Commit-ID: 35e17b2450e09968f9702d4048c228199af171bc
Gitweb: http://git.kernel.org/tip/35e17b2450e09968f9702d4048c228199af171bc
Author: Azat Khuzhin <a3at.mail@xxxxxxxxx>
AuthorDate: Mon, 28 Oct 2013 12:04:24 +0400
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 14 Nov 2013 16:06:28 -0300
perf probe: Add '--demangle'/'--no-demangle'
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@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1382947464-31266-1-git-send-email-a3at.mail@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
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 89acc17..6ea9e85 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;
--
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