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perf auxtrace: Fix address filter symbol name match for modules

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commit cba04f3136 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: 1b36c03e35 ("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>
This commit is contained in:
Adrian Hunter 2022-10-26 10:27:36 +03:00 committed by Greg Kroah-Hartman
parent 028cf78074
commit 24051c7bc7
1 changed files with 9 additions and 1 deletions
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10
tools/perf/util/auxtrace.c
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@ -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));