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futex and rlimit

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This commit is contained in:
Balazs Gerofi
2012-05-08 18:32:43 +09:00
parent c3463e7393
commit a7c0225423
17 changed files with 1534 additions and 65 deletions
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45
kernel/process.c
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@@ -19,22 +19,30 @@ extern long do_arch_prctl(unsigned long code, unsigned long address);
void init_process_vm(struct process_vm *vm)
{
int i;
aal_atomic_set(&vm->refcount, 1);
INIT_LIST_HEAD(&vm->vm_range_list);
vm->page_table = aal_mc_pt_create();
vm->region.tlsblock_base = 0;
/* Initialize futex queues */
for (i = 0; i < (1 << FUTEX_HASHBITS); ++i)
futex_queue_init(&vm->futex_queues[i]);
}
struct process *create_process(unsigned long user_pc)
{
struct process *proc;
proc = aal_mc_alloc_pages(1, 0);
proc = aal_mc_alloc_pages(3, 0);
if (!proc)
return NULL;
memset(proc, 0, sizeof(struct process));
aal_mc_init_user_process(&proc->ctx, &proc->uctx,
((char *)proc) + PAGE_SIZE, user_pc, 0);
((char *)proc) + 3 * PAGE_SIZE, user_pc, 0);
proc->vm = (struct process_vm *)(proc + 1);
@@ -50,7 +58,7 @@ struct process *clone_process(struct process *org, unsigned long pc,
proc = aal_mc_alloc_pages(1, 0);
memset(proc, 0, sizeof(struct process));
memset(proc, 0, sizeof(*proc));
aal_mc_init_user_process(&proc->ctx, &proc->uctx,
((char *)proc) + PAGE_SIZE, pc, sp);
@@ -101,9 +109,9 @@ int add_process_memory_range(struct process *process,
range->phys = phys;
range->flag = flag;
dkprintf("range: %lx - %lx => %lx - %lx\n",
dkprintf("range: 0x%lX - 0x%lX => 0x%lX - 0x%lX (%ld)\n",
range->start, range->end, range->phys, range->phys +
range->end - range->start);
range->end - range->start, range->end - range->start);
if (flag & VR_REMOTE) {
update_process_page_table(process, range, AAL_PTA_REMOTE);
@@ -122,14 +130,17 @@ int add_process_memory_range(struct process *process,
return 0;
}
#define NR_STACK_PAGES 2
void init_process_stack(struct process *process)
{
char *stack = aal_mc_alloc_pages(1, 0);
unsigned long *p = (unsigned long *)(stack + PAGE_SIZE);
char *stack = aal_mc_alloc_pages(NR_STACK_PAGES, 0);
unsigned long *p = (unsigned long *)(stack + (NR_STACK_PAGES * PAGE_SIZE));
memset(stack, 0, PAGE_SIZE);
memset(stack, 0, NR_STACK_PAGES * PAGE_SIZE);
add_process_memory_range(process, USER_END - PAGE_SIZE,
add_process_memory_range(process, USER_END - (NR_STACK_PAGES * PAGE_SIZE),
USER_END,
virt_to_phys(stack), VR_STACK);
@@ -147,7 +158,7 @@ void init_process_stack(struct process *process)
aal_mc_modify_user_context(process->uctx, AAL_UCR_STACK_POINTER,
USER_END - sizeof(unsigned long) * 9);
process->vm->region.stack_end = USER_END;
process->vm->region.stack_start = USER_END - PAGE_SIZE;
process->vm->region.stack_start = USER_END - (NR_STACK_PAGES * PAGE_SIZE);
}
@@ -231,11 +242,11 @@ static void idle(void)
{
//unsigned int flags;
//flags = aal_mc_spinlock_lock(&cpu_status_lock);
cpu_local_var(status) = CPU_STATUS_IDLE;
//aal_mc_spinlock_unlock(&cpu_status_lock, flags);
while (1) {
cpu_enable_interrupt();
schedule();
cpu_local_var(status) = CPU_STATUS_IDLE;
cpu_halt();
}
}
@@ -307,8 +318,13 @@ void schedule(void)
prev ? prev->pid : 0, next ? next->pid : 0);
aal_mc_load_page_table(next->vm->page_table);
do_arch_prctl(ARCH_SET_FS, next->vm->region.tlsblock_base);
cpu_local_var(status) = CPU_STATUS_RUNNING;
kprintf("[%d] schedule: tlsblock_base: 0x%lX\n",
aal_mc_get_processor_id(), next->thread.tlsblock_base);
do_arch_prctl(ARCH_SET_FS, next->thread.tlsblock_base);
if (next != &cpu_local_var(idle))
cpu_local_var(status) = CPU_STATUS_RUNNING;
if (prev) {
aal_mc_switch_context(&prev->ctx, &next->ctx);
@@ -355,6 +371,7 @@ void __runq_add_proc(struct process *proc, int cpu_id)
++v->runq_len;
proc->cpu_id = cpu_id;
proc->status = PS_RUNNING;
get_cpu_local_var(cpu_id)->status = CPU_STATUS_RUNNING;
dkprintf("runq_add_proc(): pid %d added to CPU[%d]'s runq\n",
proc->pid, cpu_id);