sysrq: fix ftrace help msg & doc.
Impact: update documentation and help messages
We have a conventional method of explicitly stating the
sysrq action key in a sysrq help message, so change
dump-ftrace-buffer to use that method and add it to
Documentation/sysrq.txt.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/sysrq.txt b/Documentation/sysrq.txt
index 10a0263..56b53e0 100644
--- a/Documentation/sysrq.txt
+++ b/Documentation/sysrq.txt
@@ -114,6 +114,8 @@
'x' - Used by xmon interface on ppc/powerpc platforms.
+'z' - Dump the ftrace buffer
+
'0'-'9' - Sets the console log level, controlling which kernel messages
will be printed to your console. ('0', for example would make
it so that only emergency messages like PANICs or OOPSes would