linux-kernel - linux-next: build failure after merge of the slabh tree

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Message-Id: <20100329154208.009a8ae2.sfr@canb.auug.org.au>
Date:	Mon, 29 Mar 2010 15:42:08 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Tejun Heo <tj@...nel.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Jon Masters <jcm@...masters.org>
Subject: linux-next: build failure after merge of the slabh tree

Hi Tejun,

After merging the slabh tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

drivers/misc/hwlat_detector.c: In function 'debug_sample_fread':
drivers/misc/hwlat_detector.c:713: error: implicit declaration of function 'kzalloc'
drivers/misc/hwlat_detector.c:713: warning: assignment makes pointer from integer without a cast
drivers/misc/hwlat_detector.c:755: error: implicit declaration of function 'kfree'

Caused by commit d103d3b3e8512312b5254950035366d4422a479a ("percpu: don't
implicitly include slab.h from percpu.h") from the slabh tree interacting
with commit 94366eaeaf5ac4831637de39eac48ca62afe4e2a ("hwlat_detector: A
system hardware latency detector") from the hwlat tree.

I applied the following merge fixup which should be applied to the hwlat
tree anyway, please Jon (see Documentation/SubmitChecklist Rule #1 :-))?

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Mon, 29 Mar 2010 15:38:45 +1100
Subject: [PATCH] hwlat: using kzalloc/kfree requires the include of slab.h

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 drivers/misc/hwlat_detector.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/misc/hwlat_detector.c b/drivers/misc/hwlat_detector.c
index e02d8e1..a56baf4 100644
--- a/drivers/misc/hwlat_detector.c
+++ b/drivers/misc/hwlat_detector.c
@@ -50,6 +50,7 @@
 #include <linux/uaccess.h>
 #include <linux/version.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 
 #define BUF_SIZE_DEFAULT	262144UL		/* 8K*(sizeof(entry)) */
 #define BUF_FLAGS		(RB_FL_OVERWRITE)	/* no block on full */
-- 
1.7.0.3


-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au
http://www.canb.auug.org.au/~sfr/
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