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UBIFS: add debugfs support

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We need to have a possibility to see various UBIFS variables
and ask UBIFS to dump various information. Debugfs is what
we need.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy
2008-10-23 11:49:28 +03:00
parent 17c2f9f85c
commit 552ff3179d
4 changed files with 193 additions and 20 deletions
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12
fs/ubifs/super.c
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@@ -1258,6 +1258,10 @@ static int mount_ubifs(struct ubifs_info *c)
}
}
err = dbg_debugfs_init_fs(c);
if (err)
goto out_infos;
err = dbg_check_filesystem(c);
if (err)
goto out_infos;
@@ -1369,6 +1373,7 @@ static void ubifs_umount(struct ubifs_info *c)
dbg_gen("un-mounting UBI device %d, volume %d", c->vi.ubi_num,
c->vi.vol_id);
dbg_debugfs_exit_fs(c);
spin_lock(&ubifs_infos_lock);
list_del(&c->infos_list);
spin_unlock(&ubifs_infos_lock);
@@ -2078,12 +2083,18 @@ static int __init ubifs_init(void)
register_shrinker(&ubifs_shrinker_info);
err = ubifs_compressors_init();
if (err)
goto out_shrinker;
err = dbg_debugfs_init();
if (err)
goto out_compr;
return 0;
out_compr:
ubifs_compressors_exit();
out_shrinker:
unregister_shrinker(&ubifs_shrinker_info);
kmem_cache_destroy(ubifs_inode_slab);
out_reg:
@@ -2098,6 +2109,7 @@ static void __exit ubifs_exit(void)
ubifs_assert(list_empty(&ubifs_infos));
ubifs_assert(atomic_long_read(&ubifs_clean_zn_cnt) == 0);
dbg_debugfs_exit();
ubifs_compressors_exit();
unregister_shrinker(&ubifs_shrinker_info);
kmem_cache_destroy(ubifs_inode_slab);