diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 49 |
1 files changed, 25 insertions, 24 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 61b0988bba8c..3dcc54da5637 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6491,38 +6491,39 @@ void __init free_area_init(unsigned long *zones_size) __pa(PAGE_OFFSET) >> PAGE_SHIFT, NULL); } -static int page_alloc_cpu_notify(struct notifier_block *self, - unsigned long action, void *hcpu) +static int page_alloc_cpu_dead(unsigned int cpu) { - int cpu = (unsigned long)hcpu; - if (action == CPU_DEAD || action == CPU_DEAD_FROZEN) { - lru_add_drain_cpu(cpu); - drain_pages(cpu); + lru_add_drain_cpu(cpu); + drain_pages(cpu); - /* - * Spill the event counters of the dead processor - * into the current processors event counters. - * This artificially elevates the count of the current - * processor. - */ - vm_events_fold_cpu(cpu); + /* + * Spill the event counters of the dead processor + * into the current processors event counters. + * This artificially elevates the count of the current + * processor. + */ + vm_events_fold_cpu(cpu); - /* - * Zero the differential counters of the dead processor - * so that the vm statistics are consistent. - * - * This is only okay since the processor is dead and cannot - * race with what we are doing. - */ - cpu_vm_stats_fold(cpu); - } - return NOTIFY_OK; + /* + * Zero the differential counters of the dead processor + * so that the vm statistics are consistent. + * + * This is only okay since the processor is dead and cannot + * race with what we are doing. + */ + cpu_vm_stats_fold(cpu); + return 0; } void __init page_alloc_init(void) { - hotcpu_notifier(page_alloc_cpu_notify, 0); + int ret; + + ret = cpuhp_setup_state_nocalls(CPUHP_PAGE_ALLOC_DEAD, + "mm/page_alloc:dead", NULL, + page_alloc_cpu_dead); + WARN_ON(ret < 0); } /* |