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[PATCH] x86_64: Document backtracer selection options

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

authored by Andi Kleen and committed by Linus Torvalds b783fd92 b13761ec

+7
unified split
+7
Documentation/x86_64/boot-options.txt
··· 238 pagefaulttrace Dump all page faults. Only useful for extreme debugging 239 and will create a lot of output. 240 241 Misc 242 243 noreplacement Don't replace instructions with more appropriate ones
··· 238 pagefaulttrace Dump all page faults. Only useful for extreme debugging 239 and will create a lot of output. 240 241 + call_trace=[old|both|newfallback|new] 242 + old: use old inexact backtracer 243 + new: use new exact dwarf2 unwinder 244 + both: print entries from both 245 + newfallback: use new unwinder but fall back to old if it gets 246 + stuck (default) 247 + 248 Misc 249 250 noreplacement Don't replace instructions with more appropriate ones