Hi,

On 11/20/2017 11:06 AM, Sudeep Holla wrote:

On Thu, Nov 09, 2017 at 03:03:05PM -0600, Jeremy Linton wrote:

quoted

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 <redacted>
---
  arch/arm64/include/asm/acpi.h | 4 ++++
  1 file changed, 4 insertions(+)

diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h
index 59cca1d6ec54..408e7989d3a2 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;
+}

If I followed the series correctly, this function is used in 2/9 already.
So this needs to be moved down in the series to avoid build failure during
bisection.

I don't believe there is a bisection failure here because the code using 
this routine is not yet being compiled until the 4/9.