RDS/IB: Stats and sysctls
IB-specific stats and sysctls. Signed-off-by: Andy Grover <andy.grover@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Grover
David S. Miller
parent
1e23b3ee0e
commit
e6babe4cc4
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/*
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* Copyright (c) 2006 Oracle. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#include <linux/percpu.h>
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#include <linux/seq_file.h>
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#include <linux/proc_fs.h>
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#include "rds.h"
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#include "ib.h"
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DEFINE_PER_CPU(struct rds_ib_statistics, rds_ib_stats) ____cacheline_aligned;
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static char *rds_ib_stat_names[] = {
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"ib_connect_raced",
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"ib_listen_closed_stale",
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"ib_tx_cq_call",
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"ib_tx_cq_event",
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"ib_tx_ring_full",
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"ib_tx_throttle",
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"ib_tx_sg_mapping_failure",
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"ib_tx_stalled",
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"ib_tx_credit_updates",
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"ib_rx_cq_call",
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"ib_rx_cq_event",
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"ib_rx_ring_empty",
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"ib_rx_refill_from_cq",
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"ib_rx_refill_from_thread",
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"ib_rx_alloc_limit",
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"ib_rx_credit_updates",
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"ib_ack_sent",
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"ib_ack_send_failure",
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"ib_ack_send_delayed",
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"ib_ack_send_piggybacked",
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"ib_ack_received",
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"ib_rdma_mr_alloc",
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"ib_rdma_mr_free",
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"ib_rdma_mr_used",
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"ib_rdma_mr_pool_flush",
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"ib_rdma_mr_pool_wait",
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"ib_rdma_mr_pool_depleted",
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};
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unsigned int rds_ib_stats_info_copy(struct rds_info_iterator *iter,
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unsigned int avail)
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{
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struct rds_ib_statistics stats = {0, };
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uint64_t *src;
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uint64_t *sum;
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size_t i;
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int cpu;
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if (avail < ARRAY_SIZE(rds_ib_stat_names))
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goto out;
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for_each_online_cpu(cpu) {
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src = (uint64_t *)&(per_cpu(rds_ib_stats, cpu));
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sum = (uint64_t *)&stats;
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for (i = 0; i < sizeof(stats) / sizeof(uint64_t); i++)
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*(sum++) += *(src++);
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}
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rds_stats_info_copy(iter, (uint64_t *)&stats, rds_ib_stat_names,
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ARRAY_SIZE(rds_ib_stat_names));
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out:
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return ARRAY_SIZE(rds_ib_stat_names);
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}
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@ -0,0 +1,137 @@
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/*
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* Copyright (c) 2006 Oracle. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/sysctl.h>
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#include <linux/proc_fs.h>
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#include "ib.h"
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static struct ctl_table_header *rds_ib_sysctl_hdr;
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unsigned long rds_ib_sysctl_max_send_wr = RDS_IB_DEFAULT_SEND_WR;
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unsigned long rds_ib_sysctl_max_recv_wr = RDS_IB_DEFAULT_RECV_WR;
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unsigned long rds_ib_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE;
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static unsigned long rds_ib_sysctl_max_wr_min = 1;
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/* hardware will fail CQ creation long before this */
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static unsigned long rds_ib_sysctl_max_wr_max = (u32)~0;
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unsigned long rds_ib_sysctl_max_unsig_wrs = 16;
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static unsigned long rds_ib_sysctl_max_unsig_wr_min = 1;
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static unsigned long rds_ib_sysctl_max_unsig_wr_max = 64;
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unsigned long rds_ib_sysctl_max_unsig_bytes = (16 << 20);
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static unsigned long rds_ib_sysctl_max_unsig_bytes_min = 1;
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static unsigned long rds_ib_sysctl_max_unsig_bytes_max = ~0UL;
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unsigned int rds_ib_sysctl_flow_control = 1;
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ctl_table rds_ib_sysctl_table[] = {
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{
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.ctl_name = CTL_UNNUMBERED,
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.procname = "max_send_wr",
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.data = &rds_ib_sysctl_max_send_wr,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = &proc_doulongvec_minmax,
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.extra1 = &rds_ib_sysctl_max_wr_min,
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.extra2 = &rds_ib_sysctl_max_wr_max,
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},
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{
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.ctl_name = CTL_UNNUMBERED,
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.procname = "max_recv_wr",
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.data = &rds_ib_sysctl_max_recv_wr,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = &proc_doulongvec_minmax,
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.extra1 = &rds_ib_sysctl_max_wr_min,
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.extra2 = &rds_ib_sysctl_max_wr_max,
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},
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{
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.ctl_name = CTL_UNNUMBERED,
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.procname = "max_unsignaled_wr",
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.data = &rds_ib_sysctl_max_unsig_wrs,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = &proc_doulongvec_minmax,
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.extra1 = &rds_ib_sysctl_max_unsig_wr_min,
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.extra2 = &rds_ib_sysctl_max_unsig_wr_max,
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},
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{
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.ctl_name = CTL_UNNUMBERED,
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.procname = "max_unsignaled_bytes",
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.data = &rds_ib_sysctl_max_unsig_bytes,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = &proc_doulongvec_minmax,
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.extra1 = &rds_ib_sysctl_max_unsig_bytes_min,
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.extra2 = &rds_ib_sysctl_max_unsig_bytes_max,
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},
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{
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.ctl_name = CTL_UNNUMBERED,
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.procname = "max_recv_allocation",
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.data = &rds_ib_sysctl_max_recv_allocation,
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.maxlen = sizeof(unsigned long),
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.mode = 0644,
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.proc_handler = &proc_doulongvec_minmax,
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},
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{
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.ctl_name = CTL_UNNUMBERED,
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.procname = "flow_control",
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.data = &rds_ib_sysctl_flow_control,
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.maxlen = sizeof(rds_ib_sysctl_flow_control),
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.mode = 0644,
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.proc_handler = &proc_dointvec,
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},
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{ .ctl_name = 0}
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};
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static struct ctl_path rds_ib_sysctl_path[] = {
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{ .procname = "net", .ctl_name = CTL_NET, },
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{ .procname = "rds", .ctl_name = CTL_UNNUMBERED, },
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{ .procname = "ib", .ctl_name = CTL_UNNUMBERED, },
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{ }
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};
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void rds_ib_sysctl_exit(void)
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{
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if (rds_ib_sysctl_hdr)
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unregister_sysctl_table(rds_ib_sysctl_hdr);
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}
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int __init rds_ib_sysctl_init(void)
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{
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rds_ib_sysctl_hdr = register_sysctl_paths(rds_ib_sysctl_path, rds_ib_sysctl_table);
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if (rds_ib_sysctl_hdr == NULL)
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return -ENOMEM;
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return 0;
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}
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