diff options
Diffstat (limited to 'arch/arm/kernel/stacktrace.c')
| -rw-r--r-- | arch/arm/kernel/stacktrace.c | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/arch/arm/kernel/stacktrace.c b/arch/arm/kernel/stacktrace.c index 65228bf4c6df..a56e7c856ab5 100644 --- a/arch/arm/kernel/stacktrace.c +++ b/arch/arm/kernel/stacktrace.c @@ -3,6 +3,7 @@ #include <linux/sched/debug.h> #include <linux/stacktrace.h> +#include <asm/sections.h> #include <asm/stacktrace.h> #include <asm/traps.h> @@ -63,7 +64,6 @@ EXPORT_SYMBOL(walk_stackframe); #ifdef CONFIG_STACKTRACE struct stack_trace_data { struct stack_trace *trace; - unsigned long last_pc; unsigned int no_sched_functions; unsigned int skip; }; @@ -87,16 +87,7 @@ static int save_trace(struct stackframe *frame, void *d) if (trace->nr_entries >= trace->max_entries) return 1; - /* - * in_exception_text() is designed to test if the PC is one of - * the functions which has an exception stack above it, but - * unfortunately what is in frame->pc is the return LR value, - * not the saved PC value. So, we need to track the previous - * frame PC value when doing this. - */ - addr = data->last_pc; - data->last_pc = frame->pc; - if (!in_exception_text(addr)) + if (!in_entry_text(frame->pc)) return 0; regs = (struct pt_regs *)frame->sp; @@ -114,7 +105,6 @@ static noinline void __save_stack_trace(struct task_struct *tsk, struct stackframe frame; data.trace = trace; - data.last_pc = ULONG_MAX; data.skip = trace->skip; data.no_sched_functions = nosched; |