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perf tools: Demangle kernel and kernel module symbols too
author
Avi Kivity
<avi@cloudius-systems.com>
Wed, 22 Jan 2014 19:58:46 +0000
(21:58 +0200)
committer
Arnaldo Carvalho de Melo
<acme@redhat.com>
Mon, 27 Jan 2014 14:47:27 +0000
(11:47 -0300)
Some kernels contain C++ code, and thus their symbols need to be
demangled. This allows 'perf kvm top' to generate readable output.
Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link:
http://lkml.kernel.org/r/26f71bf5bf7ee1408e3f1a803556d5df18223ef1.1390420726.git.avi@cloudius-systems.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/symbol-elf.c
patch
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diff --git
a/tools/perf/util/symbol-elf.c
b/tools/perf/util/symbol-elf.c
index
7594567
..
8f12f0f
100644
(file)
--- a/
tools/perf/util/symbol-elf.c
+++ b/
tools/perf/util/symbol-elf.c
@@
-922,6
+922,7
@@
int dso__load_sym(struct dso *dso, struct map *map,
(u64)shdr.sh_offset);
sym.st_value -= shdr.sh_addr - shdr.sh_offset;
}
+new_symbol:
/*
* We need to figure out if the object was created from C++ sources
* DWARF DW_compile_unit has this, but we don't always have access
@@
-933,7
+934,6
@@
int dso__load_sym(struct dso *dso, struct map *map,
if (demangled != NULL)
elf_name = demangled;
}
-new_symbol:
f = symbol__new(sym.st_value, sym.st_size,
GELF_ST_BIND(sym.st_info), elf_name);
free(demangled);