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clocksource: Remove unused clocksource_change_rating

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clocksource_change_rating() has been unused since 2017's commit
63ed4e0c67 ("Drivers: hv: vmbus: Consolidate all Hyper-V specific clocksource code")

Remove it.

__clocksource_change_rating now only has one use which is ifdef'd.
Move it into the ifdef'd section.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/all/20241010135446.213098-1-linux@treblig.org
This commit is contained in:
Dr. David Alan Gilbert 2024-10-10 14:54:46 +01:00 committed by Thomas Gleixner
parent b7f6d3a09d
commit bafffd56c6
2 changed files with 10 additions and 31 deletions
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1
include/linux/clocksource.h
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@ -215,7 +215,6 @@ static inline s64 clocksource_cyc2ns(u64 cycles, u32 mult, u32 shift)
extern int clocksource_unregister(struct clocksource*);
extern void clocksource_touch_watchdog(void);
extern void clocksource_change_rating(struct clocksource *cs, int rating);
extern void clocksource_suspend(void);
extern void clocksource_resume(void);
extern struct clocksource * __init clocksource_default_clock(void);

40
kernel/time/clocksource.c
View File

@ -20,6 +20,8 @@
#include "tick-internal.h"
#include "timekeeping_internal.h"
static void clocksource_enqueue(struct clocksource *cs);
static noinline u64 cycles_to_nsec_safe(struct clocksource *cs, u64 start, u64 end)
{
u64 delta = clocksource_delta(end, start, cs->mask);
@ -171,7 +173,6 @@ static inline void clocksource_watchdog_unlock(unsigned long *flags)
}
static int clocksource_watchdog_kthread(void *data);
static void __clocksource_change_rating(struct clocksource *cs, int rating);
static void clocksource_watchdog_work(struct work_struct *work)
{
@ -191,6 +192,13 @@ static void clocksource_watchdog_work(struct work_struct *work)
kthread_run(clocksource_watchdog_kthread, NULL, "kwatchdog");
}
static void clocksource_change_rating(struct clocksource *cs, int rating)
{
list_del(&cs->list);
cs->rating = rating;
clocksource_enqueue(cs);
}
static void __clocksource_unstable(struct clocksource *cs)
{
cs->flags &= ~(CLOCK_SOURCE_VALID_FOR_HRES | CLOCK_SOURCE_WATCHDOG);
@ -697,7 +705,7 @@ static int __clocksource_watchdog_kthread(void)
list_for_each_entry_safe(cs, tmp, &watchdog_list, wd_list) {
if (cs->flags & CLOCK_SOURCE_UNSTABLE) {
list_del_init(&cs->wd_list);
__clocksource_change_rating(cs, 0);
clocksource_change_rating(cs, 0);
select = 1;
}
if (cs->flags & CLOCK_SOURCE_RESELECT) {
@ -1255,34 +1263,6 @@ int __clocksource_register_scale(struct clocksource *cs, u32 scale, u32 freq)
}
EXPORT_SYMBOL_GPL(__clocksource_register_scale);
static void __clocksource_change_rating(struct clocksource *cs, int rating)
{
list_del(&cs->list);
cs->rating = rating;
clocksource_enqueue(cs);
}
/**
* clocksource_change_rating - Change the rating of a registered clocksource
* @cs: clocksource to be changed
* @rating: new rating
*/
void clocksource_change_rating(struct clocksource *cs, int rating)
{
unsigned long flags;
mutex_lock(&clocksource_mutex);
clocksource_watchdog_lock(&flags);
__clocksource_change_rating(cs, rating);
clocksource_watchdog_unlock(&flags);
clocksource_select();
clocksource_select_watchdog(false);
clocksource_suspend_select(false);
mutex_unlock(&clocksource_mutex);
}
EXPORT_SYMBOL(clocksource_change_rating);
/*
* Unbind clocksource @cs. Called with clocksource_mutex held
*/