linux-kernel - [PATCH 1/2] iommu/hyper-v: Constify hyperv_ir_domain

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Date:   Mon, 25 May 2020 23:49:57 +0200
From:   Rikard Falkeborn <rikard.falkeborn@...il.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Rikard Falkeborn <rikard.falkeborn@...il.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, linux-hyperv@...r.kernel.org
Subject: [PATCH 1/2] iommu/hyper-v: Constify hyperv_ir_domain_ops

The struct hyperv_ir_domain_ops is not modified and can be made const to
allow the compiler to put it in read-only memory.

Before:
   text    data     bss     dec     hex filename
   2916    1180    1120    5216    1460 drivers/iommu/hyperv-iommu.o

After:
   text    data     bss     dec     hex filename
   3044    1052    1120    5216    1460 drivers/iommu/hyperv-iommu.o

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
---
 drivers/iommu/hyperv-iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/hyperv-iommu.c b/drivers/iommu/hyperv-iommu.c
index a386b83e0e34..3c0c67a99c7b 100644
--- a/drivers/iommu/hyperv-iommu.c
+++ b/drivers/iommu/hyperv-iommu.c
@@ -131,7 +131,7 @@ static int hyperv_irq_remapping_activate(struct irq_domain *domain,
 	return 0;
 }
 
-static struct irq_domain_ops hyperv_ir_domain_ops = {
+static const struct irq_domain_ops hyperv_ir_domain_ops = {
 	.alloc = hyperv_irq_remapping_alloc,
 	.free = hyperv_irq_remapping_free,
 	.activate = hyperv_irq_remapping_activate,
-- 
2.26.2