From: Steven Rostedt <srostedt@redhat.com>
Date: Mon, 18 Jun 2012 13:28:16 +0000 (-0400)
Subject: tracing/selftest: Add a WARN_ON() if a tracer test fails
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0be61ebc18b919dddbdbcd1c4f42513c310ecf59;p=linux-beck.git

tracing/selftest: Add a WARN_ON() if a tracer test fails

Add a WARN_ON() output on test failures so that they are easier to detect
in automated tests. Although, the WARN_ON() will not print if the test
causes the system to crash, obviously.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 49249c28690d..748f6401edf6 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -830,6 +830,8 @@ int register_tracer(struct tracer *type)
 		current_trace = saved_tracer;
 		if (ret) {
 			printk(KERN_CONT "FAILED!\n");
+			/* Add the warning after printing 'FAILED' */
+			WARN_ON(1);
 			goto out;
 		}
 		/* Only reset on passing, to avoid touching corrupted buffers */