---

yaml
---
r: 17895
b: refs/heads/master
c: 8428cfe
h: refs/heads/master
i:
  17893: 551a60d
  17891: 5265281
  17887: 805bfd6
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: beb25c6e27b21d0c0f7b9c2769fa334f1f9a8c2c
+refs/heads/master: 8428cfe893c1f13eb22cd879669f12b65900738f

trunk/Documentation/kdump/gdbmacros.txt

@@ -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