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
88 systemcfg->processorCount--; in pseries_cpu_disable()
111 * the cpu-offline. Here we wait for long enough to allow the cpu in question
112 * to self-destroy so that the cpu-offline thread can send the CPU_DEAD
116 * self-destruct.
144 paca_ptrs[cpu]->cpu_start = 0; in pseries_cpu_die()
148 * find_cpu_id_range - found a linear ranger of @nthreads free CPU ids.
161 int rc = -ENOSPC; in find_cpu_id_range() local
164 return -ENOMEM; in find_cpu_id_range()
200 rc = 0; in find_cpu_id_range()
204 return rc; in find_cpu_id_range()
211 * the logical ids for sibling SMT threads x and y are adjacent, such
212 * that x^1 == y and y^1 == x.
217 int rc = 0; in pseries_add_processor() local
221 intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len); in pseries_add_processor()
228 return -ENOMEM; in pseries_add_processor()
243 rc = find_cpu_id_range(nthreads, node, &cpu_mask); in pseries_add_processor()
244 if (rc && nr_node_ids > 1) { in pseries_add_processor()
249 rc = find_cpu_id_range(nthreads, NUMA_NO_NODE, &cpu_mask); in pseries_add_processor()
252 if (rc) { in pseries_add_processor()
274 pr_warn("Reusing free CPU ids %d-%d from another node\n", in pseries_add_processor()
275 cpu, cpu + nthreads - 1); in pseries_add_processor()
288 return rc; in pseries_add_processor()
293 * the hard id in the paca(s) to -1 to be consistent with boot time
294 * convention for non-present cpus.
303 intserv = of_get_property(np, "ibm,ppc-interrupt-server#s", &len); in pseries_remove_processor()
317 set_hard_smp_processor_id(cpu, -1); in pseries_remove_processor()
318 update_numa_cpu_lookup_table(cpu, -1); in pseries_remove_processor()
323 "with physical id 0x%x\n", thread); in pseries_remove_processor()
330 int rc = 0; in dlpar_offline_cpu() local
336 intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); in dlpar_offline_cpu()
338 return -EINVAL; in dlpar_offline_cpu()
353 * device_offline() will return -EBUSY (via cpu_down()) if there in dlpar_offline_cpu()
361 rc = -EBUSY; in dlpar_offline_cpu()
366 rc = device_offline(get_cpu_device(cpu)); in dlpar_offline_cpu()
367 if (rc) in dlpar_offline_cpu()
373 pr_warn("Could not find cpu to offline with physical id 0x%x\n", in dlpar_offline_cpu()
381 return rc; in dlpar_offline_cpu()
386 int rc = 0; in dlpar_online_cpu() local
392 intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); in dlpar_online_cpu()
394 return -EINVAL; in dlpar_online_cpu()
414 rc = device_online(get_cpu_device(cpu)); in dlpar_online_cpu()
415 if (rc) { in dlpar_online_cpu()
425 "with physical id 0x%x\n", thread); in dlpar_online_cpu()
430 return rc; in dlpar_online_cpu()
439 int rc; in dlpar_cpu_exists() local
445 rc = of_property_read_u32(child, "ibm,my-drc-index", in dlpar_cpu_exists()
447 if (rc) in dlpar_cpu_exists()
468 info = of_find_property(parent, "ibm,drc-info", NULL); in drc_info_valid_index()
474 /* First value of ibm,drc-info is number of drc-info records */ in drc_info_valid_index()
505 int rc, index; in valid_cpu_drc_index() local
507 if (of_property_present(parent, "ibm,drc-info")) in valid_cpu_drc_index()
510 /* Note that the format of the ibm,drc-indexes array is in valid_cpu_drc_index()
518 rc = of_property_read_u32_index(parent, "ibm,drc-indexes", in valid_cpu_drc_index()
521 if (rc) in valid_cpu_drc_index()
537 * This device node is unattached but may have siblings; open-code the in pseries_cpuhp_attach_nodes()
540 for (of_changeset_init(&cs); dn != NULL; dn = dn->sibling) { in pseries_cpuhp_attach_nodes()
555 int rc, saved_rc; in dlpar_cpu_add() local
557 pr_debug("Attempting to add CPU, drc index: %x\n", drc_index); in dlpar_cpu_add()
562 return -ENODEV; in dlpar_cpu_add()
567 pr_warn("CPU with drc index %x already exists\n", drc_index); in dlpar_cpu_add()
568 return -EINVAL; in dlpar_cpu_add()
573 pr_warn("Cannot find CPU (drc index %x) to add.\n", drc_index); in dlpar_cpu_add()
574 return -EINVAL; in dlpar_cpu_add()
577 rc = dlpar_acquire_drc(drc_index); in dlpar_cpu_add()
578 if (rc) { in dlpar_cpu_add()
579 pr_warn("Failed to acquire DRC, rc: %d, drc index: %x\n", in dlpar_cpu_add()
580 rc, drc_index); in dlpar_cpu_add()
582 return -EINVAL; in dlpar_cpu_add()
587 pr_warn("Failed call to configure-connector, drc index: %x\n", in dlpar_cpu_add()
591 return -EINVAL; in dlpar_cpu_add()
594 rc = pseries_cpuhp_attach_nodes(dn); in dlpar_cpu_add()
599 if (rc) { in dlpar_cpu_add()
600 saved_rc = rc; in dlpar_cpu_add()
601 pr_warn("Failed to attach node %pOFn, rc: %d, drc index: %x\n", in dlpar_cpu_add()
602 dn, rc, drc_index); in dlpar_cpu_add()
604 rc = dlpar_release_drc(drc_index); in dlpar_cpu_add()
605 if (!rc) in dlpar_cpu_add()
613 rc = dlpar_online_cpu(dn); in dlpar_cpu_add()
614 if (rc) { in dlpar_cpu_add()
615 saved_rc = rc; in dlpar_cpu_add()
616 pr_warn("Failed to online cpu %pOFn, rc: %d, drc index: %x\n", in dlpar_cpu_add()
617 dn, rc, drc_index); in dlpar_cpu_add()
619 rc = dlpar_detach_node(dn); in dlpar_cpu_add()
620 if (!rc) in dlpar_cpu_add()
626 pr_debug("Successfully added CPU %pOFn, drc index: %x\n", dn, in dlpar_cpu_add()
628 return rc; in dlpar_cpu_add()
687 int rc; in dlpar_cpu_remove() local
689 pr_debug("Attempting to remove CPU %pOFn, drc index: %x\n", in dlpar_cpu_remove()
692 rc = dlpar_offline_cpu(dn); in dlpar_cpu_remove()
693 if (rc) { in dlpar_cpu_remove()
694 pr_warn("Failed to offline CPU %pOFn, rc: %d\n", dn, rc); in dlpar_cpu_remove()
695 return -EINVAL; in dlpar_cpu_remove()
698 rc = dlpar_release_drc(drc_index); in dlpar_cpu_remove()
699 if (rc) { in dlpar_cpu_remove()
700 pr_warn("Failed to release drc (%x) for CPU %pOFn, rc: %d\n", in dlpar_cpu_remove()
701 drc_index, dn, rc); in dlpar_cpu_remove()
703 return rc; in dlpar_cpu_remove()
706 rc = pseries_cpuhp_detach_nodes(dn); in dlpar_cpu_remove()
707 if (rc) { in dlpar_cpu_remove()
708 int saved_rc = rc; in dlpar_cpu_remove()
710 pr_warn("Failed to detach CPU %pOFn, rc: %d", dn, rc); in dlpar_cpu_remove()
712 rc = dlpar_acquire_drc(drc_index); in dlpar_cpu_remove()
713 if (!rc) in dlpar_cpu_remove()
719 pr_debug("Successfully removed CPU, drc index: %x\n", drc_index); in dlpar_cpu_remove()
727 int rc; in cpu_drc_index_to_dn() local
730 rc = of_property_read_u32(dn, "ibm,my-drc-index", &my_index); in cpu_drc_index_to_dn()
731 if (rc) in cpu_drc_index_to_dn()
744 int rc; in dlpar_cpu_remove_by_index() local
748 pr_warn("Cannot find CPU (drc index %x) to remove\n", in dlpar_cpu_remove_by_index()
750 return -ENODEV; in dlpar_cpu_remove_by_index()
753 rc = dlpar_cpu_remove(dn, drc_index); in dlpar_cpu_remove_by_index()
755 return rc; in dlpar_cpu_remove_by_index()
761 int rc; in dlpar_cpu() local
763 drc_index = be32_to_cpu(hp_elog->_drc_u.drc_index); in dlpar_cpu()
767 switch (hp_elog->action) { in dlpar_cpu()
769 if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) { in dlpar_cpu()
770 rc = dlpar_cpu_remove_by_index(drc_index); in dlpar_cpu()
773 * device to UNISOLATE is a no-op, but the hypervisor can in dlpar_cpu()
776 if (rc) in dlpar_cpu()
780 rc = -EINVAL; in dlpar_cpu()
783 if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) in dlpar_cpu()
784 rc = dlpar_cpu_add(drc_index); in dlpar_cpu()
786 rc = -EINVAL; in dlpar_cpu()
789 pr_err("Invalid action (%d) specified\n", hp_elog->action); in dlpar_cpu()
790 rc = -EINVAL; in dlpar_cpu()
795 return rc; in dlpar_cpu()
803 int rc; in dlpar_cpu_probe() local
805 rc = kstrtou32(buf, 0, &drc_index); in dlpar_cpu_probe()
806 if (rc) in dlpar_cpu_probe()
807 return -EINVAL; in dlpar_cpu_probe()
809 rc = dlpar_cpu_add(drc_index); in dlpar_cpu_probe()
811 return rc ? rc : count; in dlpar_cpu_probe()
818 int rc; in dlpar_cpu_release() local
822 return -EINVAL; in dlpar_cpu_release()
824 rc = of_property_read_u32(dn, "ibm,my-drc-index", &drc_index); in dlpar_cpu_release()
825 if (rc) { in dlpar_cpu_release()
827 return -EINVAL; in dlpar_cpu_release()
830 rc = dlpar_cpu_remove(dn, drc_index); in dlpar_cpu_release()
833 return rc ? rc : count; in dlpar_cpu_release()
846 err = pseries_add_processor(rd->dn); in pseries_smp_notifier()
849 pseries_remove_processor(rd->dn); in pseries_smp_notifier()
869 "- disabling.\n"); in pseries_cpu_hotplug_init()
873 smp_ops->cpu_offline_self = pseries_cpu_offline_self; in pseries_cpu_hotplug_init()
874 smp_ops->cpu_disable = pseries_cpu_disable; in pseries_cpu_hotplug_init()
875 smp_ops->cpu_die = pseries_cpu_die; in pseries_cpu_hotplug_init()
892 return -ENOMEM; in pseries_dlpar_init()