leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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>
This commit is contained in:
Len Brown 2015-11-23 02:30:51 -05:00
parent 69807a638f
commit 61a87ba789
1 changed files with 18 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
tools/power/x86/turbostat/turbostat.c
View File

@ -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");
}