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[209.132.180.67]) by mx.google.com with ESMTP id g15si3834915pgl.141.2019.01.31.02.10.54; Thu, 31 Jan 2019 02:11:10 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@c-s.fr header.s=mail header.b=WP5Us3dr; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732036AbfAaKI4 (ORCPT + 99 others); Thu, 31 Jan 2019 05:08:56 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:21451 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726500AbfAaKIy (ORCPT ); Thu, 31 Jan 2019 05:08:54 -0500 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 43qwtV2zYrz9tyx9; Thu, 31 Jan 2019 11:08:50 +0100 (CET) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=WP5Us3dr; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id f_Cx-BALeWtb; Thu, 31 Jan 2019 11:08:50 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 43qwtV1wpQz9tyxG; Thu, 31 Jan 2019 11:08:50 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1548929330; bh=2AIBksWfuLJ4qYgayWNoPI2SAljH0iKAyuSsmU07n+w=; h=In-Reply-To:References:From:Subject:To:Cc:Date:From; b=WP5Us3drivsgS2YVCq9tdD0EeiPVQ6pcxfNGVle4zPJ9D8QXYZxE63d+ol1ZRfHpu L/EXFrpDcao9NR3+tBixyqoR+dUvagEuUS3RrIQTWJMK9kjxTAEmqFZws9mjlvnVAo 19JDSeln+qAFx1g+tLo0u0bQHwOUW/L+rS27FViU= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 45ABA8B814; Thu, 31 Jan 2019 11:08:51 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id pA6xrcIFLW1H; Thu, 31 Jan 2019 11:08:51 +0100 (CET) Received: from po16846vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id F0D928B78D; Thu, 31 Jan 2019 11:08:50 +0100 (CET) Received: by po16846vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 959B872E14; Thu, 31 Jan 2019 10:08:50 +0000 (UTC) Message-Id: In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v15 04/13] powerpc: Only use task_struct 'cpu' field on SMP To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Nicholas Piggin Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Thu, 31 Jan 2019 10:08:50 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When moving to CONFIG_THREAD_INFO_IN_TASK, the thread_info 'cpu' field gets moved into task_struct and only defined when CONFIG_SMP is set. This patch ensures that TI_CPU is only used when CONFIG_SMP is set and that task_struct 'cpu' field is not used directly out of SMP code. Signed-off-by: Christophe Leroy Reviewed-by: Nicholas Piggin --- arch/powerpc/kernel/head_fsl_booke.S | 2 ++ arch/powerpc/kernel/misc_32.S | 4 ++++ arch/powerpc/xmon/xmon.c | 2 +- 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index 2386ce2a9c6e..2c21e8642a00 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -243,8 +243,10 @@ set_ivor: li r0,0 stwu r0,THREAD_SIZE-STACK_FRAME_OVERHEAD(r1) +#ifdef CONFIG_SMP CURRENT_THREAD_INFO(r22, r1) stw r24, TI_CPU(r22) +#endif bl early_init diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 57d2ffb2d45c..02b8cdd73792 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -183,10 +183,14 @@ _GLOBAL(low_choose_750fx_pll) or r4,r4,r5 mtspr SPRN_HID1,r4 +#ifdef CONFIG_SMP /* Store new HID1 image */ CURRENT_THREAD_INFO(r6, r1) lwz r6,TI_CPU(r6) slwi r6,r6,2 +#else + li r6, 0 +#endif addis r6,r6,nap_save_hid1@ha stw r4,nap_save_hid1@l(r6) diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c index 757b8499aba2..a0f44f992360 100644 --- a/arch/powerpc/xmon/xmon.c +++ b/arch/powerpc/xmon/xmon.c @@ -2997,7 +2997,7 @@ static void show_task(struct task_struct *tsk) printf("%px %016lx %6d %6d %c %2d %s\n", tsk, tsk->thread.ksp, tsk->pid, rcu_dereference(tsk->parent)->pid, - state, task_thread_info(tsk)->cpu, + state, task_cpu(tsk), tsk->comm); } -- 2.13.3