2c1bbab7f0
The patch changes rx_burst profiling approach: 1. VTune's instrumentation is removed 2. empty hook callback for profiling is added This way all VTune-specific logic moves to the VTune side. Hook is enabled only when CONFIG_RTE_ETHDEV_PROFILE_WITH_VTUNE option is turned on. VTune uses this hook to attach to the polling cycle. It is not possible to attach to the rx_burst directly, as it is inline. Signed-off-by: Ilia Kurakin <ilia.kurakin@intel.com> Acked-by: Keith Wiles <keith.wiles@intel.com> Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2018 Intel Corporation
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*/
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#include "ethdev_profile.h"
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/**
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* This conditional block enables Ethernet device profiling with
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* Intel (R) VTune (TM) Amplifier.
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*/
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#ifdef RTE_ETHDEV_PROFILE_WITH_VTUNE
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/**
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* Hook callback to trace rte_eth_rx_burst() calls.
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*/
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uint16_t
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profile_hook_rx_burst_cb(
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__rte_unused uint16_t port_id, __rte_unused uint16_t queue_id,
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__rte_unused struct rte_mbuf *pkts[], uint16_t nb_pkts,
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__rte_unused uint16_t max_pkts, __rte_unused void *user_param)
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{
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return nb_pkts;
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}
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/**
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* Setting profiling rx callback for a given Ethernet device.
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* This function must be invoked when ethernet device is being configured.
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*
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* @param port_id
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* The port identifier of the Ethernet device.
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* @param rx_queue_num
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* The number of RX queues on specified port.
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*
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* @return
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* - On success, zero.
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* - On failure, a negative value.
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*/
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static inline int
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vtune_profile_rx_init(uint16_t port_id, uint8_t rx_queue_num)
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{
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uint16_t q_id;
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for (q_id = 0; q_id < rx_queue_num; ++q_id) {
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if (!rte_eth_add_rx_callback(
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port_id, q_id, profile_hook_rx_burst_cb, NULL)) {
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return -rte_errno;
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}
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}
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return 0;
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}
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#endif /* RTE_ETHDEV_PROFILE_WITH_VTUNE */
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int
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__rte_eth_dev_profile_init(__rte_unused uint16_t port_id,
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__rte_unused struct rte_eth_dev *dev)
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{
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#ifdef RTE_ETHDEV_PROFILE_WITH_VTUNE
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return vtune_profile_rx_init(port_id, dev->data->nb_rx_queues);
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#endif
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return 0;
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}
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