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 1f552c6e757..cb9fbc83b09 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 e7f8027165e..445d7db2277 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 381fe032caa..d6ded247d94 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 723e50894db..a0716967b7c 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 bdb165f9304..49d9dcaeca4 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 96d10f40fb2..53cb380c098 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 a268d12f1af..47353909e34 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 e041c003db2..89f7a25b7ac 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 d2cb5c63439..326447c9ede 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 fdd414eded0..5eac21df480 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 9e060c87e64..4a890dcb95a 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 9538389783c..541bdb89e0c 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 91dc60cd032..a6dd7da3735 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 8072128e933..88be37d9e9a 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 57b21198828..f5834449400 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 56f7b448b91..6919e844072 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 4e72964a7b4..92a324f7417 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 d55fe4fb793..ad847a24a67 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 4c068e5fe6b..04ae884383f 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 0c7a63c1f12..bb6cc54b558 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 c6d7e8ecadb..84d28040634 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 0d783f3e79e..0ed48959b59 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 8e1020cf73f..6701af629c3 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 50997d2a63e..2136794c0cf 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 d6ab62d539f..9d4fdfa685e 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 89bf8cd25ca..69efe01eece 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>