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tools/power turbostat: decode HWP registers 

# turbostat --debug
...
CPUID(6): ... HWP, HWPnotify, HWPwindow, HWPepp, HWPpkg ...
...
cpu0: MSR_PM_ENABLE: 0x00000001 (HWP)
cpu0: MSR_HWP_CAPABILITIES: 0x01050916 (high 0x16 guar 0x9 eff 0x5 low 0x1)
cpu0: MSR_HWP_REQUEST: 0x80001604 (min 0x4 max 0x16 des 0x0 epp 0x80 window 0x0 pkg 0x0)
cpu0: MSR_HWP_INTERRUPT: 0x00000001 (EN_Guaranteed_Perf_Change, Dis_Excursion_Min)
cpu0: MSR_HWP_STATUS: 0x00000000 (No-Guaranteed_Perf_Change, No-Excursion_Min)

Signed-off-by: Len Brown <len.brown@intel.com>
hifive-unleashed-5.1
Len Brown 2015-12-01 01:36:39 -05:00
parent 670e27d809
commit 7f5c258e1c
1 changed files with 118 additions and 6 deletions
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124
tools/power/x86/turbostat/turbostat.c
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@ -98,6 +98,12 @@ unsigned int crystal_hz;
unsigned long long tsc_hz;
int base_cpu;
double discover_bclk(unsigned int family, unsigned int model);
unsigned int has_hwp; /* IA32_PM_ENABLE, IA32_HWP_CAPABILITIES */
/* IA32_HWP_REQUEST, IA32_HWP_STATUS */
unsigned int has_hwp_notify; /* IA32_HWP_INTERRUPT */
unsigned int has_hwp_activity_window; /* IA32_HWP_REQUEST[bits 41:32] */
unsigned int has_hwp_epp; /* IA32_HWP_REQUEST[bits 31:24] */
unsigned int has_hwp_pkg; /* IA32_HWP_REQUEST_PKG */
#define RAPL_PKG (1 << 0)
/* 0x610 MSR_PKG_POWER_LIMIT */
@ -2041,6 +2047,97 @@ int print_epb(struct thread_data *t, struct core_data *c, struct pkg_data *p)
return 0;
}
/*
* print_hwp()
* Decode the MSR_HWP_CAPABILITIES
*/
int print_hwp(struct thread_data *t, struct core_data *c, struct pkg_data *p)
{
unsigned long long msr;
int cpu;
if (!has_hwp)
return 0;
cpu = t->cpu_id;
/* MSR_HWP_CAPABILITIES is per-package */
if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE) || !(t->flags & CPU_IS_FIRST_CORE_IN_PACKAGE))
return 0;
if (cpu_migrate(cpu)) {
fprintf(stderr, "Could not migrate to CPU %d\n", cpu);
return -1;
}
if (get_msr(cpu, MSR_PM_ENABLE, &msr))
return 0;
fprintf(stderr, "cpu%d: MSR_PM_ENABLE: 0x%08llx (%sHWP)\n",
cpu, msr, (msr & (1 << 0)) ? "" : "No-");
/* MSR_PM_ENABLE[1] == 1 if HWP is enabled and MSRs visible */
if ((msr & (1 << 0)) == 0)
return 0;
if (get_msr(cpu, MSR_HWP_CAPABILITIES, &msr))
return 0;
fprintf(stderr, "cpu%d: MSR_HWP_CAPABILITIES: 0x%08llx "
"(high 0x%x guar 0x%x eff 0x%x low 0x%x)\n",
cpu, msr,
(unsigned int)HWP_HIGHEST_PERF(msr),
(unsigned int)HWP_GUARANTEED_PERF(msr),
(unsigned int)HWP_MOSTEFFICIENT_PERF(msr),
(unsigned int)HWP_LOWEST_PERF(msr));
if (get_msr(cpu, MSR_HWP_REQUEST, &msr))
return 0;
fprintf(stderr, "cpu%d: MSR_HWP_REQUEST: 0x%08llx "
"(min 0x%x max 0x%x des 0x%x epp 0x%x window 0x%x pkg 0x%x)\n",
cpu, msr,
(unsigned int)(((msr) >> 0) & 0xff),
(unsigned int)(((msr) >> 8) & 0xff),
(unsigned int)(((msr) >> 16) & 0xff),
(unsigned int)(((msr) >> 24) & 0xff),
(unsigned int)(((msr) >> 32) & 0xff3),
(unsigned int)(((msr) >> 42) & 0x1));
if (has_hwp_pkg) {
if (get_msr(cpu, MSR_HWP_REQUEST_PKG, &msr))
return 0;
fprintf(stderr, "cpu%d: MSR_HWP_REQUEST_PKG: 0x%08llx "
"(min 0x%x max 0x%x des 0x%x epp 0x%x window 0x%x)\n",
cpu, msr,
(unsigned int)(((msr) >> 0) & 0xff),
(unsigned int)(((msr) >> 8) & 0xff),
(unsigned int)(((msr) >> 16) & 0xff),
(unsigned int)(((msr) >> 24) & 0xff),
(unsigned int)(((msr) >> 32) & 0xff3));
}
if (has_hwp_notify) {
if (get_msr(cpu, MSR_HWP_INTERRUPT, &msr))
return 0;
fprintf(stderr, "cpu%d: MSR_HWP_INTERRUPT: 0x%08llx "
"(%s_Guaranteed_Perf_Change, %s_Excursion_Min)\n",
cpu, msr,
((msr) & 0x1) ? "EN" : "Dis",
((msr) & 0x2) ? "EN" : "Dis");
}
if (get_msr(cpu, MSR_HWP_STATUS, &msr))
return 0;
fprintf(stderr, "cpu%d: MSR_HWP_STATUS: 0x%08llx "
"(%sGuaranteed_Perf_Change, %sExcursion_Min)\n",
cpu, msr,
((msr) & 0x1) ? "" : "No-",
((msr) & 0x2) ? "" : "No-");
return 0;
}
/*
* print_perf_limit()
@ -2686,6 +2783,7 @@ void decode_misc_enable_msr(void)
msr & (1 << 18) ? "MONITOR" : "");
}
void process_cpuid()
{
unsigned int eax, ebx, ecx, edx, max_level, max_extended_level;
@ -2753,14 +2851,25 @@ void process_cpuid()
has_aperf = ecx & (1 << 0);
do_dts = eax & (1 << 0);
do_ptm = eax & (1 << 6);
has_hwp = eax & (1 << 7);
has_hwp_notify = eax & (1 << 8);
has_hwp_activity_window = eax & (1 << 9);
has_hwp_epp = eax & (1 << 10);
has_hwp_pkg = eax & (1 << 11);
has_epb = ecx & (1 << 3);
if (debug)
fprintf(stderr, "CPUID(6): %sAPERF, %sDTS, %sPTM, %sEPB\n",
has_aperf ? "" : "No ",
do_dts ? "" : "No ",
do_ptm ? "" : "No ",
has_epb ? "" : "No ");
fprintf(stderr, "CPUID(6): %sAPERF, %sDTS, %sPTM, %sHWP, "
"%sHWPnotify, %sHWPwindow, %sHWPepp, %sHWPpkg, %sEPB\n",
has_aperf ? "" : "No-",
do_dts ? "" : "No-",
do_ptm ? "" : "No-",
has_hwp ? "" : "No-",
has_hwp_notify ? "" : "No-",
has_hwp_activity_window ? "" : "No-",
has_hwp_epp ? "" : "No-",
has_hwp_pkg ? "" : "No-",
has_epb ? "" : "No-");
if (debug)
decode_misc_enable_msr();
@ -3087,6 +3196,9 @@ void turbostat_init()
process_cpuid();
if (debug)
for_all_cpus(print_hwp, ODD_COUNTERS);
if (debug)
for_all_cpus(print_epb, ODD_COUNTERS);
@ -3164,7 +3276,7 @@ int get_and_dump_counters(void)
}
void print_version() {
fprintf(stderr, "turbostat version 4.9 22 Nov, 2015"
fprintf(stderr, "turbostat version 4.10 10 Dec, 2015"
" - Len Brown <lenb@kernel.org>\n");
}