Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
38 lines
933 B
C
38 lines
933 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_LSE_H
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#define __ASM_LSE_H
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#include <asm/atomic_ll_sc.h>
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#ifdef CONFIG_ARM64_LSE_ATOMICS
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#define __LSE_PREAMBLE ".arch_extension lse\n"
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#include <linux/compiler_types.h>
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#include <linux/export.h>
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#include <linux/stringify.h>
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#include <asm/alternative.h>
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#include <asm/alternative-macros.h>
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#include <asm/atomic_lse.h>
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#include <asm/cpucaps.h>
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#define __lse_ll_sc_body(op, ...) \
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({ \
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alternative_has_cap_likely(ARM64_HAS_LSE_ATOMICS) ? \
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__lse_##op(__VA_ARGS__) : \
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__ll_sc_##op(__VA_ARGS__); \
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})
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/* In-line patching at runtime */
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#define ARM64_LSE_ATOMIC_INSN(llsc, lse) \
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ALTERNATIVE(llsc, __LSE_PREAMBLE lse, ARM64_HAS_LSE_ATOMICS)
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#else /* CONFIG_ARM64_LSE_ATOMICS */
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#define __lse_ll_sc_body(op, ...) __ll_sc_##op(__VA_ARGS__)
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#define ARM64_LSE_ATOMIC_INSN(llsc, lse) llsc
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#endif /* CONFIG_ARM64_LSE_ATOMICS */
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#endif /* __ASM_LSE_H */
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