UBIFS: switch to dynamic printks
Switch to debugging using dynamic printk (pr_debug()). There is no good reason to carry custom debugging prints if there is so cool and powerful generic dynamic printk infrastructure, see Documentation/dynamic-debug-howto.txt. With dynamic printks we can switch on/of individual prints, per-file, per-function and per format messages. This means that instead of doing old-fashioned echo 1 > /sys/module/ubifs/parameters/debug_msgs to enable general messages, we can do: echo 'format "UBIFS DBG gen" +ptlf' > control to enable general messages and additionally ask the dynamic printk infrastructure to print process ID, line number and function name. So there is no reason to keep UBIFS-specific crud if there is more powerful generic thing. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
This commit is contained in:
Artem Bityutskiy
parent
bdc1a1b610
commit
56e46742e8
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@ -115,28 +115,8 @@ ubi.mtd=0 root=ubi0:rootfs rootfstype=ubifs
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Module Parameters for Debugging
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===============================
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When UBIFS has been compiled with debugging enabled, there are 3 module
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When UBIFS has been compiled with debugging enabled, there are 2 module
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parameters that are available to control aspects of testing and debugging.
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The parameters are unsigned integers where each bit controls an option.
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The parameters are:
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debug_msgs Selects which debug messages to display, as follows:
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Message Type Flag value
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General messages 1
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Journal messages 2
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Mount messages 4
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Commit messages 8
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LEB search messages 16
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Budgeting messages 32
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Garbage collection messages 64
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Tree Node Cache (TNC) messages 128
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LEB properties (lprops) messages 256
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Input/output messages 512
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Log messages 1024
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Scan messages 2048
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Recovery messages 4096
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debug_chks Selects extra checks that UBIFS can do while running:
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@ -156,8 +136,7 @@ debug_tsts Selects a mode of testing, as follows:
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Failure mode for recovery testing 4
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For example, set debug_msgs to 5 to display General messages and Mount
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messages.
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For example, set debug_chks to 3 to enable general and TNC checks.
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References
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@ -42,15 +42,12 @@ DEFINE_SPINLOCK(dbg_lock);
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static char dbg_key_buf0[128];
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static char dbg_key_buf1[128];
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unsigned int ubifs_msg_flags;
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unsigned int ubifs_chk_flags;
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unsigned int ubifs_tst_flags;
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module_param_named(debug_msgs, ubifs_msg_flags, uint, S_IRUGO | S_IWUSR);
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module_param_named(debug_chks, ubifs_chk_flags, uint, S_IRUGO | S_IWUSR);
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module_param_named(debug_tsts, ubifs_tst_flags, uint, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug_msgs, "Debug message type flags");
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MODULE_PARM_DESC(debug_chks, "Debug check flags");
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MODULE_PARM_DESC(debug_tsts, "Debug special test flags");
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132
fs/ubifs/debug.h
132
fs/ubifs/debug.h
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@ -109,19 +109,6 @@ struct ubifs_debug_info {
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#define dbg_dump_stack() dump_stack()
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/* Generic debugging messages */
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#define dbg_msg(fmt, ...) do { \
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spin_lock(&dbg_lock); \
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printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", current->pid, \
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__func__, ##__VA_ARGS__); \
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spin_unlock(&dbg_lock); \
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} while (0)
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#define dbg_do_msg(typ, fmt, ...) do { \
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if (ubifs_msg_flags & typ) \
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dbg_msg(fmt, ##__VA_ARGS__); \
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} while (0)
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#define dbg_err(fmt, ...) do { \
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spin_lock(&dbg_lock); \
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ubifs_err(fmt, ##__VA_ARGS__); \
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@ -140,77 +127,40 @@ const char *dbg_key_str1(const struct ubifs_info *c,
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#define DBGKEY(key) dbg_key_str0(c, (key))
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#define DBGKEY1(key) dbg_key_str1(c, (key))
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#define ubifs_dbg_msg(type, fmt, ...) do { \
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spin_lock(&dbg_lock); \
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pr_debug("UBIFS DBG " type ": " fmt "\n", ##__VA_ARGS__); \
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spin_unlock(&dbg_lock); \
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} while (0)
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/* Just a debugging messages not related to any specific UBIFS subsystem */
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#define dbg_msg(fmt, ...) ubifs_dbg_msg("msg", fmt, ##__VA_ARGS__)
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/* General messages */
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#define dbg_gen(fmt, ...) dbg_do_msg(UBIFS_MSG_GEN, fmt, ##__VA_ARGS__)
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#define dbg_gen(fmt, ...) ubifs_dbg_msg("gen", fmt, ##__VA_ARGS__)
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/* Additional journal messages */
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#define dbg_jnl(fmt, ...) dbg_do_msg(UBIFS_MSG_JNL, fmt, ##__VA_ARGS__)
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#define dbg_jnl(fmt, ...) ubifs_dbg_msg("jnl", fmt, ##__VA_ARGS__)
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/* Additional TNC messages */
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#define dbg_tnc(fmt, ...) dbg_do_msg(UBIFS_MSG_TNC, fmt, ##__VA_ARGS__)
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#define dbg_tnc(fmt, ...) ubifs_dbg_msg("tnc", fmt, ##__VA_ARGS__)
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/* Additional lprops messages */
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#define dbg_lp(fmt, ...) dbg_do_msg(UBIFS_MSG_LP, fmt, ##__VA_ARGS__)
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#define dbg_lp(fmt, ...) ubifs_dbg_msg("lp", fmt, ##__VA_ARGS__)
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/* Additional LEB find messages */
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#define dbg_find(fmt, ...) dbg_do_msg(UBIFS_MSG_FIND, fmt, ##__VA_ARGS__)
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#define dbg_find(fmt, ...) ubifs_dbg_msg("find", fmt, ##__VA_ARGS__)
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/* Additional mount messages */
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#define dbg_mnt(fmt, ...) dbg_do_msg(UBIFS_MSG_MNT, fmt, ##__VA_ARGS__)
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#define dbg_mnt(fmt, ...) ubifs_dbg_msg("mnt", fmt, ##__VA_ARGS__)
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/* Additional I/O messages */
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#define dbg_io(fmt, ...) dbg_do_msg(UBIFS_MSG_IO, fmt, ##__VA_ARGS__)
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#define dbg_io(fmt, ...) ubifs_dbg_msg("io", fmt, ##__VA_ARGS__)
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/* Additional commit messages */
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#define dbg_cmt(fmt, ...) dbg_do_msg(UBIFS_MSG_CMT, fmt, ##__VA_ARGS__)
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#define dbg_cmt(fmt, ...) ubifs_dbg_msg("cmt", fmt, ##__VA_ARGS__)
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/* Additional budgeting messages */
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#define dbg_budg(fmt, ...) dbg_do_msg(UBIFS_MSG_BUDG, fmt, ##__VA_ARGS__)
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#define dbg_budg(fmt, ...) ubifs_dbg_msg("budg", fmt, ##__VA_ARGS__)
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/* Additional log messages */
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#define dbg_log(fmt, ...) dbg_do_msg(UBIFS_MSG_LOG, fmt, ##__VA_ARGS__)
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#define dbg_log(fmt, ...) ubifs_dbg_msg("log", fmt, ##__VA_ARGS__)
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/* Additional gc messages */
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#define dbg_gc(fmt, ...) dbg_do_msg(UBIFS_MSG_GC, fmt, ##__VA_ARGS__)
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#define dbg_gc(fmt, ...) ubifs_dbg_msg("gc", fmt, ##__VA_ARGS__)
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/* Additional scan messages */
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#define dbg_scan(fmt, ...) dbg_do_msg(UBIFS_MSG_SCAN, fmt, ##__VA_ARGS__)
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#define dbg_scan(fmt, ...) ubifs_dbg_msg("scan", fmt, ##__VA_ARGS__)
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/* Additional recovery messages */
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#define dbg_rcvry(fmt, ...) dbg_do_msg(UBIFS_MSG_RCVRY, fmt, ##__VA_ARGS__)
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/*
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* Debugging message type flags.
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*
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* UBIFS_MSG_GEN: general messages
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* UBIFS_MSG_JNL: journal messages
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* UBIFS_MSG_MNT: mount messages
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* UBIFS_MSG_CMT: commit messages
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* UBIFS_MSG_FIND: LEB find messages
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* UBIFS_MSG_BUDG: budgeting messages
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* UBIFS_MSG_GC: garbage collection messages
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* UBIFS_MSG_TNC: TNC messages
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* UBIFS_MSG_LP: lprops messages
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* UBIFS_MSG_IO: I/O messages
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* UBIFS_MSG_LOG: log messages
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* UBIFS_MSG_SCAN: scan messages
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* UBIFS_MSG_RCVRY: recovery messages
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*/
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enum {
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UBIFS_MSG_GEN = 0x1,
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UBIFS_MSG_JNL = 0x2,
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UBIFS_MSG_MNT = 0x4,
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UBIFS_MSG_CMT = 0x8,
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UBIFS_MSG_FIND = 0x10,
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UBIFS_MSG_BUDG = 0x20,
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UBIFS_MSG_GC = 0x40,
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UBIFS_MSG_TNC = 0x80,
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UBIFS_MSG_LP = 0x100,
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UBIFS_MSG_IO = 0x200,
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UBIFS_MSG_LOG = 0x400,
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UBIFS_MSG_SCAN = 0x800,
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UBIFS_MSG_RCVRY = 0x1000,
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};
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#define dbg_rcvry(fmt, ...) ubifs_dbg_msg("rcvry", fmt, ##__VA_ARGS__)
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/*
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* Debugging check flags.
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@ -368,33 +318,33 @@ void dbg_debugfs_exit_fs(struct ubifs_info *c);
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__func__, __LINE__, current->pid); \
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} while (0)
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#define dbg_err(fmt, ...) do { \
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if (0) \
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ubifs_err(fmt, ##__VA_ARGS__); \
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#define dbg_err(fmt, ...) do { \
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if (0) \
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ubifs_err(fmt, ##__VA_ARGS__); \
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} while (0)
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#define dbg_msg(fmt, ...) do { \
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if (0) \
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printk(KERN_DEBUG "UBIFS DBG (pid %d): %s: " fmt "\n", \
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current->pid, __func__, ##__VA_ARGS__); \
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#define ubifs_dbg_msg(fmt, ...) do { \
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if (0) \
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pr_debug(fmt "\n", ##__VA_ARGS__); \
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} while (0)
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#define dbg_dump_stack()
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#define ubifs_assert_cmt_locked(c)
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#define dbg_gen(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_jnl(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_tnc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_lp(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_find(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_mnt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_io(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_cmt(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_budg(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_log(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_gc(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_scan(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_rcvry(fmt, ...) dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_msg(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_gen(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_jnl(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_tnc(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_lp(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_find(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_mnt(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_io(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_cmt(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_budg(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_log(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_gc(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_scan(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define dbg_rcvry(fmt, ...) ubifs_dbg_msg(fmt, ##__VA_ARGS__)
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#define DBGKEY(key) ((char *)(key))
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#define DBGKEY1(key) ((char *)(key))
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