linux-kernel - [PATCH 1/3] iommu/io-pgtable-arm: Prepare for modularization

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Date:   Fri, 18 Dec 2020 00:38:40 -0800
From:   "Isaac J. Manjarres" <isaacm@...eaurora.org>
To:     iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     "Isaac J. Manjarres" <isaacm@...eaurora.org>, will@...nel.org,
        joro@...tes.org, robin.murphy@....com, pdaly@...eaurora.org,
        pratikp@...eaurora.org, kernel-team@...roid.com
Subject: [PATCH 1/3] iommu/io-pgtable-arm: Prepare for modularization

The io-pgtable-arm and io-pgtable-arm-v7s source files will
be compiled as separate modules, along with the io-pgtable
source. Export the symbols for the io-pgtable init function
structures for the io-pgtable module to use.

Signed-off-by: Isaac J. Manjarres <isaacm@...eaurora.org>
---
 drivers/iommu/io-pgtable-arm-v7s.c | 4 ++++
 drivers/iommu/io-pgtable-arm.c     | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c
index 1d92ac9..f062c1c 100644
--- a/drivers/iommu/io-pgtable-arm-v7s.c
+++ b/drivers/iommu/io-pgtable-arm-v7s.c
@@ -28,6 +28,7 @@
 #include <linux/iommu.h>
 #include <linux/kernel.h>
 #include <linux/kmemleak.h>
+#include <linux/module.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
@@ -839,6 +840,7 @@ struct io_pgtable_init_fns io_pgtable_arm_v7s_init_fns = {
 	.alloc	= arm_v7s_alloc_pgtable,
 	.free	= arm_v7s_free_pgtable,
 };
+EXPORT_SYMBOL_GPL(io_pgtable_arm_v7s_init_fns);
 
 #ifdef CONFIG_IOMMU_IO_PGTABLE_ARMV7S_SELFTEST
 
@@ -984,3 +986,5 @@ static int __init arm_v7s_do_selftests(void)
 }
 subsys_initcall(arm_v7s_do_selftests);
 #endif
+
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index 87def58..2623d57 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -13,6 +13,7 @@
 #include <linux/bitops.h>
 #include <linux/io-pgtable.h>
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/sizes.h>
 #include <linux/slab.h>
 #include <linux/types.h>
@@ -1047,26 +1048,31 @@ struct io_pgtable_init_fns io_pgtable_arm_64_lpae_s1_init_fns = {
 	.alloc	= arm_64_lpae_alloc_pgtable_s1,
 	.free	= arm_lpae_free_pgtable,
 };
+EXPORT_SYMBOL_GPL(io_pgtable_arm_64_lpae_s1_init_fns);
 
 struct io_pgtable_init_fns io_pgtable_arm_64_lpae_s2_init_fns = {
 	.alloc	= arm_64_lpae_alloc_pgtable_s2,
 	.free	= arm_lpae_free_pgtable,
 };
+EXPORT_SYMBOL_GPL(io_pgtable_arm_64_lpae_s2_init_fns);
 
 struct io_pgtable_init_fns io_pgtable_arm_32_lpae_s1_init_fns = {
 	.alloc	= arm_32_lpae_alloc_pgtable_s1,
 	.free	= arm_lpae_free_pgtable,
 };
+EXPORT_SYMBOL_GPL(io_pgtable_arm_32_lpae_s1_init_fns);
 
 struct io_pgtable_init_fns io_pgtable_arm_32_lpae_s2_init_fns = {
 	.alloc	= arm_32_lpae_alloc_pgtable_s2,
 	.free	= arm_lpae_free_pgtable,
 };
+EXPORT_SYMBOL_GPL(io_pgtable_arm_32_lpae_s2_init_fns);
 
 struct io_pgtable_init_fns io_pgtable_arm_mali_lpae_init_fns = {
 	.alloc	= arm_mali_lpae_alloc_pgtable,
 	.free	= arm_lpae_free_pgtable,
 };
+EXPORT_SYMBOL_GPL(io_pgtable_arm_mali_lpae_init_fns);
 
 #ifdef CONFIG_IOMMU_IO_PGTABLE_LPAE_SELFTEST
 
@@ -1252,3 +1258,5 @@ static int __init arm_lpae_do_selftests(void)
 }
 subsys_initcall(arm_lpae_do_selftests);
 #endif
+
+MODULE_LICENSE("GPL v2");
-- 
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