From 730554d94607572ef8300c5c9848540b42394897 Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Sun, 17 Jul 2005 07:56:26 +0100 Subject: [JFFS2] Debug code clean up - step 1 Move debug functions into a seperate source file Signed-off-by: Artem B. Bityutskiy Signed-off-by: Thomas Gleixner --- fs/jffs2/debug.c | 495 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 495 insertions(+) create mode 100644 fs/jffs2/debug.c (limited to 'fs/jffs2/debug.c') diff --git a/fs/jffs2/debug.c b/fs/jffs2/debug.c new file mode 100644 index 000000000000..9da524ca4e66 --- /dev/null +++ b/fs/jffs2/debug.c @@ -0,0 +1,495 @@ +/* + * JFFS2 -- Journalling Flash File System, Version 2. + * + * Copyright (C) 2001-2003 Red Hat, Inc. + * + * Created by David Woodhouse + * + * For licensing information, see the file 'LICENCE' in this directory. + * + * $Id: debug.c,v 1.1 2005/07/17 06:56:20 dedekind Exp $ + * + */ +#include +#include +#include "nodelist.h" +#include "debug.h" + +#ifdef JFFS2_DBG_PARANOIA_CHECKS + +void +jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f) +{ + struct jffs2_node_frag *frag; + int bitched = 0; + + for (frag = frag_first(&f->fragtree); frag; frag = frag_next(frag)) { + struct jffs2_full_dnode *fn = frag->node; + + if (!fn || !fn->raw) + continue; + + if (ref_flags(fn->raw) == REF_PRISTINE) { + if (fn->frags > 1) { + printk(KERN_ERR "REF_PRISTINE node at 0x%08x had %d frags. Tell dwmw2\n", + ref_offset(fn->raw), fn->frags); + bitched = 1; + } + + /* A hole node which isn't multi-page should be garbage-collected + and merged anyway, so we just check for the frag size here, + rather than mucking around with actually reading the node + and checking the compression type, which is the real way + to tell a hole node. */ + if (frag->ofs & (PAGE_CACHE_SIZE-1) && frag_prev(frag) + && frag_prev(frag)->size < PAGE_CACHE_SIZE && frag_prev(frag)->node) { + printk(KERN_ERR "REF_PRISTINE node at 0x%08x had a previous non-hole frag " + "in the same page. Tell dwmw2\n", ref_offset(fn->raw)); + bitched = 1; + } + + if ((frag->ofs+frag->size) & (PAGE_CACHE_SIZE-1) && frag_next(frag) + && frag_next(frag)->size < PAGE_CACHE_SIZE && frag_next(frag)->node) { + printk(KERN_ERR "REF_PRISTINE node at 0x%08x (%08x-%08x) had a following " + "non-hole frag in the same page. Tell dwmw2\n", + ref_offset(fn->raw), frag->ofs, frag->ofs+frag->size); + bitched = 1; + } + } + } + + if (bitched) { + printk(KERN_ERR "Fragtree is corrupted. Fragtree dump:\n"); + jffs2_dbg_dump_fragtree(f); + BUG(); + } +} + +/* + * Check if the flash contains all 0xFF before we start writing. + */ +void +jffs2_dbg_prewrite_paranoia_check(struct jffs2_sb_info *c, uint32_t ofs, int len) +{ + size_t retlen; + int ret, i; + unsigned char *buf; + + buf = kmalloc(len, GFP_KERNEL); + if (!buf) + return; + + ret = jffs2_flash_read(c, ofs, len, &retlen, buf); + if (ret || (retlen != len)) { + printk(KERN_WARNING "read %d bytes failed or short in %s(). ret %d, retlen %zd\n", + len, __FUNCTION__, ret, retlen); + kfree(buf); + return; + } + + ret = 0; + for (i = 0; i < len; i++) + if (buf[i] != 0xff) + ret = 1; + + if (ret) { + printk(KERN_ERR "ARGH. About to write node to %#08x on flash, but there are data " + "already there. The first corrupted byte is at %#08x.\n", ofs, ofs + i); + jffs2_dbg_dump_buffer(buf, len, ofs); + kfree(buf); + BUG(); + } + + kfree(buf); +} + +/* + * Check the space accounting and node_ref list correctness for the JFFS2 erasable block 'jeb'. + */ +void +jffs2_dbg_acct_paranoia_check(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb) +{ + uint32_t my_used_size = 0; + uint32_t my_unchecked_size = 0; + uint32_t my_dirty_size = 0; + struct jffs2_raw_node_ref *ref2 = jeb->first_node; + + while (ref2) { + uint32_t totlen = ref_totlen(c, jeb, ref2); + + if (ref2->flash_offset < jeb->offset || + ref2->flash_offset > jeb->offset + c->sector_size) { + printk(KERN_ERR "node_ref %#08x shouldn't be in block at %#08x!\n", + ref_offset(ref2), jeb->offset); + jffs2_dbg_dump_node_refs(c, jeb); + jffs2_dbg_dump_block_lists(c); + BUG(); + + } + if (ref_flags(ref2) == REF_UNCHECKED) + my_unchecked_size += totlen; + else if (!ref_obsolete(ref2)) + my_used_size += totlen; + else + my_dirty_size += totlen; + + if ((!ref2->next_phys) != (ref2 == jeb->last_node)) { + printk(KERN_ERR "node_ref for node at %#08x (mem %p) has next_phys at %#08x (mem %p), " + "last_node is at %#08x (mem %p)\n", + ref_offset(ref2), ref2, ref_offset(ref2->next_phys), ref2->next_phys, + ref_offset(jeb->last_node), jeb->last_node); + jffs2_dbg_dump_node_refs(c, jeb); + jffs2_dbg_dump_block_lists(c); + BUG(); + } + ref2 = ref2->next_phys; + } + + if (my_used_size != jeb->used_size) { + printk(KERN_ERR "Calculated used size %#08x != stored used size %#08x\n", + my_used_size, jeb->used_size); + jffs2_dbg_dump_node_refs(c, jeb); + jffs2_dbg_dump_block_lists(c); + BUG(); + } + + if (my_unchecked_size != jeb->unchecked_size) { + printk(KERN_ERR "Calculated unchecked size %#08x != stored unchecked size %#08x\n", + my_unchecked_size, jeb->unchecked_size); + jffs2_dbg_dump_node_refs(c, jeb); + jffs2_dbg_dump_block_lists(c); + BUG(); + } + + if (my_dirty_size != jeb->dirty_size + jeb->wasted_size) { + printk(KERN_ERR "Calculated dirty+wasted size %#08x != stored dirty + wasted size %#08x\n", + my_dirty_size, jeb->dirty_size + jeb->wasted_size); + jffs2_dbg_dump_node_refs(c, jeb); + jffs2_dbg_dump_block_lists(c); + BUG(); + } + + if (jeb->free_size == 0 + && my_used_size + my_unchecked_size + my_dirty_size != c->sector_size) { + printk(KERN_ERR "The sum of all nodes in block (%#x) != size of block (%#x)\n", + my_used_size + my_unchecked_size + my_dirty_size, + c->sector_size); + jffs2_dbg_dump_node_refs(c, jeb); + jffs2_dbg_dump_block_lists(c); + BUG(); + } +} +#endif /* JFFS2_PARANOIA_CHECKS */ + +#if defined(JFFS2_PARANOIA_CHECKS) || (CONFIG_JFFS2_FS_DEBUG > 0) +/* + * Dump the node_refs of the 'jeb' JFFS2 eraseblock. + */ +void +jffs2_dbg_dump_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb) +{ + struct jffs2_raw_node_ref *ref; + int i = 0; + + if (!jeb->first_node) { + printk(KERN_DEBUG "no nodes in block %#08x\n", jeb->offset); + return; + } + + printk(KERN_DEBUG); + for (ref = jeb->first_node; ; ref = ref->next_phys) { + printk("%#08x(%#x)", ref_offset(ref), ref->__totlen); + if (ref->next_phys) + printk("->"); + else + break; + if (++i == 4) { + i = 0; + printk("\n" KERN_DEBUG); + } + } + printk("\n"); +} + +void +jffs2_dbg_dump_block_lists(struct jffs2_sb_info *c) +{ + printk(KERN_DEBUG "flash_size: %#08x\n", c->flash_size); + printk(KERN_DEBUG "used_size: %#08x\n", c->used_size); + printk(KERN_DEBUG "dirty_size: %#08x\n", c->dirty_size); + printk(KERN_DEBUG "wasted_size: %#08x\n", c->wasted_size); + printk(KERN_DEBUG "unchecked_size: %#08x\n", c->unchecked_size); + printk(KERN_DEBUG "free_size: %#08x\n", c->free_size); + printk(KERN_DEBUG "erasing_size: %#08x\n", c->erasing_size); + printk(KERN_DEBUG "bad_size: %#08x\n", c->bad_size); + printk(KERN_DEBUG "sector_size: %#08x\n", c->sector_size); + printk(KERN_DEBUG "jffs2_reserved_blocks size: %#08x\n", + c->sector_size * c->resv_blocks_write); + + if (c->nextblock) + printk(KERN_DEBUG "nextblock: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + c->nextblock->offset, c->nextblock->used_size, + c->nextblock->dirty_size, c->nextblock->wasted_size, + c->nextblock->unchecked_size, c->nextblock->free_size); + else + printk(KERN_DEBUG "nextblock: NULL\n"); + + if (c->gcblock) + printk(KERN_DEBUG "gcblock: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + c->gcblock->offset, c->gcblock->used_size, c->gcblock->dirty_size, + c->gcblock->wasted_size, c->gcblock->unchecked_size, c->gcblock->free_size); + else + printk(KERN_DEBUG "gcblock: NULL\n"); + + if (list_empty(&c->clean_list)) { + printk(KERN_DEBUG "clean_list: empty\n"); + } else { + struct list_head *this; + int numblocks = 0; + uint32_t dirty = 0; + + list_for_each(this, &c->clean_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + numblocks ++; + dirty += jeb->wasted_size; + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "clean_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + + printk (KERN_DEBUG "Contains %d blocks with total wasted size %u, average wasted size: %u\n", + numblocks, dirty, dirty / numblocks); + } + + if (list_empty(&c->very_dirty_list)) { + printk(KERN_DEBUG "very_dirty_list: empty\n"); + } else { + struct list_head *this; + int numblocks = 0; + uint32_t dirty = 0; + + list_for_each(this, &c->very_dirty_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + numblocks ++; + dirty += jeb->dirty_size; + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "very_dirty_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + + printk (KERN_DEBUG "Contains %d blocks with total dirty size %u, average dirty size: %u\n", + numblocks, dirty, dirty / numblocks); + } + + if (list_empty(&c->dirty_list)) { + printk(KERN_DEBUG "dirty_list: empty\n"); + } else { + struct list_head *this; + int numblocks = 0; + uint32_t dirty = 0; + + list_for_each(this, &c->dirty_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + numblocks ++; + dirty += jeb->dirty_size; + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "dirty_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + + printk (KERN_DEBUG "Contains %d blocks with total dirty size %u, average dirty size: %u\n", + numblocks, dirty, dirty / numblocks); + } + + if (list_empty(&c->erasable_list)) { + printk(KERN_DEBUG "erasable_list: empty\n"); + } else { + struct list_head *this; + + list_for_each(this, &c->erasable_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "erasable_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + } + + if (list_empty(&c->erasing_list)) { + printk(KERN_DEBUG "erasing_list: empty\n"); + } else { + struct list_head *this; + + list_for_each(this, &c->erasing_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "erasing_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + } + + if (list_empty(&c->erase_pending_list)) { + printk(KERN_DEBUG "erase_pending_list: empty\n"); + } else { + struct list_head *this; + + list_for_each(this, &c->erase_pending_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "erase_pending_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + } + + if (list_empty(&c->erasable_pending_wbuf_list)) { + printk(KERN_DEBUG "erasable_pending_wbuf_list: empty\n"); + } else { + struct list_head *this; + + list_for_each(this, &c->erasable_pending_wbuf_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "erasable_pending_wbuf_list: %#08x (used %#08x, dirty %#08x, " + "wasted %#08x, unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + } + + if (list_empty(&c->free_list)) { + printk(KERN_DEBUG "free_list: empty\n"); + } else { + struct list_head *this; + + list_for_each(this, &c->free_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "free_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + } + + if (list_empty(&c->bad_list)) { + printk(KERN_DEBUG "bad_list: empty\n"); + } else { + struct list_head *this; + + list_for_each(this, &c->bad_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "bad_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + } + + if (list_empty(&c->bad_used_list)) { + printk(KERN_DEBUG "bad_used_list: empty\n"); + } else { + struct list_head *this; + + list_for_each(this, &c->bad_used_list) { + struct jffs2_eraseblock *jeb = list_entry(this, struct jffs2_eraseblock, list); + + if (!(jeb->used_size == 0 && jeb->dirty_size == 0 && jeb->wasted_size == 0)) { + printk(KERN_DEBUG "bad_used_list: %#08x (used %#08x, dirty %#08x, wasted %#08x, " + "unchecked %#08x, free %#08x)\n", + jeb->offset, jeb->used_size, jeb->dirty_size, jeb->wasted_size, + jeb->unchecked_size, jeb->free_size); + } + } + } +} + +void +jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f) +{ + struct jffs2_node_frag *this = frag_first(&f->fragtree); + uint32_t lastofs = 0; + int buggy = 0; + + printk(KERN_DEBUG "inode is ino #%u\n", f->inocache->ino); + while(this) { + if (this->node) + printk(KERN_DEBUG "frag %#04x-%#04x: %#08x(%d) on flash (*%p), left (%p), " + "right (%p), parent (%p)\n", + this->ofs, this->ofs+this->size, ref_offset(this->node->raw), + ref_flags(this->node->raw), this, frag_left(this), frag_right(this), + frag_parent(this)); + else + printk(KERN_DEBUG "frag %#04x-%#04x: hole (*%p). left (%p), right (%p), parent (%p)\n", + this->ofs, this->ofs+this->size, this, frag_left(this), + frag_right(this), frag_parent(this)); + if (this->ofs != lastofs) + buggy = 1; + lastofs = this->ofs + this->size; + this = frag_next(this); + } + + if (f->metadata) + printk(KERN_DEBUG "metadata at 0x%08x\n", ref_offset(f->metadata->raw)); + + if (buggy) { + printk(KERN_ERR "Error! %s(): Frag tree got a hole in it\n", __FUNCTION__); + BUG(); + } +} + +#define JFFS3_BUFDUMP_BYTES_PER_LINE 8 +void +jffs2_dbg_dump_buffer(char *buf, int len, uint32_t offs) +{ + int i = 0; + int skip = offs & ~(JFFS3_BUFDUMP_BYTES_PER_LINE - 1); + + while (i < len) { + int j = 0; + + printk(KERN_DEBUG "0x#x: \n"); + while (skip) { + printk(" "); + skip -= 1; + } + + while (j < JFFS3_BUFDUMP_BYTES_PER_LINE) { + if (i + j < len) + printk(" %#02x", buf[i + j++]); + } + + i += JFFS3_BUFDUMP_BYTES_PER_LINE; + } +} +#endif /* JFFS2_PARANOIA_CHECKS || CONFIG_JFFS2_FS_DEBUG > 0 */ -- cgit v1.2.3