tracing/fastboot: Use the ring-buffer timestamp for initcall entries

[net-next-2.6.git] / include / trace / boot.h

diff --git a/include/trace/boot.h b/include/trace/boot.h
index 4cbe64e46cdc597796bc7044c6d7bdfe5ee56926..6b54537eab02d2457f96333b4c1d1a0b6d689dee 100644 (file)
--- a/include/trace/boot.h
+++ b/include/trace/boot.h
@@ -2,22 +2,30 @@
 #define _LINUX_TRACE_BOOT_H
 
 /*
- * Structure which defines the trace of an initcall.
+ * Structure which defines the trace of an initcall
+ * while it is called.
  * You don't have to fill the func field since it is
  * only used internally by the tracer.
  */
-struct boot_trace {
+struct boot_trace_call {
        pid_t                   caller;
        char                    func[KSYM_NAME_LEN];
-       int                     result;
-       unsigned long long      duration;               /* usecs */
-       ktime_t                 calltime;
-       ktime_t                 rettime;
+};
+
+/*
+ * Structure which defines the trace of an initcall
+ * while it returns.
+ */
+struct boot_trace_ret {
+       char                    func[KSYM_NAME_LEN];
+       int                             result;
+       unsigned long long      duration;               /* nsecs */
 };
 
 #ifdef CONFIG_BOOT_TRACER
-/* Append the trace on the ring-buffer */
-extern void trace_boot(struct boot_trace *it, initcall_t fn);
+/* Append the traces on the ring-buffer */
+extern void trace_boot_call(struct boot_trace_call *bt, initcall_t fn);
+extern void trace_boot_ret(struct boot_trace_ret *bt, initcall_t fn);
 
 /* Tells the tracer that smp_pre_initcall is finished.
  * So we can start the tracing
@@ -34,7 +42,12 @@ extern void enable_boot_trace(void);
  */
 extern void disable_boot_trace(void);
 #else
-static inline void trace_boot(struct boot_trace *it, initcall_t fn) { }
+static inline
+void trace_boot_call(struct boot_trace_call *bt, initcall_t fn) { }
+
+static inline
+void trace_boot_ret(struct boot_trace_ret *bt, initcall_t fn) { }
+
 static inline void start_boot_trace(void) { }
 static inline void enable_boot_trace(void) { }
 static inline void disable_boot_trace(void) { }