tracing: remove CALLER_ADDR2 from wakeup tracer

[linux-2.6-omap-h63xx.git] / kernel / trace / trace_sched_wakeup.c

diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c
index 3c5ad6b2ec846256472d83348dbe5747d034c963..5bc00e8f153ebb8682589caa37b553b05800f6b0 100644 (file)
--- a/kernel/trace/trace_sched_wakeup.c
+++ b/kernel/trace/trace_sched_wakeup.c
@@ -154,7 +154,7 @@ probe_wakeup_sched_switch(struct rq *rq, struct task_struct *prev,
        if (unlikely(!tracer_enabled || next != wakeup_task))
                goto out_unlock;
 
-       trace_function(wakeup_trace, CALLER_ADDR1, CALLER_ADDR2, flags, pc);
+       trace_function(wakeup_trace, CALLER_ADDR0, CALLER_ADDR1, flags, pc);
        tracing_sched_switch_trace(wakeup_trace, prev, next, flags, pc);
 
        /*
@@ -257,6 +257,12 @@ probe_wakeup(struct rq *rq, struct task_struct *p, int success)
        data = wakeup_trace->data[wakeup_cpu];
        data->preempt_timestamp = ftrace_now(cpu);
        tracing_sched_wakeup_trace(wakeup_trace, p, current, flags, pc);
+
+       /*
+        * We must be careful in using CALLER_ADDR2. But since wake_up
+        * is not called by an assembly function  (where as schedule is)
+        * it should be safe to use it here.
+        */
        trace_function(wakeup_trace, CALLER_ADDR1, CALLER_ADDR2, flags, pc);
 
 out_locked: