[PATCH][v2] xfrm: replace NR_CPU with nr_cpu_ids

[Li RongQing]

The default NR_CPUS can be very large, but actual possible nr_cpu_ids
usually is very small. For some x86 distribution, the NR_CPUS is 8192
and nr_cpu_ids is 4, so replace NR_CPU to save some memory

Signed-off-by: Li RongQing <lirongq...@baidu.com>
Signed-off-by: Wang Li <wangl...@baidu.com>
---
 net/xfrm/xfrm_policy.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 40b54cc64243..f8188685c1e9 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2989,11 +2989,11 @@ void __init xfrm_init(void)
 {
        int i;
 
-       xfrm_pcpu_work = kmalloc_array(NR_CPUS, sizeof(*xfrm_pcpu_work),
+       xfrm_pcpu_work = kmalloc_array(nr_cpu_ids, sizeof(*xfrm_pcpu_work),
                                       GFP_KERNEL);
        BUG_ON(!xfrm_pcpu_work);
 
-       for (i = 0; i < NR_CPUS; i++)
+       for (i = 0; i < nr_cpu_ids; i++)
                INIT_WORK(&xfrm_pcpu_work[i], xfrm_pcpu_work_fn);
 
        register_pernet_subsys(&xfrm_net_ops);
-- 
2.16.2