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Diffstat (limited to 'lib/librte_ether/ethdev_profile.c')
-rw-r--r-- | lib/librte_ether/ethdev_profile.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/lib/librte_ether/ethdev_profile.c b/lib/librte_ether/ethdev_profile.c deleted file mode 100644 index 0d1dcda3..00000000 --- a/lib/librte_ether/ethdev_profile.c +++ /dev/null @@ -1,135 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause - * Copyright(c) 2010-2017 Intel Corporation - */ - -#include "ethdev_profile.h" - -/** - * This conditional block enables RX queues profiling by tracking wasted - * iterations, i.e. iterations which yielded no RX packets. Profiling is - * performed using the Instrumentation and Tracing Technology (ITT) API, - * employed by the Intel (R) VTune (TM) Amplifier. - */ -#ifdef RTE_ETHDEV_PROFILE_ITT_WASTED_RX_ITERATIONS - -#include <ittnotify.h> - -#define ITT_MAX_NAME_LEN (100) - -/** - * Auxiliary ITT structure belonging to Ethernet device and using to: - * - track RX queue state to determine whether it is wasting loop iterations - * - begin or end ITT task using task domain and task name (handle) - */ -struct itt_profile_rx_data { - /** - * ITT domains for each queue. - */ - __itt_domain *domains[RTE_MAX_QUEUES_PER_PORT]; - /** - * ITT task names for each queue. - */ - __itt_string_handle *handles[RTE_MAX_QUEUES_PER_PORT]; - /** - * Flags indicating the queues state. Possible values: - * 1 - queue is wasting iterations, - * 0 - otherwise. - */ - uint8_t queue_state[RTE_MAX_QUEUES_PER_PORT]; -}; - -/** - * The pool of *itt_profile_rx_data* structures. - */ -struct itt_profile_rx_data itt_rx_data[RTE_MAX_ETHPORTS]; - - -/** - * This callback function manages ITT tasks collection on given port and queue. - * It must be registered with rte_eth_add_rx_callback() to be called from - * rte_eth_rx_burst(). To find more comments see rte_rx_callback_fn function - * type declaration. - */ -static uint16_t -collect_itt_rx_burst_cb(uint16_t port_id, uint16_t queue_id, - __rte_unused struct rte_mbuf *pkts[], uint16_t nb_pkts, - __rte_unused uint16_t max_pkts, __rte_unused void *user_param) -{ - if (unlikely(nb_pkts == 0)) { - if (!itt_rx_data[port_id].queue_state[queue_id]) { - __itt_task_begin( - itt_rx_data[port_id].domains[queue_id], - __itt_null, __itt_null, - itt_rx_data[port_id].handles[queue_id]); - itt_rx_data[port_id].queue_state[queue_id] = 1; - } - } else { - if (unlikely(itt_rx_data[port_id].queue_state[queue_id])) { - __itt_task_end( - itt_rx_data[port_id].domains[queue_id]); - itt_rx_data[port_id].queue_state[queue_id] = 0; - } - } - return nb_pkts; -} - -/** - * Initialization of itt_profile_rx_data for a given Ethernet device. - * This function must be invoked when ethernet device is being configured. - * Result will be stored in the global array *itt_rx_data*. - * - * @param port_id - * The port identifier of the Ethernet device. - * @param port_name - * The name of the Ethernet device. - * @param rx_queue_num - * The number of RX queues on specified port. - * - * @return - * - On success, zero. - * - On failure, a negative value. - */ -static inline int -itt_profile_rx_init(uint16_t port_id, char *port_name, uint8_t rx_queue_num) -{ - uint16_t q_id; - - for (q_id = 0; q_id < rx_queue_num; ++q_id) { - char domain_name[ITT_MAX_NAME_LEN]; - - snprintf(domain_name, sizeof(domain_name), - "RXBurst.WastedIterations.Port_%s.Queue_%d", - port_name, q_id); - itt_rx_data[port_id].domains[q_id] - = __itt_domain_create(domain_name); - - char task_name[ITT_MAX_NAME_LEN]; - - snprintf(task_name, sizeof(task_name), - "port id: %d; queue id: %d", - port_id, q_id); - itt_rx_data[port_id].handles[q_id] - = __itt_string_handle_create(task_name); - - itt_rx_data[port_id].queue_state[q_id] = 0; - - if (!rte_eth_add_rx_callback( - port_id, q_id, collect_itt_rx_burst_cb, NULL)) { - return -rte_errno; - } - } - - return 0; -} -#endif /* RTE_ETHDEV_PROFILE_ITT_WASTED_RX_ITERATIONS */ - -int -__rte_eth_profile_rx_init(__rte_unused uint16_t port_id, - __rte_unused struct rte_eth_dev *dev) -{ -#ifdef RTE_ETHDEV_PROFILE_ITT_WASTED_RX_ITERATIONS - return itt_profile_rx_init( - port_id, dev->data->name, dev->data->nb_rx_queues); -#endif - return 0; -} |