From: Mika Kuoppala <miku@iki.fi>
Date: Tue, 28 Oct 2014 15:32:30 +0000 (+0200)
Subject: drm/i915: Redefine WARN_ON to include the condition
X-Git-Tag: v3.19-rc1~73^2~64^2~88
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c883ef1b1c998d2d66866772fd0fc34afa45641e;p=karo-tx-linux.git

drm/i915: Redefine WARN_ON to include the condition

When looking at the bug report logs with triggered
WARN_ON, the person doing bug triaging will have to
find exact kernel source and match file/line.

Attach the condition that triggered the WARN_ON
to kernel log. In most cases the context is self
evident and this way we can save developer time.

The drawback is ~16kbytes bigger i915.ko

Signed-off-by: Mika Kuoppala <miku@iki.fi>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 0344fd561789..0e12c6ac2be5 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -57,6 +57,9 @@
 #define DRIVER_DESC		"Intel Graphics"
 #define DRIVER_DATE		"20141024"
 
+#undef WARN_ON
+#define WARN_ON(x)		WARN(x, "WARN_ON(" #x ")")
+
 enum pipe {
 	INVALID_PIPE = -1,
 	PIPE_A = 0,