diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 7ca668e946e5..67f523c4711a 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -82,6 +82,8 @@ DEFINE_PER_CPU(int, numa_node); EXPORT_PER_CPU_SYMBOL(numa_node); #endif +DEFINE_STATIC_KEY_TRUE(vm_numa_stat_key); + #ifdef CONFIG_HAVE_MEMORYLESS_NODES /* * N.B., Do NOT reference the '_numa_mem_' per cpu variable directly. @@ -2777,6 +2779,10 @@ static inline void zone_statistics(struct zone *preferred_zone, struct zone *z) #ifdef CONFIG_NUMA enum numa_stat_item local_stat = NUMA_LOCAL; + /* skip numa counters update if numa stats is disabled */ + if (!static_branch_likely(&vm_numa_stat_key)) + return; + if (z->node != numa_node_id()) local_stat = NUMA_OTHER; |