From: Andi Kleen <ak@suse.de>
Date: Mon, 12 Sep 2005 16:49:24 +0000 (+0200)
Subject: [PATCH] x86-64: Micro optimization to dma_alloc_coherent node lookup
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=117090b5e815d0075bff85c2be954d68a11ac4ed;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] x86-64: Micro optimization to dma_alloc_coherent node lookup

Use pcibus_to_node directly

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c
index 57f35c68aa34..cf0a0315d586 100644
--- a/arch/x86_64/kernel/pci-gart.c
+++ b/arch/x86_64/kernel/pci-gart.c
@@ -191,11 +191,9 @@ static void *dma_alloc_pages(struct device *dev, unsigned gfp, unsigned order)
 {
 	struct page *page;
 	int node;
-	if (dev->bus == &pci_bus_type) {
-		cpumask_t mask;
-		mask = pcibus_to_cpumask(to_pci_dev(dev)->bus);
-		node = cpu_to_node(first_cpu(mask));
-	} else
+	if (dev->bus == &pci_bus_type)
+		node = pcibus_to_node(to_pci_dev(dev)->bus);
+	else
 		node = numa_node_id();
 	page = alloc_pages_node(node, gfp, order);
 	return page ? page_address(page) : NULL;