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powerpc: export cpu_to_core_id()

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Export cpu_to_core_id(). This will be used by the lpfc driver.

This enables topology_core_id() from <linux/topology.h> (defined
to cpu_to_core_id() in arch/powerpc/include/asm/topology.h) to be
used by (non-builtin) modules.

That is arch-neutral, already used by eg, drivers/base/topology.c,
but it is builtin (obj-y in Makefile) thus didn't need the export.

Since the module uses topology_core_id() and this is defined to
cpu_to_core_id(), it needs the export, otherwise:

    ERROR: "cpu_to_core_id" [drivers/scsi/lpfc/lpfc.ko] undefined!

Tested on next-20160601.

Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mauricio Faria de Oliveira 2016-06-02 08:45:14 -03:00 committed by Michael Ellerman
parent 16c19a2e98
commit f8ab481066
1 changed files with 1 additions and 0 deletions
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arch/powerpc/kernel/smp.c
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@ -595,6 +595,7 @@ int cpu_to_core_id(int cpu)
of_node_put(np);
return id;
}
EXPORT_SYMBOL_GPL(cpu_to_core_id);
/* Helper routines for cpu to core mapping */
int cpu_core_index_of_thread(int cpu)