diff options
Diffstat (limited to 'arch/arm64/include/asm/cpu_ops.h')
| -rw-r--r-- | arch/arm64/include/asm/cpu_ops.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_ops.h index 3c60c8d..67bc4fd 100644 --- 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]; |