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| author | Jean Pihet <jean.pihet@linaro.org> | 2013-12-16 17:43:14 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-01-13 10:06:26 -0300 |
| commit | d11416e76b3e2f60ed6cfa7c532d3b6777f66527 (patch) | |
| tree | d6187d56b211d5856fc5dfa6c2a0416879da010d /tools | |
| parent | 4887805384751717ef62a8f41439d1d3e4268b39 (diff) | |
| download | linux-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.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/tools/perf/util/unwind.c b/tools/perf/util/unwind.c index 0efd5393de85..416f22bf3693 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 |