On 2014-7-24 22:43, Mark Brown wrote:

On Thu, Jul 24, 2014 at 09:00:10PM +0800, Hanjun Guo wrote:

quoted

+/*
+ * Use the CPU slot number provided by ACPI to update the physical
+ * package id when cpuid_topo->cluster_id is not available, then we
+ * can get the right value in the "physical id" field of /proc/cpuinfo.
+ */
+void arch_fix_phys_package_id(int num, u32 slot)
+{
+	struct cpu_topology *cpuid_topo = &cpu_topology[num];
+
+	if (cpuid_topo->cluster_id == -1)
+		cpuid_topo->cluster_id = slot;
+}
+EXPORT_SYMBOL_GPL(arch_fix_phys_package_id);

As I said on the previous version of this patch are you sure this runs
at a point between the cluster ID getting initialized to -1 and the slot
being initialized (bear in mind that we now use MPIDR information if
availabe).  I don't understand why we don't just unconditionally use the
value given.

Ah, sorry, it should be unconditionally used as you said, and I remember
the comments in last version, but the patch shows not, must be something
wrong, will update it in next version.

Thanks
Hanjun