From: Johannes Berg Date: Thu, 20 Nov 2008 03:24:07 +0000 (+0000) Subject: powerpc: Allow the max stack trace depth to be configured X-Git-Tag: firefly_0821_release~16474^2~99 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c4d04be11f99cc9ce4e3801a5da235727db704a9;p=firefly-linux-kernel-4.4.55.git 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: Johannes Berg Signed-off-by: Paul Mackerras --- diff --git a/arch/powerpc/Kconfig.debug b/arch/powerpc/Kconfig.debug index 15eb27861fc7..08f7cc0a1953 100644 --- a/arch/powerpc/Kconfig.debug +++ b/arch/powerpc/Kconfig.debug @@ -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 diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index b0383236dd07..51b201ddf9a1 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -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) {