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FROMLIST: time/sched_clock: Export sched_clock_register()

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clocksource driver may use sched_clock_register()
to resigter itself as a sched_clock source.
Export it to support building such driver
as module, like timer-mediatek.c

Signed-off-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
Signed-off-by: Walter Chang <walter.chang@mediatek.com>
Acked-by: John Stultz <jstultz@google.com>

Bug: 161675989
Link: https://lore.kernel.org/lkml/20230517022557.24388-2-walter.chang@mediatek.com/
Change-Id: Ib052d1fd7ccf6a7422eb6f1755515e1236285e01
Signed-off-by: Carlos Llamas <cmllamas@google.com>
This commit is contained in:
Chun-Hung Wu 2023-05-17 10:25:45 +08:00 committed by Carlos Llamas
parent 08901ec9f1
commit 858a548331
1 changed files with 2 additions and 2 deletions
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4
kernel/time/sched_clock.c
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@ -161,8 +161,7 @@ static enum hrtimer_restart sched_clock_poll(struct hrtimer *hrt)
return HRTIMER_RESTART; return HRTIMER_RESTART;
} }
void __init void sched_clock_register(u64 (*read)(void), int bits, unsigned long rate)
sched_clock_register(u64 (*read)(void), int bits, unsigned long rate)
{ {
u64 res, wrap, new_mask, new_epoch, cyc, ns; u64 res, wrap, new_mask, new_epoch, cyc, ns;
u32 new_mult, new_shift; u32 new_mult, new_shift;
@ -234,6 +233,7 @@ sched_clock_register(u64 (*read)(void), int bits, unsigned long rate)
pr_debug("Registered %pS as sched_clock source\n", read); pr_debug("Registered %pS as sched_clock source\n", read);
} }
EXPORT_SYMBOL_GPL(sched_clock_register);
void __init generic_sched_clock_init(void) void __init generic_sched_clock_init(void)
{ {