linux-stable/fs/xfs/xfs_sysctl.c
Bill O'Donnell 80529c45ab xfs: pass xfsstats structures to handlers and macros
This patch is the next step toward per-fs xfs stats. The patch makes
the show and clear routines able to handle any stats structure
associated with a kobject.

Instead of a single global xfsstats structure, add kobject and a pointer
to a per-cpu struct xfsstats. Modify the macros that manipulate the stats
accordingly: XFS_STATS_INC, XFS_STATS_DEC, and XFS_STATS_ADD now access
xfsstats->xs_stats.

The sysfs functions need to get from the kobject back to the xfsstats
structure which contains it, and pass the pointer to the ->xs_stats
percpu structure into the show & clear routines.

Signed-off-by: Bill O'Donnell <billodo@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-10-12 05:19:45 +11:00

234 lines
5.6 KiB
C

/*
* Copyright (c) 2001-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms 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. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xfs.h"
#include <linux/sysctl.h>
#include <linux/proc_fs.h>
#include "xfs_error.h"
#include "xfs_stats.h"
static struct ctl_table_header *xfs_table_header;
#ifdef CONFIG_PROC_FS
STATIC int
xfs_stats_clear_proc_handler(
struct ctl_table *ctl,
int write,
void __user *buffer,
size_t *lenp,
loff_t *ppos)
{
int ret, *valp = ctl->data;
ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
if (!ret && write && *valp) {
xfs_stats_clearall(xfsstats.xs_stats);
xfs_stats_clear = 0;
}
return ret;
}
STATIC int
xfs_panic_mask_proc_handler(
struct ctl_table *ctl,
int write,
void __user *buffer,
size_t *lenp,
loff_t *ppos)
{
int ret, *valp = ctl->data;
ret = proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
if (!ret && write) {
xfs_panic_mask = *valp;
#ifdef DEBUG
xfs_panic_mask |= (XFS_PTAG_SHUTDOWN_CORRUPT | XFS_PTAG_LOGRES);
#endif
}
return ret;
}
#endif /* CONFIG_PROC_FS */
static struct ctl_table xfs_table[] = {
{
.procname = "irix_sgid_inherit",
.data = &xfs_params.sgid_inherit.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.sgid_inherit.min,
.extra2 = &xfs_params.sgid_inherit.max
},
{
.procname = "irix_symlink_mode",
.data = &xfs_params.symlink_mode.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.symlink_mode.min,
.extra2 = &xfs_params.symlink_mode.max
},
{
.procname = "panic_mask",
.data = &xfs_params.panic_mask.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = xfs_panic_mask_proc_handler,
.extra1 = &xfs_params.panic_mask.min,
.extra2 = &xfs_params.panic_mask.max
},
{
.procname = "error_level",
.data = &xfs_params.error_level.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.error_level.min,
.extra2 = &xfs_params.error_level.max
},
{
.procname = "xfssyncd_centisecs",
.data = &xfs_params.syncd_timer.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.syncd_timer.min,
.extra2 = &xfs_params.syncd_timer.max
},
{
.procname = "inherit_sync",
.data = &xfs_params.inherit_sync.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.inherit_sync.min,
.extra2 = &xfs_params.inherit_sync.max
},
{
.procname = "inherit_nodump",
.data = &xfs_params.inherit_nodump.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.inherit_nodump.min,
.extra2 = &xfs_params.inherit_nodump.max
},
{
.procname = "inherit_noatime",
.data = &xfs_params.inherit_noatim.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.inherit_noatim.min,
.extra2 = &xfs_params.inherit_noatim.max
},
{
.procname = "inherit_nosymlinks",
.data = &xfs_params.inherit_nosym.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.inherit_nosym.min,
.extra2 = &xfs_params.inherit_nosym.max
},
{
.procname = "rotorstep",
.data = &xfs_params.rotorstep.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.rotorstep.min,
.extra2 = &xfs_params.rotorstep.max
},
{
.procname = "inherit_nodefrag",
.data = &xfs_params.inherit_nodfrg.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.inherit_nodfrg.min,
.extra2 = &xfs_params.inherit_nodfrg.max
},
{
.procname = "filestream_centisecs",
.data = &xfs_params.fstrm_timer.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.fstrm_timer.min,
.extra2 = &xfs_params.fstrm_timer.max,
},
{
.procname = "speculative_prealloc_lifetime",
.data = &xfs_params.eofb_timer.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec_minmax,
.extra1 = &xfs_params.eofb_timer.min,
.extra2 = &xfs_params.eofb_timer.max,
},
/* please keep this the last entry */
#ifdef CONFIG_PROC_FS
{
.procname = "stats_clear",
.data = &xfs_params.stats_clear.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = xfs_stats_clear_proc_handler,
.extra1 = &xfs_params.stats_clear.min,
.extra2 = &xfs_params.stats_clear.max
},
#endif /* CONFIG_PROC_FS */
{}
};
static struct ctl_table xfs_dir_table[] = {
{
.procname = "xfs",
.mode = 0555,
.child = xfs_table
},
{}
};
static struct ctl_table xfs_root_table[] = {
{
.procname = "fs",
.mode = 0555,
.child = xfs_dir_table
},
{}
};
int
xfs_sysctl_register(void)
{
xfs_table_header = register_sysctl_table(xfs_root_table);
if (!xfs_table_header)
return -ENOMEM;
return 0;
}
void
xfs_sysctl_unregister(void)
{
unregister_sysctl_table(xfs_table_header);
}