ftrace: fix boot trace sched startup

Impact: boot tracer startup modified

The boot tracer calls into some of the schedule tracing private functions
that should not be exported. This patch cleans it up, and makes
way for further changes in the ftrace infrastructure.

This patch adds a api to assign a tracer array to the schedule
context switch tracer.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 7 insertions, 2 deletions

diff --git a/kernel/trace/trace_boot.c b/kernel/trace/trace_boot.c
index bd5046c9deb7..662cb9198906 100644
--- a/kernel/trace/trace_boot.c
+++ b/kernel/trace/trace_boot.c
@@ -39,7 +39,12 @@ void disable_boot_trace(void)
 
 static void reset_boot_trace(struct trace_array *tr)
 {
-        sched_switch_trace.reset(tr);
+        int cpu;
+
+        tr->time_start = ftrace_now(tr->cpu);
+
+        for_each_online_cpu(cpu)
+                tracing_reset(tr, cpu);
 }
 
 static void boot_trace_init(struct trace_array *tr)
@@ -50,7 +55,7 @@ static void boot_trace_init(struct trace_array *tr)
         for_each_cpu_mask(cpu, cpu_possible_map)
                 tracing_reset(tr, cpu);
 
-        sched_switch_trace.init(tr);
+        tracing_cmdline_assign_trace(tr);
 }
 
 static void boot_trace_ctrl_update(struct trace_array *tr)