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From: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
To: <dev@dpdk.org>
Subject: [PATCH v2 2/5] common/mlx5: introduce tracepoints for mlx5 drivers
Date: Tue, 13 Jun 2023 19:58:42 +0300
Message-ID: <20230613165845.19109-3-viacheslavo@nvidia.com>
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There is an intention to engage DPDK tracing capabilities
for mlx5 PMDs monitoring and profiling in various modes.
The patch introduces tracepoints for the Tx datapath in
the ethernet device driver.
Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
drivers/common/mlx5/meson.build | 1 +
drivers/common/mlx5/mlx5_trace.c | 25 +++++++++++
drivers/common/mlx5/mlx5_trace.h | 72 ++++++++++++++++++++++++++++++++
drivers/common/mlx5/version.map | 8 ++++
4 files changed, 106 insertions(+)
create mode 100644 drivers/common/mlx5/mlx5_trace.c
create mode 100644 drivers/common/mlx5/mlx5_trace.h
diff --git a/drivers/common/mlx5/meson.build b/drivers/common/mlx5/meson.build
index 1eefc02f06..28bfbfa324 100644
--- a/drivers/common/mlx5/meson.build
+++ b/drivers/common/mlx5/meson.build
@@ -19,6 +19,7 @@ sources += files(
'mlx5_common_mp.c',
'mlx5_common_mr.c',
'mlx5_malloc.c',
+ 'mlx5_trace.c',
'mlx5_common_pci.c',
'mlx5_common_devx.c',
'mlx5_common_utils.c',
diff --git a/drivers/common/mlx5/mlx5_trace.c b/drivers/common/mlx5/mlx5_trace.c
new file mode 100644
index 0000000000..b9f14413ad
--- /dev/null
+++ b/drivers/common/mlx5/mlx5_trace.c
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2022 NVIDIA Corporation & Affiliates
+ */
+
+#include <rte_trace_point_register.h>
+#include <mlx5_trace.h>
+
+RTE_TRACE_POINT_REGISTER(rte_pmd_mlx5_trace_tx_entry,
+ pmd.net.mlx5.tx.entry)
+
+RTE_TRACE_POINT_REGISTER(rte_pmd_mlx5_trace_tx_exit,
+ pmd.net.mlx5.tx.exit)
+
+RTE_TRACE_POINT_REGISTER(rte_pmd_mlx5_trace_tx_wqe,
+ pmd.net.mlx5.tx.wqe)
+
+RTE_TRACE_POINT_REGISTER(rte_pmd_mlx5_trace_tx_wait,
+ pmd.net.mlx5.tx.wait)
+
+RTE_TRACE_POINT_REGISTER(rte_pmd_mlx5_trace_tx_push,
+ pmd.net.mlx5.tx.push)
+
+RTE_TRACE_POINT_REGISTER(rte_pmd_mlx5_trace_tx_complete,
+ pmd.net.mlx5.tx.complete)
+
diff --git a/drivers/common/mlx5/mlx5_trace.h b/drivers/common/mlx5/mlx5_trace.h
new file mode 100644
index 0000000000..57512e654f
--- /dev/null
+++ b/drivers/common/mlx5/mlx5_trace.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2022 NVIDIA Corporation & Affiliates
+ */
+
+#ifndef RTE_PMD_MLX5_TRACE_H_
+#define RTE_PMD_MLX5_TRACE_H_
+
+/**
+ * @file
+ *
+ * API for mlx5 PMD trace support
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <mlx5_prm.h>
+#include <rte_mbuf.h>
+#include <rte_trace_point.h>
+
+RTE_TRACE_POINT_FP(
+ rte_pmd_mlx5_trace_tx_entry,
+ RTE_TRACE_POINT_ARGS(uint16_t port_id, uint16_t queue_id),
+ rte_trace_point_emit_u16(port_id);
+ rte_trace_point_emit_u16(queue_id);
+)
+
+RTE_TRACE_POINT_FP(
+ rte_pmd_mlx5_trace_tx_exit,
+ RTE_TRACE_POINT_ARGS(uint16_t nb_sent, uint16_t nb_req),
+ rte_trace_point_emit_u16(nb_sent);
+ rte_trace_point_emit_u16(nb_req);
+)
+
+RTE_TRACE_POINT_FP(
+ rte_pmd_mlx5_trace_tx_wqe,
+ RTE_TRACE_POINT_ARGS(uint32_t opcode),
+ rte_trace_point_emit_u32(opcode);
+)
+
+RTE_TRACE_POINT_FP(
+ rte_pmd_mlx5_trace_tx_wait,
+ RTE_TRACE_POINT_ARGS(uint64_t ts),
+ rte_trace_point_emit_u64(ts);
+)
+
+
+RTE_TRACE_POINT_FP(
+ rte_pmd_mlx5_trace_tx_push,
+ RTE_TRACE_POINT_ARGS(const struct rte_mbuf *mbuf, uint16_t wqe_id),
+ rte_trace_point_emit_ptr(mbuf);
+ rte_trace_point_emit_u32(mbuf->pkt_len);
+ rte_trace_point_emit_u16(mbuf->nb_segs);
+ rte_trace_point_emit_u16(wqe_id);
+)
+
+RTE_TRACE_POINT_FP(
+ rte_pmd_mlx5_trace_tx_complete,
+ RTE_TRACE_POINT_ARGS(uint16_t port_id, uint16_t queue_id,
+ uint16_t wqe_id, uint64_t ts),
+ rte_trace_point_emit_u16(port_id);
+ rte_trace_point_emit_u16(queue_id);
+ rte_trace_point_emit_u64(ts);
+ rte_trace_point_emit_u16(wqe_id);
+)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* RTE_PMD_MLX5_TRACE_H_ */
diff --git a/drivers/common/mlx5/version.map b/drivers/common/mlx5/version.map
index e05e1aa8c5..d0ec8571e6 100644
--- a/drivers/common/mlx5/version.map
+++ b/drivers/common/mlx5/version.map
@@ -158,5 +158,13 @@ INTERNAL {
mlx5_os_interrupt_handler_create; # WINDOWS_NO_EXPORT
mlx5_os_interrupt_handler_destroy; # WINDOWS_NO_EXPORT
+
+ __rte_pmd_mlx5_trace_tx_entry;
+ __rte_pmd_mlx5_trace_tx_exit;
+ __rte_pmd_mlx5_trace_tx_wqe;
+ __rte_pmd_mlx5_trace_tx_wait;
+ __rte_pmd_mlx5_trace_tx_push;
+ __rte_pmd_mlx5_trace_tx_complete;
+
local: *;
};
--
2.18.1