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Disable kernel preemption, fix requesting rescheduling
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This commit is contained in:
Kamil Kowalczyk
2026-01-22 19:32:15 +01:00
parent c26fd3cb2b
commit 7bb3b77ede
11 changed files with 32 additions and 27 deletions
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14
kernel/proc/proc.c
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@@ -289,7 +289,7 @@ static void proc_reap (void) {
}
}
void proc_sched (void* regs) {
void proc_sched (void) {
spin_lock_ctx_t ctxcpu, ctxpr;
int s_cycles = atomic_fetch_add (&sched_cycles, 1);
@@ -303,15 +303,13 @@ void proc_sched (void* regs) {
spin_lock (&cpu->lock, &ctxcpu);
struct proc* prev = cpu->proc_current;
next = proc_find_sched (cpu);
if (prev != NULL) {
spin_lock (&prev->lock, &ctxpr);
memcpy (&prev->pdata.regs, regs, sizeof (struct saved_regs));
memcpy (&prev->pdata.regs, &cpu->regs, sizeof (struct saved_regs));
spin_unlock (&prev->lock, &ctxpr);
}
next = proc_find_sched (cpu);
if (next) {
cpu->proc_current = next;
spin_unlock (&cpu->lock, &ctxcpu);
@@ -348,7 +346,7 @@ void proc_kill (struct proc* proc) {
static void proc_irq_sched (void* arg, void* regs) {
(void)arg;
proc_sched (regs);
proc_sched ();
}
static void proc_kpproc_init (void) {
@@ -405,8 +403,8 @@ static void proc_kpproc_init (void) {
void proc_init (void) {
#if defined(__x86_64__)
irq_attach (&proc_irq_sched, NULL, SCHED_PREEMPT_TIMER, IRQ_INTERRUPT_SAFE);
irq_attach (&proc_irq_sched, NULL, CPU_REQUEST_SCHED, IRQ_INTERRUPT_SAFE);
irq_attach (&proc_irq_sched, NULL, SCHED_PREEMPT_TIMER);
irq_attach (&proc_irq_sched, NULL, CPU_REQUEST_SCHED);
#endif
proc_kpproc_init ();

2
kernel/proc/proc.h
View File

@@ -60,7 +60,7 @@ struct proc {
struct proc_resources* resources;
};
void proc_sched (void* regs);
void proc_sched (void);
void proc_kill (struct proc* proc);
bool proc_map (struct proc* proc, uintptr_t start_paddr, uintptr_t start_vaddr, size_t pages,
uint32_t flags);