mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![Zeng Heng](/assets/img/avatar_default.png)
Replace seq_printf with seq_puts when const string in reference, which would avoid to deal with unnecessary string format. Signed-off-by: Zeng Heng <zengheng4@huawei.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Dave Chinner <david@fromorbit.com>
164 lines
4.4 KiB
C
164 lines
4.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*/
|
|
#include "xfs.h"
|
|
|
|
struct xstats xfsstats;
|
|
|
|
static int counter_val(struct xfsstats __percpu *stats, int idx)
|
|
{
|
|
int val = 0, cpu;
|
|
|
|
for_each_possible_cpu(cpu)
|
|
val += *(((__u32 *)per_cpu_ptr(stats, cpu) + idx));
|
|
return val;
|
|
}
|
|
|
|
int xfs_stats_format(struct xfsstats __percpu *stats, char *buf)
|
|
{
|
|
int i, j;
|
|
int len = 0;
|
|
uint64_t xs_xstrat_bytes = 0;
|
|
uint64_t xs_write_bytes = 0;
|
|
uint64_t xs_read_bytes = 0;
|
|
uint64_t defer_relog = 0;
|
|
|
|
static const struct xstats_entry {
|
|
char *desc;
|
|
int endpoint;
|
|
} xstats[] = {
|
|
{ "extent_alloc", xfsstats_offset(xs_abt_lookup) },
|
|
{ "abt", xfsstats_offset(xs_blk_mapr) },
|
|
{ "blk_map", xfsstats_offset(xs_bmbt_lookup) },
|
|
{ "bmbt", xfsstats_offset(xs_dir_lookup) },
|
|
{ "dir", xfsstats_offset(xs_trans_sync) },
|
|
{ "trans", xfsstats_offset(xs_ig_attempts) },
|
|
{ "ig", xfsstats_offset(xs_log_writes) },
|
|
{ "log", xfsstats_offset(xs_try_logspace)},
|
|
{ "push_ail", xfsstats_offset(xs_xstrat_quick)},
|
|
{ "xstrat", xfsstats_offset(xs_write_calls) },
|
|
{ "rw", xfsstats_offset(xs_attr_get) },
|
|
{ "attr", xfsstats_offset(xs_iflush_count)},
|
|
{ "icluster", xfsstats_offset(vn_active) },
|
|
{ "vnodes", xfsstats_offset(xb_get) },
|
|
{ "buf", xfsstats_offset(xs_abtb_2) },
|
|
{ "abtb2", xfsstats_offset(xs_abtc_2) },
|
|
{ "abtc2", xfsstats_offset(xs_bmbt_2) },
|
|
{ "bmbt2", xfsstats_offset(xs_ibt_2) },
|
|
{ "ibt2", xfsstats_offset(xs_fibt_2) },
|
|
{ "fibt2", xfsstats_offset(xs_rmap_2) },
|
|
{ "rmapbt", xfsstats_offset(xs_refcbt_2) },
|
|
{ "refcntbt", xfsstats_offset(xs_qm_dqreclaims)},
|
|
/* we print both series of quota information together */
|
|
{ "qm", xfsstats_offset(xs_xstrat_bytes)},
|
|
};
|
|
|
|
/* Loop over all stats groups */
|
|
|
|
for (i = j = 0; i < ARRAY_SIZE(xstats); i++) {
|
|
len += scnprintf(buf + len, PATH_MAX - len, "%s",
|
|
xstats[i].desc);
|
|
/* inner loop does each group */
|
|
for (; j < xstats[i].endpoint; j++)
|
|
len += scnprintf(buf + len, PATH_MAX - len, " %u",
|
|
counter_val(stats, j));
|
|
len += scnprintf(buf + len, PATH_MAX - len, "\n");
|
|
}
|
|
/* extra precision counters */
|
|
for_each_possible_cpu(i) {
|
|
xs_xstrat_bytes += per_cpu_ptr(stats, i)->s.xs_xstrat_bytes;
|
|
xs_write_bytes += per_cpu_ptr(stats, i)->s.xs_write_bytes;
|
|
xs_read_bytes += per_cpu_ptr(stats, i)->s.xs_read_bytes;
|
|
defer_relog += per_cpu_ptr(stats, i)->s.defer_relog;
|
|
}
|
|
|
|
len += scnprintf(buf + len, PATH_MAX-len, "xpc %llu %llu %llu\n",
|
|
xs_xstrat_bytes, xs_write_bytes, xs_read_bytes);
|
|
len += scnprintf(buf + len, PATH_MAX-len, "defer_relog %llu\n",
|
|
defer_relog);
|
|
len += scnprintf(buf + len, PATH_MAX-len, "debug %u\n",
|
|
#if defined(DEBUG)
|
|
1);
|
|
#else
|
|
0);
|
|
#endif
|
|
|
|
return len;
|
|
}
|
|
|
|
void xfs_stats_clearall(struct xfsstats __percpu *stats)
|
|
{
|
|
int c;
|
|
uint32_t vn_active;
|
|
|
|
xfs_notice(NULL, "Clearing xfsstats");
|
|
for_each_possible_cpu(c) {
|
|
preempt_disable();
|
|
/* save vn_active, it's a universal truth! */
|
|
vn_active = per_cpu_ptr(stats, c)->s.vn_active;
|
|
memset(per_cpu_ptr(stats, c), 0, sizeof(*stats));
|
|
per_cpu_ptr(stats, c)->s.vn_active = vn_active;
|
|
preempt_enable();
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
/* legacy quota interfaces */
|
|
#ifdef CONFIG_XFS_QUOTA
|
|
|
|
#define XFSSTAT_START_XQMSTAT xfsstats_offset(xs_qm_dqreclaims)
|
|
#define XFSSTAT_END_XQMSTAT xfsstats_offset(xs_qm_dquot)
|
|
|
|
static int xqm_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
/* maximum; incore; ratio free to inuse; freelist */
|
|
seq_printf(m, "%d\t%d\t%d\t%u\n",
|
|
0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT),
|
|
0, counter_val(xfsstats.xs_stats, XFSSTAT_END_XQMSTAT + 1));
|
|
return 0;
|
|
}
|
|
|
|
/* legacy quota stats interface no 2 */
|
|
static int xqmstat_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
int j;
|
|
|
|
seq_puts(m, "qm");
|
|
for (j = XFSSTAT_START_XQMSTAT; j < XFSSTAT_END_XQMSTAT; j++)
|
|
seq_printf(m, " %u", counter_val(xfsstats.xs_stats, j));
|
|
seq_putc(m, '\n');
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_XFS_QUOTA */
|
|
|
|
int
|
|
xfs_init_procfs(void)
|
|
{
|
|
if (!proc_mkdir("fs/xfs", NULL))
|
|
return -ENOMEM;
|
|
|
|
if (!proc_symlink("fs/xfs/stat", NULL,
|
|
"/sys/fs/xfs/stats/stats"))
|
|
goto out;
|
|
|
|
#ifdef CONFIG_XFS_QUOTA
|
|
if (!proc_create_single("fs/xfs/xqmstat", 0, NULL, xqmstat_proc_show))
|
|
goto out;
|
|
if (!proc_create_single("fs/xfs/xqm", 0, NULL, xqm_proc_show))
|
|
goto out;
|
|
#endif
|
|
return 0;
|
|
|
|
out:
|
|
remove_proc_subtree("fs/xfs", NULL);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
void
|
|
xfs_cleanup_procfs(void)
|
|
{
|
|
remove_proc_subtree("fs/xfs", NULL);
|
|
}
|
|
#endif /* CONFIG_PROC_FS */
|