Implement arch_stack_walk() for Alpha using a simple kernel
stack scanning walker. Start from regs+1 for current tasks
to skip pt_regs and use pcb.ksp for blocked tasks. Filter
candidates with __kernel_text_address() and stop at stack
bounds via kstack_end().
Enable CONFIG_STACKTRACE_SUPPORT and CONFIG_ARCH_STACKWALK
so generic stacktrace users (dump_stack(), /proc/*/stack,
SysRq backtraces, etc.) work on Alpha.
This provides functional in-kernel stack traces without
requiring frame pointer unwinding.
Reviewed-by: Matt Turner <[email protected]>
Tested-by: Matt Turner <[email protected]>
Signed-off-by: Magnus Lindholm <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Magnus Lindholm <[email protected]>
