perf symbols: Add 'arch_cpu_idle' to the list of kernel idle symbols

When testing 'perf top' on a armhf system (32-bit, Orange Pi Zero), I
noticed that 'arch_cpu_idle' dominated, add it to the list of idle
symbols, so that we can see what is that being done when not idle.

Cc: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Link: https://lkml.kernel.org/n/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 01f2c7385e386dbff680640e662d0152b34af879..48efad6d0f90ab4435cb3caf06157a223d2f0a7f 100644 (file)
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -614,6 +614,7 @@ out:
 static bool symbol__is_idle(const char *name)
 {
        const char * const idle_symbols[] = {
+               "arch_cpu_idle",
                "cpu_idle",
                "cpu_startup_entry",
                "intel_idle",