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authorJim Cromie <jim.cromie@gmail.com>2011-12-20 02:12:44 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-25 00:48:52 +0400
commit5ca7d2a6c5e4f24dfe39e8383c6d32e61d95d16a (patch)
tree9825251f6cd4a7027e8235a73d6a6c8654a6afed /include/linux/dynamic_debug.h
parentd6a238d25014d0ff918410d73e2a6300bca5d1f1 (diff)
downloadlinux-5ca7d2a6c5e4f24dfe39e8383c6d32e61d95d16a.tar.xz
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.h3
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)