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RDS/IB: Stats and sysctls

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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 2009-02-24 15:30:35 +00:00 committed by David S. Miller
parent 1e23b3ee0e
commit e6babe4cc4
2 changed files with 232 additions and 0 deletions
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95
net/rds/ib_stats.c Normal file
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/*
* 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(struct rds_ib_statistics, rds_ib_stats) ____cacheline_aligned;
static char *rds_ib_stat_names[] = {
"ib_connect_raced",
"ib_listen_closed_stale",
"ib_tx_cq_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_call",
"ib_rx_cq_event",
"ib_rx_ring_empty",
"ib_rx_refill_from_cq",
"ib_rx_refill_from_thread",
"ib_rx_alloc_limit",
"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_alloc",
"ib_rdma_mr_free",
"ib_rdma_mr_used",
"ib_rdma_mr_pool_flush",
"ib_rdma_mr_pool_wait",
"ib_rdma_mr_pool_depleted",
};
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);
}

137
net/rds/ib_sysctl.c Normal file
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/*
* 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/kernel.h>
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include "ib.h"
static struct ctl_table_header *rds_ib_sysctl_hdr;
unsigned long rds_ib_sysctl_max_send_wr = RDS_IB_DEFAULT_SEND_WR;
unsigned long rds_ib_sysctl_max_recv_wr = RDS_IB_DEFAULT_RECV_WR;
unsigned long rds_ib_sysctl_max_recv_allocation = (128 * 1024 * 1024) / RDS_FRAG_SIZE;
static unsigned long rds_ib_sysctl_max_wr_min = 1;
/* hardware will fail CQ creation long before this */
static unsigned long rds_ib_sysctl_max_wr_max = (u32)~0;
unsigned long rds_ib_sysctl_max_unsig_wrs = 16;
static unsigned long rds_ib_sysctl_max_unsig_wr_min = 1;
static unsigned long rds_ib_sysctl_max_unsig_wr_max = 64;
unsigned long rds_ib_sysctl_max_unsig_bytes = (16 << 20);
static unsigned long rds_ib_sysctl_max_unsig_bytes_min = 1;
static unsigned long rds_ib_sysctl_max_unsig_bytes_max = ~0UL;
unsigned int rds_ib_sysctl_flow_control = 1;
ctl_table rds_ib_sysctl_table[] = {
{
.ctl_name = CTL_UNNUMBERED,
.procname = "max_send_wr",
.data = &rds_ib_sysctl_max_send_wr,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_doulongvec_minmax,
.extra1 = &rds_ib_sysctl_max_wr_min,
.extra2 = &rds_ib_sysctl_max_wr_max,
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "max_recv_wr",
.data = &rds_ib_sysctl_max_recv_wr,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_doulongvec_minmax,
.extra1 = &rds_ib_sysctl_max_wr_min,
.extra2 = &rds_ib_sysctl_max_wr_max,
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "max_unsignaled_wr",
.data = &rds_ib_sysctl_max_unsig_wrs,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_doulongvec_minmax,
.extra1 = &rds_ib_sysctl_max_unsig_wr_min,
.extra2 = &rds_ib_sysctl_max_unsig_wr_max,
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "max_unsignaled_bytes",
.data = &rds_ib_sysctl_max_unsig_bytes,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_doulongvec_minmax,
.extra1 = &rds_ib_sysctl_max_unsig_bytes_min,
.extra2 = &rds_ib_sysctl_max_unsig_bytes_max,
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "max_recv_allocation",
.data = &rds_ib_sysctl_max_recv_allocation,
.maxlen = sizeof(unsigned long),
.mode = 0644,
.proc_handler = &proc_doulongvec_minmax,
},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "flow_control",
.data = &rds_ib_sysctl_flow_control,
.maxlen = sizeof(rds_ib_sysctl_flow_control),
.mode = 0644,
.proc_handler = &proc_dointvec,
},
{ .ctl_name = 0}
};
static struct ctl_path rds_ib_sysctl_path[] = {
{ .procname = "net", .ctl_name = CTL_NET, },
{ .procname = "rds", .ctl_name = CTL_UNNUMBERED, },
{ .procname = "ib", .ctl_name = CTL_UNNUMBERED, },
{ }
};
void rds_ib_sysctl_exit(void)
{
if (rds_ib_sysctl_hdr)
unregister_sysctl_table(rds_ib_sysctl_hdr);
}
int __init rds_ib_sysctl_init(void)
{
rds_ib_sysctl_hdr = register_sysctl_paths(rds_ib_sysctl_path, rds_ib_sysctl_table);
if (rds_ib_sysctl_hdr == NULL)
return -ENOMEM;
return 0;
}