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From: Yinghai Lu <yinghai@kernel.org>
To: Bjorn Helgaas <bhelgaas@google.com>,
	David Miller <davem@davemloft.net>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Wei Yang <weiyang@linux.vnet.ibm.com>, TJ <linux@iam.tj>,
	Yijing Wang <wangyijing@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	Yinghai Lu <yinghai@kernel.org>
Subject: [PATCH v4 08/52] PCI: Remove duplicated code for resource sorting
Date: Thu, 20 Aug 2015 23:20:23 -0700	[thread overview]
Message-ID: <1440138067-4314-9-git-send-email-yinghai@kernel.org> (raw)
In-Reply-To: <1440138067-4314-1-git-send-email-yinghai@kernel.org>

Now sort_resources() and pdev_sort_resources() all have sorting
code.

As we are going to call sort_resources() several places later, so
choose to keep sort_resources(), and remove related code in
pdev_sort_resources().


Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
 drivers/pci/setup-bus.c | 22 +++-------------------
 1 file changed, 3 insertions(+), 19 deletions(-)

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 555a7a3..44d63c0 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -214,9 +214,8 @@ static void pdev_sort_resources(struct pci_dev *dev,
 
 	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
 		struct resource *r;
-		struct pci_dev_resource *dev_res, *tmp;
+		struct pci_dev_resource *tmp;
 		resource_size_t r_align;
-		struct list_head *n;
 
 		r = &dev->resource[i];
 
@@ -239,22 +238,7 @@ static void pdev_sort_resources(struct pci_dev *dev,
 		tmp->res = r;
 		tmp->dev = dev;
 
-		/* fallback is smallest one or list is empty*/
-		n = head;
-		list_for_each_entry(dev_res, head, list) {
-			resource_size_t align;
-
-			align = __pci_resource_alignment(dev_res->dev,
-							 dev_res->res,
-							 realloc_head);
-
-			if (r_align > align) {
-				n = &dev_res->list;
-				break;
-			}
-		}
-		/* Insert it just before n*/
-		list_add_tail(&tmp->list, n);
+		list_add_tail(&tmp->list, head);
 	}
 }
 
@@ -557,9 +541,9 @@ static void __assign_resources_sorted(struct list_head *head,
 	}
 	free_list(&save_head);
 
+requested_and_reassign:
 	sort_resources(head);
 
-requested_and_reassign:
 	/* Satisfy the must-have resource requests */
 	assign_requested_resources_sorted(head, fail_head);
 
-- 
1.8.4.5


  parent reply	other threads:[~2015-08-21  6:21 UTC|newest]

Thread overview: 63+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-21  6:20 [PATCH v4 00/52] PCI: Resource allocation cleanup for v4.3 Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 01/52] PCI: Cleanup res_to_dev_res() printout Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 02/52] PCI: Reuse res_to_dev_res() in reassign_resources_sorted() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 03/52] PCI: Use correct align for optional only resources during sorting Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 04/52] PCI: Optimize bus min_align/size calculation during sizing Yinghai Lu
2015-09-14 20:21   ` Bjorn Helgaas
2015-09-14 21:37     ` Yinghai Lu
2015-09-15 14:57       ` Bjorn Helgaas
2015-09-16 19:33         ` Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 05/52] PCI: Optimize bus align/size calculation for optional " Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 06/52] PCI: Don't add too much optional size for hotplug bridge MMIO Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 07/52] PCI: Reorder resources list for required/optional resources Yinghai Lu
2015-08-21  6:20 ` Yinghai Lu [this message]
2015-08-21  6:20 ` [PATCH v4 09/52] PCI: Rename pdev_sort_resources() to pdev_assign_resources_prepare() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 10/52] PCI: Treat ROM resource as optional during realloc Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 11/52] PCI: Add debug printout during releasing partial assigned resources Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 12/52] PCI: Simplify res reference using in __assign_resources_sorted() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 13/52] PCI, acpiphp: Add missing realloc list checking after resource allocation Yinghai Lu
2015-08-24 22:09   ` Rafael J. Wysocki
2015-08-24 22:14     ` Yinghai Lu
2015-08-25  0:37       ` Rafael J. Wysocki
2015-08-25  0:14         ` Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 14/52] PCI: Add __add_to_list() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 15/52] PCI: Cache window alignment value during bus sizing Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 16/52] PCI: Check if resource is allocated before trying to assign one Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 17/52] PCI: Separate out save_resources()/restore_resources() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 18/52] PCI: Move comment to pci_need_to_release() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 19/52] PCI: Separate required+optional assigning to another function Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 20/52] PCI: Skip required+optional if there is no optional Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 21/52] PCI: Move saved required resource list out of required+optional assigning Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 22/52] PCI: Add alt_size ressource allocation support Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 23/52] PCI: Add support for more than two alt_size under same bridge Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 24/52] PCI: Better support for two alt_size Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 25/52] PCI: Fix size calculation with old_size on rescan path Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 26/52] PCI: Don't add too much optional size for hotplug bridge io Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 27/52] PCI: Move ISA io port align out of calculate_iosize() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 28/52] PCI: Don't add too much io port for hotplug bridge with old size Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 29/52] PCI: Unify calculate_size() for io port and MMIO Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 30/52] PCI: Allow bridge optional only io port resource required size to be 0 Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 31/52] PCI: Unify skip_ioresource_align() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 32/52] PCI: Kill macro checking for bus io port sizing Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 33/52] resources: Split out __allocate_resource() Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 34/52] resources: Make allocate_resource() return best fit resource Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 35/52] PCI: Check pref compatible bit for mem64 resource of PCIe device Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 36/52] PCI: Only treat non-pref mmio64 as pref if all bridges have MEM_64 Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 37/52] PCI: Add has_mem64 for struct host_bridge Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 38/52] PCI: Only treat non-pref mmio64 as pref if host bridge has mmio64 Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 39/52] PCI: Restore pref MMIO allocation logic for host bridge without mmio64 Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 40/52] sparc/PCI: Add mem64 resource parsing for root bus Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 41/52] sparc/PCI: Add IORESOURCE_MEM_64 for 64-bit resource in OF parsing Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 42/52] powerpc/PCI: " Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 43/52] OF/PCI: Add IORESOURCE_MEM_64 for 64-bit resource Yinghai Lu
2015-08-21 18:18   ` Rob Herring
2015-08-21 18:24     ` Yinghai Lu
2015-08-21  6:20 ` [PATCH v4 44/52] PCI: Treat optional as required in first try for bridge rescan Yinghai Lu
2015-08-21  6:21 ` [PATCH v4 45/52] PCI: Get new realloc size for bridge for last try Yinghai Lu
2015-08-21  6:21 ` [PATCH v4 46/52] PCI: Don't release sibling bridge resources during hotplug Yinghai Lu
2015-08-21  6:21 ` [PATCH v4 47/52] PCI: Don't release fixed resource for realloc Yinghai Lu
2015-08-21  6:21 ` [PATCH v4 48/52] PCI: Claim fixed resource during remove/rescan path Yinghai Lu
2015-08-21  6:21 ` [PATCH v4 49/52] PCI: Set resource to FIXED for LSI devices Yinghai Lu
2015-08-21  6:21 ` [PATCH v4 50/52] PCI, x86: Add pci=assign_pref_bars to reallocate pref BARs Yinghai Lu
2015-08-21  6:21 ` [PATCH v4 51/52] PCI: Introduce resource_disabled() Yinghai Lu
2015-08-21  6:21 ` [PATCH v4 52/52] PCI: Don't set flags to 0 when assign resource fail Yinghai Lu

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