From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755909Ab2INQhx (ORCPT ); Fri, 14 Sep 2012 12:37:53 -0400 Received: from mail.x86-64.org ([217.9.48.20]:42784 "EHLO mail.x86-64.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755483Ab2INQhu (ORCPT ); Fri, 14 Sep 2012 12:37:50 -0400 From: Borislav Petkov To: "H. Peter Anvin" , Ingo Molnar , Thomas Gleixner Cc: Andreas Herrmann , LKML , Borislav Petkov Subject: [PATCH] x86: Dump family, model, stepping of the BSP Date: Fri, 14 Sep 2012 18:37:46 +0200 Message-Id: <1347640666-13638-1-git-send-email-bp@amd64.org> X-Mailer: git-send-email 1.7.11.rc1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov When acting on a user bug report, we find ourselves constantly asking for /proc/cpuinfo in order to know the exact family, model, stepping of the CPU in question. Instead of having to ask this, add this to dmesg so that it is visible and no ambiguities can ensue from looking at the official name string of the CPU coming from CPUID and trying to map it to f/m/s. Output then looks like this: [ 0.146041] smpboot: CPU0: AMD FX(tm)-8100 Eight-Core Processor (fam: 15 model: 01 stepping: 02) Signed-off-by: Borislav Petkov --- arch/x86/kernel/cpu/common.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 2ea24da6f7fb..90f7f8f9212f 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1022,14 +1022,16 @@ void __cpuinit print_cpu_info(struct cpuinfo_x86 *c) printk(KERN_CONT "%s ", vendor); if (c->x86_model_id[0]) - printk(KERN_CONT "%s", c->x86_model_id); + printk(KERN_CONT "%s", strim(c->x86_model_id)); else printk(KERN_CONT "%d86", c->x86); + printk(KERN_CONT " (fam: %02x model: %02x", c->x86, c->x86_model); + if (c->x86_mask || c->cpuid_level >= 0) - printk(KERN_CONT " stepping %02x\n", c->x86_mask); + printk(KERN_CONT " stepping: %02x)\n", c->x86_mask); else - printk(KERN_CONT "\n"); + printk(KERN_CONT ")\n"); print_cpu_msr(c); } -- 1.7.11.rc1