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clean up per process structure in exit_group() and fix wait4() on self bug

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bgerofi@riken.jp
2014-05-19 11:23:55 +09:00
committed by Balazs Gerofi bgerofi@riken.jp
parent 3e830521c1
commit 81a78be20a
3 changed files with 53 additions and 1 deletions
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34
executer/kernel/syscall.c
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@ -1202,6 +1202,40 @@ int __do_in_kernel_syscall(ihk_os_t os, struct mcctrl_channel *c, struct syscall
ret = remap_user_space(sc->args[0], sc->args[1], sc->args[2]);
break;
case __NR_exit_group: {
unsigned long flags;
struct mcctrl_per_proc_data *ppd = NULL, *ppd_iter;
ppd = NULL;
flags = ihk_ikc_spinlock_lock(&usrdata->per_proc_list_lock);
list_for_each_entry(ppd_iter, &usrdata->per_proc_list, list) {
if (ppd_iter->pid == current->tgid) {
ppd = ppd_iter;
break;
}
}
if (ppd) {
list_del(&ppd->list);
printk("pid: %d, tid: %d: rpgtable for %d (0x%lx) removed\n",
current->tgid, current->pid, ppd->pid, ppd->rpgtable);
kfree(ppd);
}
else {
printk("WARNING: no per process data for pid %d ?\n",
current->tgid);
}
ihk_ikc_spinlock_unlock(&usrdata->per_proc_list_lock, flags);
/* Make sure the user space handler will be called as well */
error = -ENOSYS;
goto out;
}
default:
error = -ENOSYS;
goto out;