On Fri, Oct 27, 2023 at 6:10 AM Heiko Carstens <hca@xxxxxxxxxxxxx> wrote: > > On Fri, Oct 27, 2023 at 10:00:53AM +0200, Daan De Meyer wrote: > > > > If the kernel gets support for s390x user space unwinding using the backchain, > > we'll propose to enable -mbackchain in the default compilation flags for Fedora > > so that s390x on Fedora will have the same profiling experience as x86-64, arm64 > > and ppc64. For now we'll keep the status quo since compiling with the backchain > > doesn't provide any benefit until the kernel unwinder can unwind user > > space stacks > > using it. > > > > Thanks for clarifying the current state of user space stack unwinding on s390x! > > We will implement the missing pieces and let you know when things are > supposed to work. Do you think we could have an initial patch set for implementing the missing pieces in time for the Linux 6.8 merge window? Then we can look at enabling this for s390x as a Fedora Linux 40 Change. -- Neal Gompa (FAS: ngompa)
