perf symbols: Warn on build id mismatch

Add a debug message to indicate that the build id didn't match.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1429904686-16516-1-git-send-email-naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index d99b4424d4e10856a7a4cfdc116d6eba0299717b..9d526a5312b1d5001846138bfe20455d3ad4725f 100644 (file)
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -683,6 +683,7 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
                }
 
                if (!dso__build_id_equal(dso, build_id)) {
+                       pr_debug("%s: build id mismatch for %s.\n", __func__, name);
                        dso->load_errno = DSO_LOAD_ERRNO__MISMATCHING_BUILDID;
                        goto out_elf_end;
                }