调整代码，以支持cpu usage

1 files changed, 14 insertions, 0 deletions

diff --git a/libcpu/arm/cortex-a/interrupt.c b/libcpu/arm/cortex-a/interrupt.c
index 474a23fee1..f90f1c0094 100644
--- a/libcpu/arm/cortex-a/interrupt.c
+++ b/libcpu/arm/cortex-a/interrupt.c
@@ -27,6 +27,20 @@ struct rt_irq_desc isr_table[MAX_HANDLERS];
 rt_uint32_t rt_interrupt_from_thread        = 0;
 rt_uint32_t rt_interrupt_to_thread          = 0;
 rt_uint32_t rt_thread_switch_interrupt_flag = 0;
+
+#ifdef RT_USING_HOOK
+static void (*rt_interrupt_switch_hook)(void);
+
+void rt_interrupt_switch_sethook(void (*hook)(void))
+{
+    rt_interrupt_switch_hook = hook;
+}
+#endif
+
+void rt_interrupt_hook(void)
+{
+    RT_OBJECT_HOOK_CALL(rt_interrupt_switch_hook, ());
+}
 #endif
 
 const unsigned int VECTOR_BASE = 0x00;