1 files changed, 30 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)
 {