ftrace: cleanups

factor out code and clean it up.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 5 insertions, 3 deletions

diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 88edbf1f6788..cc1d34b8b771 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -53,12 +53,12 @@ struct trace_entry {
  * the trace, etc.)
  */
 struct trace_array_cpu {
-        void                    *trace;
         void                    *trace_current;
-        unsigned                trace_current_idx;
         struct list_head        trace_pages;
-        unsigned long           trace_idx;
         atomic_t                disabled;
+        /* these fields get copied into max-trace: */
+        unsigned                trace_current_idx;
+        unsigned long           trace_idx;
         unsigned long           saved_latency;
         unsigned long           critical_start;
         unsigned long           critical_end;
@@ -216,4 +216,6 @@ extern int trace_selftest_startup_sched_switch(struct tracer *trace,
 #endif
 #endif /* CONFIG_FTRACE_STARTUP_TEST */
 
+extern void *head_page(struct trace_array_cpu *data);
+
 #endif /* _LINUX_KERNEL_TRACE_H */