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| author | Jim Cromie <jim.cromie@gmail.com> | 2011-12-19 17:12:44 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-24 12:48:52 -0800 |
| commit | 5ca7d2a6c5e4f24dfe39e8383c6d32e61d95d16a (patch) | |
| tree | 9825251f6cd4a7027e8235a73d6a6c8654a6afed /include/linux/dynamic_debug.h | |
| parent | d6a238d25014d0ff918410d73e2a6300bca5d1f1 (diff) | |
| download | lwn-5ca7d2a6c5e4f24dfe39e8383c6d32e61d95d16a.tar.gz lwn-5ca7d2a6c5e4f24dfe39e8383c6d32e61d95d16a.zip | |
dynamic_debug: describe_flags with '=[pmflt_]*'
Change describe_flags() to emit '=[pmflt_]+' for current callsite
flags, or just '=_' when they're disabled. Having '=' in output
allows a more selective grep expression; in contrast '-' may appear
in filenames, line-ranges, and format-strings. '=' also has better
mnemonics, saying; "the current setting is equal to <flags>".
This allows grep "=_" <dbgfs>/dynamic_debug/control to see disabled
callsites while avoiding the many occurrences of " = " seen in format
strings.
Enlarge flagsbufs to handle additional flag char, and alter
ddebug_parse_flags() to allow flags=0, so that user can turn off all
debug flags via:
~# echo =_ > <dbgfs>/dynamic_debug/control
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Jason Baron <jbaron@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/dynamic_debug.h')
| -rw-r--r-- | include/linux/dynamic_debug.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h index 29ea09ae30cf..fc39640f2dea 100644 --- a/include/linux/dynamic_debug.h +++ b/include/linux/dynamic_debug.h @@ -21,7 +21,8 @@ struct _ddebug { * The bits here are changed dynamically when the user * writes commands to <debugfs>/dynamic_debug/control */ -#define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */ +#define _DPRINTK_FLAGS_NONE 0 +#define _DPRINTK_FLAGS_PRINT (1<<0) /* printk() a message using the format */ #define _DPRINTK_FLAGS_INCL_MODNAME (1<<1) #define _DPRINTK_FLAGS_INCL_FUNCNAME (1<<2) #define _DPRINTK_FLAGS_INCL_LINENO (1<<3) |