kamkow1/mop3
1
1
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Per-cpu kernel pseudo process

Browse Source
This commit is contained in:
Kamil Kowalczyk
2026-03-11 17:47:12 +01:00
parent f1268ec1ba
commit e765855309
10 changed files with 89 additions and 33 deletions
Download Patch File Download Diff File Expand all files Collapse all files

68
kernel/proc/proc.c
View File

@@ -43,6 +43,27 @@ void proc_free_pid (int pid) { id_free (&pid_alloc, pid); }
void proc_pid_alloc_init (void) { id_alloc_init (&pid_alloc, PIDS_MAX); }
struct proc* kproc_create (void) {
struct proc* kproc = malloc (sizeof (*kproc));
memset (kproc, 0, sizeof (*kproc));
kproc->lock = SPIN_LOCK_INIT;
kproc->flags |= PROC_KPROC;
kproc->pid = proc_alloc_pid ();
kproc->procgroup = procgroup_create ();
procgroup_attach (kproc->procgroup, kproc);
kproc->exec_pid = -1;
struct reschedule_ctx rctx;
memset (&rctx, 0, sizeof (rctx));
proc_register (kproc, NULL, &rctx);
return kproc;
}
static bool proc_check_elf (uint8_t* elf) {
if (!((elf[0] == 0x7F) && (elf[1] == 'E') && (elf[2] == 'L') && (elf[3] == 'F')))
return false;
@@ -116,16 +137,35 @@ struct proc* proc_from_file (struct proc* proc1, const char* volume, const char*
struct desc desc;
int ret;
for (;;) {
ret = vfs_volume_open (proc1, volume, rctx);
spin_lock (&proc1->lock);
bool is_kproc = (proc1->flags & PROC_KPROC) != 0;
spin_unlock (&proc1->lock);
if (ret < 0) {
if (ret == -ST_TRY_AGAIN)
continue;
else
if (is_kproc) {
for (;;) {
ret = vfs_volume_open (proc1, volume, rctx);
if (ret < 0)
return NULL;
} else
break;
spin_lock (&proc1->lock);
if (ret == ST_OK && proc1->state != PROC_SUSPENDED) {
spin_unlock (&proc1->lock);
break;
}
for (;;) {
spin_lock (&proc1->lock);
if (proc1->state != PROC_SUSPENDED) {
spin_unlock (&proc1->lock);
break;
}
spin_unlock (&proc1->lock);
}
}
}
if ((ret = vfs_describe (proc1, volume, path, &desc)) < 0) {
@@ -221,7 +261,7 @@ static struct proc* proc_find_sched (struct cpu* cpu) {
int state = proc->state;
if (state == PROC_READY) {
if (state == PROC_READY && !(proc->flags & PROC_KPROC)) {
spin_unlock (&proc->lock);
return proc;
}
@@ -256,6 +296,12 @@ void proc_sched (void) {
void proc_kill (struct proc* proc, struct reschedule_ctx* rctx) {
spin_lock (&proc->lock);
if ((proc->flags & PROC_KPROC)) {
spin_unlock (&proc->lock);
return;
}
struct cpu* cpu = proc->cpu;
spin_unlock (&proc->lock);
@@ -313,10 +359,10 @@ void proc_init (void) {
struct reschedule_ctx rctx;
memset (&rctx, 0, sizeof (rctx));
struct proc* spin_proc = proc_from_file (VFS_KERNEL, "RD", "/spin", &rctx);
struct proc* spin_proc = proc_from_file (thiscpu->kproc, "RD", "/spin", &rctx);
proc_register (spin_proc, thiscpu, &rctx);
struct proc* init = proc_from_file (VFS_KERNEL, "RD", "/init", &rctx);
struct proc* init = proc_from_file (thiscpu->kproc, "RD", "/init", &rctx);
init->procgroup->capabilities |= (PROC_CAP_TERMINAL | PROC_CAP_KB);
proc_register (init, thiscpu, &rctx);