[PATCH] lockdep: i386 remove multi entry backtraces

Remove CONFIG_STACK_BACKTRACE_COLS.

This feature didnt work out: instead of making kernel debugging more
efficient, it produces much harder to read stacktraces!  Check out this trace
for example:

  http://static.flickr.com/47/158326090_35d0129147_b_d.jpg

That backtrace could have been printed much nicer as a one-entry-per-line
thing, taking the same amount of screen real-estate.

Plus we remove 30 lines of kernel code as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 0 insertions, 9 deletions

diff --git a/arch/i386/Kconfig.debug b/arch/i386/Kconfig.debug
index c92191b1fb67..b20ddd04f3d8 100644
--- a/arch/i386/Kconfig.debug
+++ b/arch/i386/Kconfig.debug
@@ -31,15 +31,6 @@ config DEBUG_STACK_USAGE
 
           This option will slow down process creation somewhat.
 
-config STACK_BACKTRACE_COLS
-        int "Stack backtraces per line" if DEBUG_KERNEL
-        range 1 3
-        default 2
-        help
-          Selects how many stack backtrace entries per line to display.
-
-          This can save screen space when displaying traces.
-
 comment "Page alloc debug is incompatible with Software Suspend on i386"
         depends on DEBUG_KERNEL && SOFTWARE_SUSPEND