arm64: factor out spin-table boot method

[deliverable/linux.git] / arch / arm64 / include / asm / cpu_ops.h

diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_ops.h
index 3c60c8d1d928aeeac2d19632b8cbe4c120ae9a43..67bc4fd83798c625993ca22bde489210fb98d83a 100644 (file)
--- a/arch/arm64/include/asm/cpu_ops.h
+++ b/arch/arm64/include/asm/cpu_ops.h
@@ -21,10 +21,26 @@
 
 struct device_node;
 
+/**
+ * struct cpu_operations - Callback operations for hotplugging CPUs.
+ *
+ * @name:      Name of the property as appears in a devicetree cpu node's
+ *             enable-method property.
+ * @cpu_init:  Reads any data necessary for a specific enable-method from the
+ *             devicetree, for a given cpu node and proposed logical id.
+ * @cpu_prepare: Early one-time preparation step for a cpu. If there is a
+ *             mechanism for doing so, tests whether it is possible to boot
+ *             the given CPU.
+ * @cpu_boot:  Boots a cpu into the kernel.
+ * @cpu_postboot: Optionally, perform any post-boot cleanup or necesary
+ *             synchronisation. Called from the cpu being booted.
+ */
 struct cpu_operations {
        const char      *name;
        int             (*cpu_init)(struct device_node *, unsigned int);
        int             (*cpu_prepare)(unsigned int);
+       int             (*cpu_boot)(unsigned int);
+       void            (*cpu_postboot)(void);
 };
 
 extern const struct cpu_operations *cpu_ops[NR_CPUS];