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authorJean Pihet <jean.pihet@linaro.org>2013-12-16 17:43:14 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-01-13 10:06:26 -0300
commitd11416e76b3e2f60ed6cfa7c532d3b6777f66527 (patch)
treed6187d56b211d5856fc5dfa6c2a0416879da010d /tools
parent4887805384751717ef62a8f41439d1d3e4268b39 (diff)
downloadop-kernel-dev-d11416e76b3e2f60ed6cfa7c532d3b6777f66527.zip
op-kernel-dev-d11416e76b3e2f60ed6cfa7c532d3b6777f66527.tar.gz
perf tools: Use the DWARF unwind info only if loaded
Use the info only if it has been found in the .debug_frame section of the ELF binary. Signed-off-by: Jean Pihet <jean.pihet@linaro.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: linaro-kernel@lists.linaro.org Cc: patches@linaro.org Link: http://lkml.kernel.org/r/1387212194-8028-1-git-send-email-jean.pihet@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/unwind.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/tools/perf/util/unwind.c b/tools/perf/util/unwind.c
index 0efd539..416f22b 100644
--- a/tools/perf/util/unwind.c
+++ b/tools/perf/util/unwind.c
@@ -340,10 +340,10 @@ find_proc_info(unw_addr_space_t as, unw_word_t ip, unw_proc_info_t *pi,
/* Check the .debug_frame section for unwinding info */
if (!read_unwind_spec_debug_frame(map->dso, ui->machine, &segbase)) {
memset(&di, 0, sizeof(di));
- dwarf_find_debug_frame(0, &di, ip, 0, map->dso->name,
- map->start, map->end);
- return dwarf_search_unwind_table(as, ip, &di, pi,
- need_unwind_info, arg);
+ if (dwarf_find_debug_frame(0, &di, ip, 0, map->dso->name,
+ map->start, map->end))
+ return dwarf_search_unwind_table(as, ip, &di, pi,
+ need_unwind_info, arg);
}
#endif
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