diff options
| author | Masami Hiramatsu <mhriamat@kernel.org> | 2021-07-03 18:35:18 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-07-07 16:28:07 +0300 |
| commit | eb4717f733b5941a29ea4e0aec3227a0e0770487 (patch) | |
| tree | 4820e2ef9e5cebee999c6ca8b5122801713392ea | |
| parent | 44c2cd80f2468f60f3f12b871e47fe435fea3759 (diff) | |
| download | linux-eb4717f733b5941a29ea4e0aec3227a0e0770487.tar.xz | |
perf probe: Fix debuginfo__new() to enable build-id based debuginfo
Fix debuginfo__new() to set the build-id to dso before
dso__read_binary_type_filename() so that it can find
DSO_BINARY_TYPE__BUILDID_DEBUGINFO debuginfo correctly.
However, this may not change the result, because elfutils (libdwfl) has
its own debuginfo finder. With/without this patch, the perf probe
correctly find the debuginfo file.
This is just a failsafe and keep code's sanity (if you use
dso__read_binary_type_filename(), you must set the build-id to the dso.)
Reported-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Masami Hiramatsu <mhriamat@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Stefan Liebler <stli@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Link: http://lore.kernel.org/lkml/162532651863.393143.11692691321219235810.stgit@devnote2
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/probe-finder.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index b029c29ce227..02ef0d78053b 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -118,12 +118,17 @@ struct debuginfo *debuginfo__new(const char *path) char buf[PATH_MAX], nil = '\0'; struct dso *dso; struct debuginfo *dinfo = NULL; + struct build_id bid; /* Try to open distro debuginfo files */ dso = dso__new(path); if (!dso) goto out; + /* Set the build id for DSO_BINARY_TYPE__BUILDID_DEBUGINFO */ + if (is_regular_file(path) && filename__read_build_id(path, &bid) > 0) + dso__set_build_id(dso, &bid); + for (type = distro_dwarf_types; !dinfo && *type != DSO_BINARY_TYPE__NOT_FOUND; type++) { |