[PATCH 1/3] time/jiffies: change register_refined_jiffies() to void __init

Su Hui
2025-04-24T14:48:30Z

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@nfschina.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