From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756133AbaBFKvV (ORCPT ); Thu, 6 Feb 2014 05:51:21 -0500 Received: from mga09.intel.com ([134.134.136.24]:38901 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756103AbaBFKvQ (ORCPT ); Thu, 6 Feb 2014 05:51:16 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.95,793,1384329600"; d="scan'208";a="450662643" From: Alexander Shishkin To: Peter Zijlstra Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Frederic Weisbecker , Mike Galbraith , Paul Mackerras , Stephane Eranian , Andi Kleen , Adrian Hunter , Matt Fleming , Alexander Shishkin Subject: [PATCH v1 01/11] x86: Add Intel Processor Trace (INTEL_PT) cpu feature detection Date: Thu, 6 Feb 2014 12:50:24 +0200 Message-Id: <1391683834-29868-2-git-send-email-alexander.shishkin@linux.intel.com> X-Mailer: git-send-email 1.8.4.rc2 In-Reply-To: <1391683834-29868-1-git-send-email-alexander.shishkin@linux.intel.com> References: <1391683834-29868-1-git-send-email-alexander.shishkin@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Intel Processor Trace is an architecture extension that allows for program flow tracing. Signed-off-by: Alexander Shishkin --- arch/x86/include/asm/cpufeature.h | 1 + arch/x86/kernel/cpu/scattered.c | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 89270b4..cb9864f 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -186,6 +186,7 @@ #define X86_FEATURE_DTHERM (7*32+ 7) /* Digital Thermal Sensor */ #define X86_FEATURE_HW_PSTATE (7*32+ 8) /* AMD HW-PState */ #define X86_FEATURE_PROC_FEEDBACK (7*32+ 9) /* AMD ProcFeedbackInterface */ +#define X86_FEATURE_INTEL_PT (7*32+10) /* Intel Processor Trace */ /* Virtualization flags: Linux defined, word 8 */ #define X86_FEATURE_TPR_SHADOW (8*32+ 0) /* Intel TPR Shadow */ diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattered.c index b6f794a..726e6a3 100644 --- a/arch/x86/kernel/cpu/scattered.c +++ b/arch/x86/kernel/cpu/scattered.c @@ -36,6 +36,7 @@ void init_scattered_cpuid_features(struct cpuinfo_x86 *c) { X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006, 0 }, { X86_FEATURE_PLN, CR_EAX, 4, 0x00000006, 0 }, { X86_FEATURE_PTS, CR_EAX, 6, 0x00000006, 0 }, + { X86_FEATURE_INTEL_PT, CR_EBX,25, 0x00000007, 0 }, { X86_FEATURE_APERFMPERF, CR_ECX, 0, 0x00000006, 0 }, { X86_FEATURE_EPB, CR_ECX, 3, 0x00000006, 0 }, { X86_FEATURE_XSAVEOPT, CR_EAX, 0, 0x0000000d, 1 }, -- 1.8.5.2