4750ddb0ba
SGI-PV: 943556 SGI-Modid: xfs-linux:xfs-kern:200113a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*
|
|
* Copyright (c) 2000-2003,2005 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
|
|
*/
|
|
#ifndef __XFS_SUPPORT_KTRACE_H__
|
|
#define __XFS_SUPPORT_KTRACE_H__
|
|
|
|
#include <spin.h>
|
|
|
|
/*
|
|
* Trace buffer entry structure.
|
|
*/
|
|
typedef struct ktrace_entry {
|
|
void *val[16];
|
|
} ktrace_entry_t;
|
|
|
|
/*
|
|
* Trace buffer header structure.
|
|
*/
|
|
typedef struct ktrace {
|
|
lock_t kt_lock; /* mutex to guard counters */
|
|
int kt_nentries; /* number of entries in trace buf */
|
|
int kt_index; /* current index in entries */
|
|
int kt_rollover;
|
|
ktrace_entry_t *kt_entries; /* buffer of entries */
|
|
} ktrace_t;
|
|
|
|
/*
|
|
* Trace buffer snapshot structure.
|
|
*/
|
|
typedef struct ktrace_snap {
|
|
int ks_start; /* kt_index at time of snap */
|
|
int ks_index; /* current index */
|
|
} ktrace_snap_t;
|
|
|
|
|
|
#ifdef CONFIG_XFS_TRACE
|
|
|
|
extern void ktrace_init(int zentries);
|
|
extern void ktrace_uninit(void);
|
|
|
|
extern ktrace_t *ktrace_alloc(int, unsigned int __nocast);
|
|
extern void ktrace_free(ktrace_t *);
|
|
|
|
extern void ktrace_enter(
|
|
ktrace_t *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *,
|
|
void *);
|
|
|
|
extern ktrace_entry_t *ktrace_first(ktrace_t *, ktrace_snap_t *);
|
|
extern int ktrace_nentries(ktrace_t *);
|
|
extern ktrace_entry_t *ktrace_next(ktrace_t *, ktrace_snap_t *);
|
|
extern ktrace_entry_t *ktrace_skip(ktrace_t *, int, ktrace_snap_t *);
|
|
|
|
#else
|
|
#define ktrace_init(x) do { } while (0)
|
|
#define ktrace_uninit() do { } while (0)
|
|
#endif /* CONFIG_XFS_TRACE */
|
|
|
|
#endif /* __XFS_SUPPORT_KTRACE_H__ */
|