From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753187Ab0AZX2I (ORCPT ); Tue, 26 Jan 2010 18:28:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752640Ab0AZX2G (ORCPT ); Tue, 26 Jan 2010 18:28:06 -0500 Received: from e4.ny.us.ibm.com ([32.97.182.144]:38642 "EHLO e4.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752563Ab0AZX2E (ORCPT ); Tue, 26 Jan 2010 18:28:04 -0500 Subject: [PATCHv2 0/2] sched: arch_scale_smt_powers v2 From: Joel Schopp To: Peter Zijlstra Cc: ego@in.ibm.com, linuxppc-dev@lists.ozlabs.org, Ingo Molnar , linux-kernel@vger.kernel.org, benh@kernel.crashing.org, jschopp@austin.ibm.com In-Reply-To: <1264017638.5717.121.camel@jschopp-laptop> References: <1264017638.5717.121.camel@jschopp-laptop> Content-Type: text/plain; charset="UTF-8" Date: Tue, 26 Jan 2010 17:27:59 -0600 Message-ID: <1264548479.12239.54.camel@jschopp-laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The new Power7 processor has 4 way SMT. This 4 way SMT benefits from dynamic power updates that arch_scale_smt_power was designed to provide. The first patch fixes a generic scheduler bug necessary for arch_scale_smt to properly function. The second patch implements arch_scale_smt_power for powerpc, and in particular for Power7 processors. Version 2 changes: - Drop Patch 1 from the original series since it's in the -tip tree now - Move enabling the cpu feature into it's own patch (now patch 1) - Add stubbing out broken x86 implementation to patch 1 - clean up coding style in patch 2 --- Joel Schopp (2): powerpc: implement arch_scale_smt_power for Power7 sched: enable ARCH_POWER arch/powerpc/include/asm/cputable.h | 3 +- arch/powerpc/kernel/smp.c | 52 ++++++++++++++++++++++++++++++++++++ arch/x86/kernel/cpu/sched.c | 6 +--- kernel/sched_features.h | 2 - 4 files changed, 57 insertions(+), 6 deletions(-) From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e2.ny.us.ibm.com (e2.ny.us.ibm.com [32.97.182.142]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e2.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 5088CB7CE2 for ; Wed, 27 Jan 2010 10:28:05 +1100 (EST) Received: from d01relay01.pok.ibm.com (d01relay01.pok.ibm.com [9.56.227.233]) by e2.ny.us.ibm.com (8.14.3/8.13.1) with ESMTP id o0QNISqe014391 for ; Tue, 26 Jan 2010 18:18:29 -0500 Received: from d01av02.pok.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by d01relay01.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o0QNS2lt118346 for ; Tue, 26 Jan 2010 18:28:02 -0500 Received: from d01av02.pok.ibm.com (loopback [127.0.0.1]) by d01av02.pok.ibm.com (8.14.3/8.13.1/NCO v10.0 AVout) with ESMTP id o0QNS1U6023848 for ; Tue, 26 Jan 2010 21:28:01 -0200 Subject: [PATCHv2 0/2] sched: arch_scale_smt_powers v2 From: Joel Schopp To: Peter Zijlstra In-Reply-To: <1264017638.5717.121.camel@jschopp-laptop> References: <1264017638.5717.121.camel@jschopp-laptop> Content-Type: text/plain; charset="UTF-8" Date: Tue, 26 Jan 2010 17:27:59 -0600 Message-ID: <1264548479.12239.54.camel@jschopp-laptop> Mime-Version: 1.0 Cc: ego@in.ibm.com, linux-kernel@vger.kernel.org, Ingo Molnar , linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The new Power7 processor has 4 way SMT. This 4 way SMT benefits from dynamic power updates that arch_scale_smt_power was designed to provide. The first patch fixes a generic scheduler bug necessary for arch_scale_smt to properly function. The second patch implements arch_scale_smt_power for powerpc, and in particular for Power7 processors. Version 2 changes: - Drop Patch 1 from the original series since it's in the -tip tree now - Move enabling the cpu feature into it's own patch (now patch 1) - Add stubbing out broken x86 implementation to patch 1 - clean up coding style in patch 2 --- Joel Schopp (2): powerpc: implement arch_scale_smt_power for Power7 sched: enable ARCH_POWER arch/powerpc/include/asm/cputable.h | 3 +- arch/powerpc/kernel/smp.c | 52 ++++++++++++++++++++++++++++++++++++ arch/x86/kernel/cpu/sched.c | 6 +--- kernel/sched_features.h | 2 - 4 files changed, 57 insertions(+), 6 deletions(-)