linux-kernel - [PATCH 2/4] numa, iommu/io-pgtable-arm: Use NUMA aware memory allocation for smmu translation tables

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Message-Id: <20170921085922.11659-3-ganapatrao.kulkarni@cavium.com>
Date:   Thu, 21 Sep 2017 14:29:20 +0530
From:   Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, linux-mm@...ck.org
Cc:     Will.Deacon@....com, robin.murphy@....com,
        lorenzo.pieralisi@....com, hanjun.guo@...aro.org, joro@...tes.org,
        vbabka@...e.cz, akpm@...ux-foundation.org, mhocko@...e.com,
        Tomasz.Nowicki@...ium.com, Robert.Richter@...ium.com,
        jnair@...iumnetworks.com, gklkml16@...il.com
Subject: [PATCH 2/4] numa, iommu/io-pgtable-arm: Use NUMA aware memory allocation for smmu translation tables

function __arm_lpae_alloc_pages is used to allcoated memory for smmu
translation tables. updating function to allocate memory/pages
from the proximity domain of SMMU device.

Signed-off-by: Ganapatrao Kulkarni <ganapatrao.kulkarni@...ium.com>
---
 drivers/iommu/io-pgtable-arm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index e8018a3..f6d01f6 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -215,8 +215,10 @@ static void *__arm_lpae_alloc_pages(size_t size, gfp_t gfp,
 {
 	struct device *dev = cfg->iommu_dev;
 	dma_addr_t dma;
-	void *pages = alloc_pages_exact(size, gfp | __GFP_ZERO);
+	void *pages;
 
+	pages = alloc_pages_exact_nid(dev_to_node(dev), size,
+			gfp | __GFP_ZERO);
 	if (!pages)
 		return NULL;
 
-- 
2.9.4