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 1f552c6e7579b..cb9fbc83b0909 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 e7f8027165e69..445d7db2277e4 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 381fe032caa12..d6ded247d9411 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 723e50894db9c..a0716967b7c86 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 bdb165f93046f..49d9dcaeca493 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 96d10f40fb23e..53cb380c0987d 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 a268d12f1af0d..47353909e345c 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 e041c003db224..89f7a25b7ac12 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 d2cb5c6343920..326447c9ede8a 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 fdd414eded09a..5eac21df4809f 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 9e060c87e64db..4a890dcb95ab4 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 9538389783c10..541bdb89e0c5e 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 91dc60cd032b3..a6dd7da37357a 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 8072128e933b8..88be37d9e9a56 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 57b21198828fb..f5834449400e0 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 56f7b448b9112..6919e844072c9 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 4e72964a7b431..92a324f7417c3 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 d55fe4fb79355..ad847a24a6756 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 4c068e5fe6b25..04ae884383f69 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 0c7a63c1f12f4..bb6cc54b558ee 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 c6d7e8ecadbf5..84d280406341f 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 0d783f3e79edf..0ed48959b590e 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 8e1020cf73f42..6701af629c30e 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 50997d2a63e7e..2136794c0cfaf 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 d6ab62d539fb2..9d4fdfa685e57 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 89bf8cd25cace..69efe01eece82 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>