Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753210AbYJ1GcE (ORCPT ); Tue, 28 Oct 2008 02:32:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752512AbYJ1Gby (ORCPT ); Tue, 28 Oct 2008 02:31:54 -0400 Received: from mga10.intel.com ([192.55.52.92]:24359 "EHLO fmsmga102.fm.intel.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752247AbYJ1Gbx (ORCPT ); Tue, 28 Oct 2008 02:31:53 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.33,497,1220252400"; d="scan'208";a="632327421" Subject: cpu2000(both float and int) 13% regression with 2.6.28-rc1 From: "Zhang, Yanmin" To: Ingo Molnar Cc: LKML Content-Type: text/plain; charset=UTF-8 Date: Tue, 28 Oct 2008 14:32:02 +0800 Message-Id: <1225175522.1685.57.camel@ymzhang> Mime-Version: 1.0 X-Mailer: Evolution 2.21.5 (2.21.5-2.fc9) Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 940 Lines: 31 Comparing with 2.6.27, cpu2000 (both float and int) has about 13% regression with 2.6.28-rc1 on my new-model x86-64 machine. I bisected down to below patch. commit 0afe2db21394820d32646a695eccf3fbfe6ab5c7 Merge: d847059... 43603c8... Author: Ingo Molnar Date: Sat Oct 11 20:23:20 2008 +0200 Merge branch 'x86/unify-cpu-detect' into x86-v28-for-linus-phase4-D Conflicts: arch/x86/kernel/cpu/common.c arch/x86/kernel/signal_64.c include/asm-x86/cpufeature.h When I tried to revert it against 2.6.28-rc2, there are many conflictions. Ingo, Is it possible to break it to small patches, so we can locate the bad source lines? Yanmin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/