x86/asm: Rename rep_nop() to native_pause()

Rename rep_nop() function to what it really does.

No functional change intended.

Suggested-by: David Laight <david.laight.linux@gmail.com>
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Link: https://lore.kernel.org/r/20250418080805.83679-1-ubizjak@gmail.com

arch/x86/include/asm/vdso/processor.h

@@ -8,14 +8,14 @@
 #ifndef __ASSEMBLER__
 
 /* PAUSE is a good thing to insert into busy-wait loops. */
-static __always_inline void rep_nop(void)
+static __always_inline void native_pause(void)
 {
 	asm volatile("pause" ::: "memory");
 }
 
 static __always_inline void cpu_relax(void)
 {
-	rep_nop();
+	native_pause();
 }
 
 struct getcpu_cache;

arch/x86/kernel/apic/io_apic.c

@@ -1486,7 +1486,7 @@ static void __init delay_with_tsc(void)
 	 * 1 GHz == 40 jiffies
 	 */
 	do {
-		rep_nop();
+		native_pause();
 		now = rdtsc();
 	} while ((now - start) < 40000000000ULL / HZ &&	time_before_eq(jiffies, end));
 }

arch/x86/lib/delay.c

@@ -75,7 +75,7 @@ static void delay_tsc(u64 cycles)
 
 		/* Allow RT tasks to run */
 		preempt_enable();
-		rep_nop();
+		native_pause();
 		preempt_disable();
 
 		/*