From patchwork Sun Jun 11 19:19:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 13275345 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 0224FC8300C for ; Sun, 11 Jun 2023 19:20:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229562AbjFKTUQ (ORCPT ); Sun, 11 Jun 2023 15:20:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36946 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232933AbjFKTUN (ORCPT ); Sun, 11 Jun 2023 15:20:13 -0400 Received: from post.baikalelectronics.com (post.baikalelectronics.com [213.79.110.86]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id A3259E52; Sun, 11 Jun 2023 12:20:10 -0700 (PDT) Received: from post.baikalelectronics.com (localhost.localdomain [127.0.0.1]) by post.baikalelectronics.com (Proxmox) with ESMTP id C01C7E0E6E; Sun, 11 Jun 2023 22:20:09 +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=VhgfamBFn/9w NP1sXfFpnaT7mbDoO1VjOaPlQ22LxlPqIxhK690FG19umZQHHRexGk2Cxjrye50H sSKvR+UwaM3edIaSizAKk8MMFtx6do853DfQNqFGYITRq5l6hByH8IApKe3GnueU Gc/QaiTfdrrTx2oom6+jCAD08lJjAls= Received: from mail.baikal.int (mail.baikal.int [192.168.51.25]) by post.baikalelectronics.com (Proxmox) with ESMTP id 9B398E0DE3; Sun, 11 Jun 2023 22:20:09 +0300 (MSK) Received: from localhost (10.8.30.10) by mail (192.168.51.25) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Sun, 11 Jun 2023 22:20:09 +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 v7 03/11] PCI: bt1: Enable async probe type Date: Sun, 11 Jun 2023 22:19:57 +0300 Message-ID: <20230611192005.25636-4-Sergey.Semin@baikalelectronics.ru> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230611192005.25636-1-Sergey.Semin@baikalelectronics.ru> References: <20230611192005.25636-1-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 X-Originating-IP: [10.8.30.10] 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);