diff options
| author | Chengwen Feng <fengchengwen@huawei.com> | 2026-04-01 16:16:33 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2026-04-06 16:55:15 +0200 |
| commit | 7cd5f5659ac8e49811ef03cbfe8b4a2069abaa27 (patch) | |
| tree | 206372f445c1529a88657815a4942214657e3a75 /arch/arm64/include | |
| parent | 591cd656a1bf5ea94a222af5ef2ee76df029c1d2 (diff) | |
arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
As a step towards unifying the interface for retrieving ACPI CPU UID
across architectures, introduce a new function acpi_get_cpu_uid() for
arm64. While at it, add input validation to make the code more robust.
Reimplement get_cpu_for_acpi_id() based on acpi_get_cpu_uid() for
consistency, and move its implementation next to the new function for
code coherence.
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Link: https://patch.msgid.link/20260401081640.26875-2-fengchengwen@huawei.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/acpi.h | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index c07a58b96329..2219a3301e72 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -118,18 +118,8 @@ static inline u32 get_acpi_id_for_cpu(unsigned int cpu) { return acpi_cpu_get_madt_gicc(cpu)->uid; } - -static inline int get_cpu_for_acpi_id(u32 uid) -{ - int cpu; - - for (cpu = 0; cpu < nr_cpu_ids; cpu++) - if (acpi_cpu_get_madt_gicc(cpu) && - uid == get_acpi_id_for_cpu(cpu)) - return cpu; - - return -EINVAL; -} +int acpi_get_cpu_uid(unsigned int cpu, u32 *uid); +int get_cpu_for_acpi_id(u32 uid); static inline void arch_fix_phys_package_id(int num, u32 slot) { } void __init acpi_init_cpus(void); |