diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/platforms/pseries/dlpar.c | 188 |
1 files changed, 94 insertions, 94 deletions
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index fd2f0af..12df9e8 100644 --- a/arch/powerpc/platforms/pseries/dlpar.c +++ b/arch/powerpc/platforms/pseries/dlpar.c @@ -288,98 +288,6 @@ int dlpar_detach_node(struct device_node *dn) return 0; } -int online_node_cpus(struct device_node *dn) -{ - int rc = 0; - unsigned int cpu; - int len, nthreads, i; - const u32 *intserv; - - intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); - if (!intserv) - return -EINVAL; - - nthreads = len / sizeof(u32); - - cpu_maps_update_begin(); - for (i = 0; i < nthreads; i++) { - for_each_present_cpu(cpu) { - if (get_hard_smp_processor_id(cpu) != intserv[i]) - continue; - BUG_ON(get_cpu_current_state(cpu) - != CPU_STATE_OFFLINE); - cpu_maps_update_done(); - rc = cpu_up(cpu); - if (rc) - goto out; - cpu_maps_update_begin(); - - break; - } - if (cpu == num_possible_cpus()) - printk(KERN_WARNING "Could not find cpu to online " - "with physical id 0x%x\n", intserv[i]); - } - cpu_maps_update_done(); - -out: - return rc; - -} - -int offline_node_cpus(struct device_node *dn) -{ - int rc = 0; - unsigned int cpu; - int len, nthreads, i; - const u32 *intserv; - - intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); - if (!intserv) - return -EINVAL; - - nthreads = len / sizeof(u32); - - cpu_maps_update_begin(); - for (i = 0; i < nthreads; i++) { - for_each_present_cpu(cpu) { - if (get_hard_smp_processor_id(cpu) != intserv[i]) - continue; - - if (get_cpu_current_state(cpu) == CPU_STATE_OFFLINE) - break; - - if (get_cpu_current_state(cpu) == CPU_STATE_ONLINE) { - cpu_maps_update_done(); - rc = cpu_down(cpu); - if (rc) - goto out; - cpu_maps_update_begin(); - break; - - } - - /* - * The cpu is in CPU_STATE_INACTIVE. - * Upgrade it's state to CPU_STATE_OFFLINE. - */ - set_preferred_offline_state(cpu, CPU_STATE_OFFLINE); - BUG_ON(plpar_hcall_norets(H_PROD, intserv[i]) - != H_SUCCESS); - __cpu_die(cpu); - break; - } - if (cpu == num_possible_cpus()) - printk(KERN_WARNING "Could not find cpu to offline " - "with physical id 0x%x\n", intserv[i]); - } - cpu_maps_update_done(); - -out: - return rc; - -} - #define DR_ENTITY_SENSE 9003 #define DR_ENTITY_PRESENT 1 #define DR_ENTITY_UNUSABLE 2 @@ -448,6 +356,45 @@ void cpu_hotplug_driver_unlock() mutex_unlock(&pseries_cpu_hotplug_mutex); } +static int dlpar_online_cpu(struct device_node *dn) +{ + int rc = 0; + unsigned int cpu; + int len, nthreads, i; + const u32 *intserv; + + intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); + if (!intserv) + return -EINVAL; + + nthreads = len / sizeof(u32); + + cpu_maps_update_begin(); + for (i = 0; i < nthreads; i++) { + for_each_present_cpu(cpu) { + if (get_hard_smp_processor_id(cpu) != intserv[i]) + continue; + BUG_ON(get_cpu_current_state(cpu) + != CPU_STATE_OFFLINE); + cpu_maps_update_done(); + rc = cpu_up(cpu); + if (rc) + goto out; + cpu_maps_update_begin(); + + break; + } + if (cpu == num_possible_cpus()) + printk(KERN_WARNING "Could not find cpu to online " + "with physical id 0x%x\n", intserv[i]); + } + cpu_maps_update_done(); + +out: + return rc; + +} + static ssize_t dlpar_cpu_probe(const char *buf, size_t count) { struct device_node *dn; @@ -497,13 +444,66 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count) dlpar_free_cc_nodes(dn); } - rc = online_node_cpus(dn); + rc = dlpar_online_cpu(dn); out: cpu_hotplug_driver_unlock(); return rc ? rc : count; } +static int dlpar_offline_cpu(struct device_node *dn) +{ + int rc = 0; + unsigned int cpu; + int len, nthreads, i; + const u32 *intserv; + + intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len); + if (!intserv) + return -EINVAL; + + nthreads = len / sizeof(u32); + + cpu_maps_update_begin(); + for (i = 0; i < nthreads; i++) { + for_each_present_cpu(cpu) { + if (get_hard_smp_processor_id(cpu) != intserv[i]) + continue; + + if (get_cpu_current_state(cpu) == CPU_STATE_OFFLINE) + break; + + if (get_cpu_current_state(cpu) == CPU_STATE_ONLINE) { + cpu_maps_update_done(); + rc = cpu_down(cpu); + if (rc) + goto out; + cpu_maps_update_begin(); + break; + + } + + /* + * The cpu is in CPU_STATE_INACTIVE. + * Upgrade it's state to CPU_STATE_OFFLINE. + */ + set_preferred_offline_state(cpu, CPU_STATE_OFFLINE); + BUG_ON(plpar_hcall_norets(H_PROD, intserv[i]) + != H_SUCCESS); + __cpu_die(cpu); + break; + } + if (cpu == num_possible_cpus()) + printk(KERN_WARNING "Could not find cpu to offline " + "with physical id 0x%x\n", intserv[i]); + } + cpu_maps_update_done(); + +out: + return rc; + +} + static ssize_t dlpar_cpu_release(const char *buf, size_t count) { struct device_node *dn; @@ -521,7 +521,7 @@ static ssize_t dlpar_cpu_release(const char *buf, size_t count) } cpu_hotplug_driver_lock(); - rc = offline_node_cpus(dn); + rc = dlpar_offline_cpu(dn); if (rc) { of_node_put(dn); rc = -EINVAL; |