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