maillist inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/ICAF19 CVE: NA Reference: https://web.git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?id... ---------------------------------------------------------------------- Add trace for CMDQ dumping. Output example: $ cat /sys/kernel/debug/tracing/trace tracer: nop entries-in-buffer/entries-written: 2/2 #P:128 _-----=> irqs-off/BH-disabled / _----=> need-resched | / _---=> hardirq/softirq || / _--=> preempt-depth ||| / _-=> migrate-disable |||| / delay TASK-PID CPU# ||||| TIMESTAMP FUNCTION | | | ||||| | | kworker/u512:1-14003 [089] b..1. 50737.238304: hns_cmdq_req: 0000:bd:00.0 cmdq opcode:0x8500, flag:0x1, retval:0x0, data:{0x2,0x0,0x0,0xffff0000,0x32323232,0x0} kworker/u512:1-14003 [089] b..1. 50737.238316: hns_cmdq_resp: 0000:bd:00.0 cmdq opcode:0x8500, flag:0x2, retval:0x0, data:{0x2,0x0,0x0,0xffff0000,0x32323232,0x0} Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com> Link: https://patch.msgid.link/20250421132750.1363348-7-huangjunxian6@hisilicon.co... Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Xinghai Cen <cenxinghai@h-partners.com> Signed-off-by: Donghua Huang <huangdonghua3@h-partners.com> --- drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 4 +++ drivers/infiniband/hw/hns/hns_roce_trace.h | 35 ++++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c index 3067c41699b0..518aaafda553 100644 --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c @@ -1421,6 +1421,8 @@ static int __hns_roce_cmq_send_one(struct hns_roce_dev *hr_dev, tail = csq->head; for (i = 0; i < num; i++) { + trace_hns_cmdq_req(hr_dev, &desc[i]); + csq->desc[csq->head++] = desc[i]; if (csq->head == csq->desc_num) csq->head = 0; @@ -1435,6 +1437,8 @@ static int __hns_roce_cmq_send_one(struct hns_roce_dev *hr_dev, if (hns_roce_cmq_csq_done(hr_dev)) { ret = 0; for (i = 0; i < num; i++) { + trace_hns_cmdq_resp(hr_dev, &csq->desc[tail]); + /* check the result of hardware write back */ desc_ret = le16_to_cpu(csq->desc[tail++].retval); if (tail == csq->desc_num) diff --git a/drivers/infiniband/hw/hns/hns_roce_trace.h b/drivers/infiniband/hw/hns/hns_roce_trace.h index b0bc22b9cc28..eff8c2569cc1 100644 --- a/drivers/infiniband/hw/hns/hns_roce_trace.h +++ b/drivers/infiniband/hw/hns/hns_roce_trace.h @@ -12,6 +12,7 @@ #include <linux/tracepoint.h> #include <linux/string_choices.h> #include "hns_roce_device.h" +#include "hns_roce_hw_v2.h" DECLARE_EVENT_CLASS(flush_head_template, TP_PROTO(unsigned long qpn, u32 pi, @@ -169,6 +170,40 @@ TRACE_EVENT(hns_buf_attr, __entry->region2_size, __entry->region2_hopnum) ); +DECLARE_EVENT_CLASS(cmdq, + TP_PROTO(struct hns_roce_dev *hr_dev, + struct hns_roce_cmq_desc *desc), + TP_ARGS(hr_dev, desc), + + TP_STRUCT__entry(__string(dev_name, dev_name(hr_dev->dev)) + __field(u16, opcode) + __field(u16, flag) + __field(u16, retval) + __array(__le32, data, 6) + ), + + TP_fast_assign(__assign_str(dev_name, dev_name(hr_dev->dev)); + __entry->opcode = le16_to_cpu(desc->opcode); + __entry->flag = le16_to_cpu(desc->flag); + __entry->retval = le16_to_cpu(desc->retval); + memcpy(__entry->data, desc->data, 6 * sizeof(__le32)); + ), + + TP_printk("%s cmdq opcode:0x%x, flag:0x%x, retval:0x%x, data:%s\n", + __get_str(dev_name), __entry->opcode, + __entry->flag, __entry->retval, + __print_array(__entry->data, 6, sizeof(__le32))) +); + +DEFINE_EVENT(cmdq, hns_cmdq_req, + TP_PROTO(struct hns_roce_dev *hr_dev, + struct hns_roce_cmq_desc *desc), + TP_ARGS(hr_dev, desc)); +DEFINE_EVENT(cmdq, hns_cmdq_resp, + TP_PROTO(struct hns_roce_dev *hr_dev, + struct hns_roce_cmq_desc *desc), + TP_ARGS(hr_dev, desc)); + #endif /* __HNS_ROCE_TRACE_H */ #undef TRACE_INCLUDE_FILE -- 2.33.0