Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754262AbdCBBLB (ORCPT ); Wed, 1 Mar 2017 20:11:01 -0500 Received: from mail-qk0-f194.google.com ([209.85.220.194]:35237 "EHLO mail-qk0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753866AbdCBBJl (ORCPT ); Wed, 1 Mar 2017 20:09:41 -0500 From: Len Brown To: linux-pm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Len Brown Subject: [PATCH 19/44] tools/power turbostat: decode MSR_MISC_FEATURE_CONTROL Date: Wed, 1 Mar 2017 00:27:23 -0500 Message-Id: <33148d671cc191fceaca5017e1bb060e9f30fbf7.1488345270.git.len.brown@intel.com> X-Mailer: git-send-email 2.11.0.161.g6610af872 In-Reply-To: <20170301052748.27810-1-lenb@kernel.org> References: <20170301052748.27810-1-lenb@kernel.org> In-Reply-To: <678a3bd1b3de6d2ebf604e7d708bc8150bb667e9.1488345270.git.len.brown@intel.com> References: <678a3bd1b3de6d2ebf604e7d708bc8150bb667e9.1488345270.git.len.brown@intel.com> Reply-To: Len Brown Organization: Intel Open Source Technology Center Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2973 Lines: 93 From: Len Brown useful for observing if the BIOS disabled prefetch Not architectural, but docuemented as present on NHM, SNB and is present on others. Signed-off-by: Len Brown --- tools/power/x86/turbostat/turbostat.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 1011b5f7f21f..2f033f3d2a21 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -102,6 +102,7 @@ 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 */ +unsigned int has_misc_feature_control; #define RAPL_PKG (1 << 0) /* 0x610 MSR_PKG_POWER_LIMIT */ @@ -2466,6 +2467,7 @@ void check_permissions() * * Side effect: * sets global pkg_cstate_limit to decode MSR_PKG_CST_CONFIG_CONTROL + * sets has_misc_feature_control */ int probe_nhm_msrs(unsigned int family, unsigned int model) { @@ -2496,6 +2498,7 @@ int probe_nhm_msrs(unsigned int family, unsigned int model) case INTEL_FAM6_IVYBRIDGE: /* IVB */ case INTEL_FAM6_IVYBRIDGE_X: /* IVB Xeon */ pkg_cstate_limits = snb_pkg_cstate_limits; + has_misc_feature_control = 1; break; case INTEL_FAM6_HASWELL_CORE: /* HSW */ case INTEL_FAM6_HASWELL_X: /* HSX */ @@ -2510,9 +2513,11 @@ int probe_nhm_msrs(unsigned int family, unsigned int model) case INTEL_FAM6_KABYLAKE_MOBILE: /* KBL */ case INTEL_FAM6_KABYLAKE_DESKTOP: /* KBL */ pkg_cstate_limits = hsw_pkg_cstate_limits; + has_misc_feature_control = 1; break; case INTEL_FAM6_SKYLAKE_X: /* SKX */ pkg_cstate_limits = skx_pkg_cstate_limits; + has_misc_feature_control = 1; break; case INTEL_FAM6_ATOM_SILVERMONT1: /* BYT */ no_MSR_MISC_PWR_MGMT = 1; @@ -3579,6 +3584,21 @@ void decode_misc_enable_msr(void) msr & MSR_IA32_MISC_ENABLE_TURBO_DISABLE ? "No-" : ""); } +void decode_misc_feature_control(void) +{ + unsigned long long msr; + + if (!has_misc_feature_control) + return; + + if (!get_msr(base_cpu, MSR_MISC_FEATURE_CONTROL, &msr)) + fprintf(outf, "cpu%d: MSR_MISC_FEATURE_CONTROL: 0x%08llx (%sL2-Prefetch %sL2-Prefetch-pair %sL1-Prefetch %sL1-IP-Prefetch)\n", + base_cpu, msr, + msr & (0 << 0) ? "No-" : "", + msr & (1 << 0) ? "No-" : "", + msr & (2 << 0) ? "No-" : "", + msr & (3 << 0) ? "No-" : ""); +} /* * Decode MSR_MISC_PWR_MGMT * @@ -3725,6 +3745,7 @@ void process_cpuid() if (debug) decode_misc_enable_msr(); + if (max_level >= 0x7 && debug) { int has_sgx; @@ -3852,6 +3873,9 @@ void process_cpuid() if (!access("/sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz", R_OK)) BIC_PRESENT(BIC_GFXMHz); + if (debug) + decode_misc_feature_control(); + return; } -- 2.11.0.161.g6610af872