diff options
Diffstat (limited to 'include/linux/netdevice.h')
| -rw-r--r-- | include/linux/netdevice.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index f3a3b761abfb..f5a840c07cf1 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3459,6 +3459,32 @@ static inline bool dev_has_header(const struct net_device *dev) return dev->header_ops && dev->header_ops->create; } +struct numa_drop_counters { + atomic_t drops0 ____cacheline_aligned_in_smp; + atomic_t drops1 ____cacheline_aligned_in_smp; +}; + +static inline int numa_drop_read(const struct numa_drop_counters *ndc) +{ + return atomic_read(&ndc->drops0) + atomic_read(&ndc->drops1); +} + +static inline void numa_drop_add(struct numa_drop_counters *ndc, int val) +{ + int n = numa_node_id() % 2; + + if (n) + atomic_add(val, &ndc->drops1); + else + atomic_add(val, &ndc->drops0); +} + +static inline void numa_drop_reset(struct numa_drop_counters *ndc) +{ + atomic_set(&ndc->drops0, 0); + atomic_set(&ndc->drops1, 0); +} + /* * Incoming packets are placed on per-CPU queues */ @@ -3504,7 +3530,7 @@ struct softnet_data { struct sk_buff_head input_pkt_queue; struct napi_struct backlog; - atomic_t dropped ____cacheline_aligned_in_smp; + struct numa_drop_counters drop_counters; /* Another possibly contended cache line */ spinlock_t defer_lock ____cacheline_aligned_in_smp; |