Re: [PATCH 0/7] arch: More wchan fixes

[Peter Zijlstra]

*sigh*,...

On Fri, Oct 22, 2021 at 05:09:33PM +0200, Peter Zijlstra wrote:
> Hi,
> 
> Respin of the rest of the get_wchan() rework [1]. Given the many problems with
> STACKTRACE this series focuses on the newer ARCH_STACKWALK since that's a
> smaller set of architectures to review with a better specified interface.
> 
> The idea is to piece-wise convert the rest of the architectures to
> ARCH_STACKWALK, but that can be done at leasure.
> 
> PowerPC and ARM64 are a bit funny in that their __switch_to() is in C and ends
> up on the stack. For now simply mark it __sched to make it work. Mark wanted to
> maybe do something different, but I think this ought to get us started.


[1] https://lkml.kernel.org/r/20211008111527.438276127@xxxxxxxxxxxxx

Patches are also available at:

  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/wchan