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Commit c4d04be1 authored by Johannes Berg's avatar Johannes Berg Committed by Paul Mackerras
Browse files

powerpc: Allow the max stack trace depth to be configured 



On my screen, when something crashes, I only have space for maybe 16
functions of the stack trace before the information above it scrolls
off the screen.  It's easy to hack the kernel to print out only that
much, but it's harder to remember to do it.  This introduces a config
option for it so that I can keep the setting in my config.

Signed-off-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 0186f47e

arch/powerpc/Kconfig.debug

+9 −0
Original line number Diff line number Diff line
@@ -2,6 +2,15 @@ menu "Kernel hacking" 


source "lib/Kconfig.debug"



config PRINT_STACK_DEPTH

	int "Stack depth to print" if DEBUG_KERNEL

	default 64

	help

	  This option allows you to set the stack depth that the kernel

	  prints in stack traces. This can be useful if your display is

	  too small and stack traces cause important information to

	  scroll off the screen.



config DEBUG_STACKOVERFLOW

	bool "Check for stack overflows"

	depends on DEBUG_KERNEL

arch/powerpc/kernel/process.c

+1 −1
Original line number Diff line number Diff line
@@ -1000,7 +1000,7 @@ unsigned long get_wchan(struct task_struct *p) 
	return 0;

}



static int kstack_depth_to_print = 64;

static int kstack_depth_to_print = CONFIG_PRINT_STACK_DEPTH;



void show_stack(struct task_struct *tsk, unsigned long *stack)

{