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introduction of mcctrl_per_process data to keep track remote page tables on a per-process basis

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This commit is contained in:
Balazs Gerofi bgerofi@riken.jp
2014-05-13 00:22:29 +09:00
parent a5b8d388e9
commit 426c67861c
4 changed files with 76 additions and 6 deletions
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20
executer/kernel/control.c
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@@ -53,6 +53,8 @@ static long mcexec_prepare_image(ihk_os_t os,
void *args, *envs;
long ret = 0;
struct mcctrl_usrdata *usrdata = ihk_host_os_get_usrdata(os);
unsigned long flags;
struct mcctrl_per_proc_data *ppd = NULL;
if (copy_from_user(&desc, udesc,
sizeof(struct program_load_desc))) {
@@ -117,7 +119,23 @@ static long mcexec_prepare_image(ihk_os_t os,
goto free_out;
}
usrdata->rpgtable = pdesc->rpgtable;
ppd = kmalloc(sizeof(*ppd), GFP_ATOMIC);
if (!ppd) {
printk("ERROR: allocating per process data\n");
ret = -ENOMEM;
goto free_out;
}
ppd->pid = pdesc->pid;
ppd->rpgtable = pdesc->rpgtable;
flags = ihk_ikc_spinlock_lock(&usrdata->per_proc_list_lock);
list_add_tail(&ppd->list, &usrdata->per_proc_list);
ihk_ikc_spinlock_unlock(&usrdata->per_proc_list_lock, flags);
printk("pid %d, rpgtable: 0x%lx added\n",
ppd->pid, ppd->rpgtable);
if (copy_to_user(udesc, pdesc, sizeof(struct program_load_desc) +
sizeof(struct program_image_section) * desc.num_sections)) {
ret = -EFAULT;