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arm64/acpi: Create arch specific cpu to acpi id helper

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Its helpful to be able to lookup the acpi_processor_id associated
with a logical cpu. Provide an arm64 helper to do this.

Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Vijaya Kumar K <vkilari@codeaurora.org>
Tested-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Tested-by: Tomasz Nowicki <Tomasz.Nowicki@cavium.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Jeremy Linton 2018-05-11 18:57:59 -05:00 committed by Catalin Marinas
parent 9b97387c5c
commit 30d87bfacb
1 changed files with 4 additions and 0 deletions
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4
arch/arm64/include/asm/acpi.h
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@ -86,6 +86,10 @@ static inline bool acpi_has_cpu_in_madt(void)
}
struct acpi_madt_generic_interrupt *acpi_cpu_get_madt_gicc(int cpu);
static inline u32 get_acpi_id_for_cpu(unsigned int cpu)
{
return acpi_cpu_get_madt_gicc(cpu)->uid;
}
static inline void arch_fix_phys_package_id(int num, u32 slot) { }
void __init acpi_init_cpus(void);