From: Nick Alcock <nick.alcock@oracle.com>
Date: Wed, 14 Sep 2016 10:05:51 +0000 (+0100)
Subject: dtrace: add a test probe with an empty translation or two
X-Git-Tag: v4.1.12-111.0.20170907_2225~3^2~3^2~37
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a84d51d0aada51e07d6263060720048488f38f5d;p=users%2Fjedix%2Flinux-maple.git

dtrace: add a test probe with an empty translation or two

The empty translation case gets tested nowhere in the kernel, so add a
probe to dt_test with a couple of args that get thrown away by the
translation machinery.

Signed-off-by: Nick Alcock <nick.alcock@oracle.com>
Acked-by: Kris Van Hees <kris.van.hees@oracle.com>
Orabug: 24661801
---

diff --git a/dtrace/dt_test_dev.c b/dtrace/dt_test_dev.c
index 9292da8e34cd6..da14419f04695 100644
--- a/dtrace/dt_test_dev.c
+++ b/dtrace/dt_test_dev.c
@@ -106,6 +106,11 @@ static long dt_test_ioctl(struct file *file,
 
 static int dt_test_open(struct inode *inode, struct file *file)
 {
+	/*
+	 * Test translation-to-nothing.
+	 */
+	DTRACE_PROBE4(sdt__test__open__file, struct inode *,inode, int :, 666,
+		      char * : (), 0, struct file *, file);
 	return 0;
 }