arm64: kernel: cpu_{suspend/resume} implementation

[firefly-linux-kernel-4.4.55.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 c4cdb5e5b73d24027955169fb0e8be03972f7973..152413076503ba4731ce13d693ae2fa70d197795 100644 (file)
--- a/arch/arm64/include/asm/cpu_ops.h
+++ b/arch/arm64/include/asm/cpu_ops.h
@@ -39,6 +39,9 @@ struct device_node;
  *             from the cpu to be killed.
  * @cpu_die:   Makes a cpu leave the kernel. Must not fail. Called from the
  *             cpu being killed.
+ * @cpu_suspend: Suspends a cpu and saves the required context. May fail owing
+ *               to wrong parameters or error conditions. Called from the
+ *               CPU being suspended. Must be called with IRQs disabled.
  */
 struct cpu_operations {
        const char      *name;
@@ -50,6 +53,9 @@ struct cpu_operations {
        int             (*cpu_disable)(unsigned int cpu);
        void            (*cpu_die)(unsigned int cpu);
 #endif
+#ifdef CONFIG_ARM64_CPU_SUSPEND
+       int             (*cpu_suspend)(unsigned long);
+#endif
 };
 
 extern const struct cpu_operations *cpu_ops[NR_CPUS];