Re: [PATCH] x86: Pin task-stack in __get_wchan()

On Fri, Nov 19, 2021 at 06:02:50PM +0800, Qi Zheng wrote:

This implementation is very similar to stack_trace_save_tsk(), maybe we can just move stack_trace_save_tsk() out of CONFIG_STACKTRACE and reuse it.

No, we want to move away from the stack_trace_*() API because it has very unclear semantics and various arch implementations differ in details.

There's a patch that untangles arch_stack_walk*() from CONFIG_STACKTRACE and we can eventually use that.