From 7f5c258e1ce1e0909d3195694ac79f143051e513 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Tue, 1 Dec 2015 01:36:39 -0500 Subject: [PATCH] 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 --- tools/power/x86/turbostat/turbostat.c | 124 ++++++++++++++++++++++++-- 1 file changed, 118 insertions(+), 6 deletions(-) diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 4c4470f3ac65..af3b955aad1d 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -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 \n"); }