1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
/*
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* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#include "xfs.h"
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#include <linux/proc_fs.h>
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DEFINE_PER_CPU(struct xfsstats, xfsstats);
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STATIC int
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xfs_read_xfsstats(
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char *buffer,
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char **start,
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off_t offset,
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int count,
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int *eof,
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void *data)
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{
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int c, i, j, len, val;
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__uint64_t xs_xstrat_bytes = 0;
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__uint64_t xs_write_bytes = 0;
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__uint64_t xs_read_bytes = 0;
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static struct xstats_entry {
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char *desc;
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int endpoint;
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} xstats[] = {
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{ "extent_alloc", XFSSTAT_END_EXTENT_ALLOC },
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{ "abt", XFSSTAT_END_ALLOC_BTREE },
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{ "blk_map", XFSSTAT_END_BLOCK_MAPPING },
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{ "bmbt", XFSSTAT_END_BLOCK_MAP_BTREE },
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{ "dir", XFSSTAT_END_DIRECTORY_OPS },
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{ "trans", XFSSTAT_END_TRANSACTIONS },
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{ "ig", XFSSTAT_END_INODE_OPS },
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{ "log", XFSSTAT_END_LOG_OPS },
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{ "push_ail", XFSSTAT_END_TAIL_PUSHING },
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{ "xstrat", XFSSTAT_END_WRITE_CONVERT },
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{ "rw", XFSSTAT_END_READ_WRITE_OPS },
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{ "attr", XFSSTAT_END_ATTRIBUTE_OPS },
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{ "icluster", XFSSTAT_END_INODE_CLUSTER },
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{ "vnodes", XFSSTAT_END_VNODE_OPS },
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{ "buf", XFSSTAT_END_BUF },
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};
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/* Loop over all stats groups */
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for (i=j=len = 0; i < sizeof(xstats)/sizeof(struct xstats_entry); i++) {
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len += sprintf(buffer + len, xstats[i].desc);
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/* inner loop does each group */
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while (j < xstats[i].endpoint) {
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val = 0;
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/* sum over all cpus */
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for (c = 0; c < NR_CPUS; c++) {
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if (!cpu_possible(c)) continue;
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val += *(((__u32*)&per_cpu(xfsstats, c) + j));
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}
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len += sprintf(buffer + len, " %u", val);
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j++;
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}
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buffer[len++] = '\n';
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}
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/* extra precision counters */
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for (i = 0; i < NR_CPUS; i++) {
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if (!cpu_possible(i)) continue;
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xs_xstrat_bytes += per_cpu(xfsstats, i).xs_xstrat_bytes;
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xs_write_bytes += per_cpu(xfsstats, i).xs_write_bytes;
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xs_read_bytes += per_cpu(xfsstats, i).xs_read_bytes;
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}
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len += sprintf(buffer + len, "xpc %Lu %Lu %Lu\n",
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xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
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len += sprintf(buffer + len, "debug %u\n",
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#if defined(DEBUG)
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1);
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#else
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0);
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#endif
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if (offset >= len) {
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*start = buffer;
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*eof = 1;
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return 0;
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}
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*start = buffer + offset;
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if ((len -= offset) > count)
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return count;
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*eof = 1;
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return len;
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}
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void
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xfs_init_procfs(void)
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{
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if (!proc_mkdir("fs/xfs", NULL))
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return;
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create_proc_read_entry("fs/xfs/stat", 0, NULL, xfs_read_xfsstats, NULL);
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}
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void
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xfs_cleanup_procfs(void)
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{
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remove_proc_entry("fs/xfs/stat", NULL);
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remove_proc_entry("fs/xfs", NULL);
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}
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