From: Hao Chen <chenhao288@hisilicon.com>
Date: Mon, 11 Oct 2021 22:46:08 +0800
Subject: net: hns3: debugfs add support dumping page pool info
Patch-mainline: v5.16-rc1
Git-commit: 850bfb912a6deb3134c5922882f8d139f77d8c5c
References: bsc#1190336
Add a file node "page_pool_info" for debugfs, then cat this
file node to dump page pool info as below:
QUEUE_ID ALLOCATE_CNT FREE_CNT POOL_SIZE(PAGE_NUM) ORDER NUMA_ID MAX_LEN
0 512 0 512 0 2 4K
1 512 0 512 0 2 4K
2 512 0 512 0 2 4K
3 512 0 512 0 2 4K
4 512 0 512 0 2 4K
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/hisilicon/hns3/hnae3.h | 1
drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 74 +++++++++++++++++++++
2 files changed, 75 insertions(+)
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -298,6 +298,7 @@ enum hnae3_dbg_cmd {
HNAE3_DBG_CMD_MAC_TNL_STATUS,
HNAE3_DBG_CMD_SERV_INFO,
HNAE3_DBG_CMD_UMV_INFO,
+ HNAE3_DBG_CMD_PAGE_POOL_INFO,
HNAE3_DBG_CMD_UNKNOWN,
};
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -336,6 +336,13 @@ static struct hns3_dbg_cmd_info hns3_dbg
.buf_len = HNS3_DBG_READ_LEN,
.init = hns3_dbg_common_file_init,
},
+ {
+ .name = "page_pool_info",
+ .cmd = HNAE3_DBG_CMD_PAGE_POOL_INFO,
+ .dentry = HNS3_DBG_DENTRY_COMMON,
+ .buf_len = HNS3_DBG_READ_LEN,
+ .init = hns3_dbg_common_file_init,
+ },
};
static struct hns3_dbg_cap_info hns3_dbg_cap[] = {
@@ -941,6 +948,69 @@ static int hns3_dbg_dev_info(struct hnae
return 0;
}
+static const struct hns3_dbg_item page_pool_info_items[] = {
+ { "QUEUE_ID", 2 },
+ { "ALLOCATE_CNT", 2 },
+ { "FREE_CNT", 6 },
+ { "POOL_SIZE(PAGE_NUM)", 2 },
+ { "ORDER", 2 },
+ { "NUMA_ID", 2 },
+ { "MAX_LEN", 2 },
+};
+
+static void hns3_dump_page_pool_info(struct hns3_enet_ring *ring,
+ char **result, u32 index)
+{
+ u32 j = 0;
+
+ sprintf(result[j++], "%u", index);
+ sprintf(result[j++], "%u", ring->page_pool->pages_state_hold_cnt);
+ sprintf(result[j++], "%u",
+ atomic_read(&ring->page_pool->pages_state_release_cnt));
+ sprintf(result[j++], "%u", ring->page_pool->p.pool_size);
+ sprintf(result[j++], "%u", ring->page_pool->p.order);
+ sprintf(result[j++], "%d", ring->page_pool->p.nid);
+ sprintf(result[j++], "%uK", ring->page_pool->p.max_len / 1024);
+}
+
+static int
+hns3_dbg_page_pool_info(struct hnae3_handle *h, char *buf, int len)
+{
+ char data_str[ARRAY_SIZE(page_pool_info_items)][HNS3_DBG_DATA_STR_LEN];
+ char *result[ARRAY_SIZE(page_pool_info_items)];
+ struct hns3_nic_priv *priv = h->priv;
+ char content[HNS3_DBG_INFO_LEN];
+ struct hns3_enet_ring *ring;
+ int pos = 0;
+ u32 i;
+
+ if (!priv->ring) {
+ dev_err(&h->pdev->dev, "priv->ring is NULL\n");
+ return -EFAULT;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(page_pool_info_items); i++)
+ result[i] = &data_str[i][0];
+
+ hns3_dbg_fill_content(content, sizeof(content), page_pool_info_items,
+ NULL, ARRAY_SIZE(page_pool_info_items));
+ pos += scnprintf(buf + pos, len - pos, "%s", content);
+ for (i = 0; i < h->kinfo.num_tqps; i++) {
+ if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||
+ test_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
+ return -EPERM;
+ ring = &priv->ring[(u32)(i + h->kinfo.num_tqps)];
+ hns3_dump_page_pool_info(ring, result, i);
+ hns3_dbg_fill_content(content, sizeof(content),
+ page_pool_info_items,
+ (const char **)result,
+ ARRAY_SIZE(page_pool_info_items));
+ pos += scnprintf(buf + pos, len - pos, "%s", content);
+ }
+
+ return 0;
+}
+
static int hns3_dbg_get_cmd_index(struct hns3_dbg_data *dbg_data, u32 *index)
{
u32 i;
@@ -982,6 +1052,10 @@ static const struct hns3_dbg_func hns3_d
.cmd = HNAE3_DBG_CMD_TX_QUEUE_INFO,
.dbg_dump = hns3_dbg_tx_queue_info,
},
+ {
+ .cmd = HNAE3_DBG_CMD_PAGE_POOL_INFO,
+ .dbg_dump = hns3_dbg_page_pool_info,
+ },
};
static int hns3_dbg_read_cmd(struct hns3_dbg_data *dbg_data,