linux-kernel - [PATCH v1 3/4] LoongArch: Remove some extern variables in source files

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Message-ID: <20260120092331.813-4-yangtiezhu@loongson.cn>
Date: Tue, 20 Jan 2026 17:23:30 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1 3/4] LoongArch: Remove some extern variables in source files

There are declarations of the variable "eentry", "pcpu_handlers[]" and
"exception_handlers[]" in asm/setup.h, the source files already include
this header file directly or indirectly, so no need to declare them in
the source files, just remove the code.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 arch/loongarch/kernel/unwind_orc.c      | 2 --
 arch/loongarch/kernel/unwind_prologue.c | 4 ----
 arch/loongarch/mm/tlb.c                 | 1 -
 3 files changed, 7 deletions(-)

diff --git a/arch/loongarch/kernel/unwind_orc.c b/arch/loongarch/kernel/unwind_orc.c
index 40f4d6c12cf6..d3bcbc82f101 100644
--- a/arch/loongarch/kernel/unwind_orc.c
+++ b/arch/loongarch/kernel/unwind_orc.c
@@ -350,8 +350,6 @@ EXPORT_SYMBOL_GPL(unwind_start);
 
 static inline unsigned long bt_address(unsigned long ra)
 {
-	extern unsigned long eentry;
-
 #if defined(CONFIG_NUMA) && !defined(CONFIG_PREEMPT_RT)
 	for (int cpu = 1; cpu < num_possible_cpus(); cpu++) {
 		int vec_sz = sizeof(exception_handlers);
diff --git a/arch/loongarch/kernel/unwind_prologue.c b/arch/loongarch/kernel/unwind_prologue.c
index 729e775bd40d..d04498d8090e 100644
--- a/arch/loongarch/kernel/unwind_prologue.c
+++ b/arch/loongarch/kernel/unwind_prologue.c
@@ -23,10 +23,6 @@ extern const int unwind_hint_lasx;
 extern const int unwind_hint_lbt;
 extern const int unwind_hint_ri;
 extern const int unwind_hint_watch;
-extern unsigned long eentry;
-#ifdef CONFIG_NUMA
-extern unsigned long pcpu_handlers[NR_CPUS];
-#endif
 
 static inline bool scan_handlers(unsigned long entry_offset)
 {
diff --git a/arch/loongarch/mm/tlb.c b/arch/loongarch/mm/tlb.c
index 6a3c91b9cacd..4014c4469587 100644
--- a/arch/loongarch/mm/tlb.c
+++ b/arch/loongarch/mm/tlb.c
@@ -262,7 +262,6 @@ static void output_pgtable_bits_defines(void)
 #ifdef CONFIG_NUMA
 unsigned long pcpu_handlers[NR_CPUS];
 #endif
-extern long exception_handlers[VECSIZE * 128 / sizeof(long)];
 
 static void setup_tlb_handler(int cpu)
 {
-- 
2.42.0