chars from group name > > perf-probe: Match linkage name with mangled name > > > > > > tools/perf/util/dwarf-aux.c | 28 ++++++++++++++++++++++++++-- > > tools/perf/util/dwarf-aux.h | 3 +++ > > tools/perf/util/probe-event.c | 10 +++++++--- > > tools/perf/util/probe-finder.c | 17 ++++++++++++++--- > > 4 files changed, 50 insertions(+), 8 deletions(-) > > > > -- > > Masami Hiramatsu -- Masami Hiramatsu <[email protected]>
