From cba04f3136b658583adb191556f99d087589c1cc Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Wed, 26 Oct 2022 10:27:36 +0300 Subject: [PATCH] perf auxtrace: Fix address filter symbol name match for modules 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 Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim 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 --- tools/perf/util/auxtrace.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index 60d8beb662aa..46ada5ec3f9a 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -2325,11 +2325,19 @@ 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));