mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
0533f97b43
The contents of 'asm/atomic_arch.h' can be split across some of our other 'asm/' headers. Remove it. Reviewed-by: Andrew Murray <andrew.murray@arm.com> Signed-off-by: Will Deacon <will@kernel.org>
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_LSE_H
|
|
#define __ASM_LSE_H
|
|
|
|
#include <asm/atomic_ll_sc.h>
|
|
|
|
#if defined(CONFIG_AS_LSE) && defined(CONFIG_ARM64_LSE_ATOMICS)
|
|
|
|
#include <linux/compiler_types.h>
|
|
#include <linux/export.h>
|
|
#include <linux/jump_label.h>
|
|
#include <linux/stringify.h>
|
|
#include <asm/alternative.h>
|
|
#include <asm/atomic_lse.h>
|
|
#include <asm/cpucaps.h>
|
|
|
|
__asm__(".arch_extension lse");
|
|
|
|
extern struct static_key_false cpu_hwcap_keys[ARM64_NCAPS];
|
|
extern struct static_key_false arm64_const_caps_ready;
|
|
|
|
static inline bool system_uses_lse_atomics(void)
|
|
{
|
|
return (static_branch_likely(&arm64_const_caps_ready)) &&
|
|
static_branch_likely(&cpu_hwcap_keys[ARM64_HAS_LSE_ATOMICS]);
|
|
}
|
|
|
|
#define __lse_ll_sc_body(op, ...) \
|
|
({ \
|
|
system_uses_lse_atomics() ? \
|
|
__lse_##op(__VA_ARGS__) : \
|
|
__ll_sc_##op(__VA_ARGS__); \
|
|
})
|
|
|
|
/* In-line patching at runtime */
|
|
#define ARM64_LSE_ATOMIC_INSN(llsc, lse) \
|
|
ALTERNATIVE(llsc, lse, ARM64_HAS_LSE_ATOMICS)
|
|
|
|
#else /* CONFIG_AS_LSE && 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
|
|
|
|
#endif /* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */
|
|
#endif /* __ASM_LSE_H */
|