include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

43 files changed, 43 insertions, 0 deletions

diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 40845c7e93221..565562ba6ac9d 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -15,6 +15,7 @@
 #include <linux/rtc.h>
 #include <linux/kdev_t.h>
 #include <linux/idr.h>
+#include <linux/slab.h>
 
 #include "rtc-core.h"
 
diff --git a/drivers/rtc/rtc-at32ap700x.c b/drivers/rtc/rtc-at32ap700x.c
index 8825695777df2..b2752b6e7a2f9 100644
--- a/drivers/rtc/rtc-at32ap700x.c
+++ b/drivers/rtc/rtc-at32ap700x.c
@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <linux/rtc.h>
 #include <linux/io.h>
 
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 78a018b5c941c..f677e0710ca11 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -18,6 +18,7 @@
 #include <linux/rtc.h>
 #include <linux/interrupt.h>
 #include <linux/ioctl.h>
+#include <linux/slab.h>
 
 #include <mach/board.h>
 #include <mach/at91_rtt.h>
diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c
index b11485b9f21ca..72b2bcc2c2241 100644
--- a/drivers/rtc/rtc-bfin.c
+++ b/drivers/rtc/rtc-bfin.c
@@ -51,6 +51,7 @@
 #include <linux/platform_device.h>
 #include <linux/rtc.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 
 #include <asm/blackfin.h>
 
diff --git a/drivers/rtc/rtc-bq4802.c b/drivers/rtc/rtc-bq4802.c
index 280fe48ada0bf..128270ce355d0 100644
--- a/drivers/rtc/rtc-bq4802.c
+++ b/drivers/rtc/rtc-bq4802.c
@@ -10,6 +10,7 @@
 #include <linux/platform_device.h>
 #include <linux/rtc.h>
 #include <linux/bcd.h>
+#include <linux/slab.h>
 
 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
 MODULE_DESCRIPTION("TI BQ4802 RTC driver");
diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c
index 44c4399ee7144..316f484999b55 100644
--- a/drivers/rtc/rtc-coh901331.c
+++ b/drivers/rtc/rtc-coh901331.c
@@ -14,6 +14,7 @@
 #include <linux/pm.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 /*
  * Registers in the COH 901 331
diff --git a/drivers/rtc/rtc-ds1216.c b/drivers/rtc/rtc-ds1216.c
index 4aedc705518c7..45cd8c9f5a39a 100644
--- a/drivers/rtc/rtc-ds1216.c
+++ b/drivers/rtc/rtc-ds1216.c
@@ -9,6 +9,7 @@
 #include <linux/rtc.h>
 #include <linux/platform_device.h>
 #include <linux/bcd.h>
+#include <linux/slab.h>
 
 #define DRV_VERSION "0.2"
 
diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c
index 4fcb16bbff4ab..bf430f9091ed0 100644
--- a/drivers/rtc/rtc-ds1286.c
+++ b/drivers/rtc/rtc-ds1286.c
@@ -18,6 +18,7 @@
 #include <linux/bcd.h>
 #include <linux/ds1286.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 #define DRV_VERSION		"1.0"
 
diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index 9630e7d3314e5..7836c9cec5578 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/bcd.h>
+#include <linux/slab.h>
 #include <linux/rtc.h>
 #include <linux/workqueue.h>
 
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c
index 5317bbcbc7a0c..61945734ad003 100644
--- a/drivers/rtc/rtc-ds1374.c
+++ b/drivers/rtc/rtc-ds1374.c
@@ -24,6 +24,7 @@
 #include <linux/rtc.h>
 #include <linux/bcd.h>
 #include <linux/workqueue.h>
+#include <linux/slab.h>
 
 #define DS1374_REG_TOD0		0x00 /* Time of Day */
 #define DS1374_REG_TOD1		0x01
diff --git a/drivers/rtc/rtc-ds1390.c b/drivers/rtc/rtc-ds1390.c
index cdb705057091f..26a86d235051f 100644
--- a/drivers/rtc/rtc-ds1390.c
+++ b/drivers/rtc/rtc-ds1390.c
@@ -19,6 +19,7 @@
 #include <linux/rtc.h>
 #include <linux/spi/spi.h>
 #include <linux/bcd.h>
+#include <linux/slab.h>
 
 #define DS1390_REG_100THS		0x00
 #define DS1390_REG_SECONDS		0x01
diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 4166b84cb514f..06b8566c4532e 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -17,6 +17,7 @@
 #include <linux/bcd.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/gfp.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/rtc.h>
diff --git a/drivers/rtc/rtc-ds1553.c b/drivers/rtc/rtc-ds1553.c
index ed1ef7c9cc069..244f9994bcbba 100644
--- a/drivers/rtc/rtc-ds1553.c
+++ b/drivers/rtc/rtc-ds1553.c
@@ -11,6 +11,7 @@
 #include <linux/bcd.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/gfp.h>
 #include <linux/delay.h>
 #include <linux/jiffies.h>
 #include <linux/interrupt.h>
diff --git a/drivers/rtc/rtc-ds1742.c b/drivers/rtc/rtc-ds1742.c
index cad9ceb89bafe..2b4b0bc42d6f7 100644
--- a/drivers/rtc/rtc-ds1742.c
+++ b/drivers/rtc/rtc-ds1742.c
@@ -15,6 +15,7 @@
 #include <linux/bcd.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/gfp.h>
 #include <linux/delay.h>
 #include <linux/jiffies.h>
 #include <linux/rtc.h>
diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index 91bde976bc0fb..11ae64dcbf3c7 100644
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -13,6 +13,7 @@
 #include <linux/rtc.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
+#include <linux/gfp.h>
 
 #define EP93XX_RTC_DATA			0x000
 #define EP93XX_RTC_MATCH		0x004
diff --git a/drivers/rtc/rtc-fm3130.c b/drivers/rtc/rtc-fm3130.c
index 812c667550837..ff6fce61ea41a 100644
--- a/drivers/rtc/rtc-fm3130.c
+++ b/drivers/rtc/rtc-fm3130.c
@@ -13,6 +13,7 @@
 #include <linux/i2c.h>
 #include <linux/rtc.h>
 #include <linux/bcd.h>
+#include <linux/slab.h>
 
 #define FM3130_RTC_CONTROL	(0x0)
 #define FM3130_CAL_CONTROL	(0x1)
diff --git a/drivers/rtc/rtc-m48t35.c b/drivers/rtc/rtc-m48t35.c
index 8cb5b8959e5b2..7410875e58389 100644
--- a/drivers/rtc/rtc-m48t35.c
+++ b/drivers/rtc/rtc-m48t35.c
@@ -16,6 +16,7 @@
 
 #include <linux/module.h>
 #include <linux/rtc.h>
+#include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/bcd.h>
 #include <linux/io.h>
diff --git a/drivers/rtc/rtc-m48t59.c b/drivers/rtc/rtc-m48t59.c
index ede43b8468596..365ff3ac23486 100644
--- a/drivers/rtc/rtc-m48t59.c
+++ b/drivers/rtc/rtc-m48t59.c
@@ -19,6 +19,7 @@
 #include <linux/rtc.h>
 #include <linux/rtc/m48t59.h>
 #include <linux/bcd.h>
+#include <linux/slab.h>
 
 #ifndef NO_IRQ
 #define NO_IRQ	(-1)
diff --git a/drivers/rtc/rtc-max8925.c b/drivers/rtc/rtc-max8925.c
index acdbb1760187a..174036dda7865 100644
--- a/drivers/rtc/rtc-max8925.c
+++ b/drivers/rtc/rtc-max8925.c
@@ -11,6 +11,7 @@
 
 #include <linux/module.h>
 #include <linux/i2c.h>
+#include <linux/slab.h>
 #include <linux/rtc.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/max8925.h>
diff --git a/drivers/rtc/rtc-mc13783.c b/drivers/rtc/rtc-mc13783.c
index 1379c7faa4480..675bfb5153672 100644
--- a/drivers/rtc/rtc-mc13783.c
+++ b/drivers/rtc/rtc-mc13783.c
@@ -13,6 +13,7 @@
 #include <linux/platform_device.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/rtc.h>
 
 #define DRIVER_NAME "mc13783-rtc"
diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c
index 4313ca03a96d8..f0dbf9cb8f9c4 100644
--- a/drivers/rtc/rtc-mpc5121.c
+++ b/drivers/rtc/rtc-mpc5121.c
@@ -15,6 +15,7 @@
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 struct mpc5121_rtc_regs {
 	u8 set_time;		/* RTC + 0x00 */
diff --git a/drivers/rtc/rtc-msm6242.c b/drivers/rtc/rtc-msm6242.c
index 5f5968a489258..b2fff0ca49f8c 100644
--- a/drivers/rtc/rtc-msm6242.c
+++ b/drivers/rtc/rtc-msm6242.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/rtc.h>
+#include <linux/slab.h>
 
 
 enum {
diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c
index dc052ce6e63a8..bcca472985540 100644
--- a/drivers/rtc/rtc-mv.c
+++ b/drivers/rtc/rtc-mv.c
@@ -13,6 +13,7 @@
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
+#include <linux/gfp.h>
 
 
 #define RTC_TIME_REG_OFFS	0
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 8710f9415d98c..c77f6f72f9500 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -12,6 +12,7 @@
 #include <linux/io.h>
 #include <linux/rtc.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c
index bf59c9c586b2d..a351bd5d81765 100644
--- a/drivers/rtc/rtc-nuc900.c
+++ b/drivers/rtc/rtc-nuc900.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <linux/rtc.h>
 #include <linux/delay.h>
 #include <linux/io.h>
diff --git a/drivers/rtc/rtc-pcap.c b/drivers/rtc/rtc-pcap.c
index a99c28992d216..25c0b3fd44f1b 100644
--- a/drivers/rtc/rtc-pcap.c
+++ b/drivers/rtc/rtc-pcap.c
@@ -17,6 +17,7 @@
 #include <linux/init.h>
 #include <linux/mfd/ezx-pcap.h>
 #include <linux/rtc.h>
+#include <linux/slab.h>
 #include <linux/platform_device.h>
 
 struct pcap_rtc {
diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
index 2ceb365533b2a..71bab0ef54436 100644
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -39,6 +39,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <linux/slab.h>
 #include <linux/rtc.h>
 #include <linux/spi/spi.h>
 
diff --git a/drivers/rtc/rtc-pcf50633.c b/drivers/rtc/rtc-pcf50633.c
index 854c3cb365a19..16edf94ab42f2 100644
--- a/drivers/rtc/rtc-pcf50633.c
+++ b/drivers/rtc/rtc-pcf50633.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/device.h>
+#include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/rtc.h>
 #include <linux/bcd.h>
diff --git a/drivers/rtc/rtc-pcf8563.c b/drivers/rtc/rtc-pcf8563.c
index 65f346b2fbaeb..1af42b4a6f59c 100644
--- a/drivers/rtc/rtc-pcf8563.c
+++ b/drivers/rtc/rtc-pcf8563.c
@@ -17,6 +17,7 @@
 #include <linux/i2c.h>
 #include <linux/bcd.h>
 #include <linux/rtc.h>
+#include <linux/slab.h>
 
 #define DRV_VERSION "0.4.3"
 
diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
index 457231bb10297..bbdb2f02798a1 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -13,6 +13,7 @@
 #include <linux/interrupt.h>
 #include <linux/amba/bus.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 #define RTC_DR		(0)
 #define RTC_MR		(4)
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index c256aacfa9542..3587d9922f289 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -24,6 +24,7 @@
 #include <linux/bcd.h>
 #include <linux/delay.h>
 #include <linux/version.h>
+#include <linux/slab.h>
 
 /*
  * Register definitions
diff --git a/drivers/rtc/rtc-pxa.c b/drivers/rtc/rtc-pxa.c
index e6351b743da64..e9c6fa035989a 100644
--- a/drivers/rtc/rtc-pxa.c
+++ b/drivers/rtc/rtc-pxa.c
@@ -26,6 +26,7 @@
 #include <linux/seq_file.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/slab.h>
 
 #include <mach/hardware.h>
 
diff --git a/drivers/rtc/rtc-rp5c01.c b/drivers/rtc/rtc-rp5c01.c
index e1313feb060f0..a95f733bb15aa 100644
--- a/drivers/rtc/rtc-rp5c01.c
+++ b/drivers/rtc/rtc-rp5c01.c
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/rtc.h>
+#include <linux/slab.h>
 
 
 enum {
diff --git a/drivers/rtc/rtc-rs5c348.c b/drivers/rtc/rtc-rs5c348.c
index 2099037cb3eab..368d0e63cf836 100644
--- a/drivers/rtc/rtc-rs5c348.c
+++ b/drivers/rtc/rtc-rs5c348.c
@@ -19,6 +19,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <linux/slab.h>
 #include <linux/rtc.h>
 #include <linux/workqueue.h>
 #include <linux/spi/spi.h>
diff --git a/drivers/rtc/rtc-rs5c372.c b/drivers/rtc/rtc-rs5c372.c
index 2f2c68d476daa..90cf0a6ff23e3 100644
--- a/drivers/rtc/rtc-rs5c372.c
+++ b/drivers/rtc/rtc-rs5c372.c
@@ -13,6 +13,7 @@
 #include <linux/i2c.h>
 #include <linux/rtc.h>
 #include <linux/bcd.h>
+#include <linux/slab.h>
 
 #define DRV_VERSION "0.6"
 
diff --git a/drivers/rtc/rtc-rx8025.c b/drivers/rtc/rtc-rx8025.c
index b1a29bcfdf133..b65c82f792d9c 100644
--- a/drivers/rtc/rtc-rx8025.c
+++ b/drivers/rtc/rtc-rx8025.c
@@ -20,6 +20,7 @@
  */
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/bcd.h>
 #include <linux/i2c.h>
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index e0d7b99915055..4969b6059c896 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -21,6 +21,7 @@
 #include <linux/bcd.h>
 #include <linux/clk.h>
 #include <linux/log2.h>
+#include <linux/slab.h>
 
 #include <mach/hardware.h>
 #include <asm/uaccess.h>
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index e95cc6f8d61e2..5efbd5990ff8d 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -26,6 +26,7 @@
 #include <linux/io.h>
 #include <linux/log2.h>
 #include <linux/clk.h>
+#include <linux/slab.h>
 #include <asm/rtc.h>
 
 #define DRV_NAME	"sh-rtc"
diff --git a/drivers/rtc/rtc-stk17ta8.c b/drivers/rtc/rtc-stk17ta8.c
index 67700831b5c99..875ba099e7a55 100644
--- a/drivers/rtc/rtc-stk17ta8.c
+++ b/drivers/rtc/rtc-stk17ta8.c
@@ -14,6 +14,7 @@
 #include <linux/bcd.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
+#include <linux/gfp.h>
 #include <linux/delay.h>
 #include <linux/jiffies.h>
 #include <linux/interrupt.h>
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index d7ce1a5c857df..7e7d0c806f2db 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -22,6 +22,7 @@
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <linux/rtc.h>
+#include <linux/slab.h>
 
 #include <mach/platform.h>
 #include <mach/stmp3xxx.h>
diff --git a/drivers/rtc/rtc-tx4939.c b/drivers/rtc/rtc-tx4939.c
index 9ee81d8aa7c02..20bfc64a15c82 100644
--- a/drivers/rtc/rtc-tx4939.c
+++ b/drivers/rtc/rtc-tx4939.c
@@ -12,6 +12,7 @@
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
+#include <linux/gfp.h>
 #include <asm/txx9/tx4939.h>
 
 struct tx4939rtc_plat_data {
diff --git a/drivers/rtc/rtc-v3020.c b/drivers/rtc/rtc-v3020.c
index bed4cab070436..f71c3ce180369 100644
--- a/drivers/rtc/rtc-v3020.c
+++ b/drivers/rtc/rtc-v3020.c
@@ -28,6 +28,7 @@
 #include <linux/rtc-v3020.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
+#include <linux/slab.h>
 
 #include <linux/io.h>
 
diff --git a/drivers/rtc/rtc-wm831x.c b/drivers/rtc/rtc-wm831x.c
index 000c7e481e594..b16cfe57a484b 100644
--- a/drivers/rtc/rtc-wm831x.c
+++ b/drivers/rtc/rtc-wm831x.c
@@ -16,6 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/time.h>
 #include <linux/rtc.h>
+#include <linux/slab.h>
 #include <linux/bcd.h>
 #include <linux/interrupt.h>
 #include <linux/ioctl.h>