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/*
* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
#include "xfs.h"
#include <linux/proc_fs.h>
DEFINE_PER_CPU(struct xfsstats, xfsstats);
STATIC int
xfs_read_xfsstats(
char *buffer,
char **start,
off_t offset,
int count,
int *eof,
void *data)
{
int c, i, j, len, val;
__uint64_t xs_xstrat_bytes = 0;
__uint64_t xs_write_bytes = 0;
__uint64_t xs_read_bytes = 0;
static struct xstats_entry {
char *desc;
int endpoint;
} xstats[] = {
{ "extent_alloc", XFSSTAT_END_EXTENT_ALLOC },
{ "abt", XFSSTAT_END_ALLOC_BTREE },
{ "blk_map", XFSSTAT_END_BLOCK_MAPPING },
{ "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE },
{ "dir", XFSSTAT_END_DIRECTORY_OPS },
{ "trans", XFSSTAT_END_TRANSACTIONS },
{ "ig", XFSSTAT_END_INODE_OPS },
{ "log", XFSSTAT_END_LOG_OPS },
{ "push_ail", XFSSTAT_END_TAIL_PUSHING },
{ "xstrat", XFSSTAT_END_WRITE_CONVERT },
{ "rw", XFSSTAT_END_READ_WRITE_OPS },
{ "attr", XFSSTAT_END_ATTRIBUTE_OPS },
{ "icluster", XFSSTAT_END_INODE_CLUSTER },
{ "vnodes", XFSSTAT_END_VNODE_OPS },
{ "buf", XFSSTAT_END_BUF },
};
/* Loop over all stats groups */
for (i=j=len = 0; i < sizeof(xstats)/sizeof(struct xstats_entry); i++) {
len += sprintf(buffer + len, xstats[i].desc);
/* inner loop does each group */
while (j < xstats[i].endpoint) {
val = 0;
/* sum over all cpus */
for (c = 0; c < NR_CPUS; c++) {
if (!cpu_possible(c)) continue;
val += *(((__u32*)&per_cpu(xfsstats, c) + j));
}
len += sprintf(buffer + len, " %u", val);
j++;
}
buffer[len++] = '\n';
}
/* extra precision counters */
for (i = 0; i < NR_CPUS; i++) {
if (!cpu_possible(i)) continue;
xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
}
len += sprintf(buffer + len, "xpc %Lu %Lu %Lu\n",
xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
len += sprintf(buffer + len, "debug %u\n",
#if defined(DEBUG)
1);
#else
0);
#endif
if (offset >= len) {
*start = buffer;
*eof = 1;
return 0;
}
*start = buffer + offset;
if ((len -= offset) > count)
return count;
*eof = 1;
return len;
}
void
xfs_init_procfs(void)
{
if (!proc_mkdir("fs/xfs", NULL))
return;
create_proc_read_entry("fs/xfs/stat", 0, NULL, xfs_read_xfsstats, NULL);
}
void
xfs_cleanup_procfs(void)
{
remove_proc_entry("fs/xfs/stat", NULL);
remove_proc_entry("fs/xfs", NULL);
}
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