diff mbox series

[v6,04/12] arm64/acpi: Create arch specific cpu to acpi id helper

Message ID 20180113005920.28658-5-jeremy.linton@arm.com
State Superseded
Headers show
Series [v6,01/12] drivers: base: cacheinfo: move cache_setup_of_node() | expand

Commit Message

Jeremy Linton Jan. 13, 2018, 12:59 a.m. UTC 
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(+)

-- 
2.13.5
diff mbox series

Patch

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);