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>
45 lines
824 B
C
45 lines
824 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Definitions specific to SMP platforms.
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*
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* Copyright (C) 2013 ARM Ltd.
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*/
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#ifndef __ASM_SMP_PLAT_H
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#define __ASM_SMP_PLAT_H
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#include <linux/cpumask.h>
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#include <asm/smp.h>
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#include <asm/types.h>
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struct mpidr_hash {
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u64 mask;
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u32 shift_aff[4];
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u32 bits;
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};
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extern struct mpidr_hash mpidr_hash;
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static inline u32 mpidr_hash_size(void)
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{
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return 1 << mpidr_hash.bits;
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}
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/*
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* Retrieve logical cpu index corresponding to a given MPIDR.Aff*
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* - mpidr: MPIDR.Aff* bits to be used for the look-up
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*
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* Returns the cpu logical index or -EINVAL on look-up error
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*/
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static inline int get_logical_index(u64 mpidr)
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{
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int cpu;
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for (cpu = 0; cpu < nr_cpu_ids; cpu++)
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if (cpu_logical_map(cpu) == mpidr)
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return cpu;
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return -EINVAL;
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}
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#endif /* __ASM_SMP_PLAT_H */
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