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 4485EC433FE for ; Thu, 5 May 2022 23:59:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1387184AbiEFADG (ORCPT ); Thu, 5 May 2022 20:03:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35776 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1387141AbiEFABt (ORCPT ); Thu, 5 May 2022 20:01:49 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 622EC612BB for ; Thu, 5 May 2022 16:57:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651795076; x=1683331076; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=Nult8sm5xsB/xmikf6OohjRwLwTEdiOtEi3jvHsqyXk=; b=XbU5pEJw2XhDEePLdjTKFhY54/ePm8S6yhvSvV2w1yv07NbMSgkP0mp6 XJXptj2uC3YuSn9J4SeCqdApp8HAOQwfYyhdr9or+/JJk+r3ovVSHqsxh 52bM9VzCSnO+0HJh1EcferownI9pXDMxq3xJHPv9c1RpakZ/iHeZSTtCx DMb+MxA07d1tLgT6zG9UN435RXF/PNdJPPOtYlgnAA3YavdRHE9kSeQJ5 /tViV01w5OY48FyUKPGXzmHGjsUCJGx6nytbb3W8bIMW7u03YBxdSxuJq 2ImK/5xa+r3YvdkD7L6EUSwOCGoRsH9JgXfw0Aj2PChK7mJXCZjNLtE68 w==; X-IronPort-AV: E=McAfee;i="6400,9594,10338"; a="250283648" X-IronPort-AV: E=Sophos;i="5.91,203,1647327600"; d="scan'208";a="250283648" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2022 16:57:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,203,1647327600"; d="scan'208";a="694914415" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by orsmga004.jf.intel.com with ESMTP; 05 May 2022 16:57:52 -0700 From: Ricardo Neri To: Thomas Gleixner , x86@kernel.org Cc: Tony Luck , Andi Kleen , Stephane Eranian , Andrew Morton , Joerg Roedel , Suravee Suthikulpanit , David Woodhouse , Lu Baolu , Nicholas Piggin , "Ravi V. Shankar" , Ricardo Neri , iommu@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Ricardo Neri Subject: [PATCH v6 20/29] init/main: Delay initialization of the lockup detector after smp_init() Date: Thu, 5 May 2022 16:59:59 -0700 Message-Id: <20220506000008.30892-21-ricardo.neri-calderon@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220506000008.30892-1-ricardo.neri-calderon@linux.intel.com> References: <20220506000008.30892-1-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 Cc: x86@kernel.org Reviewed-by: Tony Luck Signed-off-by: Ricardo Neri --- 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 98182c3c2c4b..62c52c9e4c2b 100644 --- a/init/main.c +++ b/init/main.c @@ -1600,9 +1600,11 @@ 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(); -- 2.17.1