diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2009-07-20 21:14:12 +0400 |
|---|---|---|
| committer | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-07-22 20:05:57 +0400 |
| commit | 28ac909b49a155856c957d080f8a796b3c1d1f3e (patch) | |
| tree | cdc46c36edc29c1847cabd98b7f5e35e2c39e778 | |
| parent | dfe5a50461db90fab901cb697eff0d3d2e9fd229 (diff) | |
| download | linux-28ac909b49a155856c957d080f8a796b3c1d1f3e.tar.xz | |
perf symbol: C++ demangling
[acme@doppio ~]$ perf report -s comm,dso,symbol -C firefox -d /usr/lib64/xulrunner-1.9.1/libxul.so | grep :: | head
2.21% [.] nsDeque::Push(void*)
1.78% [.] GraphWalker::DoWalk(nsDeque&)
1.30% [.] GCGraphBuilder::AddNode(void*, nsCycleCollectionParticipant*)
1.27% [.] XPCWrappedNative::CallMethod(XPCCallContext&, XPCWrappedNative::CallMode)
1.18% [.] imgContainer::DrawFrameTo(gfxIImageFrame*, gfxIImageFrame*, nsRect&)
1.13% [.] nsDeque::PopFront()
1.11% [.] nsGlobalWindow::RunTimeout(nsTimeout*)
0.97% [.] nsXPConnect::Traverse(void*, nsCycleCollectionTraversalCallback&)
0.95% [.] nsJSEventListener::cycleCollection::Traverse(void*, nsCycleCollectionTraversalCallback&)
0.95% [.] nsCOMPtr_base::~nsCOMPtr_base()
[acme@doppio ~]$
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Suggested-by: Clark Williams <williams@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090720171412.GB10410@ghostprotocols.net>
| -rw-r--r-- | tools/perf/Makefile | 2 | ||||
| -rw-r--r-- | tools/perf/util/symbol.c | 21 |
2 files changed, 20 insertions, 3 deletions
diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 7822b3d6baca..a5e9b876ca09 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -345,7 +345,7 @@ BUILTIN_OBJS += builtin-stat.o BUILTIN_OBJS += builtin-top.o PERFLIBS = $(LIB_FILE) -EXTLIBS = +EXTLIBS = -lbfd # # Platform specific tweaks diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index f40266b4845d..98aee922acca 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -6,9 +6,15 @@ #include <libelf.h> #include <gelf.h> #include <elf.h> +#include <bfd.h> const char *sym_hist_filter; +#ifndef DMGL_PARAMS +#define DMGL_PARAMS (1 << 0) /* Include function args */ +#define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */ +#endif + static struct symbol *symbol__new(u64 start, u64 len, const char *name, unsigned int priv_size, u64 obj_start, int verbose) @@ -571,6 +577,8 @@ static int dso__load_sym(struct dso *self, int fd, const char *name, NULL) != NULL); elf_symtab__for_each_symbol(syms, nr_syms, index, sym) { struct symbol *f; + const char *name; + char *demangled; u64 obj_start; struct section *section = NULL; int is_label = elf_sym__is_label(&sym); @@ -609,10 +617,19 @@ static int dso__load_sym(struct dso *self, int fd, const char *name, goto out_elf_end; } } + /* + * 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 + * to it... + */ + name = elf_sym__name(&sym, symstrs); + demangled = bfd_demangle(NULL, name, DMGL_PARAMS | DMGL_ANSI); + if (demangled != NULL) + name = demangled; - f = symbol__new(sym.st_value, sym.st_size, - elf_sym__name(&sym, symstrs), + f = symbol__new(sym.st_value, sym.st_size, name, self->sym_priv_size, obj_start, verbose); + free(demangled); if (!f) goto out_elf_end; |