Lines Matching +full:x +full:- +full:rc
1 // SPDX-License-Identifier: GPL-2.0-or-later
17 #define pr_fmt(fmt) "pseries-hotplug-cpu: " fmt
86 vdso_data->processorCount--; in pseries_cpu_disable()
108 * the cpu-offline. Here we wait for long enough to allow the cpu in question
109 * to self-destroy so that the cpu-offline thread can send the CPU_DEAD
113 * self-destruct.
141 paca_ptrs[cpu]->cpu_start = 0; in pseries_cpu_die()
145 * find_cpu_id_range - found a linear ranger of @nthreads free CPU ids.
158 int rc = -ENOSPC; in find_cpu_id_range() local
161 return -ENOMEM; in find_cpu_id_range()
197 rc = 0; in find_cpu_id_range()
201 return rc; in find_cpu_id_range()
208 * the logical ids for sibling SMT threads x and y are adjacent, such
209 * that x^1 == y and y^1 == x.
214 int rc = 0; in pseries_add_processor() local
218 intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len); in pseries_add_processor()
225 return -ENOMEM; in pseries_add_processor()
240 rc = find_cpu_id_range(nthreads, node, &cpu_mask); in pseries_add_processor()
241 if (rc && nr_node_ids > 1) { in pseries_add_processor()
246 rc = find_cpu_id_range(nthreads, NUMA_NO_NODE, &cpu_mask); in pseries_add_processor()
249 if (rc) { in pseries_add_processor()
271 pr_warn("Reusing free CPU ids %d-%d from another node\n", in pseries_add_processor()
272 cpu, cpu + nthreads - 1); in pseries_add_processor()
285 return rc; in pseries_add_processor()
290 * the hard id in the paca(s) to -1 to be consistent with boot time
291 * convention for non-present cpus.
300 intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len); in pseries_remove_processor()
314 set_hard_smp_processor_id(cpu, -1); in pseries_remove_processor()
315 update_numa_cpu_lookup_table(cpu, -1); in pseries_remove_processor()
320 "with physical id 0x%x\n", thread); in pseries_remove_processor()
327 int rc = 0; in dlpar_offline_cpu() local
333 intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); in dlpar_offline_cpu()
335 return -EINVAL; in dlpar_offline_cpu()
350 * device_offline() will return -EBUSY (via cpu_down()) if there in dlpar_offline_cpu()
358 rc = -EBUSY; in dlpar_offline_cpu()
363 rc = device_offline(get_cpu_device(cpu)); in dlpar_offline_cpu()
364 if (rc) in dlpar_offline_cpu()
370 pr_warn("Could not find cpu to offline with physical id 0x%x\n", in dlpar_offline_cpu()
378 return rc; in dlpar_offline_cpu()
383 int rc = 0; in dlpar_online_cpu() local
389 intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); in dlpar_online_cpu()
391 return -EINVAL; in dlpar_online_cpu()
411 rc = device_online(get_cpu_device(cpu)); in dlpar_online_cpu()
412 if (rc) { in dlpar_online_cpu()
422 "with physical id 0x%x\n", thread); in dlpar_online_cpu()
427 return rc; in dlpar_online_cpu()
436 int rc; in dlpar_cpu_exists() local
442 rc = of_property_read_u32(child, "ibm,my-drc-index", in dlpar_cpu_exists()
444 if (rc) in dlpar_cpu_exists()
465 info = of_find_property(parent, "ibm,drc-info", NULL); in drc_info_valid_index()
471 /* First value of ibm,drc-info is number of drc-info records */ in drc_info_valid_index()
502 int rc, index; in valid_cpu_drc_index() local
504 if (of_property_present(parent, "ibm,drc-info")) in valid_cpu_drc_index()
507 /* Note that the format of the ibm,drc-indexes array is in valid_cpu_drc_index()
515 rc = of_property_read_u32_index(parent, "ibm,drc-indexes", in valid_cpu_drc_index()
518 if (rc) in valid_cpu_drc_index()
534 * This device node is unattached but may have siblings; open-code the in pseries_cpuhp_attach_nodes()
537 for (of_changeset_init(&cs); dn != NULL; dn = dn->sibling) { in pseries_cpuhp_attach_nodes()
552 int rc, saved_rc; in dlpar_cpu_add() local
554 pr_debug("Attempting to add CPU, drc index: %x\n", drc_index); in dlpar_cpu_add()
559 return -ENODEV; in dlpar_cpu_add()
564 pr_warn("CPU with drc index %x already exists\n", drc_index); in dlpar_cpu_add()
565 return -EINVAL; in dlpar_cpu_add()
570 pr_warn("Cannot find CPU (drc index %x) to add.\n", drc_index); in dlpar_cpu_add()
571 return -EINVAL; in dlpar_cpu_add()
574 rc = dlpar_acquire_drc(drc_index); in dlpar_cpu_add()
575 if (rc) { in dlpar_cpu_add()
576 pr_warn("Failed to acquire DRC, rc: %d, drc index: %x\n", in dlpar_cpu_add()
577 rc, drc_index); in dlpar_cpu_add()
579 return -EINVAL; in dlpar_cpu_add()
584 pr_warn("Failed call to configure-connector, drc index: %x\n", in dlpar_cpu_add()
588 return -EINVAL; in dlpar_cpu_add()
591 rc = pseries_cpuhp_attach_nodes(dn); in dlpar_cpu_add()
596 if (rc) { in dlpar_cpu_add()
597 saved_rc = rc; in dlpar_cpu_add()
598 pr_warn("Failed to attach node %pOFn, rc: %d, drc index: %x\n", in dlpar_cpu_add()
599 dn, rc, drc_index); in dlpar_cpu_add()
601 rc = dlpar_release_drc(drc_index); in dlpar_cpu_add()
602 if (!rc) in dlpar_cpu_add()
610 rc = dlpar_online_cpu(dn); in dlpar_cpu_add()
611 if (rc) { in dlpar_cpu_add()
612 saved_rc = rc; in dlpar_cpu_add()
613 pr_warn("Failed to online cpu %pOFn, rc: %d, drc index: %x\n", in dlpar_cpu_add()
614 dn, rc, drc_index); in dlpar_cpu_add()
616 rc = dlpar_detach_node(dn); in dlpar_cpu_add()
617 if (!rc) in dlpar_cpu_add()
623 pr_debug("Successfully added CPU %pOFn, drc index: %x\n", dn, in dlpar_cpu_add()
625 return rc; in dlpar_cpu_add()
684 int rc; in dlpar_cpu_remove() local
686 pr_debug("Attempting to remove CPU %pOFn, drc index: %x\n", in dlpar_cpu_remove()
689 rc = dlpar_offline_cpu(dn); in dlpar_cpu_remove()
690 if (rc) { in dlpar_cpu_remove()
691 pr_warn("Failed to offline CPU %pOFn, rc: %d\n", dn, rc); in dlpar_cpu_remove()
692 return -EINVAL; in dlpar_cpu_remove()
695 rc = dlpar_release_drc(drc_index); in dlpar_cpu_remove()
696 if (rc) { in dlpar_cpu_remove()
697 pr_warn("Failed to release drc (%x) for CPU %pOFn, rc: %d\n", in dlpar_cpu_remove()
698 drc_index, dn, rc); in dlpar_cpu_remove()
700 return rc; in dlpar_cpu_remove()
703 rc = pseries_cpuhp_detach_nodes(dn); in dlpar_cpu_remove()
704 if (rc) { in dlpar_cpu_remove()
705 int saved_rc = rc; in dlpar_cpu_remove()
707 pr_warn("Failed to detach CPU %pOFn, rc: %d", dn, rc); in dlpar_cpu_remove()
709 rc = dlpar_acquire_drc(drc_index); in dlpar_cpu_remove()
710 if (!rc) in dlpar_cpu_remove()
716 pr_debug("Successfully removed CPU, drc index: %x\n", drc_index); in dlpar_cpu_remove()
724 int rc; in cpu_drc_index_to_dn() local
727 rc = of_property_read_u32(dn, "ibm,my-drc-index", &my_index); in cpu_drc_index_to_dn()
728 if (rc) in cpu_drc_index_to_dn()
741 int rc; in dlpar_cpu_remove_by_index() local
745 pr_warn("Cannot find CPU (drc index %x) to remove\n", in dlpar_cpu_remove_by_index()
747 return -ENODEV; in dlpar_cpu_remove_by_index()
750 rc = dlpar_cpu_remove(dn, drc_index); in dlpar_cpu_remove_by_index()
752 return rc; in dlpar_cpu_remove_by_index()
758 int rc; in dlpar_cpu() local
760 drc_index = hp_elog->_drc_u.drc_index; in dlpar_cpu()
764 switch (hp_elog->action) { in dlpar_cpu()
766 if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) { in dlpar_cpu()
767 rc = dlpar_cpu_remove_by_index(drc_index); in dlpar_cpu()
770 * device to UNISOLATE is a no-op, but the hypervisor can in dlpar_cpu()
773 if (rc) in dlpar_cpu()
777 rc = -EINVAL; in dlpar_cpu()
780 if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) in dlpar_cpu()
781 rc = dlpar_cpu_add(drc_index); in dlpar_cpu()
783 rc = -EINVAL; in dlpar_cpu()
786 pr_err("Invalid action (%d) specified\n", hp_elog->action); in dlpar_cpu()
787 rc = -EINVAL; in dlpar_cpu()
792 return rc; in dlpar_cpu()
800 int rc; in dlpar_cpu_probe() local
802 rc = kstrtou32(buf, 0, &drc_index); in dlpar_cpu_probe()
803 if (rc) in dlpar_cpu_probe()
804 return -EINVAL; in dlpar_cpu_probe()
806 rc = dlpar_cpu_add(drc_index); in dlpar_cpu_probe()
808 return rc ? rc : count; in dlpar_cpu_probe()
815 int rc; in dlpar_cpu_release() local
819 return -EINVAL; in dlpar_cpu_release()
821 rc = of_property_read_u32(dn, "ibm,my-drc-index", &drc_index); in dlpar_cpu_release()
822 if (rc) { in dlpar_cpu_release()
824 return -EINVAL; in dlpar_cpu_release()
827 rc = dlpar_cpu_remove(dn, drc_index); in dlpar_cpu_release()
830 return rc ? rc : count; in dlpar_cpu_release()
843 err = pseries_add_processor(rd->dn); in pseries_smp_notifier()
846 pseries_remove_processor(rd->dn); in pseries_smp_notifier()
866 "- disabling.\n"); in pseries_cpu_hotplug_init()
870 smp_ops->cpu_offline_self = pseries_cpu_offline_self; in pseries_cpu_hotplug_init()
871 smp_ops->cpu_disable = pseries_cpu_disable; in pseries_cpu_hotplug_init()
872 smp_ops->cpu_die = pseries_cpu_die; in pseries_cpu_hotplug_init()
889 return -ENOMEM; in pseries_dlpar_init()