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-rw-r--r--Documentation/oops-tracing.txt8
1 files changed, 3 insertions, 5 deletions
diff --git a/Documentation/oops-tracing.txt b/Documentation/oops-tracing.txt
index 05960f8a748..2503404ae5c 100644
--- a/Documentation/oops-tracing.txt
+++ b/Documentation/oops-tracing.txt
@@ -41,11 +41,9 @@ the disk is not available then you have three options :-
run a null modem to a second machine and capture the output there
using your favourite communication program. Minicom works well.
-(3) Patch the kernel with one of the crash dump patches. These save
- data to a floppy disk or video rom or a swap partition. None of
- these are standard kernel patches so you have to find and apply
- them yourself. Search kernel archives for kmsgdump, lkcd and
- oops+smram.
+(3) Use Kdump (see Documentation/kdump/kdump.txt),
+ extract the kernel ring buffer from old memory with using dmesg
+ gdbmacro in Documentation/kdump/gdbmacros.txt.
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