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mcctrl+mcexec: fix per-proc data allocation for fork()

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This commit is contained in:
Balazs Gerofi
2016-09-02 15:04:35 +09:00
parent d550bced78
commit bfbc94dfb0
4 changed files with 61 additions and 56 deletions
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32
executer/kernel/mcctrl/syscall.c
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@@ -1566,36 +1566,18 @@ int __do_in_kernel_syscall(ihk_os_t os, struct ikc_scd_packet *packet)
/* Set new remote page table if not zero */
if (sc->args[2]) {
struct mcctrl_per_proc_data *ppd = NULL;
int i;
ppd = kmalloc(sizeof(*ppd), GFP_ATOMIC);
if (!ppd) {
printk("ERROR: allocating per process data\n");
error = -ENOMEM;
goto out;
ppd = mcctrl_get_per_proc_data(usrdata, sc->args[3]);
if (unlikely(!ppd)) {
kprintf("%s: ERROR: no per-process structure for PID %d??\n",
__FUNCTION__, task_tgid_vnr(current));
return -1;
}
ppd->pid = task_tgid_vnr(current);
ppd->rpgtable = sc->args[2];
INIT_LIST_HEAD(&ppd->wq_list);
INIT_LIST_HEAD(&ppd->wq_req_list);
INIT_LIST_HEAD(&ppd->wq_list_exact);
spin_lock_init(&ppd->wq_list_lock);
for (i = 0; i < MCCTRL_PER_THREAD_DATA_HASH_SIZE; ++i) {
INIT_LIST_HEAD(&ppd->per_thread_data_hash[i]);
rwlock_init(&ppd->per_thread_data_hash_lock[i]);
}
if (mcctrl_add_per_proc_data(usrdata, ppd->pid, ppd) < 0) {
printk("%s: error adding per process data\n", __FUNCTION__);
error = -EBUSY;
kfree(ppd);
goto out;
}
dprintk("pid: %d, rpgtable: 0x%lx added\n",
ppd->pid, ppd->rpgtable);
dprintk("%s: pid: %d, rpgtable: 0x%lx updated\n",
__FUNCTION__, ppd->pid, ppd->rpgtable);
}
ret = clear_pte_range(sc->args[0], sc->args[1]);