1. 根目录:
2. fs
3. xfs
4. xfs_btree_trace.c

/*
 * Copyright (c) 2008 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 "xfs_types.h"
#include "xfs_inum.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "xfs_inode.h"
#include "xfs_btree.h"
#include "xfs_btree_trace.h"

STATIC void
xfs_btree_trace_ptr(
	struct xfs_btree_cur	*cur,
	union xfs_btree_ptr	ptr,
	__psunsigned_t		*high,
	__psunsigned_t		*low)
{
	if (cur->bc_flags & XFS_BTREE_LONG_PTRS) {
		__u64 val = be64_to_cpu(ptr.l);
		*high = val >> 32;
		*low = (int)val;
	} else {
		*high = 0;
		*low = be32_to_cpu(ptr.s);
	}
}

/*
 * Add a trace buffer entry for arguments, for a buffer & 1 integer arg.
 */
void
xfs_btree_trace_argbi(
	const char		*func,
	struct xfs_btree_cur	*cur,
	struct xfs_buf		*b,
	int			i,
	int			line)
{
	cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGBI,
				 line, (__psunsigned_t)b, i, 0, 0, 0, 0, 0,
				 0, 0, 0, 0);
}

/*
 * Add a trace buffer entry for arguments, for a buffer & 2 integer args.
 */
void
xfs_btree_trace_argbii(
	const char		*func,
	struct xfs_btree_cur	*cur,
	struct xfs_buf		*b,
	int			i0,
	int			i1,
	int			line)
{
	cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGBII,
				 line, (__psunsigned_t)b, i0, i1, 0, 0, 0, 0,
				 0, 0, 0, 0);
}

/*
 * Add a trace buffer entry for arguments, for 3 block-length args
 * and an integer arg.
 */
void
xfs_btree_trace_argfffi(
	const char		*func,
	struct xfs_btree_cur	*cur,
	xfs_dfiloff_t		o,
	xfs_dfsbno_t		b,
	xfs_dfilblks_t		i,
	int			j,
	int			line)
{
	cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGFFFI,
				 line,
				 o >> 32, (int)o,
				 b >> 32, (int)b,
				 i >> 32, (int)i,
				 (int)j, 0, 0, 0, 0);
}

/*
 * Add a trace buffer entry for arguments, for one integer arg.
 */
void
xfs_btree_trace_argi(
	const char		*func,
	struct xfs_btree_cur	*cur,
	int			i,
	int			line)
{
	cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGI,
				 line, i, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}

/*
 * Add a trace buffer entry for arguments, for int, fsblock, key.
 */
void
xfs_btree_trace_argipk(
	const char		*func,
	struct xfs_btree_cur	*cur,
	int			i,
	union xfs_btree_ptr	ptr,
	union xfs_btree_key	*key,
	int			line)
{
	__psunsigned_t		high, low;
	__uint64_t		l0, l1;

	xfs_btree_trace_ptr(cur, ptr, &high, &low);
	cur->bc_ops->trace_key(cur, key, &l0, &l1);
	cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGIPK,
				 line, i, high, low,
				 l0 >> 32, (int)l0,
				 l1 >> 32, (int)l1,
				 0, 0, 0, 0);
}

/*
 * Add a trace buffer entry for arguments, for int, fsblock, rec.
 */
void
xfs_btree_trace_argipr(
	const char		*func,
	struct xfs_btree_cur	*cur,
	int			i,
	union xfs_btree_ptr	ptr,
	union xfs_btree_rec	*rec,
	int			line)
{
	__psunsigned_t		high, low;
	__uint64_t		l0, l1, l2;

	xfs_btree_trace_ptr(cur, ptr, &high, &low);
	cur->bc_ops->trace_record(cur, rec, &l0, &l1, &l2);
	cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGIPR,
			      line, i,
			      high, low,
			      l0 >> 32, (int)l0,
			      l1 >> 32, (int)l1,
			      l2 >> 32, (int)l2,
			      0, 0);
}

/*
 * Add a trace buffer entry for arguments, for int, key.
 */
void
xfs_btree_trace_argik(
	const char		*func,
	struct xfs_btree_cur	*cur,
	int			i,
	union xfs_btree_key	*key,
	int			line)
{
	__uint64_t		l0, l1;

	cur->bc_ops->trace_key(cur, key, &l0, &l1);
	cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGIK,
				 line, i,
				 l0 >> 32, (int)l0,
				 l1 >> 32, (int)l1,
				 0, 0, 0, 0, 0, 0);
}

/*
 * Add a trace buffer entry for arguments, for record.
 */
void
xfs_btree_trace_argr(
	const char		*func,
	struct xfs_btree_cur	*cur,
	union xfs_btree_rec	*rec,
	int			line)
{
	__uint64_t		l0, l1, l2;

	cur->bc_ops->trace_record(cur, rec, &l0, &l1, &l2);
	cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGR,
			      line,
			      l0 >> 32, (int)l0,
			      l1 >> 32, (int)l1,
			      l2 >> 32, (int)l2,
			      0, 0, 0, 0, 0);
}

/*
 * Add a trace buffer entry for the cursor/operation.
 */
void
xfs_btree_trace_cursor(
	const char		*func,
	struct xfs_btree_cur	*cur,
	int			type,
	int			line)
{
	__uint32_t		s0;
	__uint64_t		l0, l1;
	char			*s;

	switch (type) {
	case XBT_ARGS:
		s = "args";
		break;
	case XBT_ENTRY:
		s = "entry";
		break;
	case XBT_ERROR:
		s = "error";
		break;
	case XBT_EXIT:
		s = "exit";
		break;
	default:
		s = "unknown";
		break;
	}

	cur->bc_ops->trace_cursor(cur, &s0, &l0, &l1);
	cur->bc_ops->trace_enter(cur, func, s, XFS_BTREE_KTRACE_CUR, line,
				 s0,
				 l0 >> 32, (int)l0,
				 l1 >> 32, (int)l1,
				 (__psunsigned_t)cur->bc_bufs[0],
				 (__psunsigned_t)cur->bc_bufs[1],
				 (__psunsigned_t)cur->bc_bufs[2],
				 (__psunsigned_t)cur->bc_bufs[3],
				 (cur->bc_ptrs[0] << 16) | cur->bc_ptrs[1],
				 (cur->bc_ptrs[2] << 16) | cur->bc_ptrs[3]);
}