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RDMA/hns: Add trace for WQE dumping

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Add trace for WQE dumping, including SQ, RQ and SRQ.

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
               | |         |   |||||     |         |
  roce_test_main-22730   [074] d..1. 16133.898282: hns_sq_wqe: SQ 0xc wqe
(0x0/0xffff0820a6076060): {0x180,0x639c,0x0,0x1000000,0x0,0x0,0x0,0x0,
0x639c,0x300,0xf7e38000,0x0,0x0,0x0,0x0,0x0}

Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250421132750.1363348-3-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Junxian Huang 2025-04-21 21:27:46 +08:00 • committed by Leon Romanovsky
parent 02007e3ddc
commit 6c98c86708
3 changed files with 55 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/infiniband/hw/hns/hns_roce_device.h
View file

@ -1030,6 +1030,7 @@ struct hns_roce_dev {
enum hns_roce_trace_type {
TRACE_SQ,
TRACE_RQ,
TRACE_SRQ,
};
static inline const char *trace_type_to_str(enum hns_roce_trace_type type)
@ -1039,6 +1040,8 @@ static inline const char *trace_type_to_str(enum hns_roce_trace_type type)
return "SQ";
case TRACE_RQ:
return "RQ";
case TRACE_SRQ:
return "SRQ";
default:
return "UNKNOWN";
}

8
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
View file

@ -741,6 +741,8 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp,
else
ret = set_ud_wqe(qp, wr, wqe, &sge_idx, owner_bit);
trace_hns_sq_wqe(qp->qpn, wqe_idx, wqe, 1 << qp->sq.wqe_shift,
wr->wr_id, TRACE_SQ);
if (unlikely(ret)) {
*bad_wr = wr;
goto out;
@ -810,6 +812,9 @@ static void fill_rq_wqe(struct hns_roce_qp *hr_qp, const struct ib_recv_wr *wr,
wqe = hns_roce_get_recv_wqe(hr_qp, wqe_idx);
fill_recv_sge_to_wqe(wr, wqe, max_sge, hr_qp->rq.rsv_sge);
trace_hns_rq_wqe(hr_qp->qpn, wqe_idx, wqe, 1 << hr_qp->rq.wqe_shift,
wr->wr_id, TRACE_RQ);
}
static int hns_roce_v2_post_recv(struct ib_qp *ibqp,
@ -987,6 +992,9 @@ static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq,
fill_recv_sge_to_wqe(wr, wqe, max_sge, srq->rsv_sge);
fill_wqe_idx(srq, wqe_idx);
srq->wrid[wqe_idx] = wr->wr_id;
trace_hns_srq_wqe(srq->srqn, wqe_idx, wqe, 1 << srq->wqe_shift,
wr->wr_id, TRACE_SRQ);
}
if (likely(nreq)) {

44
drivers/infiniband/hw/hns/hns_roce_trace.h
View file

@ -41,6 +41,50 @@ DEFINE_EVENT(flush_head_template, hns_rq_flush_cqe,
enum hns_roce_trace_type type),
TP_ARGS(qpn, pi, type));
#define MAX_SGE_PER_WQE 64
#define MAX_WQE_SIZE (MAX_SGE_PER_WQE * HNS_ROCE_SGE_SIZE)
DECLARE_EVENT_CLASS(wqe_template,
TP_PROTO(unsigned long qpn, u32 idx, void *wqe, u32 len,
u64 id, enum hns_roce_trace_type type),
TP_ARGS(qpn, idx, wqe, len, id, type),
TP_STRUCT__entry(__field(unsigned long, qpn)
__field(u32, idx)
__array(__le32, wqe,
MAX_WQE_SIZE / sizeof(__le32))
__field(u32, len)
__field(u64, id)
__field(enum hns_roce_trace_type, type)
),
TP_fast_assign(__entry->qpn = qpn;
__entry->idx = idx;
__entry->id = id;
memcpy(__entry->wqe, wqe, len);
__entry->len = len / sizeof(__le32);
__entry->type = type;
),
TP_printk("%s 0x%lx wqe(0x%x/0x%llx): %s",
trace_type_to_str(__entry->type),
__entry->qpn, __entry->idx, __entry->id,
__print_array(__entry->wqe, __entry->len,
sizeof(__le32)))
);
DEFINE_EVENT(wqe_template, hns_sq_wqe,
TP_PROTO(unsigned long qpn, u32 idx, void *wqe, u32 len, u64 id,
enum hns_roce_trace_type type),
TP_ARGS(qpn, idx, wqe, len, id, type));
DEFINE_EVENT(wqe_template, hns_rq_wqe,
TP_PROTO(unsigned long qpn, u32 idx, void *wqe, u32 len, u64 id,
enum hns_roce_trace_type type),
TP_ARGS(qpn, idx, wqe, len, id, type));
DEFINE_EVENT(wqe_template, hns_srq_wqe,
TP_PROTO(unsigned long qpn, u32 idx, void *wqe, u32 len, u64 id,
enum hns_roce_trace_type type),
TP_ARGS(qpn, idx, wqe, len, id, type));
#endif /* __HNS_ROCE_TRACE_H */
#undef TRACE_INCLUDE_FILE