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dpc: add dpc_prepare

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iretq
2025-12-28 03:50:00 +01:00
parent a81ae88afb
commit 99d3374fc0
11 changed files with 45 additions and 27 deletions
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kernel-src/sys/scheduler/scheduler.c
+8 -6
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@@ -22,7 +22,7 @@ static __attribute__((noreturn)) void switch_thread(thread_t *thread) {
thread_t* current = current_thread();
sched_thread_running_callback(thread);
current_cpu()->thread = thread;
if(current == NULL || thread->vmmctx != current->vmmctx)
@@ -230,7 +230,7 @@ static void dopreempt() {
switch_thread(next);
}
static void preempt_dpc(context_t *context, dpcarg_t arg) {
static void sched_reschedule_dpc(context_t *context, dpcarg_t arg) {
thread_t* current = current_thread();
interrupt_set(false);
@@ -250,18 +250,18 @@ static void preempt_dpc(context_t *context, dpcarg_t arg) {
// IPL_DPC
static void reschedule_timer_dpc(context_t *context, dpcarg_t arg) {
dpc_enqueue(&current_cpu()->reschedule_dpc, preempt_dpc, NULL);
dpc_enqueue(&current_cpu()->reschedule_dpc, NULL);
}
// IPL_MAX
static void reschedule_ipi(isr_t *, context_t *) {
dpc_enqueue(&current_cpu()->reschedule_dpc, preempt_dpc, NULL);
dpc_enqueue(&current_cpu()->reschedule_dpc, NULL);
}
void sched_preempt_cpu(cpu_t *cpu) {
long ipl = interrupt_raiseipl(IPL_DPC);
if (cpu == current_cpu()) {
dpc_enqueue(&cpu->reschedule_dpc, preempt_dpc, NULL);
dpc_enqueue(&cpu->reschedule_dpc, NULL);
} else {
arch_smp_send_ipi(cpu, cpu->reschedule_isr, ARCH_SMP_IPI_TARGET, false);
}
@@ -347,6 +347,7 @@ void sched_load_balancer(context_t *, dpcarg_t);
void sched_ap_entry() {
SPINLOCK_INIT(current_cpu()->sched_lock);
dpc_prepare(&current_cpu()->reschedule_dpc, sched_reschedule_dpc);
set_up_bitmaps();
current_cpu()->schedulerstack = vmm_map(NULL, SCHEDULER_STACK_SIZE, VMM_FLAGS_ALLOCATE, ARCH_MMU_FLAGS_READ | ARCH_MMU_FLAGS_WRITE | ARCH_MMU_FLAGS_NOEXEC, NULL);
@@ -374,7 +375,8 @@ void sched_init() {
SPINLOCK_INIT(current_cpu()->sched_lock);
SPINLOCK_INIT(sched_idle_cpu_bitmap_lock);
dpc_prepare(&current_cpu()->reschedule_dpc, sched_reschedule_dpc);
set_up_bitmaps();
__assert(bitmap_init(&sched_idle_cpu_bitmap, arch_smp_get_cpu_count()) == 0);