arm64: stacktrace: move dump_backtrace() to kunwind_stack_walk()

Currently dump_backtrace() can only print the PC value at each step of
the unwind, as this is all the information that arch_stack_walk()
passes to the dump_backtrace_entry() callback.

In future we'd like to print some additional information, such as the
origin of entries (e.g. PC, LR, FP) and/or the reliability thereof.

In preparation for doing so, this patch moves dump_backtrace() over to
kunwind_stack_walk(), which passes the full kunwind_state to the
callback.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <[email protected]>
Reviewed-by: Mark Brown <[email protected]>
Reviewed-by: Miroslav Benes <[email protected]>
Reviewed-by: Puranjay Mohan <[email protected]>
Cc: Ard Biesheuvel <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Kalesh Singh <[email protected]>
Cc: Madhavan T. Venkataraman <[email protected]>
Cc: Marc Zyngier <[email protected]>
Cc: Will Deacon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>

0 files changed, 0 insertions, 0 deletions