tracing, preempt: Squash _rcuidle tracing

Extend commit 9aedeae ("tracing, hardirq: No moar _rcuidle()
tracing") to also cover trace_preempt_{on,off}() which were
mysteriously untouched.

Fixes: 9aedeae ("tracing, hardirq: No moar _rcuidle() tracing")
Reported-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lkml.kernel.org/r/Y9D5AfnOukWNOZ5q@hirez.programming.kicks-ass.net
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

kernel/trace/trace_preemptirq.c

@@ -119,15 +119,13 @@ NOKPROBE_SYMBOL(trace_hardirqs_off_caller);
 
 void trace_preempt_on(unsigned long a0, unsigned long a1)
 {
-	if (!in_nmi())
-		trace_preempt_enable_rcuidle(a0, a1);
+	trace(preempt_enable)(a0, a1);
 	tracer_preempt_on(a0, a1);
 }
 
 void trace_preempt_off(unsigned long a0, unsigned long a1)
 {
-	if (!in_nmi())
-		trace_preempt_disable_rcuidle(a0, a1);
+	trace(preempt_disable)(a0, a1);
 	tracer_preempt_off(a0, a1);
 }
 #endif