From: Heiko Carstens <hca@linux.ibm.com>
Date: Wed, 6 Nov 2024 10:03:16 +0000 (+0100)
Subject: s390/atomic: Remove __atomic_cmpxchg() variants
X-Git-Tag: v6.13-rc1~206^2~28
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b59f103d3726c35c8715512a5e3451ad778c127c;p=thirdparty%2Fkernel%2Flinux.git

s390/atomic: Remove __atomic_cmpxchg() variants

With users converted to the standard arch_cmpxchg() variants, remove
the now unused __atomic_cmpxchg() and __atomic_cmpxchg_bool() variants.

Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---

diff --git a/arch/s390/include/asm/atomic_ops.h b/arch/s390/include/asm/atomic_ops.h
index 65380da9e75f3..1d6b2056fad85 100644
--- a/arch/s390/include/asm/atomic_ops.h
+++ b/arch/s390/include/asm/atomic_ops.h
@@ -169,79 +169,4 @@ __ATOMIC64_OPS(__atomic64_xor, "xgr")
 
 #endif /* MARCH_HAS_Z196_FEATURES */
 
-static __always_inline int __atomic_cmpxchg(int *ptr, int old, int new)
-{
-	asm volatile(
-		"	cs	%[old],%[new],%[ptr]"
-		: [old] "+d" (old), [ptr] "+Q" (*ptr)
-		: [new] "d" (new)
-		: "cc", "memory");
-	return old;
-}
-
-static __always_inline long __atomic64_cmpxchg(long *ptr, long old, long new)
-{
-	asm volatile(
-		"	csg	%[old],%[new],%[ptr]"
-		: [old] "+d" (old), [ptr] "+QS" (*ptr)
-		: [new] "d" (new)
-		: "cc", "memory");
-	return old;
-}
-
-/* GCC versions before 14.2.0 may die with an ICE in some configurations. */
-#if defined(__GCC_ASM_FLAG_OUTPUTS__) && !(IS_ENABLED(CONFIG_CC_IS_GCC) && (GCC_VERSION < 140200))
-
-static __always_inline bool __atomic_cmpxchg_bool(int *ptr, int old, int new)
-{
-	int cc;
-
-	asm volatile(
-		"	cs	%[old],%[new],%[ptr]"
-		: [old] "+d" (old), [ptr] "+Q" (*ptr), "=@cc" (cc)
-		: [new] "d" (new)
-		: "memory");
-	return cc == 0;
-}
-
-static __always_inline bool __atomic64_cmpxchg_bool(long *ptr, long old, long new)
-{
-	int cc;
-
-	asm volatile(
-		"	csg	%[old],%[new],%[ptr]"
-		: [old] "+d" (old), [ptr] "+QS" (*ptr), "=@cc" (cc)
-		: [new] "d" (new)
-		: "memory");
-	return cc == 0;
-}
-
-#else /* __GCC_ASM_FLAG_OUTPUTS__ */
-
-static __always_inline bool __atomic_cmpxchg_bool(int *ptr, int old, int new)
-{
-	int old_expected = old;
-
-	asm volatile(
-		"	cs	%[old],%[new],%[ptr]"
-		: [old] "+d" (old), [ptr] "+Q" (*ptr)
-		: [new] "d" (new)
-		: "cc", "memory");
-	return old == old_expected;
-}
-
-static __always_inline bool __atomic64_cmpxchg_bool(long *ptr, long old, long new)
-{
-	long old_expected = old;
-
-	asm volatile(
-		"	csg	%[old],%[new],%[ptr]"
-		: [old] "+d" (old), [ptr] "+QS" (*ptr)
-		: [new] "d" (new)
-		: "cc", "memory");
-	return old == old_expected;
-}
-
-#endif /* __GCC_ASM_FLAG_OUTPUTS__ */
-
 #endif /* __ARCH_S390_ATOMIC_OPS__  */