86 lines
2.1 KiB
C
86 lines
2.1 KiB
C
/*
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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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* 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_SUPPORT_KTRACE_H__
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#define __XFS_SUPPORT_KTRACE_H__
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/*
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* Trace buffer entry structure.
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*/
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typedef struct ktrace_entry {
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void *val[16];
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} ktrace_entry_t;
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/*
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* Trace buffer header structure.
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*/
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typedef struct ktrace {
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int kt_nentries; /* number of entries in trace buf */
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atomic_t kt_index; /* current index in entries */
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unsigned int kt_index_mask;
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int kt_rollover;
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ktrace_entry_t *kt_entries; /* buffer of entries */
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} ktrace_t;
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/*
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* Trace buffer snapshot structure.
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*/
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typedef struct ktrace_snap {
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int ks_start; /* kt_index at time of snap */
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int ks_index; /* current index */
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} ktrace_snap_t;
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#ifdef CONFIG_XFS_TRACE
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extern void ktrace_init(int zentries);
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extern void ktrace_uninit(void);
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extern ktrace_t *ktrace_alloc(int, unsigned int __nocast);
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extern void ktrace_free(ktrace_t *);
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extern void ktrace_enter(
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ktrace_t *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *,
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void *);
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extern ktrace_entry_t *ktrace_first(ktrace_t *, ktrace_snap_t *);
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extern int ktrace_nentries(ktrace_t *);
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extern ktrace_entry_t *ktrace_next(ktrace_t *, ktrace_snap_t *);
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extern ktrace_entry_t *ktrace_skip(ktrace_t *, int, ktrace_snap_t *);
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#else
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#define ktrace_init(x) do { } while (0)
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#define ktrace_uninit() do { } while (0)
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#endif /* CONFIG_XFS_TRACE */
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#endif /* __XFS_SUPPORT_KTRACE_H__ */
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