From patchwork Fri Dec 18 17:40:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sergei Miroshnichenko X-Patchwork-Id: 1418521 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=yadro.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=yadro.com header.i=@yadro.com header.a=rsa-sha256 header.s=mta-01 header.b=bCyhKa2F; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CyGRL0Hl4z9sVM for ; Sat, 19 Dec 2020 04:42:54 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728459AbgLRRmw (ORCPT ); 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Fri, 18 Dec 2020 20:41:33 +0300 (MSK) Received: from T-EXCH-03.corp.yadro.com (t-exch-03.corp.yadro.com [172.17.100.103]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mta-01.yadro.com (Postfix) with ESMTPS id 70D3A413E2; Fri, 18 Dec 2020 20:41:11 +0300 (MSK) Received: from NB-148.yadro.com (172.17.15.136) by T-EXCH-03.corp.yadro.com (172.17.100.103) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.669.32; Fri, 18 Dec 2020 20:41:11 +0300 From: Sergei Miroshnichenko To: CC: Bjorn Helgaas , Lukas Wunner , Stefan Roese , Andy Lavr , =?utf-8?q?Chris?= =?utf-8?q?tian_K=C3=B6nig?= , David Laight , Rajat Jain , , Sergei Miroshnichenko Subject: [PATCH v9 26/26] resource: increase max nesting level for /proc/iomem Date: Fri, 18 Dec 2020 20:40:11 +0300 Message-ID: <20201218174011.340514-27-s.miroshnichenko@yadro.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20201218174011.340514-1-s.miroshnichenko@yadro.com> References: <20201218174011.340514-1-s.miroshnichenko@yadro.com> MIME-Version: 1.0 X-Originating-IP: [172.17.15.136] X-ClientProxiedBy: T-EXCH-01.corp.yadro.com (172.17.10.101) To T-EXCH-03.corp.yadro.com (172.17.100.103) Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Current value of maximum indentation for /proc/iomem and /proc/ioports is not enough for comfortable PCI resources debugging when several bridges are nested, so increase it from 5 to 15: % lspci -tv +-[0000:80]-+-00.0-[81]-- | +-01.0-[82]-- | +-03.0-[83-99]----00.0-[84-99]----04.0-[85-99]----00.0-[86-99]--+-00.0-[87]-- | | +-04.0-[88]-- | | +-08.0-[89]-- | | +-09.0-[8a]-- | | +-0c.0-[8b-95]----00.0-[8c-95]--+-00.0-[8d]-- | | | +-04.0-[8e]-- | | | +-08.0-[8f]-- | | | +-09.0-[90]-- | | | +-0c.0-[91]-- | | | +-10.0-[92]--+-00.0 | | | | \-00.1 % sudo cat /proc/iomem ... f9000000000-f907fffffff : PCI Bus 0000:80 f9000100000-f90010fffff : PCI Bus 0000:83 f9000100000-f90010fffff : PCI Bus 0000:84 f9000100000-f90010fffff : PCI Bus 0000:85 f9000100000-f90010fffff : PCI Bus 0000:86 f9000100000-f90009fffff : PCI Bus 0000:8b f9000100000-f90009fffff : PCI Bus 0000:8c f9000100000-f90003fffff : PCI Bus 0000:92 f9000100000-f90001fffff : 0000:92:00.0 f9000100000-f90001fffff : qla2xx f9000200000-f9002ffffff : 0000:92:00.1 f9000200000-f90002fffff : qla2xxx f9000300000-f9000301fff : 0000:92:00.0 f9000300000-f9000301fff : qla2xxx f9000302000-f9000303fff : 0000:92:00.1 f9000302000-f9000303fff : qla2xxx f9000304000-f9000304fff : 0000:92:00.0 f9000304000-f9000304fff : qla2xxx f9000305000-f9000305fff : 0000:92:00.1 f9000305000-f9000305fff : qla2xxx Signed-off-by: Sergei Miroshnichenko --- kernel/resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/resource.c b/kernel/resource.c index 833394f9c608..4b3b378fed19 100644 --- a/kernel/resource.c +++ b/kernel/resource.c @@ -83,7 +83,7 @@ static void *r_next(struct seq_file *m, void *v, loff_t *pos) #ifdef CONFIG_PROC_FS -enum { MAX_IORES_LEVEL = 5 }; +enum { MAX_IORES_LEVEL = 15 }; static void *r_start(struct seq_file *m, loff_t *pos) __acquires(resource_lock)