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Diffstat (limited to 'include/trace/boot.h')
-rw-r--r--include/trace/boot.h31
1 files changed, 22 insertions, 9 deletions
diff --git a/include/trace/boot.h b/include/trace/boot.h
index 4cbe64e46cd..6b54537eab0 100644
--- 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) { }