arm64: acpi: Move get_cpu_for_acpi_id() to a header
[ Upstream commit 8d34b6f17b9ac93faa2791eb037dcb08bdf755de ] ACPI identifies CPUs by UID. get_cpu_for_acpi_id() maps the ACPI UID to the Linux CPU number. The helper to retrieve this mapping is only available in arm64's NUMA code. Move it to live next to get_acpi_id_for_cpu(). Signed-off-by: James Morse <james.morse@arm.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Gavin Shan <gshan@redhat.com> Tested-by: Miguel Luis <miguel.luis@oracle.com> Tested-by: Vishnu Pajjuri <vishnu@os.amperecomputing.com> Tested-by: Jianyong Wu <jianyong.wu@arm.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Acked-by: Hanjun Guo <guohanjun@huawei.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Link: https://lore.kernel.org/r/20240529133446.28446-12-Jonathan.Cameron@huawei.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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2 changed files with 11 additions and 11 deletions
arch/arm64
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@ -97,6 +97,17 @@ static inline u32 get_acpi_id_for_cpu(unsigned int cpu)
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return acpi_cpu_get_madt_gicc(cpu)->uid;
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}
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static inline int get_cpu_for_acpi_id(u32 uid)
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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 (uid == get_acpi_id_for_cpu(cpu))
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return cpu;
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return -EINVAL;
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}
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static inline void arch_fix_phys_package_id(int num, u32 slot) { }
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void __init acpi_init_cpus(void);
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int apei_claim_sea(struct pt_regs *regs);
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@ -34,17 +34,6 @@ int __init acpi_numa_get_nid(unsigned int cpu)
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return acpi_early_node_map[cpu];
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}
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static inline int get_cpu_for_acpi_id(u32 uid)
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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 (uid == get_acpi_id_for_cpu(cpu))
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return cpu;
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return -EINVAL;
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}
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static int __init acpi_parse_gicc_pxm(union acpi_subtable_headers *header,
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const unsigned long end)
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{
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