158 lines
4 KiB
C
158 lines
4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*/
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#include "xfs.h"
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#include <linux/proc_fs.h>
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struct xstats xfsstats;
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static int counter_val(struct xfsstats __percpu *stats, int idx)
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{
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int val = 0, cpu;
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for_each_possible_cpu(cpu)
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val += *(((__u32 *)per_cpu_ptr(stats, cpu) + idx));
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return val;
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}
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int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)
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{
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int i, j;
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int len = 0;
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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 const 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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{ "abtb2", XFSSTAT_END_ABTB_V2 },
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{ "abtc2", XFSSTAT_END_ABTC_V2 },
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{ "bmbt2", XFSSTAT_END_BMBT_V2 },
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{ "ibt2", XFSSTAT_END_IBT_V2 },
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{ "fibt2", XFSSTAT_END_FIBT_V2 },
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{ "rmapbt", XFSSTAT_END_RMAP_V2 },
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{ "refcntbt", XFSSTAT_END_REFCOUNT },
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/* we print both series of quota information together */
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{ "qm", XFSSTAT_END_QM },
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};
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/* Loop over all stats groups */
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for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {
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len += snprintf(buf + len, PATH_MAX - len, "%s",
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xstats[i].desc);
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/* inner loop does each group */
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for (; j < xstats[i].endpoint; j++)
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len += snprintf(buf + len, PATH_MAX - len, " %u",
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counter_val(stats, j));
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len += snprintf(buf + len, PATH_MAX - len, "\n");
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}
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/* extra precision counters */
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for_each_possible_cpu(i) {
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xs_xstrat_bytes += per_cpu_ptr(stats, i)->s.xs_xstrat_bytes;
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xs_write_bytes += per_cpu_ptr(stats, i)->s.xs_write_bytes;
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xs_read_bytes += per_cpu_ptr(stats, i)->s.xs_read_bytes;
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}
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len += snprintf(buf + len, PATH_MAX-len, "xpc %Lu %Lu %Lu\n",
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xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
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len += snprintf(buf + len, PATH_MAX-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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return len;
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}
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void xfs_stats_clearall(struct xfsstats __percpu *stats)
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{
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int c;
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uint32_t vn_active;
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xfs_notice(NULL, "Clearing xfsstats");
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for_each_possible_cpu(c) {
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preempt_disable();
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/* save vn_active, it's a universal truth! */
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vn_active = per_cpu_ptr(stats, c)->s.vn_active;
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memset(per_cpu_ptr(stats, c), 0, sizeof(*stats));
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per_cpu_ptr(stats, c)->s.vn_active = vn_active;
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preempt_enable();
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}
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}
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#ifdef CONFIG_PROC_FS
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/* legacy quota interfaces */
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#ifdef CONFIG_XFS_QUOTA
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static int xqm_proc_show(struct seq_file *m, void *v)
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{
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/* maximum; incore; ratio free to inuse; freelist */
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seq_printf(m, "%d\t%d\t%d\t%u\n",
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0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT),
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0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT + 1));
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return 0;
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}
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/* legacy quota stats interface no 2 */
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static int xqmstat_proc_show(struct seq_file *m, void *v)
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{
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int j;
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seq_printf(m, "qm");
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for (j = XFSSTAT_END_REFCOUNT; j < XFSSTAT_END_XQMSTAT; j++)
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seq_printf(m, " %u", counter_val(xfsstats.xs_stats, j));
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seq_putc(m, '\n');
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return 0;
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}
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#endif /* CONFIG_XFS_QUOTA */
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int
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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 -ENOMEM;
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if (!proc_symlink("fs/xfs/stat", NULL,
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"/sys/fs/xfs/stats/stats"))
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goto out;
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#ifdef CONFIG_XFS_QUOTA
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if (!proc_create_single("fs/xfs/xqmstat", 0, NULL, xqmstat_proc_show))
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goto out;
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if (!proc_create_single("fs/xfs/xqm", 0, NULL, xqm_proc_show))
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goto out;
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#endif
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return 0;
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out:
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remove_proc_subtree("fs/xfs", NULL);
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return -ENOMEM;
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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_subtree("fs/xfs", NULL);
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}
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#endif /* CONFIG_PROC_FS */
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