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Diffstat (limited to 'mm/page_alloc.c')
-rw-r--r--mm/page_alloc.c49
1 files changed, 25 insertions, 24 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 072d791dce2d..fc98c2bae905 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);
}
/*