[PATCH 4/8] sched,rcu,tracing: Mark preempt_count_{add,sub}() notrace

[Peter Zijlstra <peterz@xxxxxxxxxxxxx>]

Because of the requirement that no tracing happens until after we've
incremented preempt_count, see nmi_enter() / trace_rcu_enter(), mark
these functions as notrace.

Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
---
 kernel/sched/core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3781,7 +3781,7 @@ static inline void preempt_latency_start
 	}
 }
 
-void preempt_count_add(int val)
+void notrace preempt_count_add(int val)
 {
 #ifdef CONFIG_DEBUG_PREEMPT
 	/*
@@ -3813,7 +3813,7 @@ static inline void preempt_latency_stop(
 		trace_preempt_on(CALLER_ADDR0, get_lock_parent_ip());
 }
 
-void preempt_count_sub(int val)
+void notrace preempt_count_sub(int val)
 {
 #ifdef CONFIG_DEBUG_PREEMPT
 	/*