net: core: use this_cpu_ptr per-cpu helper

flush_tasklet is a struct, not a pointer in percpu var.
so use this_cpu_ptr to get the member pointer.

Signed-off-by: Shan Wei <davidshan@tencent.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/flow.c b/net/core/flow.c
index e318c7e..b0901ee 100644 (file)
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -327,11 +327,9 @@ static void flow_cache_flush_tasklet(unsigned long data)
 static void flow_cache_flush_per_cpu(void *data)
 {
        struct flow_flush_info *info = data;
-       int cpu;
        struct tasklet_struct *tasklet;
 
-       cpu = smp_processor_id();
-       tasklet = &per_cpu_ptr(info->cache->percpu, cpu)->flush_tasklet;
+       tasklet = this_cpu_ptr(&info->cache->percpu->flush_tasklet);
        tasklet->data = (unsigned long)info;
        tasklet_schedule(tasklet);
 }