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Commit e0c8e42f authored by Artem B. Bityutskiy's avatar Artem B. Bityutskiy Committed by Thomas Gleixner
Browse files

[JFFS2] Debug code clean up - step 3 



Various simplifiactions. printk format corrections.
Convert more code to use the new debug functions.

Signed-off-by: default avatarArtem B. Bityutskiy <dedekind@infradead.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 6dac02a5

fs/jffs2/build.c

+3 −3
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ 
 *

 * For licensing information, see the file 'LICENCE' in this directory.

 *

 * $Id: build.c,v 1.74 2005/07/17 12:01:42 dedekind Exp $

 * $Id: build.c,v 1.75 2005/07/22 10:32:07 dedekind Exp $

 *

 */
@@ -104,7 +104,7 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c) 
		goto exit;



	D1(printk(KERN_DEBUG "Scanned flash completely\n"));

	D2(jffs2_dbg_dump_block_lists(c));

	jffs2_dbg_dump_block_lists_nolock(c);



	c->flags |= JFFS2_SB_FLAG_BUILDING;

	/* Now scan the directory tree, increasing nlink according to every dirent found. */
@@ -168,7 +168,7 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c) 
	c->flags &= ~JFFS2_SB_FLAG_BUILDING;

	

	D1(printk(KERN_DEBUG "Pass 3 complete\n"));

	jffs2_dbg_dump_block_lists(c);

	jffs2_dbg_dump_block_lists_nolock(c);



	/* Rotate the lists by some number to ensure wear levelling */

	jffs2_rotate_lists(c);

fs/jffs2/debug.c

+370 −156

File changed.

Preview size limit exceeded, changes collapsed.

fs/jffs2/debug.h

+217 −34
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ 
 *

 * For licensing information, see the file 'LICENCE' in this directory.

 *

 * $Id: debug.h,v 1.1 2005/07/17 06:56:20 dedekind Exp $

 * $Id: debug.h,v 1.5 2005/07/24 15:14:14 dedekind Exp $

 *

 */

#ifndef _JFFS2_DEBUG_H_
@@ -15,12 +15,52 @@ 


#include <linux/config.h>



/* ------------------------------------------------ */

/* TODO: remove */

#undef CONFIG_JFFS2_FS_DEBUG

#define CONFIG_JFFS2_FS_DEBUG 0

//#define JFFS2_DBG_PARANOIA_CHECKS

//#define JFFS2_DBG_DUMPS

#define JFFS2_DBG_READINODE_MESSAGES

//#define JFFS2_DBG_FRAGTREE_MESSAGES

//#define JFFS2_DBG_FRAGTREE2_MESSAGES

#undef KERN_DEBUG

#undef KERN_WARNING

#undef KERN_NOTICE

#undef KERN_ERR

#define KERN_DEBUG   KERN_CRIT

#define KERN_WARNING KERN_CRIT

#define KERN_NOTICE  KERN_CRIT

#define KERN_ERR     KERN_CRIT

/* ------------------------------------------------ */



#ifndef CONFIG_JFFS2_FS_DEBUG

#define CONFIG_JFFS2_FS_DEBUG 1

#endif



#if CONFIG_JFFS2_FS_DEBUG > 0

#if CONFIG_JFFS2_FS_DEBUG == 1

/* Enable "paranoia" checks and dumps */

#define JFFS2_DBG_PARANOIA_CHECKS

#define JFFS2_DBG_DUMPS

#define JFFS2_DBG_READINODE_MESSAGES

#define JFFS2_DBG_FRAGTREE_MESSAGES

#define JFFS2_DBG_DENTLIST_MESSAGES

#define JFFS2_DBG_NODEREF_MESSAGES

#define JFFS2_DBG_INOCACHE_MESSAGES

#endif



#if CONFIG_JFFS2_FS_DEBUG == 2

#define JFFS2_DBG_FRAGTREE2_MESSAGES

#endif



/* Enable JFFS2 sanity checks by default */

#define JFFS2_DBG_SANITY_CHECKS



/* 

 * Dx() are mainly used for debugging messages, they must go away and be

 * superseded by nicer JFFS2_DBG_XXX() macros...

 */

#if CONFIG_JFFS2_FS_DEBUG > 0

#define D1(x) x

#else

#define D1(x)
@@ -32,73 +72,216 @@ 
#define D2(x)

#endif



/* Enable JFFS2 sanity checks */

#define JFFS2_DBG_SANITY_CHECKS

/* The prefixes of JFFS2 messages */

#define JFFS2_DBG_MSG_PREFIX "[JFFS2 DBG]"

#define JFFS2_ERR_MSG_PREFIX "JFFS2 error: "

#define JFFS2_WARN_MSG_PREFIX "JFFS2 warning: "

#define JFFS2_NOTICE_MSG_PREFIX "JFFS2 notice: "



#if CONFIG_JFFS2_FS_DEBUG > 0

void

jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);

#define JFFS2_ERR_LVL		KERN_ERR

#define JFFS2_WARN_LVL		KERN_WARNING

#define JFFS2_NOTICE_LVL	KERN_NOTICE

#define JFFS2_DBG_LVL		KERN_DEBUG



void

jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);

/* JFFS2 message macros */

#define JFFS2_ERROR(fmt, ...)						\

	do {								\

		printk(JFFS2_ERR_LVL JFFS2_ERR_MSG_PREFIX " %s: "	\

				fmt, __FUNCTION__, ##__VA_ARGS__);	\

	} while(0)



void

jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);

#define JFFS2_WARNING(fmt, ...)						\

	do {								\

		printk(JFFS2_WARN_LVL JFFS2_WARN_MSG_PREFIX " %s: "	\

				fmt, __FUNCTION__, ##__VA_ARGS__);	\

	} while(0)

			

void

jffs2_dbg_dump_buffer(char *buf, int len, uint32_t offs);

#define JFFS2_NOTICE(fmt, ...)						\

	do {								\

		printk(JFFS2_NOTICE_LVL JFFS2_NOTICE_MSG_PREFIX " %s: "	\

				fmt, __FUNCTION__, ##__VA_ARGS__);	\

	} while(0)



#define JFFS2_DEBUG(fmt, ...)						\

	do {								\

		printk(JFFS2_DBG_LVL JFFS2_DBG_MSG_PREFIX " %s: "	\

				fmt, __FUNCTION__, ##__VA_ARGS__);	\

	} while(0)



/* 

 * We split our debugging messages on several parts, depending on the JFFS2

 * subsystem the message belongs to.

 */

/* Read inode debugging messages */

#ifdef JFFS2_DBG_READINODE_MESSAGES

#define JFFS2_DBG_READINODE(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)

#else

#define JFFS2_DBG_READINODE(fmt, ...)

#endif



#ifdef JFFS2_DBG_PARANOIA_CHECKS

void

jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);

/* Fragtree build debugging messages */

#ifdef JFFS2_DBG_FRAGTREE_MESSAGES

#define JFFS2_DBG_FRAGTREE(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)

#else

#define JFFS2_DBG_FRAGTREE(fmt, ...)

#endif



/* Directory entry list manilulation debugging messages */

#ifdef JFFS2_DBG_DENTLIST_MESSAGES

#define JFFS2_DBG_DENTLIST(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)

#else

#define JFFS2_DBG_DENTLIST(fmt, ...)

#endif

#ifdef JFFS2_DBG_FRAGTREE2_MESSAGES

#define JFFS2_DBG_FRAGTREE2(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)

#else

#define JFFS2_DBG_FRAGTREE2(fmt, ...)

#endif



/* Plays with node_refs */

#ifdef JFFS2_DBG_NODEREF_MESSAGES

#define JFFS2_DBG_NODEREF(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)

#else

#define JFFS2_DBG_NODEREF(fmt, ...)

#endif



/* Plays with the list of inodes (JFFS2 inocache) */

#ifdef JFFS2_DBG_INOCACHE_MESSAGES

#define JFFS2_DBG_INOCACHE(fmt, ...)	JFFS2_DEBUG(fmt, ##__VA_ARGS__)

#else

#define JFFS2_DBG_INOCACHE(fmt, ...)

#endif



/* "Paranoia" checks */

void

__jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f);

void

jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,

__jffs2_dbg_fragtree_paranoia_check_nolock(struct jffs2_inode_info *f);

void

__jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c,

			   	struct jffs2_eraseblock *jeb);



void

jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,

__jffs2_dbg_acct_paranoia_check_nolock(struct jffs2_sb_info *c,

				       struct jffs2_eraseblock *jeb);

void

__jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c,

				    uint32_t ofs, int len);



/* "Dump" functions */

void

__jffs2_dbg_dump_jeb(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb);

void

__jffs2_dbg_dump_jeb_nolock(struct jffs2_eraseblock *jeb);

void

__jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c);

void

__jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c);

void

__jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c,

		 	   struct jffs2_eraseblock *jeb);

void

__jffs2_dbg_dump_node_refs_nolock(struct jffs2_sb_info *c,

				  struct jffs2_eraseblock *jeb);

void

__jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f);

void

__jffs2_dbg_dump_fragtree_nolock(struct jffs2_inode_info *f);

void

__jffs2_dbg_dump_buffer(unsigned char *buf, int len, uint32_t offs);

void

__jffs2_dbg_dump_node(struct jffs2_sb_info *c, uint32_t ofs);



#ifdef JFFS2_DBG_PARANOIA_CHECKS

#define jffs2_dbg_fragtree_paranoia_check(f)			\

	__jffs2_dbg_fragtree_paranoia_check(f)

#define jffs2_dbg_fragtree_paranoia_check_nolock(f)		\

	__jffs2_dbg_fragtree_paranoia_check_nolock(f)

#define jffs2_dbg_acct_paranoia_check(c, jeb)			\

	__jffs2_dbg_acct_paranoia_check(c,jeb)

#define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)		\

	__jffs2_dbg_acct_paranoia_check_nolock(c,jeb)

#define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)		\

	__jffs2_dbg_prewrite_paranoia_check(c, ofs, len)

#else

#define jffs2_dbg_fragtree_paranoia_check(f)

#define jffs2_dbg_fragtree_paranoia_check_nolock(f)

#define jffs2_dbg_acct_paranoia_check(c, jeb)

#define jffs2_dbg_acct_paranoia_check_nolock(c, jeb)

#define jffs2_dbg_prewrite_paranoia_check(c, ofs, len)

#endif /* !JFFS2_PARANOIA_CHECKS */



#ifdef JFFS2_DBG_DUMPS

#define jffs2_dbg_dump_jeb(c, jeb)				\

	__jffs2_dbg_dump_jeb(c, jeb);

#define jffs2_dbg_dump_jeb_nolock(jeb)				\

	__jffs2_dbg_dump_jeb_nolock(jeb);

#define jffs2_dbg_dump_block_lists(c)				\

	__jffs2_dbg_dump_block_lists(c)

#define jffs2_dbg_dump_block_lists_nolock(c)			\

	__jffs2_dbg_dump_block_lists_nolock(c)

#define jffs2_dbg_dump_fragtree(f)				\

	__jffs2_dbg_dump_fragtree(f);

#define jffs2_dbg_dump_fragtree_nolock(f)			\

	__jffs2_dbg_dump_fragtree_nolock(f);

#define jffs2_dbg_dump_buffer(buf, len, offs)			\

	__jffs2_dbg_dump_buffer(*buf, len, offs);

#define jffs2_dbg_dump_node(c, ofs)				\

	__jffs2_dbg_dump_node(c, ofs);

#else

#define jffs2_dbg_dump_jeb(c, jeb)

#define jffs2_dbg_dump_jeb_nolock(jeb)

#define jffs2_dbg_dump_block_lists(c)

#define jffs2_dbg_dump_block_lists_nolock(c)

#define jffs2_dbg_dump_fragtree(f)

#define jffs2_dbg_dump_fragtree_nolock(f)

#define jffs2_dbg_dump_buffer(buf, len, offs)

#define jffs2_dbg_dump_node(c, ofs)

#endif /* !JFFS2_DBG_DUMPS */



/*

 * Sanity checks are supposed to be light-weight and enabled by default.

 */

#ifdef JFFS2_DBG_SANITY_CHECKS

/*

 * Check the space accounting of the file system and of

 * the JFFS3 erasable block 'jeb'.

 * the JFFS2 erasable block 'jeb'.

 */

static inline void

jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,

jffs2_dbg_acct_sanity_check_nolock(struct jffs2_sb_info *c,

				   struct jffs2_eraseblock *jeb)

{

	if (unlikely(jeb && jeb->used_size + jeb->dirty_size +

			jeb->free_size + jeb->wasted_size +

			jeb->unchecked_size != c->sector_size)) {

		printk(KERN_ERR "Eeep. Space accounting for block at 0x%08x is screwed\n", jeb->offset);

		printk(KERN_ERR "free %#08x + dirty %#08x + used %#08x + wasted %#08x + unchecked "

				"%#08x != total %#08x\n", jeb->free_size, jeb->dirty_size, jeb->used_size,

		JFFS2_ERROR("eeep, space accounting for block at 0x%08x is screwed.\n", jeb->offset);

		JFFS2_ERROR("free %#08x + dirty %#08x + used %#08x + wasted %#08x + unchecked "

			"%#08x != total %#08x.\n", jeb->free_size, jeb->dirty_size, jeb->used_size,

			jeb->wasted_size, jeb->unchecked_size, c->sector_size);

		BUG();

	}



	if (unlikely(c->used_size + c->dirty_size + c->free_size + c->erasing_size + c->bad_size

				+ c->wasted_size + c->unchecked_size != c->flash_size)) {

		printk(KERN_ERR "Eeep. Space accounting superblock info is screwed\n");

		printk(KERN_ERR "free %#08x + dirty %#08x + used %#08x + erasing %#08x + bad %#08x + "

				"wasted %#08x + unchecked %#08x != total %#08x\n",

		JFFS2_ERROR("eeep, space accounting superblock info is screwed.\n");

		JFFS2_ERROR("free %#08x + dirty %#08x + used %#08x + erasing %#08x + bad %#08x + "

			"wasted %#08x + unchecked %#08x != total %#08x.\n",

			c->free_size, c->dirty_size, c->used_size, c->erasing_size, c->bad_size,

			c->wasted_size, c->unchecked_size, c->flash_size);

		BUG();

	}

}

#else



static inline void

jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,

			    struct jffs2_eraseblock *jeb);

			    struct jffs2_eraseblock *jeb)

{

	spin_lock(&c->erase_completion_lock);

	jffs2_dbg_acct_sanity_check_nolock(c, jeb);

	spin_unlock(&c->erase_completion_lock);

}

#else

#define jffs2_dbg_acct_sanity_check(c, jeb)

#define jffs2_dbg_acct_sanity_check_nolock(c, jeb)

#endif /* !JFFS2_DBG_SANITY_CHECKS */



#endif /* _JFFS2_DEBUG_H_ */

fs/jffs2/erase.c

+5 −4
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ 
 *

 * For licensing information, see the file 'LICENCE' in this directory.

 *

 * $Id: erase.c,v 1.81 2005/07/17 06:56:20 dedekind Exp $

 * $Id: erase.c,v 1.83 2005/07/22 10:32:08 dedekind Exp $

 *

 */
@@ -48,7 +48,8 @@ static void jffs2_erase_block(struct jffs2_sb_info *c, 
#else /* Linux */

	struct erase_info *instr;



	D1(printk(KERN_DEBUG "jffs2_erase_block(): erase block %#x (range %#x-%#x)\n", jeb->offset, jeb->offset, jeb->offset + c->sector_size));

	D1(printk(KERN_DEBUG "jffs2_erase_block(): erase block %#08x (range %#08x-%#08x)\n",

				jeb->offset, jeb->offset, jeb->offset + c->sector_size));

	instr = kmalloc(sizeof(struct erase_info) + sizeof(struct erase_priv_struct), GFP_KERNEL);

	if (!instr) {

		printk(KERN_WARNING "kmalloc for struct erase_info in jffs2_erase_block failed. Refiling block for later\n");
@@ -429,8 +430,8 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb 
	c->free_size += jeb->free_size;

	c->used_size += jeb->used_size;



	jffs2_dbg_acct_sanity_check(c,jeb);

	jffs2_dbg_acct_paranoia_check(c, jeb);

	jffs2_dbg_acct_sanity_check_nolock(c,jeb);

	jffs2_dbg_acct_paranoia_check_nolock(c, jeb);



	list_add_tail(&jeb->list, &c->free_list);

	c->nr_erasing_blocks--;

fs/jffs2/fs.c

+2 −6
Original line number Diff line number Diff line
@@ -7,7 +7,7 @@ 
 *

 * For licensing information, see the file 'LICENCE' in this directory.

 *

 * $Id: fs.c,v 1.59 2005/07/18 11:21:19 dedekind Exp $

 * $Id: fs.c,v 1.60 2005/07/22 10:32:08 dedekind Exp $

 *

 */
@@ -194,19 +194,15 @@ int jffs2_statfs(struct super_block *sb, struct kstatfs *buf) 
	buf->f_namelen = JFFS2_MAX_NAME_LEN;



	spin_lock(&c->erase_completion_lock);



	avail = c->dirty_size + c->free_size;

	if (avail > c->sector_size * c->resv_blocks_write)

		avail -= c->sector_size * c->resv_blocks_write;

	else

		avail = 0;

	spin_unlock(&c->erase_completion_lock);



	buf->f_bavail = buf->f_bfree = avail >> PAGE_SHIFT;



	jffs2_dbg_dump_block_lists(c);



	spin_unlock(&c->erase_completion_lock);



	return 0;

}