UBIFS: simplify UBIFS Kconfig menu

Remove debug message level and debug checks Kconfig options as they
proved to be useless anyway. We have sysfs interface which we can
use for fine-grained debugging messages and checks selection, see
Documentation/filesystems/ubifs.txt for mode details.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

diff --git a/fs/ubifs/Kconfig b/fs/ubifs/Kconfig
index 830e3f7..1d1859d 100644 (file)
--- a/fs/ubifs/Kconfig
+++ b/fs/ubifs/Kconfig
@@ -44,23 +44,20 @@ config UBIFS_FS_ZLIB
 
 # Debugging-related stuff
 config UBIFS_FS_DEBUG
-       bool "Enable debugging"
+       bool "Enable debugging support"
        depends on UBIFS_FS
        select DEBUG_FS
        select KALLSYMS_ALL
        help
-         This option enables UBIFS debugging.
-
-config UBIFS_FS_DEBUG_MSG_LVL
-       int "Default message level (0 = no extra messages, 3 = lots)"
-       depends on UBIFS_FS_DEBUG
-       default "0"
-       help
-         This controls the amount of debugging messages produced by UBIFS.
-         If reporting bugs, please try to have available a full dump of the
-         messages at level 1 while the misbehaviour was occurring. Level 2
-         may become necessary if level 1 messages were not enough to find the
-         bug. Generally Level 3 should be avoided.
+         This option enables UBIFS debugging support. It makes sure various
+         assertions, self-checks, debugging messages and test modes are compiled
+         in (this all is compiled out otherwise). Assertions are light-weight
+         and this option also enables them. Self-checks, debugging messages and
+         test modes are switched off by default. Thus, it is safe and actually
+         recommended to have debugging support enabled, and it should not slow
+         down UBIFS. You can then further enable / disable individual  debugging
+         features using UBIFS module parameters and the corresponding sysfs
+         interfaces.
 
 config UBIFS_FS_DEBUG_CHKS
        bool "Enable extra checks"

diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index bcb1acb..02c10dc 100644 (file)
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -43,8 +43,8 @@ DEFINE_SPINLOCK(dbg_lock);
 static char dbg_key_buf0[128];
 static char dbg_key_buf1[128];
 
-unsigned int ubifs_msg_flags = UBIFS_MSG_FLAGS_DEFAULT;
-unsigned int ubifs_chk_flags = UBIFS_CHK_FLAGS_DEFAULT;
+unsigned int ubifs_msg_flags;
+unsigned int ubifs_chk_flags;
 unsigned int ubifs_tst_flags;
 
 module_param_named(debug_msgs, ubifs_msg_flags, uint, S_IRUGO | S_IWUSR);

diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index 69ebe47..10190c1 100644 (file)
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -205,12 +205,6 @@ enum {
        UBIFS_MSG_RCVRY = 0x1000,
 };
 
-/* Debugging message type flags for each default debug message level */
-#define UBIFS_MSG_LVL_0 0
-#define UBIFS_MSG_LVL_1 0x1
-#define UBIFS_MSG_LVL_2 0x7f
-#define UBIFS_MSG_LVL_3 0xffff
-
 /*
  * Debugging check flags (must match chk_names in debug.c).
  *
@@ -243,22 +237,6 @@ enum {
        UBIFS_TST_RCVRY             = 0x4,
 };
 
-#if CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 1
-#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_1
-#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 2
-#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_2
-#elif CONFIG_UBIFS_FS_DEBUG_MSG_LVL == 3
-#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_3
-#else
-#define UBIFS_MSG_FLAGS_DEFAULT UBIFS_MSG_LVL_0
-#endif
-
-#ifdef CONFIG_UBIFS_FS_DEBUG_CHKS
-#define UBIFS_CHK_FLAGS_DEFAULT 0xffffffff
-#else
-#define UBIFS_CHK_FLAGS_DEFAULT 0
-#endif
-
 extern spinlock_t dbg_lock;
 
 extern unsigned int ubifs_msg_flags;