#ifndef _OBD_SUPPORT
#define _OBD_SUPPORT
#include <linux/malloc.h>
#include <linux/vmalloc.h>

#define MIN(a,b) (((a)<(b)) ? (a): (b))
#define MAX(a,b) (((a)>(b)) ? (a): (b))

/*
 * Debug code
 */
/* global variables */
extern int obd_debug_level;
extern int obd_print_entry;
extern int obd_inodes;
extern int obd_pages;
extern long obd_memory;

#define EXT2_OBD_DEBUG

#ifdef EXT2_OBD_DEBUG
#define CMD(cmd) (( cmd == READ ) ? "read" : "write")

/* debugging masks */
#define D_PSDEV   0x001	/* debug information from psdev.c */
#define D_INODE   0x002
#define D_SUPER   0x004
#define D_SNAP    0x008
#define D_UNUSED4 0x010
#define D_WARNING 0x020	/* misc warnings */
#define D_EXT2    0x040	/* anything from ext2_debug */
#define D_MALLOC  0x080	/* print malloc, free information */
#define D_CACHE   0x100	/* cache-related items */
#define D_INFO    0x200	/* general information, especially from interface.c */
#define D_IOCTL   0x400	/* ioctl related information */
#define D_BLOCKS  0x800	/* ext2 block allocation */
#define D_RPC    0x1000	/* rpc communications */
#define D_PUNCH  0x2000
 
#define CDEBUG(mask, format, a...)                                      \
	do {                                                            \
	if (obd_debug_level & mask) {                                   \
		printk("(%s:%d):", __FUNCTION__, __LINE__);             \
		printk(format, ## a); }                                 \
	} while (0)

#define ENTRY if (obd_print_entry) \
	printk(KERN_INFO "Process %d entered %s\n", current->pid, __FUNCTION__)

#define EXIT if (obd_print_entry) \
	printk(KERN_INFO "Process %d leaving %s [%d]\n", current->pid,\
	       __FUNCTION__, __LINE__)

/* Inode common information printed out (used by obdfs and ext2obd inodes) */
#define ICDEBUG(inode) { \
	CDEBUG(D_INFO, "]]%s line %d[[ ino %ld, atm %ld, mtm %ld, ctm %ld, "\
	       "size %Ld, blocks %ld\n", __FUNCTION__ , __LINE__,\
	       inode->i_ino, inode->i_atime, inode->i_mtime, inode->i_ctime,\
	       inode->i_size, inode->i_blocks);\
	CDEBUG(D_INFO,\
	       "]]%s line %d[[ mode %o, uid %d, gid %d, nlnk %d, count %d\n",\
	       __FUNCTION__, __LINE__, inode->i_mode, inode->i_uid,\
	       inode->i_gid, inode->i_nlink, inode->i_count);\
}

/* Ext2 inode information */
#define EXDEBUG(inode) { \
	ICDEBUG(inode);\
	CDEBUG(D_INFO, "ext2 blocks: %d %d %d %d %d %d %d %d\n",\
	       inode->u.ext2_i.i_data[0], inode->u.ext2_i.i_data[1],\
	       inode->u.ext2_i.i_data[2], inode->u.ext2_i.i_data[3],\
	       inode->u.ext2_i.i_data[4], inode->u.ext2_i.i_data[5],\
	       inode->u.ext2_i.i_data[6], inode->u.ext2_i.i_data[7]);\
}

/* OBDFS inode information */
#define OIDEBUG(inode) { \
	ICDEBUG(inode);\
	CDEBUG(D_INFO,"oinfo: flags 0x%08x\n", obdfs_i2info(inode)->oi_flags);\
	/* obdfs_print_plist(inode); */\
}

#define ODEBUG(obdo) { \
	CDEBUG(D_INFO, "]]%s line %d[[  id %ld, atm %ld, mtm %ld, ctm %ld, "\
	       "size %ld, blocks %ld\n", __FUNCTION__ , __LINE__,\
	       (long)(obdo)->o_id, (long)(obdo)->o_atime,\
	       (long)(obdo)->o_mtime, (long)(obdo)->o_ctime,\
	       (long)(obdo)->o_size, (long)(obdo)->o_blocks);\
	CDEBUG(D_INFO, "]]%s line %d[[  mode %o, uid %d, gid %d, flg 0x%0x, "\
	       "obdflg 0x%0x, nlnk %d, valid 0x%0x\n", __FUNCTION__ , __LINE__,\
	       (obdo)->o_mode, (obdo)->o_uid, (obdo)->o_gid, (obdo)->o_flags,\
	       (obdo)->o_obdflags, (obdo)->o_nlink, (obdo)->o_valid);\
}


#define PDEBUG(page,msg) { \
	if (page){\
		char *uptodate = (Page_Uptodate(page)) ? "upto" : "outof";\
		char *locked = (PageLocked(page)) ? "" : "un";\
		char *buffer = page->buffers ? "buffer" : "";\
		int count = page_count(page);\
		long index = page->index;\
		CDEBUG(D_CACHE, "%s: ** off %ld, %sdate, %slocked, flag %ld,"\
		       " cnt %d page 0x%p pages %ld virt %lx %s**\n",\
		       msg, index, uptodate, locked, page->flags, count,\
		       page, page->mapping ? page->mapping->nrpages : -1,\
		       page->virtual, buffer);\
	} else \
		CDEBUG(D_CACHE, "** %s: no page\n", msg);\
}

#if 0
#define iget(sb, ino) obd_iget(sb, ino)
#define iput(sb, ino) obd_iput(sb, ino)

static inline struct inode *obd_iget(struct super_block *sb, unsigned long ino)
{
	struct inode *inode;
	
	if ((inode = iget(sb, ino)) == NULL)
		CDEBUG(D_INODE, "NULL in iget for %ld\n", ino);
	else
		obd_inodes++;
	return inode;
}

static inline void obd_iput(struct inode *inode)
{
	if (inode == NULL)
		CDEBUG(D_INODE, "NULL in iput\n");
	else
		obd_inodes--;
}
#endif

#else /* EXT2_OBD_DEBUG */

#define CDEBUG(mask, format, a...) {}
#define ENTRY {}
#define EXIT {}
#define ODEBUG(obdo) {}
#define EXDEBUG(inode) {}
#define OIDEBUG(inode) {}
#define PDEBUG(page, cmd) {}

#endif /* EXT2_OBD_DEBUG */



#define OBD_ALLOC(ptr, cast, size)					\
do {									\
	if (size <= 4096) {						\
		ptr = (cast)kmalloc((unsigned long) size, GFP_KERNEL);	\
                CDEBUG(D_MALLOC, "kmalloced: %d at %x.\n",		\
		       (int) size, (int) ptr);				\
	} else {							\
		ptr = (cast)vmalloc((unsigned long) size);		\
		CDEBUG(D_MALLOC, "vmalloced: %d at %x.\n",		\
		       (int) size, (int) ptr);				\
	}								\
	if (ptr == 0) {							\
		printk("kernel malloc returns 0 at %s:%d\n",		\
		       __FILE__, __LINE__);				\
	} else {							\
		memset(ptr, 0, size);					\
		obd_memory += size;					\
	}								\
} while (0)

#define OBD_FREE(ptr,size)				\
do {							\
	if (size <= 4096) {				\
		kfree_s((ptr), (size));			\
		CDEBUG(D_MALLOC, "kfreed: %d at %x.\n",	\
		       (int) size, (int) ptr);		\
	} else {					\
		vfree((ptr));				\
		CDEBUG(D_MALLOC, "vfreed: %d at %x.\n",	\
		       (int) size, (int) ptr);		\
	}						\
	obd_memory -= size;				\
} while (0)



#endif