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xtensa: make stack dump size configurable 

Introduce Kconfig symbol PRINT_STACK_DEPTH and use it to initialize
kstack_depth_to_print.

Reviewed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2019-11-12 08:43:25 -08:00
parent c5fccebc13
commit 8951eb1530
2 changed files with 8 additions and 1 deletions
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7
arch/xtensa/Kconfig.debug
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@ -31,3 +31,10 @@ config S32C1I_SELFTEST
It is easy to make wrong hardware configuration, this test should catch it early.
Say 'N' on stable hardware.
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.

2
arch/xtensa/kernel/traps.c
View File

@ -495,7 +495,7 @@ void show_trace(struct task_struct *task, unsigned long *sp)
#define STACK_DUMP_ENTRY_SIZE 4
#define STACK_DUMP_LINE_SIZE 32
static size_t kstack_depth_to_print = 24;
static size_t kstack_depth_to_print = CONFIG_PRINT_STACK_DEPTH;
void show_stack(struct task_struct *task, unsigned long *sp)
{