From 56e46742e846e4de167dde0e1e1071ace1c882a5 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Tue, 17 May 2011 15:15:30 +0300 Subject: 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 --- Documentation/filesystems/ubifs.txt | 25 ++----------------------- 1 file changed, 2 insertions(+), 23 deletions(-) (limited to 'Documentation/filesystems') diff --git a/Documentation/filesystems/ubifs.txt b/Documentation/filesystems/ubifs.txt index 7d17e5b91ff4..8e4fab639d9c 100644 --- a/Documentation/filesystems/ubifs.txt +++ b/Documentation/filesystems/ubifs.txt @@ -115,28 +115,8 @@ ubi.mtd=0 root=ubi0:rootfs rootfstype=ubifs Module Parameters for Debugging =============================== -When UBIFS has been compiled with debugging enabled, there are 3 module +When UBIFS has been compiled with debugging enabled, there are 2 module parameters that are available to control aspects of testing and debugging. -The parameters are unsigned integers where each bit controls an option. -The parameters are: - -debug_msgs Selects which debug messages to display, as follows: - - Message Type Flag value - - General messages 1 - Journal messages 2 - Mount messages 4 - Commit messages 8 - LEB search messages 16 - Budgeting messages 32 - Garbage collection messages 64 - Tree Node Cache (TNC) messages 128 - LEB properties (lprops) messages 256 - Input/output messages 512 - Log messages 1024 - Scan messages 2048 - Recovery messages 4096 debug_chks Selects extra checks that UBIFS can do while running: @@ -156,8 +136,7 @@ debug_tsts Selects a mode of testing, as follows: Failure mode for recovery testing 4 -For example, set debug_msgs to 5 to display General messages and Mount -messages. +For example, set debug_chks to 3 to enable general and TNC checks. References -- cgit v1.2.3