Re: [RFC PATCH v2 26/35] arm64: acpi: Move get_cpu_for_acpi_id() to a header

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On 9/14/23 02:38, James Morse wrote:
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@xxxxxxx>
---
  arch/arm64/include/asm/acpi.h | 11 +++++++++++
  arch/arm64/kernel/acpi_numa.c | 11 -----------
  2 files changed, 11 insertions(+), 11 deletions(-)


Reviewed-by: Gavin Shan <gshan@xxxxxxxxxx>

diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
index 4d537d56eb84..ce5045038e87 100644
--- a/arch/arm64/include/asm/acpi.h
+++ b/arch/arm64/include/asm/acpi.h
@@ -100,6 +100,17 @@ 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 (uid == get_acpi_id_for_cpu(cpu))
+			return cpu;
+
+	return -EINVAL;
+}
+
  static inline void arch_fix_phys_package_id(int num, u32 slot) { }
  void __init acpi_init_cpus(void);
  int apei_claim_sea(struct pt_regs *regs);
diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c
index e51535a5f939..0c036a9a3c33 100644
--- a/arch/arm64/kernel/acpi_numa.c
+++ b/arch/arm64/kernel/acpi_numa.c
@@ -34,17 +34,6 @@ int __init acpi_numa_get_nid(unsigned int cpu)
  	return acpi_early_node_map[cpu];
  }
-static inline int get_cpu_for_acpi_id(u32 uid)
-{
-	int cpu;
-
-	for (cpu = 0; cpu < nr_cpu_ids; cpu++)
-		if (uid == get_acpi_id_for_cpu(cpu))
-			return cpu;
-
-	return -EINVAL;
-}
-
  static int __init acpi_parse_gicc_pxm(union acpi_subtable_headers *header,
  				      const unsigned long end)
  {




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