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>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c
index 94966edfb44d..785a08ef9a13 100644
--- a/drivers/char/sysrq.c
+++ b/drivers/char/sysrq.c
@@ -283,7 +283,7 @@ static void sysrq_ftrace_dump(int key, struct tty_struct *tty)
 }
 static struct sysrq_key_op sysrq_ftrace_dump_op = {
         .handler        = sysrq_ftrace_dump,
-        .help_msg       = "dumpZ-ftrace-buffer",
+        .help_msg       = "dump-ftrace-buffer(Z)",
         .action_msg     = "Dump ftrace buffer",
         .enable_mask    = SYSRQ_ENABLE_DUMP,
 };