linux-kernel - [RFC PATCH 02/12] iommu/vt-d: Remove initialization for dynamically heap-allocated rcu

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Message-Id: <20231017032045.114868-3-tina.zhang@intel.com>
Date:   Tue, 17 Oct 2023 11:20:34 +0800
From:   Tina Zhang <tina.zhang@...el.com>
To:     iommu@...ts.linux.dev, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>, Jason Gunthorpe <jgg@...pe.ca>,
        Kevin Tian <kevin.tian@...el.com>,
        Tina Zhang <tina.zhang@...el.com>
Subject: [RFC PATCH 02/12] iommu/vt-d: Remove initialization for dynamically heap-allocated rcu_head

The rcu_head structures allocated dynamically in the heap don't need any
initialization. Therefore, remove the init_rcu_head().

Signed-off-by: Tina Zhang <tina.zhang@...el.com>
---
 drivers/iommu/intel/svm.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
index 9bf79cf88aec..f9b1f13bd068 100644
--- a/drivers/iommu/intel/svm.c
+++ b/drivers/iommu/intel/svm.c
@@ -334,7 +334,6 @@ static int intel_svm_bind_mm(struct intel_iommu *iommu, struct device *dev,
 	sdev->iommu = iommu;
 	sdev->did = FLPT_DEFAULT_DID;
 	sdev->sid = PCI_DEVID(info->bus, info->devfn);
-	init_rcu_head(&sdev->rcu);
 	if (info->ats_enabled) {
 		sdev->qdep = info->ats_qdep;
 		if (sdev->qdep >= QI_DEV_EIOTLB_MAX_INVS)
-- 
2.39.3