From patchwork Wed May 31 11:25:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 13261992 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 0ACACC77B7C for ; Wed, 31 May 2023 11:26:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235274AbjEaL0M (ORCPT ); Wed, 31 May 2023 07:26:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36854 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232888AbjEaL0L (ORCPT ); Wed, 31 May 2023 07:26:11 -0400 Received: from post.baikalelectronics.com (post.baikalelectronics.com [213.79.110.86]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A5719D9; Wed, 31 May 2023 04:26:09 -0700 (PDT) Received: from post.baikalelectronics.com (localhost.localdomain [127.0.0.1]) by post.baikalelectronics.com (Proxmox) with ESMTP id C53D1E0E1C; Wed, 31 May 2023 14:26:08 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= baikalelectronics.ru; h=cc:cc:content-transfer-encoding :content-type:content-type:date:from:from:in-reply-to:message-id :mime-version:references:reply-to:subject:subject:to:to; s=post; bh=rDVPfhGEyYaKZ/wYe36O1O/Fvo/RdUNSXrMV08kwDqo=; b=Z7t4Hjyc8npA bvL1aWDPH/h84BZBNv/oZf2Tpctb9Q/S3EpETMTlIZgyz5gVB2NHTAkYP0SfMnG+ HXyQFLc7e2E1ViPNfGlyjb3rXvxdqRTtoRXZ8b/2sXOaC5KEt6IGOl0gDF77YPG+ UnbEjfq37aQPm571IaQcVgakcqctd5M= Received: from mail.baikal.int (mail.baikal.int [192.168.51.25]) by post.baikalelectronics.com (Proxmox) with ESMTP id 96DA0E0DE3; Wed, 31 May 2023 14:26:08 +0300 (MSK) Received: from localhost (10.8.30.6) by mail (192.168.51.25) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 31 May 2023 14:26:08 +0300 From: Serge Semin To: Bjorn Helgaas , Lorenzo Pieralisi , Jingoo Han , Gustavo Pimentel , Manivannan Sadhasivam , Yoshihiro Shimoda , Rob Herring , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= CC: Serge Semin , Serge Semin , Alexey Malahov , Pavel Parkhomenko , , Subject: [PATCH RESEND v6 03/11] PCI: bt1: Enable async probe type Date: Wed, 31 May 2023 14:25:54 +0300 Message-ID: <20230531112602.7222-4-Sergey.Semin@baikalelectronics.ru> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230531112602.7222-1-Sergey.Semin@baikalelectronics.ru> References: <20230531112602.7222-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-Originating-IP: [10.8.30.6] X-ClientProxiedBy: MAIL.baikal.int (192.168.51.25) To mail (192.168.51.25) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org It's safe to enable the asyncronous probe type since the PCIe peripheral devices probing order isn't essential for booting the system. Moreover enabling that feature saves 0.5 seconds of bootup time if no any device attached to the PCIe root port. It's a significant performance gain seeing the total bootup time takes about 3 seconds. Suggested-by: Manivannan Sadhasivam Signed-off-by: Serge Semin Reviewed-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-bt1.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/controller/dwc/pcie-bt1.c b/drivers/pci/controller/dwc/pcie-bt1.c index 95a723a6fd46..e36a20bf82cf 100644 --- a/drivers/pci/controller/dwc/pcie-bt1.c +++ b/drivers/pci/controller/dwc/pcie-bt1.c @@ -638,6 +638,7 @@ static struct platform_driver bt1_pcie_driver = { .driver = { .name = "bt1-pcie", .of_match_table = bt1_pcie_of_match, + .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, }; module_platform_driver(bt1_pcie_driver);