From febe950dbfb464799beb0339cc6fb10699f4a5da Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Wed, 31 May 2023 15:08:44 +0200 Subject: arch: Remove cmpxchg_double No moar users, remove the monster. Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Arnd Bergmann Reviewed-by: Mark Rutland Acked-by: Heiko Carstens Tested-by: Mark Rutland Link: https://lore.kernel.org/r/20230531132323.991907085@infradead.org --- arch/arm64/include/asm/atomic_lse.h | 36 ------------------------------------ 1 file changed, 36 deletions(-) (limited to 'arch/arm64/include/asm/atomic_lse.h') diff --git a/arch/arm64/include/asm/atomic_lse.h b/arch/arm64/include/asm/atomic_lse.h index c781281306d0..87f568a94e55 100644 --- a/arch/arm64/include/asm/atomic_lse.h +++ b/arch/arm64/include/asm/atomic_lse.h @@ -281,42 +281,6 @@ __CMPXCHG_CASE(x, , mb_, 64, al, "memory") #undef __CMPXCHG_CASE -#define __CMPXCHG_DBL(name, mb, cl...) \ -static __always_inline long \ -__lse__cmpxchg_double##name(unsigned long old1, \ - unsigned long old2, \ - unsigned long new1, \ - unsigned long new2, \ - volatile void *ptr) \ -{ \ - unsigned long oldval1 = old1; \ - unsigned long oldval2 = old2; \ - register unsigned long x0 asm ("x0") = old1; \ - register unsigned long x1 asm ("x1") = old2; \ - register unsigned long x2 asm ("x2") = new1; \ - register unsigned long x3 asm ("x3") = new2; \ - register unsigned long x4 asm ("x4") = (unsigned long)ptr; \ - \ - asm volatile( \ - __LSE_PREAMBLE \ - " casp" #mb "\t%[old1], %[old2], %[new1], %[new2], %[v]\n"\ - " eor %[old1], %[old1], %[oldval1]\n" \ - " eor %[old2], %[old2], %[oldval2]\n" \ - " orr %[old1], %[old1], %[old2]" \ - : [old1] "+&r" (x0), [old2] "+&r" (x1), \ - [v] "+Q" (*(__uint128_t *)ptr) \ - : [new1] "r" (x2), [new2] "r" (x3), [ptr] "r" (x4), \ - [oldval1] "r" (oldval1), [oldval2] "r" (oldval2) \ - : cl); \ - \ - return x0; \ -} - -__CMPXCHG_DBL( , ) -__CMPXCHG_DBL(_mb, al, "memory") - -#undef __CMPXCHG_DBL - #define __CMPXCHG128(name, mb, cl...) \ static __always_inline u128 \ __lse__cmpxchg128##name(volatile u128 *ptr, u128 old, u128 new) \ -- cgit