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authorTejun Heo <tj@kernel.org>2010-03-24 11:04:11 +0300
committerTejun Heo <tj@kernel.org>2010-03-30 17:02:32 +0400
commit5a0e3ad6af8660be21ca98a971cd00f331318c05 (patch)
tree5bfb7be11a03176a87296a43ac6647975c00a1d1 /drivers/gpio
parented391f4ebf8f701d3566423ce8f17e614cde9806 (diff)
downloadlinux-5a0e3ad6af8660be21ca98a971cd00f331318c05.tar.xz
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>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/adp5520-gpio.c1
-rw-r--r--drivers/gpio/adp5588-gpio.c1
-rw-r--r--drivers/gpio/bt8xxgpio.c1
-rw-r--r--drivers/gpio/gpiolib.c1
-rw-r--r--drivers/gpio/langwell_gpio.c1
-rw-r--r--drivers/gpio/max7300.c1
-rw-r--r--drivers/gpio/max7301.c1
-rw-r--r--drivers/gpio/max730x.c1
-rw-r--r--drivers/gpio/mc33880.c1
-rw-r--r--drivers/gpio/mcp23s08.c1
-rw-r--r--drivers/gpio/pca953x.c1
-rw-r--r--drivers/gpio/pl061.c1
-rw-r--r--drivers/gpio/timbgpio.c1
-rw-r--r--drivers/gpio/twl4030-gpio.c1
-rw-r--r--drivers/gpio/wm831x-gpio.c1
-rw-r--r--drivers/gpio/wm8350-gpiolib.c1
-rw-r--r--drivers/gpio/wm8994-gpio.c1
-rw-r--r--drivers/gpio/xilinx_gpio.c1
18 files changed, 17 insertions, 1 deletions
diff --git a/drivers/gpio/adp5520-gpio.c b/drivers/gpio/adp5520-gpio.c
index 0f93105873cd..9f2781537001 100644
--- a/drivers/gpio/adp5520-gpio.c
+++ b/drivers/gpio/adp5520-gpio.c
@@ -7,6 +7,7 @@
*/
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
diff --git a/drivers/gpio/adp5588-gpio.c b/drivers/gpio/adp5588-gpio.c
index afc097a16b33..2e8e9e24f887 100644
--- a/drivers/gpio/adp5588-gpio.c
+++ b/drivers/gpio/adp5588-gpio.c
@@ -9,6 +9,7 @@
#include <linux/module.h>
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
diff --git a/drivers/gpio/bt8xxgpio.c b/drivers/gpio/bt8xxgpio.c
index 2559f2289409..aa4f09ad3ced 100644
--- a/drivers/gpio/bt8xxgpio.c
+++ b/drivers/gpio/bt8xxgpio.c
@@ -47,6 +47,7 @@
#include <linux/pci.h>
#include <linux/spinlock.h>
#include <linux/gpio.h>
+#include <linux/slab.h>
/* Steal the hardware definitions from the bttv driver. */
#include "../media/video/bt8xx/bt848.h"
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 6d1b86661e63..76be229c814d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -9,6 +9,7 @@
#include <linux/seq_file.h>
#include <linux/gpio.h>
#include <linux/idr.h>
+#include <linux/slab.h>
/* Optional implementation infrastructure for GPIO interfaces.
diff --git a/drivers/gpio/langwell_gpio.c b/drivers/gpio/langwell_gpio.c
index 6c0ebbdc659e..00c3a14127af 100644
--- a/drivers/gpio/langwell_gpio.c
+++ b/drivers/gpio/langwell_gpio.c
@@ -29,6 +29,7 @@
#include <linux/irq.h>
#include <linux/io.h>
#include <linux/gpio.h>
+#include <linux/slab.h>
struct lnw_gpio_register {
u32 GPLR[2];
diff --git a/drivers/gpio/max7300.c b/drivers/gpio/max7300.c
index 9d74eef1157a..962f661c18c7 100644
--- a/drivers/gpio/max7300.c
+++ b/drivers/gpio/max7300.c
@@ -16,6 +16,7 @@
#include <linux/mutex.h>
#include <linux/i2c.h>
#include <linux/spi/max7301.h>
+#include <linux/slab.h>
static int max7300_i2c_write(struct device *dev, unsigned int reg,
unsigned int val)
diff --git a/drivers/gpio/max7301.c b/drivers/gpio/max7301.c
index 965d9b1ea13e..92a100ddef6b 100644
--- a/drivers/gpio/max7301.c
+++ b/drivers/gpio/max7301.c
@@ -16,6 +16,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
+#include <linux/slab.h>
#include <linux/spi/spi.h>
#include <linux/spi/max7301.h>
diff --git a/drivers/gpio/max730x.c b/drivers/gpio/max730x.c
index 4a7d662ff9b7..7696a5625d58 100644
--- a/drivers/gpio/max730x.c
+++ b/drivers/gpio/max730x.c
@@ -38,6 +38,7 @@
#include <linux/mutex.h>
#include <linux/spi/max7301.h>
#include <linux/gpio.h>
+#include <linux/slab.h>
/*
* Pin configurations, see MAX7301 datasheet page 6
diff --git a/drivers/gpio/mc33880.c b/drivers/gpio/mc33880.c
index e7d01bd8fdb3..935479da6705 100644
--- a/drivers/gpio/mc33880.c
+++ b/drivers/gpio/mc33880.c
@@ -25,6 +25,7 @@
#include <linux/spi/spi.h>
#include <linux/spi/mc33880.h>
#include <linux/gpio.h>
+#include <linux/slab.h>
#define DRIVER_NAME "mc33880"
diff --git a/drivers/gpio/mcp23s08.c b/drivers/gpio/mcp23s08.c
index cd651ec8d034..69f6f1955a31 100644
--- a/drivers/gpio/mcp23s08.c
+++ b/drivers/gpio/mcp23s08.c
@@ -9,6 +9,7 @@
#include <linux/gpio.h>
#include <linux/spi/spi.h>
#include <linux/spi/mcp23s08.h>
+#include <linux/slab.h>
/* Registers are all 8 bits wide.
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index ab5daab14bc2..7d521e1d17e1 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -18,6 +18,7 @@
#include <linux/irq.h>
#include <linux/i2c.h>
#include <linux/i2c/pca953x.h>
+#include <linux/slab.h>
#ifdef CONFIG_OF_GPIO
#include <linux/of_platform.h>
#include <linux/of_gpio.h>
diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index 3ad1eeb49609..5ad8f778ced4 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -24,6 +24,7 @@
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl061.h>
+#include <linux/slab.h>
#define GPIODIR 0x400
#define GPIOIS 0x404
diff --git a/drivers/gpio/timbgpio.c b/drivers/gpio/timbgpio.c
index d4295fa5369e..ac4d0f0ea02b 100644
--- a/drivers/gpio/timbgpio.c
+++ b/drivers/gpio/timbgpio.c
@@ -27,6 +27,7 @@
#include <linux/io.h>
#include <linux/timb_gpio.h>
#include <linux/interrupt.h>
+#include <linux/slab.h>
#define DRIVER_NAME "timb-gpio"
diff --git a/drivers/gpio/twl4030-gpio.c b/drivers/gpio/twl4030-gpio.c
index 7fe881e2bdfb..57635ac35a73 100644
--- a/drivers/gpio/twl4030-gpio.c
+++ b/drivers/gpio/twl4030-gpio.c
@@ -32,7 +32,6 @@
#include <linux/irq.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
-#include <linux/slab.h>
#include <linux/i2c/twl.h>
diff --git a/drivers/gpio/wm831x-gpio.c b/drivers/gpio/wm831x-gpio.c
index d09021f4a7d3..1fa449a1a4cb 100644
--- a/drivers/gpio/wm831x-gpio.c
+++ b/drivers/gpio/wm831x-gpio.c
@@ -13,6 +13,7 @@
*/
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <linux/mfd/core.h>
diff --git a/drivers/gpio/wm8350-gpiolib.c b/drivers/gpio/wm8350-gpiolib.c
index 511840d1c7ba..359999290f55 100644
--- a/drivers/gpio/wm8350-gpiolib.c
+++ b/drivers/gpio/wm8350-gpiolib.c
@@ -13,6 +13,7 @@
*/
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <linux/mfd/core.h>
diff --git a/drivers/gpio/wm8994-gpio.c b/drivers/gpio/wm8994-gpio.c
index de28b4a470ea..7607cc61e1dd 100644
--- a/drivers/gpio/wm8994-gpio.c
+++ b/drivers/gpio/wm8994-gpio.c
@@ -13,6 +13,7 @@
*/
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/module.h>
#include <linux/gpio.h>
#include <linux/mfd/core.h>
diff --git a/drivers/gpio/xilinx_gpio.c b/drivers/gpio/xilinx_gpio.c
index 3c1177abebd3..b8fa65b5bfca 100644
--- a/drivers/gpio/xilinx_gpio.c
+++ b/drivers/gpio/xilinx_gpio.c
@@ -19,6 +19,7 @@
#include <linux/of_gpio.h>
#include <linux/io.h>
#include <linux/gpio.h>
+#include <linux/slab.h>
/* Register Offset Definitions */
#define XGPIO_DATA_OFFSET (0x0) /* Data register */