1 files changed, 90 insertions, 87 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index c0d41dfadc2d..a6c2c5c1a5f8 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1,3 +1,4 @@
+menu "printk and dmesg options"
 config PRINTK_TIME
        bool "Show timing information on printks"
@@ -25,6 +26,95 @@ config DEFAULT_MESSAGE_LOGLEVEL
          that are auditing their logs closely may want to set it to a lower
          priority.
+config BOOT_PRINTK_DELAY
+        bool "Delay each boot printk message by N milliseconds"
+        depends on DEBUG_KERNEL && PRINTK && GENERIC_CALIBRATE_DELAY
+        help
+          This build option allows you to read kernel boot messages
+          by inserting a short delay after each one.  The delay is
+          specified in milliseconds on the kernel command line,
+          using "boot_delay=N".
+          It is likely that you would also need to use "lpj=M" to preset
+          the "loops per jiffie" value.
+          See a previous boot log for the "lpj" value to use for your
+          system, and then set "lpj=M" before setting "boot_delay=N".
+          NOTE:  Using this option may adversely affect SMP systems.
+          I.e., processors other than the first one may not boot up.
+          BOOT_PRINTK_DELAY also may cause LOCKUP_DETECTOR to detect
+          what it believes to be lockup conditions.
+config DYNAMIC_DEBUG
+        bool "Enable dynamic printk() support"
+        default n
+        depends on PRINTK
+        depends on DEBUG_FS
+        help
+          Compiles debug level messages into the kernel, which would not
+          otherwise be available at runtime. These messages can then be
+          enabled/disabled based on various levels of scope - per source file,
+          function, module, format string, and line number. This mechanism
+          implicitly compiles in all pr_debug() and dev_dbg() calls, which
+          enlarges the kernel text size by about 2%.
+          If a source file is compiled with DEBUG flag set, any
+          pr_debug() calls in it are enabled by default, but can be
+          disabled at runtime as below.  Note that DEBUG flag is
+          turned on by many CONFIG_*DEBUG* options.
+          Usage:
+          Dynamic debugging is controlled via the 'dynamic_debug/control' file,
+          which is contained in the 'debugfs' filesystem. Thus, the debugfs
+          filesystem must first be mounted before making use of this feature.
+          We refer the control file as: <debugfs>/dynamic_debug/control. This
+          file contains a list of the debug statements that can be enabled. The
+          format for each line of the file is:
+                filename:lineno [module]function flags format
+          filename : source file of the debug statement
+          lineno : line number of the debug statement
+          module : module that contains the debug statement
+          function : function that contains the debug statement
+          flags : '=p' means the line is turned 'on' for printing
+          format : the format used for the debug statement
+          From a live system:
+                nullarbor:~ # cat <debugfs>/dynamic_debug/control
+                # filename:lineno [module]function flags format
+                fs/aio.c:222 [aio]__put_ioctx =_ "__put_ioctx:\040freeing\040%p\012"
+                fs/aio.c:248 [aio]ioctx_alloc =_ "ENOMEM:\040nr_events\040too\040high\012"
+                fs/aio.c:1770 [aio]sys_io_cancel =_ "calling\040cancel\012"
+          Example usage:
+                // enable the message at line 1603 of file svcsock.c
+                nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
+                                                <debugfs>/dynamic_debug/control
+                // enable all the messages in file svcsock.c
+                nullarbor:~ # echo -n 'file svcsock.c +p' >
+                                                <debugfs>/dynamic_debug/control
+                // enable all the messages in the NFS server module
+                nullarbor:~ # echo -n 'module nfsd +p' >
+                                                <debugfs>/dynamic_debug/control
+                // enable all 12 messages in the function svc_process()
+                nullarbor:~ # echo -n 'func svc_process +p' >
+                                                <debugfs>/dynamic_debug/control
+                // disable all 12 messages in the function svc_process()
+                nullarbor:~ # echo -n 'func svc_process -p' >
+                                                <debugfs>/dynamic_debug/control
+          See Documentation/dynamic-debug-howto.txt for additional information.
+endmenu # "printk and dmesg options"
 menu "Compile-time checks and compiler options"
 config DEBUG_INFO
@@ -940,24 +1030,6 @@ config DEBUG_CREDENTIALS
          If unsure, say N.
-config BOOT_PRINTK_DELAY
-        bool "Delay each boot printk message by N milliseconds"
-        depends on DEBUG_KERNEL && PRINTK && GENERIC_CALIBRATE_DELAY
-        help
-          This build option allows you to read kernel boot messages
-          by inserting a short delay after each one.  The delay is
-          specified in milliseconds on the kernel command line,
-          using "boot_delay=N".
-          It is likely that you would also need to use "lpj=M" to preset
-          the "loops per jiffie" value.
-          See a previous boot log for the "lpj" value to use for your
-          system, and then set "lpj=M" before setting "boot_delay=N".
-          NOTE:  Using this option may adversely affect SMP systems.
-          I.e., processors other than the first one may not boot up.
-          BOOT_PRINTK_DELAY also may cause LOCKUP_DETECTOR to detect
-          what it believes to be lockup conditions.
 menu "RCU Debugging"
 config PROVE_RCU
@@ -1441,75 +1513,6 @@ config BUILD_DOCSRC
          Say N if you are unsure.
-config DYNAMIC_DEBUG
-        bool "Enable dynamic printk() support"
-        default n
-        depends on PRINTK
-        depends on DEBUG_FS
-        help
-          Compiles debug level messages into the kernel, which would not
-          otherwise be available at runtime. These messages can then be
-          enabled/disabled based on various levels of scope - per source file,
-          function, module, format string, and line number. This mechanism
-          implicitly compiles in all pr_debug() and dev_dbg() calls, which
-          enlarges the kernel text size by about 2%.
-          If a source file is compiled with DEBUG flag set, any
-          pr_debug() calls in it are enabled by default, but can be
-          disabled at runtime as below.  Note that DEBUG flag is
-          turned on by many CONFIG_*DEBUG* options.
-          Usage:
-          Dynamic debugging is controlled via the 'dynamic_debug/control' file,
-          which is contained in the 'debugfs' filesystem. Thus, the debugfs
-          filesystem must first be mounted before making use of this feature.
-          We refer the control file as: <debugfs>/dynamic_debug/control. This
-          file contains a list of the debug statements that can be enabled. The
-          format for each line of the file is:
-                filename:lineno [module]function flags format
-          filename : source file of the debug statement
-          lineno : line number of the debug statement
-          module : module that contains the debug statement
-          function : function that contains the debug statement
-          flags : '=p' means the line is turned 'on' for printing
-          format : the format used for the debug statement
-          From a live system:
-                nullarbor:~ # cat <debugfs>/dynamic_debug/control
-                # filename:lineno [module]function flags format
-                fs/aio.c:222 [aio]__put_ioctx =_ "__put_ioctx:\040freeing\040%p\012"
-                fs/aio.c:248 [aio]ioctx_alloc =_ "ENOMEM:\040nr_events\040too\040high\012"
-                fs/aio.c:1770 [aio]sys_io_cancel =_ "calling\040cancel\012"
-          Example usage:
-                // enable the message at line 1603 of file svcsock.c
-                nullarbor:~ # echo -n 'file svcsock.c line 1603 +p' >
-                                                <debugfs>/dynamic_debug/control
-                // enable all the messages in file svcsock.c
-                nullarbor:~ # echo -n 'file svcsock.c +p' >
-                                                <debugfs>/dynamic_debug/control
-                // enable all the messages in the NFS server module
-                nullarbor:~ # echo -n 'module nfsd +p' >
-                                                <debugfs>/dynamic_debug/control
-                // enable all 12 messages in the function svc_process()
-                nullarbor:~ # echo -n 'func svc_process +p' >
-                                                <debugfs>/dynamic_debug/control
-                // disable all 12 messages in the function svc_process()
-                nullarbor:~ # echo -n 'func svc_process -p' >
-                                                <debugfs>/dynamic_debug/control
-          See Documentation/dynamic-debug-howto.txt for additional information.
 config DMA_API_DEBUG
        bool "Enable debugging of DMA-API usage"
        depends on HAVE_DMA_API_DEBUG