linux-kernel - [PATCH v3 1/1] memory: Fix export symbol twice compiler error for "export symbols for memory related functions" patch

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Date:   Wed, 14 Jun 2023 23:39:02 +0800
From:   Wei Chin Tsai <Wei-chin.Tsai@...iatek.com>
To:     <lkp@...el.com>
CC:     <Wei-chin.Tsai@...iatek.com>,
        <angelogioacchino.delregno@...labora.com>,
        <ivan.tseng@...iatek.com>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <linux@...linux.org.uk>,
        <matthias.bgg@...il.com>, <mel.lee@...iatek.com>,
        <oe-kbuild-all@...ts.linux.dev>, <wsd_upstream@...iatek.com>
Subject: [PATCH v3 1/1] memory: Fix export symbol twice compiler error for "export symbols for memory related functions" patch

User could not add the export symbol "arch_vma_name"
in arch/arm/kernel/process.c and kernel/signal.c both.
It would cause the export symbol twice compiler error
Reported-by: kernel test robot <lkp@...el.com>

Signed-off-by: Wei Chin Tsai <Wei-chin.Tsai@...iatek.com>
---
 arch/arm/kernel/process.c | 3 +++
 kernel/signal.c           | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index df91412a1069..d71a9bafb584 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -343,7 +343,10 @@ const char *arch_vma_name(struct vm_area_struct *vma)
 {
 	return is_gate_vma(vma) ? "[vectors]" : NULL;
 }
+
+#ifdef CONFIG_ARM
 EXPORT_SYMBOL_GPL(arch_vma_name);
+#endif
 
 /* If possible, provide a placement hint at a random offset from the
  * stack for the sigpage and vdso pages.
diff --git a/kernel/signal.c b/kernel/signal.c
index a1abe77fcdc3..f7d03450781e 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -4700,7 +4700,10 @@ __weak const char *arch_vma_name(struct vm_area_struct *vma)
 {
 	return NULL;
 }
+
+#ifdef CONFIG_ARM64
 EXPORT_SYMBOL_GPL(arch_vma_name);
+#endif
 
 static inline void siginfo_buildtime_checks(void)
 {
-- 
2.18.0