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Implement userspace TLS, remove RW Locks

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This commit is contained in:
Kamil Kowalczyk
2026-01-28 23:52:48 +01:00
parent a3b62ebd3d
commit 3d23187acf
17 changed files with 135 additions and 157 deletions
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15
kernel/proc/procgroup.c
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@@ -4,13 +4,12 @@
#include <mm/pmm.h>
#include <proc/proc.h>
#include <proc/procgroup.h>
#include <sync/rw_spin_lock.h>
#include <sync/spin_lock.h>
#include <sys/debug.h>
#include <sys/mm.h>
static struct rb_node_link* procgroup_tree = NULL;
static rw_spin_lock_t procgroup_tree_lock = RW_SPIN_LOCK_INIT;
static spin_lock_t procgroup_tree_lock = SPIN_LOCK_INIT;
static atomic_int pgids = 0;
uintptr_t procgroup_map (struct procgroup* procgroup, uintptr_t vaddr, size_t pages, uint32_t flags,
@@ -143,10 +142,10 @@ struct procgroup* procgroup_create (void) {
procgroup->pd.cr3_paddr = mm_alloc_user_pd_phys ();
procgroup->map_base = PROC_MAP_BASE;
rw_spin_write_lock (&procgroup_tree_lock, &ctxpgtr);
spin_lock (&procgroup_tree_lock, &ctxpgtr);
rbtree_insert (struct procgroup, &procgroup_tree, &procgroup->procgroup_tree_link,
procgroup_tree_link, pgid);
rw_spin_write_unlock (&procgroup_tree_lock, &ctxpgtr);
spin_unlock (&procgroup_tree_lock, &ctxpgtr);
return procgroup;
}
@@ -160,7 +159,6 @@ void procgroup_attach (struct procgroup* procgroup, struct proc* proc) {
rbtree_insert (struct proc, &procgroup->memb_proc_tree, &proc->procgroup_memb_tree_link,
procgroup_memb_tree_link, pid);
atomic_fetch_add (&procgroup->refs, 1);
DEBUG ("procgrpup attach PID %d to PGID %d\n", proc->pid, procgroup->pgid);
spin_unlock (&proc->lock, &ctxpr);
spin_unlock (&procgroup->lock, &ctxpg);
@@ -174,19 +172,18 @@ void procgroup_detach (struct procgroup* procgroup, struct proc* proc) {
rbtree_delete (&procgroup->memb_proc_tree, &proc->procgroup_memb_tree_link);
int refs = atomic_fetch_sub (&procgroup->refs, 1);
DEBUG ("procgrpup detach PID %d to PGID %d\n", proc->pid, procgroup->pgid);
spin_unlock (&proc->lock, &ctxpr);
spin_unlock (&procgroup->lock, &ctxpg);
if (refs == 1) {
rw_spin_write_lock (&procgroup_tree_lock, &ctxpgtr);
spin_lock (&procgroup_tree_lock, &ctxpgtr);
spin_lock (&procgroup->lock, &ctxpg);
rbtree_delete (&procgroup_tree, &procgroup->procgroup_tree_link);
spin_unlock (&procgroup->lock, &ctxpg);
rw_spin_write_unlock (&procgroup_tree_lock, &ctxpgtr);
spin_unlock (&procgroup_tree_lock, &ctxpgtr);
/* delete resources */
struct rb_node_link* rnode;
@@ -214,6 +211,8 @@ void procgroup_detach (struct procgroup* procgroup, struct proc* proc) {
pmm_free (procgroup->pd.cr3_paddr, 1);
free (procgroup->tls.tls_tmpl);
free (procgroup);
}
}