static int
copy_fs(uint32_t clone_flags, struct proc_struct *proc) {
struct fs_struct *fs_struct, *old_fs_struct = current->fs_struct;
assert(old_fs_struct != NULL);
if (clone_flags & CLONE_FS) {
fs_struct = old_fs_struct;
goto good_fs_struct;
}
int ret = -E_NO_MEM;
if ((fs_struct = fs_create()) == NULL) {
goto bad_fs_struct;
}
if ((ret = dup_fs(fs_struct, old_fs_struct)) != 0) {
goto bad_dup_cleanup_fs;
}
good_fs_struct:
fs_count_inc(fs_struct);
proc->fs_struct = fs_struct;
return 0;
bad_dup_cleanup_fs:
fs_destroy(fs_struct);
bad_fs_struct:
return ret;
}
void
proc_init_ap(void)
{
int lcpu_idx = pls_read(lcpu_idx);
int lapic_id = pls_read(lapic_id);
pls_write(idleproc, alloc_proc());
if (idleproc == NULL) {
panic("cannot alloc idleproc.\n");
}
idleproc->pid = lcpu_idx;
idleproc->state = PROC_RUNNABLE;
// XXX
// idleproc->kstack = (uintptr_t)bootstack;
idleproc->need_resched = 1;
idleproc->tf = NULL;
if ((idleproc->fs_struct = fs_create()) == NULL) {
panic("create fs_struct (idleproc) failed.\n");
}
fs_count_inc(idleproc->fs_struct);
char namebuf[32];
snprintf(namebuf, 32, "idle/%d", lapic_id);
set_proc_name(idleproc, namebuf);
nr_process ++;
pls_write(current, idleproc);
assert(idleproc != NULL && idleproc->pid == lcpu_idx);
}
void proc_init_ap(void)
{
int cpuid = myid();
struct proc_struct *idle;
idle = alloc_proc();
if (idle == NULL) {
panic("cannot alloc idleproc.\n");
}
idle->pid = cpuid;
idle->state = PROC_RUNNABLE;
// XXX
// idle->kstack = (uintptr_t)bootstack;
idle->need_resched = 1;
idle->tf = NULL;
if ((idle->fs_struct = fs_create()) == NULL) {
panic("create fs_struct (idleproc) failed.\n");
}
fs_count_inc(idle->fs_struct);
char namebuf[32];
snprintf(namebuf, 32, "idle/%d", cpuid);
set_proc_name(idle, namebuf);
nr_process++;
idleproc = idle;
current = idle;
assert(idleproc != NULL && idleproc->pid == cpuid);
}
// proc_init - set up the first kernel thread idleproc "idle" by itself and
// - create the second kernel thread init_main
void proc_init(void)
{
int i;
int cpuid = myid();
struct proc_struct *idle;
spinlock_init(&proc_lock);
list_init(&proc_list);
list_init(&proc_mm_list);
for (i = 0; i < HASH_LIST_SIZE; i++) {
list_init(hash_list + i);
}
idle = alloc_proc();
if (idle == NULL) {
panic("cannot alloc idleproc.\n");
}
idle->pid = cpuid;
idle->state = PROC_RUNNABLE;
// No need to be set for kthread (no privilege switch)
// idleproc->kstack = (uintptr_t)bootstack;
idle->need_resched = 1;
idle->tf = NULL;
if ((idle->fs_struct = fs_create()) == NULL) {
panic("create fs_struct (idleproc) failed.\n");
}
fs_count_inc(idle->fs_struct);
char namebuf[32];
snprintf(namebuf, 32, "idle/%d", cpuid);
set_proc_name(idle, namebuf);
nr_process++;
idleproc = idle;
current = idle;
int pid = ucore_kernel_thread(init_main, NULL, 0);
if (pid <= 0) {
panic("create init_main failed.\n");
}
initproc = find_proc(pid);
set_proc_name(initproc, "kinit");
char *proc_init="Proc init OK";
assert(idleproc != NULL && idleproc->pid == cpuid);
assert(initproc != NULL && initproc->pid == sysconf.lcpu_count);
}
// proc_init - set up the first kernel thread idleproc "idle" by itself and
// - create the second kernel thread init_main
void
proc_init(void) {
int i;
int lcpu_idx = pls_read(lcpu_idx);
int lapic_id = pls_read(lapic_id);
int lcpu_count = pls_read(lcpu_count);
list_init(&proc_list);
list_init(&proc_mm_list);
for (i = 0; i < HASH_LIST_SIZE; i ++) {
list_init(hash_list + i);
}
pls_write(idleproc, alloc_proc());
if (idleproc == NULL) {
panic("cannot alloc idleproc.\n");
}
idleproc->pid = lcpu_idx;
idleproc->state = PROC_RUNNABLE;
// XXX
// idleproc->kstack = (uintptr_t)bootstack;
idleproc->need_resched = 1;
idleproc->tf = NULL;
if ((idleproc->fs_struct = fs_create()) == NULL) {
panic("create fs_struct (idleproc) failed.\n");
}
fs_count_inc(idleproc->fs_struct);
char namebuf[32];
snprintf(namebuf, 32, "idle/%d", lapic_id);
set_proc_name(idleproc, namebuf);
nr_process ++;
pls_write(current, idleproc);
int pid = kernel_thread(init_main, NULL, 0);
if (pid <= 0) {
panic("create init_main failed.\n");
}
initproc = find_proc(pid);
set_proc_name(initproc, "init");
assert(idleproc != NULL && idleproc->pid == lcpu_idx);
assert(initproc != NULL && initproc->pid == lcpu_count);
}
void proc_init_ap(void)
{
int cpuid = myid();
struct proc_struct *idle;
idle = alloc_proc();
if (idle == NULL) {
panic("cannot alloc idleproc.\n");
}
idle->pid = cpuid;
idle->state = PROC_RUNNABLE;
// No need to be set for kthread (no privilege switch)
// idle->kstack = (uintptr_t)bootstack;
idle->need_resched = 1;
idle->tf = NULL;
if ((idle->fs_struct = fs_create()) == NULL) {
panic("create fs_struct (idleproc) failed.\n");
}
fs_count_inc(idle->fs_struct);
char namebuf[32];
snprintf(namebuf, 32, "idle/%d", cpuid);
set_proc_name(idle, namebuf);
nr_process++;
idleproc = idle;
current = idle;
#if 1
int pid;
char proc_name[32];
if((pid = ucore_kernel_thread(krefcache_cleaner, NULL, 0)) <= 0){
panic("krefcache_cleaner init failed.\n");
}
struct proc_struct* cleaner = find_proc(pid);
snprintf(proc_name, 32, "krefcache/%d", myid());
set_proc_name(cleaner, proc_name);
set_proc_cpu_affinity(cleaner, myid());
nr_process++;
#endif
assert(idleproc != NULL && idleproc->pid == cpuid);
}