Document backtracer selection options Signed-off-by: Andi Kleen --- Documentation/x86_64/boot-options.txt | 7 +++++++ 1 file changed, 7 insertions(+) Index: linux/Documentation/x86_64/boot-options.txt =================================================================== --- linux.orig/Documentation/x86_64/boot-options.txt +++ linux/Documentation/x86_64/boot-options.txt @@ -245,6 +245,13 @@ Debugging newfallback: use new unwinder but fall back to old if it gets stuck (default) + call_trace=[old|both|newfallback|new] + old: use old inexact backtracer + new: use new exact dwarf2 unwinder + both: print entries from both + newfallback: use new unwinder but fall back to old if it gets + stuck (default) + Misc noreplacement Don't replace instructions with more appropriate ones