I will take a look at what Peter has done and will coordinate with him. Thanks. Madhavan On 10/20/21 11:10 AM, Mark Brown wrote: > On Thu, Oct 14, 2021 at 09:58:39PM -0500, madvenka@xxxxxxxxxxxxxxxxxxx wrote: >> From: "Madhavan T. Venkataraman" <madvenka@xxxxxxxxxxxxxxxxxxx> >> >> Currently, get_wchan() in ARM64 code walks the stack using start_backtrace() >> and unwind_frame(). Make it use arch_stack_walk() instead. This makes >> maintenance easier. > > This overlaps with some very similar updates that Peter Zijlstra is > working on which addresses some existing problems with wchan: > > https://lore.kernel.org/all/20211008111527.438276127@xxxxxxxxxxxxx/ > > It probably makes sense for you to coordinate with Peter here, some of > that series is already merged up to his patch 6 which looks very > similar to what you've got here. In that thread you'll see that Mark > Rutland spotted an issue with the handling of __switch_to() on arm64 > which probably also applies to your change. > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >
