tools/power turbostat: Read extended processor family from CPUID

This fixes the reported family on modern AMD processors (e.g. Ryzen,
which is family 0x17). Previously these processors all showed up as
family 0xf.

See the document
https://support.amd.com/TechDocs/56255_OSRR.pdf
section CPUID_Fn00000001_EAX for how to calculate the family
from the BaseFamily and ExtFamily values.

This matches the code in arch/x86/lib/cpu.c

Signed-off-by: Calvin Walton <[email protected]>
Signed-off-by: Len Brown <[email protected]>

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 2b0135599f37f0002f0ff34cf45c0fac692c9b46..6c8effebf7c59c81615c4967ff9a0b4dd98ee02a 100644 (file)
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -4457,7 +4457,9 @@ void process_cpuid()
        family = (fms >> 8) & 0xf;
        model = (fms >> 4) & 0xf;
        stepping = fms & 0xf;
-       if (family == 6 || family == 0xf)
+       if (family == 0xf)
+               family += (fms >> 20) & 0xff;
+       if (family >= 6)
                model += ((fms >> 16) & 0xf) << 4;
 
        if (!quiet) {