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authorlipeng <lipeng321@huawei.com>2017-04-01 12:03:36 +0100
committerDavid S. Miller <davem@davemloft.net>2017-04-03 14:48:43 -0700
commit36eedfde1a3602e8054c16bc295c47764647a208 (patch)
treebbaf7cd85bbd0abfe37a6abff75715753ad5b6ee
parent4b7cdecaa441bc296a507371766109624c177ec0 (diff)
net: hns: Optimize hns_nic_common_poll for better performance
After polling less than buget packages, we need check again. If there are still some packages, we call napi_schedule add softirq queue, this is not better way. So we return buget value instead of napi_schedule. Signed-off-by: lipeng <lipeng321@huawei.com> reviewed-by: Yisen Zhuang <yisen.zhuang@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/ethernet/hisilicon/hns/hns_enet.c50
-rw-r--r--drivers/net/ethernet/hisilicon/hns/hns_enet.h2
2 files changed, 31 insertions, 21 deletions
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index 73ec8c843920..5f67db2dc09c 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -859,7 +859,7 @@ out:
return recv_pkts;
}
-static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
+static bool hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
{
struct hnae_ring *ring = ring_data->ring;
int num = 0;
@@ -873,22 +873,23 @@ static void hns_nic_rx_fini_pro(struct hns_nic_ring_data *ring_data)
ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
ring_data->ring, 1);
- napi_schedule(&ring_data->napi);
+ return false;
+ } else {
+ return true;
}
}
-static void hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
+static bool hns_nic_rx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
{
struct hnae_ring *ring = ring_data->ring;
- int num = 0;
+ int num;
num = readl_relaxed(ring->io_base + RCB_REG_FBDNUM);
- if (num == 0)
- ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
- ring, 0);
+ if (!num)
+ return true;
else
- napi_schedule(&ring_data->napi);
+ return false;
}
static inline void hns_nic_reclaim_one_desc(struct hnae_ring *ring,
@@ -989,7 +990,7 @@ static int hns_nic_tx_poll_one(struct hns_nic_ring_data *ring_data,
return 0;
}
-static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
+static bool hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
{
struct hnae_ring *ring = ring_data->ring;
int head;
@@ -1002,20 +1003,21 @@ static void hns_nic_tx_fini_pro(struct hns_nic_ring_data *ring_data)
ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
ring_data->ring, 1);
- napi_schedule(&ring_data->napi);
+ return false;
+ } else {
+ return true;
}
}
-static void hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
+static bool hns_nic_tx_fini_pro_v2(struct hns_nic_ring_data *ring_data)
{
struct hnae_ring *ring = ring_data->ring;
int head = readl_relaxed(ring->io_base + RCB_REG_HEAD);
if (head == ring->next_to_clean)
- ring_data->ring->q->handle->dev->ops->toggle_ring_irq(
- ring, 0);
+ return true;
else
- napi_schedule(&ring_data->napi);
+ return false;
}
static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
@@ -1042,15 +1044,23 @@ static void hns_nic_tx_clr_all_bufs(struct hns_nic_ring_data *ring_data)
static int hns_nic_common_poll(struct napi_struct *napi, int budget)
{
+ int clean_complete = 0;
struct hns_nic_ring_data *ring_data =
container_of(napi, struct hns_nic_ring_data, napi);
- int clean_complete = ring_data->poll_one(
- ring_data, budget, ring_data->ex_process);
+ struct hnae_ring *ring = ring_data->ring;
- if (clean_complete >= 0 && clean_complete < budget) {
- napi_complete(napi);
- ring_data->fini_process(ring_data);
- return 0;
+try_again:
+ clean_complete += ring_data->poll_one(
+ ring_data, budget - clean_complete,
+ ring_data->ex_process);
+
+ if (clean_complete < budget) {
+ if (ring_data->fini_process(ring_data)) {
+ napi_complete(napi);
+ ring->q->handle->dev->ops->toggle_ring_irq(ring, 0);
+ } else {
+ goto try_again;
+ }
}
return clean_complete;
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.h b/drivers/net/ethernet/hisilicon/hns/hns_enet.h
index fff8f8a21bd0..1b83232082b2 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.h
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.h
@@ -41,7 +41,7 @@ struct hns_nic_ring_data {
int queue_index;
int (*poll_one)(struct hns_nic_ring_data *, int, void *);
void (*ex_process)(struct hns_nic_ring_data *, struct sk_buff *);
- void (*fini_process)(struct hns_nic_ring_data *);
+ bool (*fini_process)(struct hns_nic_ring_data *);
};
/* compatible the difference between two versions */