tools/power turbostat: CPUID(0x16) leaf shows base, max, and bus frequency

This CPUID leaf is available on Skylake:

CPUID(0x16): base_mhz: 1500 max_mhz: 2200 bus_mhz: 100

Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 18 insertions, 5 deletions

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 7ef8b9feb7f2..4c4470f3ac65 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -2688,7 +2688,7 @@ void decode_misc_enable_msr(void)
 
 void process_cpuid()
 {
-        unsigned int eax, ebx, ecx, edx, max_level;
+        unsigned int eax, ebx, ecx, edx, max_level, max_extended_level;
         unsigned int fms, family, model, stepping;
 
         eax = ebx = ecx = edx = 0;
@@ -2732,9 +2732,9 @@ void process_cpuid()
          * This check is valid for both Intel and AMD.
          */
         ebx = ecx = edx = 0;
-        __get_cpuid(0x80000000, &max_level, &ebx, &ecx, &edx);
+        __get_cpuid(0x80000000, &max_extended_level, &ebx, &ecx, &edx);
 
-        if (max_level >= 0x80000007) {
+        if (max_extended_level >= 0x80000007) {
 
                 /*
                  * Non-Stop TSC is advertised by CPUID.EAX=0x80000007: EDX.bit8
@@ -2765,7 +2765,7 @@ void process_cpuid()
         if (debug)
                 decode_misc_enable_msr();
 
-        if (max_level > 0x15) {
+        if (max_level >= 0x15) {
                 unsigned int eax_crystal;
                 unsigned int ebx_tsc;
 
@@ -2799,6 +2799,19 @@ void process_cpuid()
                         }
                 }
         }
+        if (max_level >= 0x16) {
+                unsigned int base_mhz, max_mhz, bus_mhz, edx;
+
+                /*
+                 * CPUID 16H Base MHz, Max MHz, Bus MHz
+                 */
+                base_mhz = max_mhz = bus_mhz = edx = 0;
+
+                __get_cpuid(0x16, &base_mhz, &max_mhz, &bus_mhz, &edx);
+                if (debug)
+                        fprintf(stderr, "CPUID(0x16): base_mhz: %d max_mhz: %d bus_mhz: %d\n",
+                                base_mhz, max_mhz, bus_mhz);
+        }
 
         if (has_aperf)
                 aperf_mperf_multiplier = get_aperf_mperf_multiplier(family, model);
@@ -3151,7 +3164,7 @@ int get_and_dump_counters(void)
 }
 
 void print_version() {
-        fprintf(stderr, "turbostat version 4.8 26-Sep, 2015"
+        fprintf(stderr, "turbostat version 4.9 22 Nov, 2015"
                 " - Len Brown <lenb@kernel.org>\n");
 }