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authorAnton Blanchard <anton@samba.org>2016-08-13 11:55:33 +1000
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-08-15 16:49:57 -0300
commit50de1a0c54cdbc69a6dbcbc323f53daf95a4050e (patch)
treeeddffc76a0111b2ecdad105f949f2bfede7b906a /tools
parent71ac899b5ed7edfd8fa2a4e075194380b1de2d7f (diff)
downloadlinux-stericsson-50de1a0c54cdbc69a6dbcbc323f53daf95a4050e.tar.gz
perf symbols: Fix annotation of objects with debuginfo files
Commit 73cdf0c6ea9c ("perf symbols: Record text offset in dso to calculate objdump address") started storing the offset of the text section for all DSOs: if (elf_section_by_name(elf, &ehdr, &tshdr, ".text", NULL)) dso->text_offset = tshdr.sh_addr - tshdr.sh_offset; Unfortunately this breaks debuginfo files, because we need to calculate the offset of the text section in the associated executable file. As a result perf annotate returns junk for all debuginfo files. Fix this by using runtime_ss->elf which should point at the executable when parsing a debuginfo file. Signed-off-by: Anton Blanchard <anton@samba.org> Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Tested-by: Wang Nan <wangnan0@huawei.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: stable@vger.kernel.org # v4.6+ Fixes: 73cdf0c6ea9c ("perf symbols: Record text offset in dso to calculate objdump address") Link: http://lkml.kernel.org/r/20160813115533.6de17912@kryten Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/symbol-elf.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index a34321e9b44d..a811c13a74d6 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -837,7 +837,8 @@ int dso__load_sym(struct dso *dso, struct map *map,
sec = syms_ss->symtab;
shdr = syms_ss->symshdr;
- if (elf_section_by_name(elf, &ehdr, &tshdr, ".text", NULL))
+ if (elf_section_by_name(runtime_ss->elf, &runtime_ss->ehdr, &tshdr,
+ ".text", NULL))
dso->text_offset = tshdr.sh_addr - tshdr.sh_offset;
if (runtime_ss->opdsec)