[PATCH] x86_64: Document backtracer selection options
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -238,6 +238,13 @@ Debugging
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pagefaulttrace Dump all page faults. Only useful for extreme debugging
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and will create a lot of output.
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call_trace=[old|both|newfallback|new]
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old: use old inexact backtracer
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new: use new exact dwarf2 unwinder
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both: print entries from both
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newfallback: use new unwinder but fall back to old if it gets
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stuck (default)
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Misc
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noreplacement Don't replace instructions with more appropriate ones
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