From patchwork Thu May 11 19:08:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Serge Semin X-Patchwork-Id: 1780272 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=baikalelectronics.ru header.i=@baikalelectronics.ru header.a=rsa-sha256 header.s=post header.b=BETr1K8J; dkim-atps=neutral Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4QHLzz5xJDz214S for ; Fri, 12 May 2023 05:09:35 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239057AbjEKTJb (ORCPT ); Thu, 11 May 2023 15:09:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36768 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238477AbjEKTJY (ORCPT ); Thu, 11 May 2023 15:09:24 -0400 Received: from post.baikalelectronics.com (post.baikalelectronics.com [213.79.110.86]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 5B5AD6582; Thu, 11 May 2023 12:09:20 -0700 (PDT) Received: from post.baikalelectronics.com (localhost.localdomain [127.0.0.1]) by post.baikalelectronics.com (Proxmox) with ESMTP id 74B1CE0EBD; Thu, 11 May 2023 22:09:19 +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=BETr1K8JqcS2 e+O4O0BcvMWSvSLM1RdB3vtgQiEHGvFWOQ85kv8eaAD69M8mQVbmnJobiWb29JV5 wKqfoAzL3pZ39y+66gOnvPjSp49J4eNdAmQ+gFk8jsri/EDT6j1E74C8yYXg7FXV GIHkrqaSoo9IkAVp17vh5zDxbZSqd4E= Received: from mail.baikal.int (mail.baikal.int [192.168.51.25]) by post.baikalelectronics.com (Proxmox) with ESMTP id 617E1E0EB1; Thu, 11 May 2023 22:09:19 +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; Thu, 11 May 2023 22:09:19 +0300 From: Serge Semin To: Bjorn Helgaas , Lorenzo Pieralisi , Cai Huoqing , Jingoo Han , Gustavo Pimentel , Vinod Koul , 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 v5 03/14] PCI: bt1: Enable async probe type Date: Thu, 11 May 2023 22:08:51 +0300 Message-ID: <20230511190902.28896-4-Sergey.Semin@baikalelectronics.ru> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230511190902.28896-1-Sergey.Semin@baikalelectronics.ru> References: <20230511190902.28896-1-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) X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_PASS,SPF_PASS, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net 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);