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Diffstat (limited to 'arch/arm64/include/asm/cpu_ops.h')
-rw-r--r--arch/arm64/include/asm/cpu_ops.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_ops.h
index 1a98dbfc4a5f..c4cdb5e5b73d 100644
--- a/arch/arm64/include/asm/cpu_ops.h
+++ b/arch/arm64/include/asm/cpu_ops.h
@@ -34,6 +34,11 @@ struct device_node;
* @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.
+ * @cpu_disable: Prepares a cpu to die. May fail for some mechanism-specific
+ * reason, which will cause the hot unplug to be aborted. Called
+ * from the cpu to be killed.
+ * @cpu_die: Makes a cpu leave the kernel. Must not fail. Called from the
+ * cpu being killed.
*/
struct cpu_operations {
const char *name;
@@ -41,6 +46,10 @@ struct cpu_operations {
int (*cpu_prepare)(unsigned int);
int (*cpu_boot)(unsigned int);
void (*cpu_postboot)(void);
+#ifdef CONFIG_HOTPLUG_CPU
+ int (*cpu_disable)(unsigned int cpu);
+ void (*cpu_die)(unsigned int cpu);
+#endif
};
extern const struct cpu_operations *cpu_ops[NR_CPUS];