2 files changed, 31 insertions, 0 deletions

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index c0c36965fff0..f55c18da1e40 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -573,6 +573,36 @@ static u8 kallsyms2elf_type(char type)
         return isupper(type) ? STB_GLOBAL : STB_LOCAL;
 }
 
+bool symbol__is_idle(struct symbol *sym)
+{
+        const char * const idle_symbols[] = {
+                "cpu_idle",
+                "intel_idle",
+                "default_idle",
+                "native_safe_halt",
+                "enter_idle",
+                "exit_idle",
+                "mwait_idle",
+                "mwait_idle_with_hints",
+                "poll_idle",
+                "ppc64_runlatch_off",
+                "pseries_dedicated_idle_sleep",
+                NULL
+        };
+
+        int i;
+
+        if (!sym)
+                return false;
+
+        for (i = 0; idle_symbols[i]; i++) {
+                if (!strcmp(idle_symbols[i], sym->name))
+                        return true;
+        }
+
+        return false;
+}
+
 static int map__process_kallsym_symbol(void *arg, const char *name,
                                        char type, u64 start)
 {
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 07de8fea2f48..ad13c5d50b91 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -240,6 +240,7 @@ size_t symbol__fprintf(struct symbol *sym, FILE *fp);
 bool symbol_type__is_a(char symbol_type, enum map_type map_type);
 bool symbol__restricted_filename(const char *filename,
                                  const char *restricted_filename);
+bool symbol__is_idle(struct symbol *sym);
 
 int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
                   struct symsrc *runtime_ss, symbol_filter_t filter,