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kernel: timer: Adding support to CONFIG_MULTITHREADING=n

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Updated timer to not touch thread/scheduler code when multithreading
is off.

Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
This commit is contained in:
Krzysztof Chruscinski 2021-04-14 13:36:58 +02:00 • committed by Carles Cufí
commit dd0715c770
1 changed files with 37 additions and 5 deletions
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42
kernel/timer.c
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@ -66,6 +66,10 @@ void z_timer_expiration_handler(struct _timeout *t)
timer->expiry_fn(timer);
}
if (!IS_ENABLED(CONFIG_MULTITHREADING)) {
return;
}
thread = z_waitq_head(&timer->wait_q);
if (thread == NULL) {
@ -96,7 +100,10 @@ void k_timer_init(struct k_timer *timer,
timer->stop_fn = stop_fn;
timer->status = 0U;
z_waitq_init(&timer->wait_q);
if (IS_ENABLED(CONFIG_MULTITHREADING)) {
z_waitq_init(&timer->wait_q);
}
z_init_timeout(&timer->timeout);
SYS_TRACING_OBJ_INIT(k_timer, timer);
@ -165,11 +172,13 @@ void z_impl_k_timer_stop(struct k_timer *timer)
timer->stop_fn(timer);
}
struct k_thread *pending_thread = z_unpend1_no_timeout(&timer->wait_q);
if (IS_ENABLED(CONFIG_MULTITHREADING)) {
struct k_thread *pending_thread = z_unpend1_no_timeout(&timer->wait_q);
if (pending_thread != NULL) {
z_ready_thread(pending_thread);
z_reschedule_unlocked();
if (pending_thread != NULL) {
z_ready_thread(pending_thread);
z_reschedule_unlocked();
}
}
}
@ -206,6 +215,29 @@ uint32_t z_impl_k_timer_status_sync(struct k_timer *timer)
{
__ASSERT(!arch_is_in_isr(), "");
if (!IS_ENABLED(CONFIG_MULTITHREADING)) {
uint32_t result;
do {
k_spinlock_key_t key = k_spin_lock(&lock);
if (!z_is_inactive_timeout(&timer->timeout)) {
result = *(volatile uint32_t *)&timer->status;
timer->status = 0U;
k_spin_unlock(&lock, key);
if (result > 0) {
break;
}
} else {
result = timer->status;
k_spin_unlock(&lock, key);
break;
}
} while (true);
return result;
}
k_spinlock_key_t key = k_spin_lock(&lock);
uint32_t result = timer->status;