e631ddba58
The goal of summary is to speed up the mount time. Erase block summary (EBS) stores summary information at the end of every (closed) erase block. It is no longer necessary to scan all nodes separetly (and read all pages of them) just read this "small" summary, where every information is stored which is needed at mount time. This summary information is stored in a JFFS2_FEATURE_RWCOMPAT_DELETE. During the mount process if there is no summary info the orignal scan process will be executed. EBS works with NAND and NOR flashes, too. There is a user space tool called sumtool to generate this summary information for a JFFS2 image. Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
261 lines
7.6 KiB
C
261 lines
7.6 KiB
C
/*
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* JFFS2 -- Journalling Flash File System, Version 2.
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*
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* Copyright (C) 2001-2003 Red Hat, Inc.
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*
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* Created by David Woodhouse <dwmw2@infradead.org>
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*
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* For licensing information, see the file 'LICENCE' in this directory.
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*
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* $Id: debug.h,v 1.15 2005/09/07 08:34:54 havasi Exp $
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*
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*/
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#ifndef _JFFS2_DEBUG_H_
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#define _JFFS2_DEBUG_H_
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#include <linux/config.h>
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#ifndef CONFIG_JFFS2_FS_DEBUG
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#define CONFIG_JFFS2_FS_DEBUG 0
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#endif
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#if CONFIG_JFFS2_FS_DEBUG == 1
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/* Enable "paranoia" checks and dumps */
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#define JFFS2_DBG_PARANOIA_CHECKS
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#define JFFS2_DBG_DUMPS
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#define JFFS2_DBG_READINODE_MESSAGES
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#define JFFS2_DBG_FRAGTREE_MESSAGES
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#define JFFS2_DBG_DENTLIST_MESSAGES
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#define JFFS2_DBG_NODEREF_MESSAGES
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#define JFFS2_DBG_INOCACHE_MESSAGES
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#define JFFS2_DBG_SUMMARY_MESSAGES
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#endif
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#if CONFIG_JFFS2_FS_DEBUG == 2
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#define JFFS2_DBG_FRAGTREE2_MESSAGES
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#endif
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/* Sanity checks are supposed to be light-weight and enabled by default */
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#define JFFS2_DBG_SANITY_CHECKS
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/*
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* Dx() are mainly used for debugging messages, they must go away and be
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* superseded by nicer JFFS2_DBG_XXX() macros...
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*/
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#if CONFIG_JFFS2_FS_DEBUG > 0
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#define D1(x) x
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#else
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#define D1(x)
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#endif
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#if CONFIG_JFFS2_FS_DEBUG > 1
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#define D2(x) x
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#else
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#define D2(x)
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#endif
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/* The prefixes of JFFS2 messages */
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#define JFFS2_DBG_MSG_PREFIX "[JFFS2 DBG]"
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#define JFFS2_ERR_MSG_PREFIX "JFFS2 error:"
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#define JFFS2_WARN_MSG_PREFIX "JFFS2 warning:"
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#define JFFS2_NOTICE_MSG_PREFIX "JFFS2 notice:"
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#define JFFS2_ERR_LVL KERN_ERR
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#define JFFS2_WARN_LVL KERN_WARNING
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#define JFFS2_NOTICE_LVL KERN_NOTICE
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#define JFFS2_DBG_LVL KERN_DEBUG
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/* JFFS2 message macros */
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#define JFFS2_ERROR(fmt, ...) \
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do { \
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printk(JFFS2_ERR_LVL JFFS2_ERR_MSG_PREFIX \
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" (%d) %s: " fmt, current->pid, \
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__FUNCTION__, ##__VA_ARGS__); \
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} while(0)
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#define JFFS2_WARNING(fmt, ...) \
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do { \
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printk(JFFS2_WARN_LVL JFFS2_WARN_MSG_PREFIX \
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" (%d) %s: " fmt, current->pid, \
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__FUNCTION__, ##__VA_ARGS__); \
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} while(0)
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#define JFFS2_NOTICE(fmt, ...) \
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do { \
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printk(JFFS2_NOTICE_LVL JFFS2_NOTICE_MSG_PREFIX \
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" (%d) %s: " fmt, current->pid, \
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__FUNCTION__, ##__VA_ARGS__); \
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} while(0)
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#define JFFS2_DEBUG(fmt, ...) \
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do { \
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printk(JFFS2_DBG_LVL JFFS2_DBG_MSG_PREFIX \
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" (%d) %s: " fmt, current->pid, \
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__FUNCTION__, ##__VA_ARGS__); \
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} while(0)
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/*
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* We split our debugging messages on several parts, depending on the JFFS2
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* subsystem the message belongs to.
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*/
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/* Read inode debugging messages */
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#ifdef JFFS2_DBG_READINODE_MESSAGES
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#define JFFS2_DBG_READINODE(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
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#else
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#define JFFS2_DBG_READINODE(fmt, ...)
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#endif
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/* Fragtree build debugging messages */
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#ifdef JFFS2_DBG_FRAGTREE_MESSAGES
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#define JFFS2_DBG_FRAGTREE(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
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#else
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#define JFFS2_DBG_FRAGTREE(fmt, ...)
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#endif
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#ifdef JFFS2_DBG_FRAGTREE2_MESSAGES
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#define JFFS2_DBG_FRAGTREE2(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
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#else
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#define JFFS2_DBG_FRAGTREE2(fmt, ...)
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#endif
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/* Directory entry list manilulation debugging messages */
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#ifdef JFFS2_DBG_DENTLIST_MESSAGES
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#define JFFS2_DBG_DENTLIST(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
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#else
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#define JFFS2_DBG_DENTLIST(fmt, ...)
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#endif
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/* Print the messages about manipulating node_refs */
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#ifdef JFFS2_DBG_NODEREF_MESSAGES
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#define JFFS2_DBG_NODEREF(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
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#else
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#define JFFS2_DBG_NODEREF(fmt, ...)
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#endif
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/* Manipulations with the list of inodes (JFFS2 inocache) */
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#ifdef JFFS2_DBG_INOCACHE_MESSAGES
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#define JFFS2_DBG_INOCACHE(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
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#else
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#define JFFS2_DBG_INOCACHE(fmt, ...)
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#endif
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/* Summary debugging messages */
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#ifdef JFFS2_DBG_SUMMARY_MESSAGES
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#define JFFS2_DBG_SUMMARY(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
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#else
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#define JFFS2_DBG_SUMMARY(fmt, ...)
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#endif
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/* Watch the object allocations */
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#ifdef JFFS2_DBG_MEMALLOC_MESSAGES
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#define JFFS2_DBG_MEMALLOC(fmt, ...) JFFS2_DEBUG(fmt, ##__VA_ARGS__)
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#else
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#define JFFS2_DBG_MEMALLOC(fmt, ...)
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#endif
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/* "Sanity" checks */
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void
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__jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,
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struct jffs2_eraseblock *jeb);
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void
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__jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
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struct jffs2_eraseblock *jeb);
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/* "Paranoia" checks */
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void
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__jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);
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void
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__jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);
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void
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__jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,
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struct jffs2_eraseblock *jeb);
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void
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__jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,
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struct jffs2_eraseblock *jeb);
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void
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__jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,
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uint32_t ofs, int len);
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/* "Dump" functions */
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void
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__jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);
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void
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__jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);
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void
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__jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);
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void
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__jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);
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void
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__jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,
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struct jffs2_eraseblock *jeb);
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void
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__jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,
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struct jffs2_eraseblock *jeb);
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void
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__jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);
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void
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__jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);
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void
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__jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);
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void
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__jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);
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#ifdef JFFS2_DBG_PARANOIA_CHECKS
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#define jffs2_dbg_fragtree_paranoia_check(f) \
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__jffs2_dbg_fragtree_paranoia_check(f)
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#define jffs2_dbg_fragtree_paranoia_check_nolock(f) \
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__jffs2_dbg_fragtree_paranoia_check_nolock(f)
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#define jffs2_dbg_acct_paranoia_check(c, jeb) \
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__jffs2_dbg_acct_paranoia_check(c,jeb)
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#define jffs2_dbg_acct_paranoia_check_nolock(c, jeb) \
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__jffs2_dbg_acct_paranoia_check_nolock(c,jeb)
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#define jffs2_dbg_prewrite_paranoia_check(c, ofs, len) \
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__jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
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#else
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#define jffs2_dbg_fragtree_paranoia_check(f)
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#define jffs2_dbg_fragtree_paranoia_check_nolock(f)
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#define jffs2_dbg_acct_paranoia_check(c, jeb)
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#define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)
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#define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)
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#endif /* !JFFS2_PARANOIA_CHECKS */
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#ifdef JFFS2_DBG_DUMPS
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#define jffs2_dbg_dump_jeb(c, jeb) \
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__jffs2_dbg_dump_jeb(c, jeb);
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#define jffs2_dbg_dump_jeb_nolock(jeb) \
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__jffs2_dbg_dump_jeb_nolock(jeb);
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#define jffs2_dbg_dump_block_lists(c) \
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__jffs2_dbg_dump_block_lists(c)
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#define jffs2_dbg_dump_block_lists_nolock(c) \
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__jffs2_dbg_dump_block_lists_nolock(c)
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#define jffs2_dbg_dump_fragtree(f) \
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__jffs2_dbg_dump_fragtree(f);
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#define jffs2_dbg_dump_fragtree_nolock(f) \
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__jffs2_dbg_dump_fragtree_nolock(f);
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#define jffs2_dbg_dump_buffer(buf, len, offs) \
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__jffs2_dbg_dump_buffer(*buf, len, offs);
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#define jffs2_dbg_dump_node(c, ofs) \
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__jffs2_dbg_dump_node(c, ofs);
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#else
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#define jffs2_dbg_dump_jeb(c, jeb)
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#define jffs2_dbg_dump_jeb_nolock(jeb)
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#define jffs2_dbg_dump_block_lists(c)
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#define jffs2_dbg_dump_block_lists_nolock(c)
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#define jffs2_dbg_dump_fragtree(f)
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#define jffs2_dbg_dump_fragtree_nolock(f)
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#define jffs2_dbg_dump_buffer(buf, len, offs)
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#define jffs2_dbg_dump_node(c, ofs)
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#endif /* !JFFS2_DBG_DUMPS */
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#ifdef JFFS2_DBG_SANITY_CHECKS
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#define jffs2_dbg_acct_sanity_check(c, jeb) \
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__jffs2_dbg_acct_sanity_check(c, jeb)
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#define jffs2_dbg_acct_sanity_check_nolock(c, jeb) \
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__jffs2_dbg_acct_sanity_check_nolock(c, jeb)
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#else
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#define jffs2_dbg_acct_sanity_check(c, jeb)
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#define jffs2_dbg_acct_sanity_check_nolock(c, jeb)
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#endif /* !JFFS2_DBG_SANITY_CHECKS */
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#endif /* _JFFS2_DEBUG_H_ */
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