Commit eb3aabbf authored by Andrew Murray's avatar Andrew Murray Committed by Will Deacon
Browse files

arm64: atomics: Remove atomic_ll_sc compilation unit 



We no longer fall back to out-of-line atomics on systems with
CONFIG_ARM64_LSE_ATOMICS where ARM64_HAS_LSE_ATOMICS is not set.

Remove the unused compilation unit which provided these symbols.

Signed-off-by: default avatarAndrew Murray <andrew.murray@arm.com>
Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 3337cb5a

arch/arm64/lib/Makefile

+0 −19
Original line number Diff line number Diff line
@@ -11,25 +11,6 @@ CFLAGS_REMOVE_xor-neon.o += -mgeneral-regs-only 
CFLAGS_xor-neon.o		+= -ffreestanding

endif



# Tell the compiler to treat all general purpose registers (with the

# exception of the IP registers, which are already handled by the caller

# in case of a PLT) as callee-saved, which allows for efficient runtime

# patching of the bl instruction in the caller with an atomic instruction

# when supported by the CPU. Result and argument registers are handled

# correctly, based on the function prototype.

lib-$(CONFIG_ARM64_LSE_ATOMICS) += atomic_ll_sc.o

CFLAGS_atomic_ll_sc.o	:= -ffixed-x1 -ffixed-x2        		\

		   -ffixed-x3 -ffixed-x4 -ffixed-x5 -ffixed-x6		\

		   -ffixed-x7 -fcall-saved-x8 -fcall-saved-x9		\

		   -fcall-saved-x10 -fcall-saved-x11 -fcall-saved-x12	\

		   -fcall-saved-x13 -fcall-saved-x14 -fcall-saved-x15	\

		   -fcall-saved-x18 -fomit-frame-pointer

CFLAGS_REMOVE_atomic_ll_sc.o := $(CC_FLAGS_FTRACE)

GCOV_PROFILE_atomic_ll_sc.o	:= n

KASAN_SANITIZE_atomic_ll_sc.o	:= n

KCOV_INSTRUMENT_atomic_ll_sc.o	:= n

UBSAN_SANITIZE_atomic_ll_sc.o	:= n



lib-$(CONFIG_ARCH_HAS_UACCESS_FLUSHCACHE) += uaccess_flushcache.o



obj-$(CONFIG_CRC32) += crc32.o

arch/arm64/lib/atomic_ll_sc.c

deleted100644 → 0
+0 −3
Original line number Diff line number Diff line 
#include <asm/atomic.h>

#define __ARM64_IN_ATOMIC_IMPL

#include <asm/atomic_ll_sc.h>

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