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user/kernel stack size, clear content of ANONYMOUS mmap, changes to scheduler (CPU idle state)

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This commit is contained in:
Balazs Gerofi
2012-05-10 14:20:52 +09:00
parent d679844685
commit 97d4c85195
3 changed files with 72 additions and 83 deletions
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69
kernel/syscall.c
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@@ -30,8 +30,6 @@
#define dkprintf(...)
#endif
static aal_spinlock_t sysc_lock = { 0 };
static aal_atomic_t pid_cnt = AAL_ATOMIC_INIT(1024);
int memcpy_async(unsigned long dest, unsigned long src,
@@ -295,7 +293,7 @@ SYSCALL_DECLARE(mmap)
unsigned long address, ret;
struct vm_regions *region = &cpu_local_var(current)->vm->region;
/* anonymous */
/* MAP_ANONYMOUS */
if (aal_mc_syscall_arg3(ctx) & 0x22) {
ret = region->map_end;
address = region->map_end + aal_mc_syscall_arg1(ctx);
@@ -415,49 +413,6 @@ SYSCALL_DECLARE(arch_prctl)
aal_mc_syscall_arg1(ctx));
}
#if 0
long sys_arch_prctl(int n, aal_mc_user_context_t *ctx)
{
unsigned long code = aal_mc_syscall_arg0(ctx);
unsigned long address = aal_mc_syscall_arg1(ctx);
switch (code) {
case 0x1002:
return aal_mc_arch_set_special_register(AAL_ASR_X86_FS,
address);
case 0x1003:
return aal_mc_arch_get_special_register(AAL_ASR_X86_FS,
(unsigned long *)
address);
}
return -EINVAL;
}
SYSCALL_DECLARE(clone)
{
/* Clone a new thread */
struct process *new;
struct syscall_request request AAL_DMA_ALIGN;
new = clone_process(cpu_local_var(current), aal_mc_syscall_pc(ctx),
aal_mc_syscall_arg1(ctx));
/* XXX Assign new pid! */
new->pid = cpu_local_var(current)->pid;
dkprintf("Cloned: %p \n", new);
aal_mc_syscall_ret(new->uctx) = 0;
/* Hope it is scheduled after... :) */
request.number = n;
request.args[0] = (unsigned long)new;
/* Sync */
do_syscall(&request, ctx);
dkprintf("Clone ret.\n");
return new->pid;
}
#endif
SYSCALL_DECLARE(clone)
{
@@ -519,15 +474,21 @@ SYSCALL_DECLARE(clone)
}
aal_mc_syscall_ret(new->uctx) = 0;
runq_add_proc(new, cpuid);
//get_cpu_local_var(cpuid)->next = new;
//aal_mc_spinlock_unlock(&cpu_status_lock, flags);
dkprintf("clone: kicking scheduler!\n");
aal_mc_interrupt_cpu(get_x86_cpu_local_variable(cpuid)->apic_id, 0xd1);
runq_add_proc(new, cpuid);
//while (1) { cpu_halt(); }
#if 0
aal_mc_syscall_ret(new->uctx) = 0;
/* Hope it is scheduled after... :) */
request.number = n;
request.args[0] = (unsigned long)new;
/* Sync */
do_syscall(&request, ctx);
dkprintf("Clone ret.\n");
#endif
return new->pid;
}
@@ -653,8 +614,8 @@ SYSCALL_DECLARE(getrlimit)
case RLIMIT_STACK:
dkprintf("[%d] getrlimit() RLIMIT_STACK\n", aal_mc_get_processor_id());
rlm->rlim_cur = (1024*1024);
rlm->rlim_max = (16384*1024);
rlm->rlim_cur = (128*4096); /* Linux provides 8MB */
rlm->rlim_max = (1024*1024*1024);
ret = 0;
break;