[PATCH 1/2] kdump: add dmesg gdbmacro into document

[Akinobu Mita]

Add gdb macro which print the kernel ring buffer into kdump docs

Signed-off-by: Akinobu Mita <mita@xxxxxxxxxxxxxxxx>

--- 2.6/Documentation/kdump/gdbmacros.txt.orig	2006-01-06 10:47:06.000000000 +0900
+++ 2.6/Documentation/kdump/gdbmacros.txt	2006-01-06 10:47:46.000000000 +0900
@@ -177,3 +177,25 @@ document trapinfo
 	'trapinfo <pid>' will tell you by which trap & possibly
 	addresthe kernel paniced.
 end
+
+
+define dmesg
+	set $i = 0
+	set $end_idx = (log_end - 1) & (log_buf_len - 1)
+
+	while ($i < logged_chars)
+		set $idx = (log_end - 1 - logged_chars + $i) & (log_buf_len - 1)
+
+		if ($idx + 100 <= $end_idx) || \
+		   ($end_idx <= $idx && $idx + 100 < log_buf_len)
+			printf "%.100s", &log_buf[$idx]
+			set $i = $i + 100
+		else
+			printf "%c", log_buf[$idx]
+			set $i = $i + 1
+		end
+	end
+end
+document dmesg
+	print the kernel ring buffer
+end
-
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