diff options
| -rw-r--r-- | arch/powerpc/mm/numa.c | 48 | ||||
| -rw-r--r-- | include/linux/cpuhotplug.h | 1 |
2 files changed, 20 insertions, 29 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 669a15e..6dc07dd 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -581,30 +581,22 @@ static void verify_cpu_node_mapping(int cpu, int node) } } -static int cpu_numa_callback(struct notifier_block *nfb, unsigned long action, - void *hcpu) +/* Must run before sched domains notifier. */ +static int ppc_numa_cpu_prepare(unsigned int cpu) { - unsigned long lcpu = (unsigned long)hcpu; - int ret = NOTIFY_DONE, nid; + int nid; - switch (action) { - case CPU_UP_PREPARE: - case CPU_UP_PREPARE_FROZEN: - nid = numa_setup_cpu(lcpu); - verify_cpu_node_mapping((int)lcpu, nid); - ret = NOTIFY_OK; - break; + nid = numa_setup_cpu(cpu); + verify_cpu_node_mapping(cpu, nid); + return 0; +} + +static int ppc_numa_cpu_dead(unsigned int cpu) +{ #ifdef CONFIG_HOTPLUG_CPU - case CPU_DEAD: - case CPU_DEAD_FROZEN: - case CPU_UP_CANCELED: - case CPU_UP_CANCELED_FROZEN: - unmap_cpu_from_node(lcpu); - ret = NOTIFY_OK; - break; + unmap_cpu_from_node(cpu); #endif - } - return ret; + return 0; } /* @@ -913,11 +905,6 @@ static void __init dump_numa_memory_topology(void) } } -static struct notifier_block ppc64_numa_nb = { - .notifier_call = cpu_numa_callback, - .priority = 1 /* Must run before sched domains notifier. */ -}; - /* Initialize NODE_DATA for a node on the local memory */ static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn) { @@ -985,15 +972,18 @@ void __init initmem_init(void) setup_node_to_cpumask_map(); reset_numa_cpu_lookup_table(); - register_cpu_notifier(&ppc64_numa_nb); + /* * We need the numa_cpu_lookup_table to be accurate for all CPUs, * even before we online them, so that we can use cpu_to_{node,mem} * early in boot, cf. smp_prepare_cpus(). + * _nocalls() + manual invocation is used because cpuhp is not yet + * initialized for the boot CPU. */ - for_each_present_cpu(cpu) { - numa_setup_cpu((unsigned long)cpu); - } + cpuhp_setup_state_nocalls(CPUHP_POWER_NUMA_PREPARE, "POWER_NUMA_PREPARE", + ppc_numa_cpu_prepare, ppc_numa_cpu_dead); + for_each_present_cpu(cpu) + numa_setup_cpu(cpu); } static int __init early_numa(char *p) diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 09ef54b..5015f46 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -15,6 +15,7 @@ enum cpuhp_state { CPUHP_X86_HPET_DEAD, CPUHP_X86_APB_DEAD, CPUHP_WORKQUEUE_PREP, + CPUHP_POWER_NUMA_PREPARE, CPUHP_HRTIMERS_PREPARE, CPUHP_PROFILE_PREPARE, CPUHP_X2APIC_PREPARE, |