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https://github.com/torvalds/linux
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65b65735fe
Create a top-level debug directory for global debug sysfs attributes. This directory is added and removed on XFS module initialization and removal respectively for DEBUG mode kernels only. It typically resides at /sys/fs/xfs/debug. It is located at the top level of the xfs sysfs hierarchy as attributes might define global behavior or behavior that must be configured before an xfs mount is available (e.g., log recovery behavior). Define the global debug kobject that represents the debug sysfs directory and add generic attribute show/store helpers to support future attributes. No debug attributes are exported as of yet. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/*
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* Copyright (c) 2014 Red Hat, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_SYSFS_H__
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#define __XFS_SYSFS_H__
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extern struct kobj_type xfs_mp_ktype; /* xfs_mount */
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extern struct kobj_type xfs_dbg_ktype; /* debug */
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extern struct kobj_type xfs_log_ktype; /* xlog */
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static inline struct xfs_kobj *
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to_kobj(struct kobject *kobject)
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{
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return container_of(kobject, struct xfs_kobj, kobject);
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}
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static inline void
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xfs_sysfs_release(struct kobject *kobject)
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{
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struct xfs_kobj *kobj = to_kobj(kobject);
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complete(&kobj->complete);
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}
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static inline int
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xfs_sysfs_init(
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struct xfs_kobj *kobj,
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struct kobj_type *ktype,
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struct xfs_kobj *parent_kobj,
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const char *name)
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{
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init_completion(&kobj->complete);
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return kobject_init_and_add(&kobj->kobject, ktype,
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&parent_kobj->kobject, "%s", name);
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}
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static inline void
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xfs_sysfs_del(
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struct xfs_kobj *kobj)
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{
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kobject_del(&kobj->kobject);
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kobject_put(&kobj->kobject);
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wait_for_completion(&kobj->complete);
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}
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#endif /* __XFS_SYSFS_H__ */
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