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Use RW spin locks
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This commit is contained in:
Kamil Kowalczyk
2026-01-09 19:53:08 +01:00
parent a5283283f6
commit 6a474c21a0
9 changed files with 198 additions and 39 deletions
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30
kernel/irq/irq.c
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@@ -2,7 +2,7 @@
#include <libk/list.h>
#include <libk/std.h>
#include <mm/liballoc.h>
#include <sync/spin_lock.h>
#include <sync/rw_spin_lock.h>
#if defined(__x86_64__)
#include <amd64/apic.h>
@@ -12,7 +12,7 @@
/* TODO: figure out a generic way to work with IRQs */
static struct list_node_link* irqs = NULL;
static spin_lock_t irqs_lock;
static rw_spin_lock_t irqs_lock;
bool irq_attach (void (*func) (void*, void*), void* arg, uint32_t irq_num, uint32_t flags) {
struct irq* irq = malloc (sizeof (*irq));
@@ -25,9 +25,9 @@ bool irq_attach (void (*func) (void*, void*), void* arg, uint32_t irq_num, uint3
irq->irq_num = irq_num;
irq->flags = flags;
spin_lock (&irqs_lock);
rw_spin_write_lock (&irqs_lock);
list_append (irqs, &irq->irqs_link);
spin_unlock (&irqs_lock);
rw_spin_write_unlock (&irqs_lock);
#if defined(__x86_64__)
uint8_t resolution = amd64_resolve_irq (irq_num);
@@ -39,32 +39,40 @@ bool irq_attach (void (*func) (void*, void*), void* arg, uint32_t irq_num, uint3
void irq_detach (void (*func) (void*, void*)) {
struct list_node_link *irq_link, *irq_link_tmp;
spin_lock (&irqs_lock);
struct irq* irq = NULL;
rw_spin_read_lock (&irqs_lock);
list_foreach (irqs, irq_link, irq_link_tmp) {
struct irq* irq = list_entry (irq_link, struct irq, irqs_link);
irq = list_entry (irq_link, struct irq, irqs_link);
if ((uintptr_t)irq->func == (uintptr_t)func)
list_remove (irqs, irq_link);
break;
}
spin_unlock (&irqs_lock);
rw_spin_read_unlock (&irqs_lock);
if (irq != NULL) {
rw_spin_write_lock (&irqs_lock);
list_remove (irqs, &irq->irqs_link);
rw_spin_write_unlock (&irqs_lock);
}
}
struct irq* irq_find (uint32_t irq_num) {
struct list_node_link *irq_link, *irq_link_tmp;
spin_lock (&irqs_lock);
rw_spin_read_lock (&irqs_lock);
list_foreach (irqs, irq_link, irq_link_tmp) {
struct irq* irq = list_entry (irq_link, struct irq, irqs_link);
if (irq->irq_num == irq_num) {
spin_unlock (&irqs_lock);
rw_spin_read_unlock (&irqs_lock);
return irq;
}
}
spin_unlock (&irqs_lock);
rw_spin_read_unlock (&irqs_lock);
return NULL;
}