srcu: Add guards for notrace variants of SRCU-fast readers

This adds the usual scoped_guard(srcu_fast_notrace, &my_srcu) and
guard(srcu_fast_notrace)(&my_srcu).

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: <bpf@vger.kernel.org>

Author: paulmckrcu

include/linux/srcu.h

@@ -515,4 +515,9 @@ DEFINE_LOCK_GUARD_1(srcu_fast, struct srcu_struct,
 		    srcu_read_unlock_fast(_T->lock, _T->scp),
 		    struct srcu_ctr __percpu *scp)
 
+DEFINE_LOCK_GUARD_1(srcu_fast_notrace, struct srcu_struct,
+		    _T->scp = srcu_read_lock_fast_notrace(_T->lock),
+		    srcu_read_unlock_fast_notrace(_T->lock, _T->scp),
+		    struct srcu_ctr __percpu *scp)
+
 #endif