Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932656AbcDHA2j (ORCPT ); Thu, 7 Apr 2016 20:28:39 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:43384 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932505AbcDHAWL (ORCPT ); Thu, 7 Apr 2016 20:22:11 -0400 From: Yinghai Lu To: Bjorn Helgaas , David Miller , Benjamin Herrenschmidt , Linus Torvalds Cc: Wei Yang , TJ , Yijing Wang , Khalid Aziz , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Yinghai Lu Subject: [PATCH v11 34/60] PCI: Add debug printout during releasing partial assigned resources Date: Thu, 7 Apr 2016 17:15:47 -0700 Message-Id: <1460074573-7481-35-git-send-email-yinghai@kernel.org> X-Mailer: git-send-email 1.8.4.5 In-Reply-To: <1460074573-7481-1-git-send-email-yinghai@kernel.org> References: <1460074573-7481-1-git-send-email-yinghai@kernel.org> X-Source-IP: aserv0021.oracle.com [141.146.126.233] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1507 Lines: 44 We try to assign required+optional at first, and we only accept the result if all resources get allocated. Otherwise will release assigned in the list, and try to assign required and expand to optional. We have to do that to make sure any required has priority over any optional. When that happens, we only print out "assigned" info, that is confusing as it looks like same range is assigned to two peer resources at the same time. Add printout for releasing so we have whole picture in debug messages. Signed-off-by: Yinghai Lu --- drivers/pci/setup-bus.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c index f9e6a00..b22eb5f 100644 --- a/drivers/pci/setup-bus.c +++ b/drivers/pci/setup-bus.c @@ -525,9 +525,17 @@ static void __assign_resources_sorted(struct list_head *head, free_list(&local_fail_head); /* Release assigned resource */ - list_for_each_entry(dev_res, head, list) - if (dev_res->res->parent) - release_resource(dev_res->res); + list_for_each_entry(dev_res, head, list) { + struct resource *res = dev_res->res; + + if (res->parent) { + dev_printk(KERN_DEBUG, &dev_res->dev->dev, + "BAR %d: released %pR\n", + (int)(res - &dev_res->dev->resource[0]), + res); + release_resource(res); + } + } /* Restore start/end/flags from saved list */ list_for_each_entry(save_res, &save_head, list) { struct resource *res = save_res->res; -- 1.8.4.5