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authorAdrian Hunter <adrian.hunter@intel.com>2022-10-26 10:27:36 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-11-03 17:52:29 +0300
commit24051c7bc7ea76145e7e84398c998a57679d7c66 (patch)
tree43f79ccce105b24be2fd54025fd2c445f38fae71 /tools
parent028cf780743eea79abffa7206b9dcfc080ad3546 (diff)
downloadlinux-24051c7bc7ea76145e7e84398c998a57679d7c66.tar.xz
perf auxtrace: Fix address filter symbol name match for modules
commit cba04f3136b658583adb191556f99d087589c1cc upstream. For modules, names from kallsyms__parse() contain the module name which meant that module symbols did not match exactly by name. Fix by matching the name string up to the separating tab character. Fixes: 1b36c03e356936d6 ("perf record: Add support for using symbols in address filters") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20221026072736.2982-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/auxtrace.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
index f7c4dcb9d582..05cbdb6e6be8 100644
--- a/tools/perf/util/auxtrace.c
+++ b/tools/perf/util/auxtrace.c
@@ -1678,11 +1678,19 @@ struct sym_args {
bool near;
};
+static bool kern_sym_name_match(const char *kname, const char *name)
+{
+ size_t n = strlen(name);
+
+ return !strcmp(kname, name) ||
+ (!strncmp(kname, name, n) && kname[n] == '\t');
+}
+
static bool kern_sym_match(struct sym_args *args, const char *name, char type)
{
/* A function with the same name, and global or the n'th found or any */
return kallsyms__is_function(type) &&
- !strcmp(name, args->name) &&
+ kern_sym_name_match(name, args->name) &&
((args->global && isupper(type)) ||
(args->selected && ++(args->cnt) == args->idx) ||
(!args->global && !args->selected));