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| author |   Len Brown <len.brown@intel.com> | 2015-11-23 02:30:51 -0500 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2016-02-17 01:42:20 -0500 |
| commit | 61a87ba7893a256d86c7eea6a7ab10d38ccac9b2 (patch) | |
| tree | 2a7e6bf3e94d6bd6218bc31658ecca669c1faf6d /tools/power | |
| parent | tools/power turbostat: decode more CPUID fields (diff) | |
| download | linux-dev-61a87ba7893a256d86c7eea6a7ab10d38ccac9b2.tar.xz linux-dev-61a87ba7893a256d86c7eea6a7ab10d38ccac9b2.zip | |
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>
Diffstat (limited to 'tools/power')
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.c | 23 |
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"); } |