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>

26 files changed, 25 insertions, 2 deletions

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 1f552c6e7579..cb9fbc83b090 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -23,6 +23,7 @@
 
 #include <linux/kernel.h>
 #include <linux/fs.h>
+#include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/hdreg.h>
 #include <linux/kdev_t.h>
diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index e7f8027165e6..445d7db2277e 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -13,6 +13,7 @@
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
 #include <linux/mmc/mmc.h>
+#include <linux/slab.h>
 
 #include <linux/scatterlist.h>
 
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index 381fe032caa1..d6ded247d941 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -9,6 +9,7 @@
  * published by the Free Software Foundation.
  *
  */
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/blkdev.h>
 #include <linux/freezer.h>
diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index 723e50894db9..a0716967b7c8 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -34,10 +34,10 @@
 #include <linux/seq_file.h>
 #include <linux/serial_reg.h>
 #include <linux/circ_buf.h>
-#include <linux/gfp.h>
 #include <linux/tty.h>
 #include <linux/tty_flip.h>
 #include <linux/kfifo.h>
+#include <linux/slab.h>
 
 #include <linux/mmc/core.h>
 #include <linux/mmc/card.h>
diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index bdb165f93046..49d9dcaeca49 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -13,6 +13,7 @@
 
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index 96d10f40fb23..53cb380c0987 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -10,6 +10,7 @@
 #include <linux/debugfs.h>
 #include <linux/fs.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 #include <linux/stat.h>
 
 #include <linux/mmc/card.h>
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index a268d12f1af0..47353909e345 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -16,6 +16,7 @@
 #include <linux/idr.h>
 #include <linux/pagemap.h>
 #include <linux/leds.h>
+#include <linux/slab.h>
 
 #include <linux/mmc/host.h>
 
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index e041c003db22..89f7a25b7ac1 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/err.h>
+#include <linux/slab.h>
 
 #include <linux/mmc/host.h>
 #include <linux/mmc/card.h>
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index d2cb5c634392..326447c9ede8 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -9,6 +9,7 @@
  * your option) any later version.
  */
 
+#include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/scatterlist.h>
 
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index fdd414eded09..5eac21df4809 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/err.h>
+#include <linux/slab.h>
 
 #include <linux/mmc/host.h>
 #include <linux/mmc/card.h>
diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index 9e060c87e64d..4a890dcb95ab 100644
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -13,6 +13,7 @@
 
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 
 #include <linux/mmc/card.h>
 #include <linux/mmc/sdio_func.h>
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index 9538389783c1..541bdb89e0c5 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -14,6 +14,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/slab.h>
 
 #include <linux/mmc/host.h>
 #include <linux/mmc/card.h>
diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c
index 91dc60cd032b..a6dd7da37357 100644
--- a/drivers/mmc/host/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -65,6 +65,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/clk.h>
 #include <linux/atmel_pdc.h>
+#include <linux/gfp.h>
 
 #include <linux/mmc/host.h>
 
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 8072128e933b..88be37d9e9a5 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -22,6 +22,7 @@
 #include <linux/platform_device.h>
 #include <linux/scatterlist.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 #include <linux/stat.h>
 
 #include <linux/mmc/host.h>
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index 57b21198828f..f5834449400e 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -41,6 +41,7 @@
 #include <linux/scatterlist.h>
 #include <linux/leds.h>
 #include <linux/mmc/host.h>
+#include <linux/slab.h>
 
 #include <asm/io.h>
 #include <asm/mach-au1x00/au1000.h>
diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c
index 56f7b448b911..6919e844072c 100644
--- a/drivers/mmc/host/bfin_sdh.c
+++ b/drivers/mmc/host/bfin_sdh.c
@@ -17,6 +17,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/mmc/host.h>
 #include <linux/proc_fs.h>
+#include <linux/gfp.h>
 
 #include <asm/cacheflush.h>
 #include <asm/dma.h>
diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c
index 4e72964a7b43..92a324f7417c 100644
--- a/drivers/mmc/host/cb710-mmc.c
+++ b/drivers/mmc/host/cb710-mmc.c
@@ -9,7 +9,6 @@
  */
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/pci.h>
 #include <linux/delay.h>
 #include "cb710-mmc.h"
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index d55fe4fb7935..ad847a24a675 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -26,6 +26,7 @@
  */
 #include <linux/sched.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <linux/bio.h>
 #include <linux/dma-mapping.h>
 #include <linux/crc7.h>
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 4c068e5fe6b2..04ae884383f6 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -33,6 +33,7 @@
 #include <linux/debugfs.h>
 #include <linux/io.h>
 #include <linux/memory.h>
+#include <linux/gfp.h>
 
 #include <asm/cacheflush.h>
 #include <asm/div64.h>
diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c
index 0c7a63c1f12f..bb6cc54b558e 100644
--- a/drivers/mmc/host/of_mmc_spi.c
+++ b/drivers/mmc/host/of_mmc_spi.c
@@ -14,6 +14,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/device.h>
+#include <linux/slab.h>
 #include <linux/gpio.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index c6d7e8ecadbf..84d280406341 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -26,6 +26,7 @@
 #include <linux/clk.h>
 #include <linux/scatterlist.h>
 #include <linux/i2c/tps65010.h>
+#include <linux/slab.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 0d783f3e79ed..0ed48959b590 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -29,6 +29,7 @@
 #include <linux/io.h>
 #include <linux/regulator/consumer.h>
 #include <linux/gpio.h>
+#include <linux/gfp.h>
 
 #include <asm/sizes.h>
 
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 8e1020cf73f4..6701af629c30 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -16,6 +16,7 @@
 #include <linux/highmem.h>
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
+#include <linux/slab.h>
 
 #include <linux/mmc/host.h>
 
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 50997d2a63e7..2136794c0cfa 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -15,6 +15,7 @@
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <linux/clk.h>
 #include <linux/io.h>
 
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index d6ab62d539fb..9d4fdfa685e5 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -17,6 +17,7 @@
 #include <linux/highmem.h>
 #include <linux/io.h>
 #include <linux/dma-mapping.h>
+#include <linux/slab.h>
 #include <linux/scatterlist.h>
 
 #include <linux/leds.h>
diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c
index 89bf8cd25cac..69efe01eece8 100644
--- a/drivers/mmc/host/wbsd.c
+++ b/drivers/mmc/host/wbsd.c
@@ -34,6 +34,7 @@
 #include <linux/highmem.h>
 #include <linux/mmc/host.h>
 #include <linux/scatterlist.h>
+#include <linux/slab.h>
 
 #include <asm/io.h>
 #include <asm/dma.h>