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

[Qi Zheng]

On 11/19/21 6:22 PM, Peter Zijlstra wrote:
> 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.

Got it.

--
Thanks,
Qi