linux-kernel - [PATCH 1/3] time/jiffies: change register_refined_jiffies() to void _

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Message-Id: <20250424144819.24884-2-suhui@nfschina.com>
Date: Thu, 24 Apr 2025 22:48:18 +0800
From: Su Hui <suhui@...china.com>
To: john.stultz@...aro.org,
	tglx@...utronix.de
Cc: Su Hui <suhui@...china.com>,
	eahariha@...ux.microsoft.com,
	anna-maria@...utronix.de,
	geert@...ux-m68k.org,
	ojeda@...nel.org,
	linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH 1/3] time/jiffies: change register_refined_jiffies() to void __init

register_refined_jiffies() is only used in setup code and always return 0.
Mark it to __init to save some bytes and change it to void.

Signed-off-by: Su Hui <suhui@...china.com>
---
 include/linux/jiffies.h | 2 +-
 kernel/time/jiffies.c   | 5 +----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index 0ea8c9887429..91b20788273d 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -59,7 +59,7 @@
 /* LATCH is used in the interval timer and ftape setup. */
 #define LATCH ((CLOCK_TICK_RATE + HZ/2) / HZ)	/* For divider */
 
-extern int register_refined_jiffies(long clock_tick_rate);
+extern void register_refined_jiffies(long clock_tick_rate);
 
 /* TICK_USEC is the time between ticks in usec assuming SHIFTED_HZ */
 #define TICK_USEC ((USEC_PER_SEC + HZ/2) / HZ)
diff --git a/kernel/time/jiffies.c b/kernel/time/jiffies.c
index bc4db9e5ab70..34eeacac2253 100644
--- a/kernel/time/jiffies.c
+++ b/kernel/time/jiffies.c
@@ -75,13 +75,11 @@ struct clocksource * __init __weak clocksource_default_clock(void)
 
 static struct clocksource refined_jiffies;
 
-int register_refined_jiffies(long cycles_per_second)
+void __init register_refined_jiffies(long cycles_per_second)
 {
 	u64 nsec_per_tick, shift_hz;
 	long cycles_per_tick;
 
-
-
 	refined_jiffies = clocksource_jiffies;
 	refined_jiffies.name = "refined-jiffies";
 	refined_jiffies.rating++;
@@ -100,5 +98,4 @@ int register_refined_jiffies(long cycles_per_second)
 	refined_jiffies.mult = ((u32)nsec_per_tick) << JIFFIES_SHIFT;
 
 	__clocksource_register(&refined_jiffies);
-	return 0;
 }
-- 
2.30.2