int ret;
prdtgrp = rdtgroup_kn_lock_live(prgrp_kn);
+ rdt_last_cmd_clear();
if (!prdtgrp) {
ret = -ENODEV;
+ rdt_last_cmd_puts("directory was removed\n");
goto out_unlock;
}
rdtgrp = kzalloc(sizeof(*rdtgrp), GFP_KERNEL);
if (!rdtgrp) {
ret = -ENOSPC;
+ rdt_last_cmd_puts("kernel out of memory\n");
goto out_unlock;
}
*r = rdtgrp;
kn = kernfs_create_dir(parent_kn, name, mode, rdtgrp);
if (IS_ERR(kn)) {
ret = PTR_ERR(kn);
+ rdt_last_cmd_puts("kernfs create error\n");
goto out_free_rgrp;
}
rdtgrp->kn = kn;
kernfs_get(kn);
ret = rdtgroup_kn_set_ugid(kn);
- if (ret)
+ if (ret) {
+ rdt_last_cmd_puts("kernfs perm error\n");
goto out_destroy;
+ }
files = RFTYPE_BASE | RFTYPE_CTRL;
files = RFTYPE_BASE | BIT(RF_CTRLSHIFT + rtype);
ret = rdtgroup_add_files(kn, files);
- if (ret)
+ if (ret) {
+ rdt_last_cmd_puts("kernfs fill error\n");
goto out_destroy;
+ }
if (rdt_mon_capable) {
ret = alloc_rmid();
- if (ret < 0)
+ if (ret < 0) {
+ rdt_last_cmd_puts("out of RMIDs\n");
goto out_destroy;
+ }
rdtgrp->mon.rmid = ret;
ret = mkdir_mondata_all(kn, rdtgrp, &rdtgrp->mon.mon_data_kn);
- if (ret)
+ if (ret) {
+ rdt_last_cmd_puts("kernfs subdir error\n");
goto out_idfree;
+ }
}
kernfs_activate(kn);
kn = rdtgrp->kn;
ret = closid_alloc();
- if (ret < 0)
+ if (ret < 0) {
+ rdt_last_cmd_puts("out of CLOSIDs\n");
goto out_common_fail;
+ }
closid = ret;
rdtgrp->closid = closid;
* of tasks and cpus to monitor.
*/
ret = mongroup_create_dir(kn, NULL, "mon_groups", NULL);
- if (ret)
+ if (ret) {
+ rdt_last_cmd_puts("kernfs subdir error\n");
goto out_id_free;
+ }
}
goto out_unlock;