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Commit 3871f2ff authored by Randy Dunlap's avatar Randy Dunlap Committed by Ingo Molnar
Browse files

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: default avatarRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 5250d329

Documentation/sysrq.txt

+2 −0
Original line number Diff line number Diff line
@@ -114,6 +114,8 @@ On all - write a character to /proc/sysrq-trigger. e.g.: 


'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

drivers/char/sysrq.c

+1 −1
Original line number Diff line number Diff line
@@ -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,

};