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* UBIFS: make debugging messages light againArtem Bityutskiy2012-01-251-7/+5
| | | | | | | | | | | | | | | | | | | | | commit 1f5d78dc4823a85f112aaa2d0f17624f8c2a6c52 upstream. We switch to dynamic debugging in commit 56e46742e846e4de167dde0e1e1071ace1c882a5 but did not take into account that now we do not control anymore whether a specific message is enabled or not. So now we lock the "dbg_lock" and release it in every debugging macro, which make them not so light-weight. This commit removes the "dbg_lock" protection from the debugging macros to fix the issue. The downside is that now our DBGKEY() stuff is broken, but this is not critical at all and will be fixed later. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* UBIFS: fix debugging messagesArtem Bityutskiy2012-01-251-1/+4
| | | | | | | | | | | | | | | | | commit d34315da9146253351146140ea4b277193ee5e5f upstream. Patch 56e46742e846e4de167dde0e1e1071ace1c882a5 broke UBIFS debugging messages: before that commit when UBIFS debugging was enabled, users saw few useful debugging messages after mount. However, that patch turned 'dbg_msg()' into 'pr_debug()', so to enable the debugging messages users have to enable them first via /sys/kernel/debug/dynamic_debug/control, which is very impractical. This commit makes 'dbg_msg()' to use 'printk()' instead of 'pr_debug()', just as it was before the breakage. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* UBIFS: switch to dynamic printksArtem Bityutskiy2011-05-231-91/+41
| | | | | | | | | | | | | | | | | | | | 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>
* UBIFS: fix kernel-doc commentsArtem Bityutskiy2011-05-201-5/+5
| | | | | | | This is a minor fix for UBIFS kernel-doc comments - we forgot the "@" symbol for several 'struct ubifs_debug_info'. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: dump the stack on errors in failure mode tooArtem Bityutskiy2011-05-131-4/+1
| | | | | | | | | | | | When UBIFS is in the failure mode (used for power cut emulation testing) we for some reasons do not dump the stack in many places, e.g., in assertions. Probably at early days we had too many of them and disabled this to make the development easier, but then never enabled. Nowadays I sometimes observe assertion failures during power cut testing, but the useful stackdump is not printed, which is bad. This patch makes UBIFS always print the stackdump when debugging is enabled. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: make force in-the-gaps to be a general self-checkArtem Bityutskiy2011-05-131-11/+8
| | | | | | | | | | | | UBIFS can force itself to use the 'in-the-gaps' commit method - the last resort method which is normally invoced very very rarely. Currently this "force int-the-gaps" debugging feature is a separate test mode. But it is a bit saner to make it to be the "general" self-test check instead. This patch is just a clean-up which should make the debugging code look a bit nicer and easier to use - we have way too many debugging options. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: improve space checking debugging featureArtem Bityutskiy2011-05-131-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch improves the 'dbg_check_space_info()' function which checks whether the amount of space before re-mounting and after re-mounting is the same (remounting from R/O to R/W modes and vice-versa). The problem is that 'dbg_check_space_info()' does not save the budgeting information before re-mounting, so when an error is reported, we do not know why the amount of free space changed. This patches makes the following changes: 1. Teaches 'dbg_dump_budg()' function to accept a 'struct ubifs_budg_info' argument and print out the this argument. This way we may ask it to print any saved budgeting info, no only the current one. 2. Accordingly changes all the callers of 'dbg_dump_budg()' to comply with the changed interface. 3. Introduce a 'saved_bi' (saved budgeting info) field to 'struct ubifs_debug_info' and save the budgeting info before re-mounting there. 4. Change 'dbg_check_space_info()' and make it print both old and new budgeting information. 5. Additionally, save 'c->igx_gc_cnt' and print it if and error happens. This value contributes to the amount of free space, so we have to print it. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: fix compilation warnings when compiling with gcc 4.5Maksim Rayskiy2011-04-131-58/+94
| | | | | | | | | | | | | | When compiling UBIFS with CONFIG_UBIFS_FS_DEBUG not set, gcc-4.5.2 generates a slew of "warning: statement with no effect" on references to non-void functions defined as 0. To avoid these warnings, replace #defines with dummy inline functions. Artem: massage the patch a bit, also remove the duplicate 'dbg_check_lprops()' prototype. Signed-off-by: Maksim Rayskiy <maksim.rayskiy@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: clean-up commentariesArtem Bityutskiy2011-03-161-3/+3
| | | | | | | Clean-up commentaries in debug.h and remove references to non-existing symblols. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: save 128KiB or more RAMArtem Bityutskiy2011-03-161-2/+0
| | | | | | | | When debugging is enabled, we allocate a buffer of PEB size for various debugging purposes. However, now all users of this buffer are gone and we can safely remove it and save 128KiB or more RAM. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: simplify UBIFS Kconfig menuArtem Bityutskiy2011-03-111-22/+0
| | | | | | | | | 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>
* UBIFS: introduce list sorting debugging checksArtem Bityutskiy2010-08-301-0/+4
| | | | | | | | | | | | | | | The UBIFS bug in the GC list sorting comparison functions inspired me to write internal debugging check functions which verify that the list of nodes is sorted properly. So, this patch implements 2 new debugging functions: o 'dbg_check_data_nodes_order()' - check order of data nodes list o 'dbg_check_nondata_nodes_order()' - check order of non-data nodes list The debugging functions are executed only if general UBIFS debugging checks are enabled. And they are compiled out if UBIFS debugging is disabled. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: improve journal head debugging printsArtem Bityutskiy2009-09-151-0/+2
| | | | | | | Convert the journal head integer into the head name when printing debugging information. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: add inode size debugging checkArtem Bityutskiy2009-09-101-0/+3
| | | | | | | | | Add one more check to UBIFS - a check that makes sure that there are no data nodes beyond inode size. And few commantaries fixes along the line. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
* UBIFS: add re-mount debugging checksArtem Bityutskiy2009-01-261-14/+22
| | | | | | | We observe space corrupted accounting when re-mounting. So add some debbugging checks to catch problems like this. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: introduce LPT dump functionArtem Bityutskiy2008-12-031-20/+25
| | | | Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: add debugfs supportArtem Bityutskiy2008-12-031-3/+24
| | | | | | | | 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>
* UBIFS: separate debugging fields outArtem Bityutskiy2008-12-031-8/+43
| | | | | | | | Introduce a new data structure which contains all debugging stuff inside. This is cleaner than having debugging stuff directly in 'c'. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: add more debugging messages for LPTAdrian Hunter2008-09-301-0/+6
| | | | | | | Also add debugging checks for LPT size and separate out c->check_lpt_free from unrelated bitfields. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: improve arguments checking in debugging messagesArtem Bityutskiy2008-08-131-74/+69
| | | | | | | | | | Use "if (0) printk()" construct in debugging print macros to make the debugging messages be checked even if debugging is off. This patch also removes some unneeded spaces and blank lines. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: add new flash file systemArtem Bityutskiy2008-07-151-0/+403
This is a new flash file system. See http://www.linux-mtd.infradead.org/doc/ubifs.html Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
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