From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B78D9C678D4 for ; Wed, 1 Mar 2023 23:38:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229990AbjCAXix (ORCPT ); Wed, 1 Mar 2023 18:38:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35162 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229713AbjCAXiN (ORCPT ); Wed, 1 Mar 2023 18:38:13 -0500 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C627F41B41 for ; Wed, 1 Mar 2023 15:38:06 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1677713886; x=1709249886; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=xD5rPq6P/jQ6w9PLq/j9I8SmnPmQHq2Xa5HGzEHRX2c=; b=P4fHyR2KNRjx8JU/FhpKkYUUiEW3PPRoq27JNQdsEGPoiFmJVk1wStZA Au0tu87if2tMaZ7PTCw1bVrinLfxU1+Mc0V/2xnvk3QEg49sPf/HqhtkD +dBfPCTiOisDL1iHsIBU2tmTSm4HOzn7S4b03Gh9bUv17Jk/01HCoX32W +c46FcymeDJjvPhfLfDdLZgQ+aSWLNF72DiURvQgDgJluJuv+OUgWQZcT YB2p3MKlnlU03GVzIJMAx33YhsZCD53wOSKVAneYl/PbsphScABiK8PMK pBdJECcmj4FUyYBsTBea+LvNQAowvbjm2bGjjaBA8D1LVCL81Rk7FZkYR A==; X-IronPort-AV: E=McAfee;i="6500,9779,10636"; a="420818775" X-IronPort-AV: E=Sophos;i="5.98,225,1673942400"; d="scan'208";a="420818775" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Mar 2023 15:37:59 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10636"; a="738826857" X-IronPort-AV: E=Sophos;i="5.98,225,1673942400"; d="scan'208";a="738826857" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by fmsmga008.fm.intel.com with ESMTP; 01 Mar 2023 15:37:59 -0800 From: Ricardo Neri To: Tony Luck , Dave Hansen , "Rafael J. Wysocki" , Reinette Chatre , Dan Williams , Len Brown Cc: Andi Kleen , Stephane Eranian , "Ravi V. Shankar" , Ricardo Neri , linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Ricardo Neri , Nicholas Piggin , Andrew Morton Subject: [PATCH v7 18/24] init/main: Delay initialization of the lockup detector after smp_init() Date: Wed, 1 Mar 2023 15:47:47 -0800 Message-Id: <20230301234753.28582-19-ricardo.neri-calderon@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230301234753.28582-1-ricardo.neri-calderon@linux.intel.com> References: <20230301234753.28582-1-ricardo.neri-calderon@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Certain implementations of the hardlockup detector require support for Inter-Processor Interrupt shorthands. On x86, support for these can only be determined after all the possible CPUs have booted once (in smp_init()). Other architectures may not need such check. lockup_detector_init() only performs the initializations of data structures of the lockup detector. Hence, there are no dependencies on smp_init(). Cc: Andi Kleen Cc: Nicholas Piggin Cc: Andrew Morton Cc: Stephane Eranian Cc: "Ravi V. Shankar" Cc: iommu@lists.linux-foundation.org Cc: linuxppc-dev@lists.ozlabs.org Reviewed-by: Tony Luck Acked-by: Nicholas Piggin Signed-off-by: Ricardo Neri --- Changes since v6: * None Changes since v5: * Introduced this patch Changes since v4: * N/A Changes since v3: * N/A Changes since v2: * N/A Changes since v1: * N/A --- init/main.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/init/main.c b/init/main.c index 4425d1783d5c..d0642a49e2e8 100644 --- a/init/main.c +++ b/init/main.c @@ -1620,9 +1620,11 @@ static noinline void __init kernel_init_freeable(void) rcu_init_tasks_generic(); do_pre_smp_initcalls(); - lockup_detector_init(); smp_init(); + + lockup_detector_init(); + sched_init_smp(); padata_init(); -- 2.25.1