linux/net/rds/stats.c

/*
 * 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 <linux/export.h>

#include "rds.h"

DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_statistics, rds_stats);
EXPORT_PER_CPU_SYMBOL_GPL(…);

/* :.,$s/unsigned long\>.*\<s_\(.*\);/"\1",/g */

static const char *const rds_stat_names[] = …;

void rds_stats_info_copy(struct rds_info_iterator *iter,
			 uint64_t *values, const char *const *names, size_t nr)
{ … }
EXPORT_SYMBOL_GPL(…);

/*
 * This gives global counters across all the transports.  The strings
 * are copied in so that the tool doesn't need knowledge of the specific
 * stats that we're exporting.  Some are pretty implementation dependent
 * and may change over time.  That doesn't stop them from being useful.
 *
 * This is the only function in the chain that knows about the byte granular
 * length in userspace.  It converts it to number of stat entries that the
 * rest of the functions operate in.
 */
static void rds_stats_info(struct socket *sock, unsigned int len,
			   struct rds_info_iterator *iter,
			   struct rds_info_lengths *lens)
{ … }

void rds_stats_exit(void)
{ … }

int rds_stats_init(void)
{ … }