Commit 0899a627 authored by Gavin Shan's avatar Gavin Shan Committed by Catalin Marinas
Browse files

arm64: Remove system_uses_lse_atomics() 



There are two variants of system_uses_lse_atomics(), depending on
CONFIG_ARM64_LSE_ATOMICS. The function isn't called anywhere when
CONFIG_ARM64_LSE_ATOMICS is disabled. It can be directly replaced
by alternative_has_cap_likely(ARM64_HAS_LSE_ATOMICS) when the kernel
option is enabled.

No need to keep system_uses_lse_atomics() and just remove it.

Signed-off-by: default avatarGavin Shan <gshan@redhat.com>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20231017005036.334067-1-gshan@redhat.com


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent dba2ff49

arch/arm64/include/asm/lse.h

+1 −8
Original line number Diff line number Diff line
@@ -16,14 +16,9 @@ 
#include <asm/atomic_lse.h>

#include <asm/cpucaps.h>



static __always_inline bool system_uses_lse_atomics(void)

{

	return alternative_has_cap_likely(ARM64_HAS_LSE_ATOMICS);

}



#define __lse_ll_sc_body(op, ...)					\

({									\

	system_uses_lse_atomics() ?					\

	alternative_has_cap_likely(ARM64_HAS_LSE_ATOMICS) ?		\

		__lse_##op(__VA_ARGS__) :				\

		__ll_sc_##op(__VA_ARGS__);				\

})
@@ -34,8 +29,6 @@ static __always_inline bool system_uses_lse_atomics(void) 


#else	/* CONFIG_ARM64_LSE_ATOMICS */



static inline bool system_uses_lse_atomics(void) { return false; }



#define __lse_ll_sc_body(op, ...)		__ll_sc_##op(__VA_ARGS__)



#define ARM64_LSE_ATOMIC_INSN(llsc, lse)	llsc