linux-kernel - Re: [PATCH 6/7] arch: __get_wchan || STACKTRACE

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Message-ID: <20211008161707.i3cwz6qukgcf4frj@treble>
Date:   Fri, 8 Oct 2021 09:17:07 -0700
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Mark Rutland <mark.rutland@....com>, keescook@...omium.org,
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Subject: Re: [PATCH 6/7] arch: __get_wchan || STACKTRACE_SUPPORT

On Fri, Oct 08, 2021 at 03:45:59PM +0200, Peter Zijlstra wrote:
> > stack_trace_save_tsk() *shouldn't* skip anything unless we've explicitly
> > told it to via skipnr, because I'd expect that
> 
> It's what most archs happen to do today and is what
> stack_trace_save_tsk() as implemented using arch_stack_walk() does.
> Which is I think the closest to canonical we have.

It *is* confusing though.  Even if 'nosched' may be the normally
desired behavior, stack_trace_save_tsk() should probably be named
stack_trace_save_tsk_nosched().

-- 
Josh