lib/percpu-refcount.c: use a more common logging style

Remove the trailing newline from the used-once pr_fmt and add it to the
single use of pr_<level> in this code to use a more common logging style.

Miscellanea:

o Use %lu in the pr_debug format and remove the unnecessary cast

Signed-off-by: Joe Perches <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Cc: Christophe JAILLET <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>

lib/percpu-refcount.c

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-#define pr_fmt(fmt) "%s: " fmt "\n", __func__
+#define pr_fmt(fmt) "%s: " fmt, __func__
 
 #include <linux/kernel.h>
 #include <linux/sched.h>
@@ -141,8 +141,8 @@ static void percpu_ref_switch_to_atomic_rcu(struct rcu_head *rcu)
 	for_each_possible_cpu(cpu)
 		count += *per_cpu_ptr(percpu_count, cpu);
 
-	pr_debug("global %ld percpu %ld",
-		 atomic_long_read(&ref->count), (long)count);
+	pr_debug("global %lu percpu %lu\n",
+		 atomic_long_read(&ref->count), count);
 
 	/*
 	 * It's crucial that we sum the percpu counters _before_ adding the sum