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Message-Id: <1235525443-9007-19-git-send-email-andy.grover@oracle.com>
Date: Tue, 24 Feb 2009 17:30:35 -0800
From: Andy Grover <andy.grover@...cle.com>
To: netdev@...r.kernel.org
Cc: rds-devel@....oracle.com, general@...ts.openfabrics.org
Subject: [PATCH 18/26] RDS/IB: Stats and sysctls
IB-specific stats and sysctls.
Signed-off-by: Andy Grover <andy.grover@...cle.com>
---
net/rds/ib_stats.c | 95 +++++++++++++++++++++++++++++++++++
net/rds/ib_sysctl.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 232 insertions(+), 0 deletions(-)
create mode 100644 net/rds/ib_stats.c
create mode 100644 net/rds/ib_sysctl.c
diff --git a/net/rds/ib_stats.c b/net/rds/ib_stats.c
new file mode 100644
index 0000000..02e3e3d
--- /dev/null
+++ b/net/rds/ib_stats.c
@@ -0,0 +1,95 @@
+/*
+ * 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);
+}
diff --git a/net/rds/ib_sysctl.c b/net/rds/ib_sysctl.c
new file mode 100644
index 0000000..d87830d
--- /dev/null
+++ b/net/rds/ib_sysctl.c
@@ -0,0 +1,137 @@
+/*
+ * 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;
+}
--
1.5.6.3
--
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