diff options
Diffstat (limited to 'arch/arm/include/asm/stacktrace.h')
| -rw-r--r-- | arch/arm/include/asm/stacktrace.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm/include/asm/stacktrace.h b/arch/arm/include/asm/stacktrace.h index 33ee1aa4b8c0..d87d60532b86 100644 --- a/arch/arm/include/asm/stacktrace.h +++ b/arch/arm/include/asm/stacktrace.h @@ -18,6 +18,16 @@ struct stackframe { struct llist_node *kr_cur; struct task_struct *tsk; #endif +#ifdef CONFIG_ARM_UNWIND + /* + * This field is used to track the stack pointer value when calling + * __entry routines. This is needed when IRQ stacks and overflow stacks + * are used, because in that case, the struct pt_regs passed to these + * __entry routines may be at the top of the task stack, while we are + * executing from another stack. + */ + unsigned long sp_low; +#endif }; static __always_inline |