cregit-Linux how code gets into the kernel

Release 4.14 net/rds/ib_stats.c

Directory: net/rds
/*
 * Copyright (c) 2006 Oracle.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
#include <linux/percpu.h>
#include <linux/seq_file.h>
#include <linux/proc_fs.h>

#include "rds.h"
#include "ib.h"

DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_ib_statistics, rds_ib_stats);


static const char *const rds_ib_stat_names[] = {
	"ib_connect_raced",
	"ib_listen_closed_stale",
	"s_ib_evt_handler_call",
	"ib_tasklet_call",
	"ib_tx_cq_event",
	"ib_tx_ring_full",
	"ib_tx_throttle",
	"ib_tx_sg_mapping_failure",
	"ib_tx_stalled",
	"ib_tx_credit_updates",
	"ib_rx_cq_event",
	"ib_rx_ring_empty",
	"ib_rx_refill_from_cq",
	"ib_rx_refill_from_thread",
	"ib_rx_alloc_limit",
	"ib_rx_total_frags",
	"ib_rx_total_incs",
	"ib_rx_credit_updates",
	"ib_ack_sent",
	"ib_ack_send_failure",
	"ib_ack_send_delayed",
	"ib_ack_send_piggybacked",
	"ib_ack_received",
	"ib_rdma_mr_8k_alloc",
	"ib_rdma_mr_8k_free",
	"ib_rdma_mr_8k_used",
	"ib_rdma_mr_8k_pool_flush",
	"ib_rdma_mr_8k_pool_wait",
	"ib_rdma_mr_8k_pool_depleted",
	"ib_rdma_mr_1m_alloc",
	"ib_rdma_mr_1m_free",
	"ib_rdma_mr_1m_used",
	"ib_rdma_mr_1m_pool_flush",
	"ib_rdma_mr_1m_pool_wait",
	"ib_rdma_mr_1m_pool_depleted",
	"ib_rdma_mr_8k_reused",
	"ib_rdma_mr_1m_reused",
	"ib_atomic_cswp",
	"ib_atomic_fadd",
};


unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter, unsigned int avail) { struct rds_ib_statistics stats = {0, }; uint64_t *src; uint64_t *sum; size_t i; int cpu; if (avail < ARRAY_SIZE(rds_ib_stat_names)) goto out; for_each_online_cpu(cpu) { src = (uint64_t *)&(per_cpu(rds_ib_stats, cpu)); sum = (uint64_t *)&stats; for (i = 0; i < sizeof(stats) / sizeof(uint64_t); i++) *(sum++) += *(src++); } rds_stats_info_copy(iter, (uint64_t *)&stats, rds_ib_stat_names, ARRAY_SIZE(rds_ib_stat_names)); out: return ARRAY_SIZE(rds_ib_stat_names); }

Contributors

PersonTokensPropCommitsCommitProp
Andy Grover140100.00%1100.00%
Total140100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Andy Grover21685.71%225.00%
Santosh Shilimkar3011.90%450.00%
Tejun Heo41.59%112.50%
Jan Engelhardt20.79%112.50%
Total252100.00%8100.00%
Directory: net/rds
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