| Message ID | 20180228220619.6992-5-jeremy.linton@arm.com (mailing list archive) |
|---|---|
| State | Changes Requested, archived |
| Headers | show |
On 28/02/18 22:06, Jeremy Linton wrote: > Its helpful to be able to lookup the acpi_processor_id associated > with a logical cpu. Provide an arm64 helper to do this. > This patch on it's own is good, but it's quite generic and made to look at it again. Sorry for missing this earlier. Can we use "per_cpu(processors, cpu)->acpi_id" at call sites instead ? Or you can make that a generic helper using above expression ?
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index 32f465a80e4e..0db62a4cbce2 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -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);
Its helpful to be able to lookup the acpi_processor_id associated with a logical cpu. Provide an arm64 helper to do this. Signed-off-by: Jeremy Linton <jeremy.linton@arm.com> --- arch/arm64/include/asm/acpi.h | 4 ++++ 1 file changed, 4 insertions(+)