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Implement lock IRQ nesting via stack variables/contexts
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This commit is contained in:
Kamil Kowalczyk
2026-01-14 22:11:56 +01:00
parent 55166f9d5f
commit 270ff507d4
22 changed files with 197 additions and 145 deletions
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11
kernel/proc/resource.c
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@@ -28,12 +28,14 @@ void proc_cleanup_resources (struct proc* proc) {
}
void proc_drop_resource (struct proc* proc, struct proc_resource* resource) {
spin_lock_ctx_t ctxpr;
DEBUG ("resource=%p, type=%d, rid=%d\n", resource, resource->type, resource->rid);
if (atomic_fetch_sub (&resource->refs, 1) == 1) {
spin_lock (&proc->lock);
spin_lock (&proc->lock, &ctxpr);
rbtree_delete (&proc->resource_tree, &resource->proc_resource_tree_link);
spin_unlock (&proc->lock);
spin_unlock (&proc->lock, &ctxpr);
resource->ops.cleanup (proc, resource);
free (resource);
@@ -74,6 +76,7 @@ static void proc_cleanup_resource_mutex (struct proc* proc, struct proc_resource
struct proc_resource* proc_create_resource (struct proc* proc, int rid, int type, int vis,
void* data) {
spin_lock_ctx_t ctxpr;
/* Check if resource RID already exists */
struct proc_resource* resource_check;
rbtree_find (struct proc_resource, &proc->resource_tree, rid, resource_check,
@@ -112,10 +115,10 @@ struct proc_resource* proc_create_resource (struct proc* proc, int rid, int type
} break;
}
spin_lock (&proc->lock);
spin_lock (&proc->lock, &ctxpr);
rbtree_insert (struct proc_resource, &proc->resource_tree, &resource->proc_resource_tree_link,
proc_resource_tree_link, rid);
spin_unlock (&proc->lock);
spin_unlock (&proc->lock, &ctxpr);
return resource;
}