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ipv6: use this_cpu_read() in rt6_get_pcpu_route() 

this_cpu_read(*X) is faster than *this_cpu_ptr(X)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2019-05-31 18:11:25 -07:00 committed by David S. Miller
parent 4ebcfd9a9f
commit c353071ad0
1 changed files with 2 additions and 3 deletions
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5
net/ipv6/route.c
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@ -1268,10 +1268,9 @@ static struct rt6_info *ip6_rt_pcpu_alloc(const struct fib6_result *res)
/* It should be called with rcu_read_lock() acquired */
static struct rt6_info *rt6_get_pcpu_route(const struct fib6_result *res)
{
struct rt6_info *pcpu_rt, **p;
struct rt6_info *pcpu_rt;
p = this_cpu_ptr(res->nh->rt6i_pcpu);
pcpu_rt = *p;
pcpu_rt = this_cpu_read(*res->nh->rt6i_pcpu);
if (pcpu_rt)
ip6_hold_safe(NULL, &pcpu_rt);