From: Guangbin Huang huangguangbin2@huawei.com
mainline inclusion from mainline-v5.14-rc1 commit 0e32038dc856 category: feature bugzilla: NA CVE: NA DTS: DTS2021090315802
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Currently, user gets tc schedule info by implementing debugfs command "echo dump tc > cmd", this command will dump info in dmesg. It's unnecessary and heavy.
To optimize it, create a single file "tc_sch_info" and use cat command to get info. It will return info to userspace, rather than record in dmesg.
The display style is below: $ cat tc_sch_info enabled tc number: 4 weight_offset: 14 TC MODE WEIGHT 0 dwrr 25 1 dwrr 25 2 dwrr 25 3 dwrr 25 4 dwrr 0 5 dwrr 0 6 dwrr 0 7 dwrr 0
Signed-off-by: Guangbin Huang huangguangbin2@huawei.com Signed-off-by: Huazhong Tan tanhuazhong@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Yonglong Liu liuyonglong@huawei.com --- drivers/net/ethernet/hisilicon/hns3/hnae3.h | 1 + .../ethernet/hisilicon/hns3/hns3_debugfs.c | 8 ++- .../hisilicon/hns3/hns3pf/hclge_debugfs.c | 60 +++++++++---------- 3 files changed, 37 insertions(+), 32 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h index b36494288fd1..bb2b6a9f9c41 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h +++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h @@ -185,6 +185,7 @@ enum hnae3_dbg_cmd { HNAE3_DBG_CMD_TM_MAP, HNAE3_DBG_CMD_TM_PG, HNAE3_DBG_CMD_TM_PORT, + HNAE3_DBG_CMD_TC_SCH_INFO, HNAE3_DBG_CMD_TX_BD, HNAE3_DBG_CMD_RX_BD, HNAE3_DBG_CMD_MAC_UC, diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c index 5eb108f3bb7e..de4a0d242726 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c @@ -78,6 +78,13 @@ static struct hns3_dbg_cmd_info hns3_dbg_cmd[] = { .buf_len = HNS3_DBG_READ_LEN, .init = hns3_dbg_common_file_init, }, + { + .name = "tc_sch_info", + .cmd = HNAE3_DBG_CMD_TC_SCH_INFO, + .dentry = HNS3_DBG_DENTRY_TM, + .buf_len = HNS3_DBG_READ_LEN, + .init = hns3_dbg_common_file_init, + }, { .name = "tx_bd_queue", .cmd = HNAE3_DBG_CMD_TX_BD, @@ -671,7 +678,6 @@ static void hns3_dbg_help(struct hnae3_handle *h) if (!hns3_is_phys_func(h->pdev)) return;
- dev_info(&h->pdev->dev, "dump tc\n"); dev_info(&h->pdev->dev, "dump qos pause cfg\n"); dev_info(&h->pdev->dev, "dump qos pri map\n"); dev_info(&h->pdev->dev, "dump qos buf cfg\n"); diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c index 9b928752e3a9..e12a652169ea 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c @@ -645,49 +645,45 @@ static int hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, return ret; }
-static void hclge_title_idx_print(struct hclge_dev *hdev, bool flag, int index, - char *title_buf, char *true_buf, - char *false_buf) -{ - if (flag) - dev_info(&hdev->pdev->dev, "%s(%d): %s weight: %u\n", - title_buf, index, true_buf, - hdev->tm_info.pg_info[0].tc_dwrr[index]); - else - dev_info(&hdev->pdev->dev, "%s(%d): %s\n", title_buf, index, - false_buf); -} - -static void hclge_dbg_dump_tc(struct hclge_dev *hdev) +static int hclge_dbg_dump_tc(struct hclge_dev *hdev, char *buf, int len) { struct hclge_ets_tc_weight_cmd *ets_weight; struct hclge_desc desc; - int i, ret; + char *sch_mode_str; + int pos = 0; + int ret; + u8 i;
if (!hnae3_dev_dcb_supported(hdev)) { - dev_info(&hdev->pdev->dev, - "Only DCB-supported dev supports tc\n"); - return; + dev_err(&hdev->pdev->dev, + "Only DCB-supported dev supports tc\n"); + return -EOPNOTSUPP; }
hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_ETS_TC_WEIGHT, true); - ret = hclge_cmd_send(&hdev->hw, &desc, 1); if (ret) { - dev_err(&hdev->pdev->dev, "dump tc fail, ret = %d\n", ret); - return; + dev_err(&hdev->pdev->dev, "failed to get tc weight, ret = %d\n", + ret); + return ret; }
ets_weight = (struct hclge_ets_tc_weight_cmd *)desc.data;
- dev_info(&hdev->pdev->dev, "dump tc: %u tc enabled\n", - hdev->tm_info.num_tc); - dev_info(&hdev->pdev->dev, "weight_offset: %u\n", - ets_weight->weight_offset); + pos += scnprintf(buf + pos, len - pos, "enabled tc number: %u\n", + hdev->tm_info.num_tc); + pos += scnprintf(buf + pos, len - pos, "weight_offset: %u\n", + ets_weight->weight_offset); + + pos += scnprintf(buf + pos, len - pos, "TC MODE WEIGHT\n"); + for (i = 0; i < HNAE3_MAX_TC; i++) { + sch_mode_str = ets_weight->tc_weight[i] ? "dwrr" : "sp"; + pos += scnprintf(buf + pos, len - pos, "%u %4s %3u\n", + i, sch_mode_str, + hdev->tm_info.pg_info[0].tc_dwrr[i]); + }
- for (i = 0; i < HNAE3_MAX_TC; i++) - hclge_title_idx_print(hdev, ets_weight->tc_weight[i], i, - "tc", "no sp mode", "sp mode"); + return 0; }
static const struct hclge_dbg_item tm_pg_items[] = { @@ -2012,9 +2008,7 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf) struct hclge_vport *vport = hclge_get_vport(handle); struct hclge_dev *hdev = vport->back;
- if (strncmp(cmd_buf, "dump tc", 7) == 0) { - hclge_dbg_dump_tc(hdev); - } else if (strncmp(cmd_buf, "dump qos pause cfg", 18) == 0) { + if (strncmp(cmd_buf, "dump qos pause cfg", 18) == 0) { hclge_dbg_dump_qos_pause_cfg(hdev); } else if (strncmp(cmd_buf, "dump qos pri map", 16) == 0) { hclge_dbg_dump_qos_pri_map(hdev); @@ -2065,6 +2059,10 @@ static const struct hclge_dbg_func hclge_dbg_cmd_func[] = { .cmd = HNAE3_DBG_CMD_TM_PORT, .dbg_dump = hclge_dbg_dump_tm_port, }, + { + .cmd = HNAE3_DBG_CMD_TC_SCH_INFO, + .dbg_dump = hclge_dbg_dump_tc, + }, { .cmd = HNAE3_DBG_CMD_MAC_UC, .dbg_dump = hclge_dbg_dump_mac_uc,