Messages in this thread Patch in this message | | | From | Arnaldo Carvalho de Melo <> | Subject | [PATCH 09/10] perf probe: Add '--demangle'/'--no-demangle' | Date | Thu, 14 Nov 2013 17:25:14 -0300 |
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From: Azat Khuzhin <a3at.mail@gmail.com>
You can't pass demangled name into "perf probe", because of special chars: ./perf probe -f -x /tmp/a.out 'foo(int)' Semantic error :There is non-digit char in line number.
And you can't even pass without demangling (because it search symbol in DSO with demangle=true): ./perf probe -f -x /tmp/a.out _Z3fooi no symbols found in /tmp/a.out, maybe install a debug package?
However: nm /tmp/a.out | grep foo 000000000040056d T _Z3fooi
After this patch, using the next command: ./perf probe -f --no-demangle -x /tmp/a.out _Z3fooi
probe will be successfully added.
Signed-off-by: Azat Khuzhin <a3at.mail@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1382947464-31266-1-git-send-email-a3at.mail@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/builtin-probe.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index 89acc17cf2a0..6ea9e85bdc00 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -325,6 +325,8 @@ int cmd_probe(int argc, const char **argv, const char *prefix __maybe_unused) opt_set_filter), OPT_CALLBACK('x', "exec", NULL, "executable|path", "target executable name or path", opt_set_target), + OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle, + "Disable symbol demangling"), OPT_END() }; int ret; -- 1.8.1.4
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