On 8/1/2025 2:36 PM, Heiko Carstens wrote: > On Thu, Jul 17, 2025 at 10:19:54PM -0700, Josh Poimboeuf wrote: >> On Thu, Jul 17, 2025 at 02:20:12PM +0200, Jens Remus wrote: >> I believe stack_trace_save_user() is only used by ftrace, and that will >> no longer be needed once ftrace starts using unwind_user. >> >> Maybe Heiko knows if that backchain user stacktrace code has any users? >> >> If distros aren't building with -mbackchain, maybe backchain support can >> be considered obsoleted by sframe, and we can get away with not >> implementing it. > > I guess that's a valid option. I know only of some special cases where > users compile everything on their own with -mbackchain to make this > work on a per-case basis. It shouldn't cause to much pain for them to > switch to sframe, as soon as that is available. Let me have another stab at a cleaner implementation. Shouldn't be too much effort. We can then decide whether to leave it out or not. Will be away from keyboard for a few weeks. Regards, Jens -- Jens Remus Linux on Z Development (D3303) +49-7031-16-1128 Office jremus@xxxxxxxxxx IBM IBM Deutschland Research & Development GmbH; Vorsitzender des Aufsichtsrats: Wolfgang Wendt; Geschäftsführung: David Faller; Sitz der Gesellschaft: Böblingen; Registergericht: Amtsgericht Stuttgart, HRB 243294 IBM Data Privacy Statement: https://www.ibm.com/privacy/
