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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>
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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> | ||
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#include "rds.h" | ||
#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[] = { | ||
"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", | ||
}; | ||
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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; | ||
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if (avail < ARRAY_SIZE(rds_ib_stat_names)) | ||
goto out; | ||
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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++); | ||
} | ||
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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); | ||
} |
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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> | ||
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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; | ||
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; | ||
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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; | ||
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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; | ||
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unsigned int rds_ib_sysctl_flow_control = 1; | ||
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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} | ||
}; | ||
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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, }, | ||
{ } | ||
}; | ||
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void rds_ib_sysctl_exit(void) | ||
{ | ||
if (rds_ib_sysctl_hdr) | ||
unregister_sysctl_table(rds_ib_sysctl_hdr); | ||
} | ||
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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; | ||
} |