Commit ac7c3e4ff401 ("compiler: enable CONFIG_OPTIMIZE_INLINING
forcibly") allows compiler to uninline functions marked as 'inline'.
In case of __xchg()/__cmpxchg() this would cause to reference
BUILD_BUG(), which is an error case for catching bugs and will not
happen for correct code, if __xchg()/__cmpxchg() is inlined.
This bug can be produced with CONFIG_DEBUG_SECTION_MISMATCH enabled,
and the solution is similar to below commits:
46f1619500d0225 ("MIPS: include: Mark __xchg as __always_inline"),
88356d09904bc60 ("MIPS: include: Mark __cmpxchg as __always_inline").
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
arch/loongarch/include/asm/cmpxchg.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/loongarch/include/asm/cmpxchg.h b/arch/loongarch/include/asm/cmpxchg.h
index ae19e33c7754..ecfa6cf79806 100644
--- a/arch/loongarch/include/asm/cmpxchg.h
+++ b/arch/loongarch/include/asm/cmpxchg.h
@@ -61,8 +61,8 @@ static inline unsigned int __xchg_small(volatile void *ptr, unsigned int val,
return (old32 & mask) >> shift;
}
-static inline unsigned long __xchg(volatile void *ptr, unsigned long x,
- int size)
+static __always_inline unsigned long
+__xchg(volatile void *ptr, unsigned long x, int size)
{
switch (size) {
case 1:
@@ -159,8 +159,8 @@ static inline unsigned int __cmpxchg_small(volatile void *ptr, unsigned int old,
return (old32 & mask) >> shift;
}
-static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
- unsigned long new, unsigned int size)
+static __always_inline unsigned long
+__cmpxchg(volatile void *ptr, unsigned long old, unsigned long new, unsigned int size)
{
switch (size) {
case 1:
--
2.31.1
