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authorTejun Heo <tj@kernel.org>2010-03-24 17:04:11 +0900
committerTejun Heo <tj@kernel.org>2010-03-30 22:02:32 +0900
commit5a0e3ad6af8660be21ca98a971cd00f331318c05 (patch)
tree5bfb7be11a03176a87296a43ac6647975c00a1d1 /arch/sh
parented391f4ebf8f701d3566423ce8f17e614cde9806 (diff)
downloadop-kernel-dev-5a0e3ad6af8660be21ca98a971cd00f331318c05.zip
op-kernel-dev-5a0e3ad6af8660be21ca98a971cd00f331318c05.tar.gz
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 'arch/sh')
-rw-r--r--arch/sh/drivers/dma/dma-api.c1
-rw-r--r--arch/sh/drivers/dma/dmabrg.c1
-rw-r--r--arch/sh/drivers/heartbeat.c1
-rw-r--r--arch/sh/drivers/pci/pcie-sh7786.c1
-rw-r--r--arch/sh/drivers/push-switch.c1
-rw-r--r--arch/sh/kernel/cpu/fpu.c1
-rw-r--r--arch/sh/kernel/cpu/hwblk.c1
-rw-r--r--arch/sh/kernel/dwarf.c1
-rw-r--r--arch/sh/kernel/kprobes.c1
-rw-r--r--arch/sh/kernel/process.c1
-rw-r--r--arch/sh/kernel/process_32.c1
-rw-r--r--arch/sh/kernel/process_64.c1
-rw-r--r--arch/sh/kernel/ptrace_32.c1
-rw-r--r--arch/sh/kernel/vsyscall/vsyscall.c1
-rw-r--r--arch/sh/mm/consistent.c1
-rw-r--r--arch/sh/mm/hugetlbpage.c1
-rw-r--r--arch/sh/mm/init.c1
-rw-r--r--arch/sh/mm/ioremap.c1
-rw-r--r--arch/sh/mm/ioremap_fixed.c1
-rw-r--r--arch/sh/mm/pgtable.c1
-rw-r--r--arch/sh/mm/pmb.c1
21 files changed, 15 insertions, 6 deletions
diff --git a/arch/sh/drivers/dma/dma-api.c b/arch/sh/drivers/dma/dma-api.c
index 727126e..4a27722 100644
--- a/arch/sh/drivers/dma/dma-api.c
+++ b/arch/sh/drivers/dma/dma-api.c
@@ -17,6 +17,7 @@
#include <linux/platform_device.h>
#include <linux/mm.h>
#include <linux/sched.h>
+#include <linux/slab.h>
#include <asm/dma.h>
DEFINE_SPINLOCK(dma_spin_lock);
diff --git a/arch/sh/drivers/dma/dmabrg.c b/arch/sh/drivers/dma/dmabrg.c
index 72622e3..6ab9c4a 100644
--- a/arch/sh/drivers/dma/dmabrg.c
+++ b/arch/sh/drivers/dma/dmabrg.c
@@ -8,6 +8,7 @@
#include <linux/interrupt.h>
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <asm/dma.h>
#include <asm/dmabrg.h>
#include <asm/io.h>
diff --git a/arch/sh/drivers/heartbeat.c b/arch/sh/drivers/heartbeat.c
index 2acbc79..7efc9c3 100644
--- a/arch/sh/drivers/heartbeat.c
+++ b/arch/sh/drivers/heartbeat.c
@@ -24,6 +24,7 @@
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/io.h>
+#include <linux/slab.h>
#include <asm/heartbeat.h>
#define DRV_NAME "heartbeat"
diff --git a/arch/sh/drivers/pci/pcie-sh7786.c b/arch/sh/drivers/pci/pcie-sh7786.c
index ae91a2d..68cb9b0 100644
--- a/arch/sh/drivers/pci/pcie-sh7786.c
+++ b/arch/sh/drivers/pci/pcie-sh7786.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/delay.h>
+#include <linux/slab.h>
#include "pcie-sh7786.h"
#include <asm/sizes.h>
diff --git a/arch/sh/drivers/push-switch.c b/arch/sh/drivers/push-switch.c
index 725be6d..7b42c24 100644
--- a/arch/sh/drivers/push-switch.c
+++ b/arch/sh/drivers/push-switch.c
@@ -8,6 +8,7 @@
* for more details.
*/
#include <linux/init.h>
+#include <linux/slab.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
diff --git a/arch/sh/kernel/cpu/fpu.c b/arch/sh/kernel/cpu/fpu.c
index f059ed6..7f1b70c 100644
--- a/arch/sh/kernel/cpu/fpu.c
+++ b/arch/sh/kernel/cpu/fpu.c
@@ -1,4 +1,5 @@
#include <linux/sched.h>
+#include <linux/slab.h>
#include <asm/processor.h>
#include <asm/fpu.h>
diff --git a/arch/sh/kernel/cpu/hwblk.c b/arch/sh/kernel/cpu/hwblk.c
index c0ad7d4..67a1e81 100644
--- a/arch/sh/kernel/cpu/hwblk.c
+++ b/arch/sh/kernel/cpu/hwblk.c
@@ -1,6 +1,5 @@
#include <linux/clk.h>
#include <linux/compiler.h>
-#include <linux/slab.h>
#include <linux/io.h>
#include <linux/spinlock.h>
#include <asm/suspend.h>
diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
index 94739ee..a8234b2 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -22,6 +22,7 @@
#include <linux/mm.h>
#include <linux/elf.h>
#include <linux/ftrace.h>
+#include <linux/slab.h>
#include <asm/dwarf.h>
#include <asm/unwinder.h>
#include <asm/sections.h>
diff --git a/arch/sh/kernel/kprobes.c b/arch/sh/kernel/kprobes.c
index c96850b..4049d99 100644
--- a/arch/sh/kernel/kprobes.c
+++ b/arch/sh/kernel/kprobes.c
@@ -13,6 +13,7 @@
#include <linux/ptrace.h>
#include <linux/preempt.h>
#include <linux/kdebug.h>
+#include <linux/slab.h>
#include <asm/cacheflush.h>
#include <asm/uaccess.h>
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index 81add9b..17f89aa 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -1,5 +1,6 @@
#include <linux/mm.h>
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/sched.h>
struct kmem_cache *task_xstate_cachep = NULL;
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index 3cb88f1..0529819 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -15,6 +15,7 @@
*/
#include <linux/module.h>
#include <linux/mm.h>
+#include <linux/slab.h>
#include <linux/elfcore.h>
#include <linux/kallsyms.h>
#include <linux/fs.h>
diff --git a/arch/sh/kernel/process_64.c b/arch/sh/kernel/process_64.c
index c0d40f6..d4ca648 100644
--- a/arch/sh/kernel/process_64.c
+++ b/arch/sh/kernel/process_64.c
@@ -21,6 +21,7 @@
#include <linux/fs.h>
#include <linux/ptrace.h>
#include <linux/reboot.h>
+#include <linux/slab.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/io.h>
diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c
index c625cda..7759a9a 100644
--- a/arch/sh/kernel/ptrace_32.c
+++ b/arch/sh/kernel/ptrace_32.c
@@ -17,7 +17,6 @@
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/user.h>
-#include <linux/slab.h>
#include <linux/security.h>
#include <linux/signal.h>
#include <linux/io.h>
diff --git a/arch/sh/kernel/vsyscall/vsyscall.c b/arch/sh/kernel/vsyscall/vsyscall.c
index 3f7e415..242117c 100644
--- a/arch/sh/kernel/vsyscall/vsyscall.c
+++ b/arch/sh/kernel/vsyscall/vsyscall.c
@@ -11,7 +11,6 @@
* for more details.
*/
#include <linux/mm.h>
-#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/gfp.h>
diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index 902967e..c86a085 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -16,6 +16,7 @@
#include <linux/dma-debug.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/gfp.h>
#include <asm/cacheflush.h>
#include <asm/addrspace.h>
diff --git a/arch/sh/mm/hugetlbpage.c b/arch/sh/mm/hugetlbpage.c
index 9304117..9163db3 100644
--- a/arch/sh/mm/hugetlbpage.c
+++ b/arch/sh/mm/hugetlbpage.c
@@ -13,7 +13,6 @@
#include <linux/mm.h>
#include <linux/hugetlb.h>
#include <linux/pagemap.h>
-#include <linux/slab.h>
#include <linux/sysctl.h>
#include <asm/mman.h>
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 68028e8..c505de6 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -10,6 +10,7 @@
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/init.h>
+#include <linux/gfp.h>
#include <linux/bootmem.h>
#include <linux/proc_fs.h>
#include <linux/pagemap.h>
diff --git a/arch/sh/mm/ioremap.c b/arch/sh/mm/ioremap.c
index 1ab2385..0c99ec2 100644
--- a/arch/sh/mm/ioremap.c
+++ b/arch/sh/mm/ioremap.c
@@ -14,6 +14,7 @@
*/
#include <linux/vmalloc.h>
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/io.h>
diff --git a/arch/sh/mm/ioremap_fixed.c b/arch/sh/mm/ioremap_fixed.c
index 7f682e5..efbe84a 100644
--- a/arch/sh/mm/ioremap_fixed.c
+++ b/arch/sh/mm/ioremap_fixed.c
@@ -15,7 +15,6 @@
#include <linux/io.h>
#include <linux/bootmem.h>
#include <linux/proc_fs.h>
-#include <linux/slab.h>
#include <asm/fixmap.h>
#include <asm/page.h>
#include <asm/pgalloc.h>
diff --git a/arch/sh/mm/pgtable.c b/arch/sh/mm/pgtable.c
index 6f21fb1..26e03a1 100644
--- a/arch/sh/mm/pgtable.c
+++ b/arch/sh/mm/pgtable.c
@@ -1,4 +1,5 @@
#include <linux/mm.h>
+#include <linux/slab.h>
#define PGALLOC_GFP GFP_KERNEL | __GFP_REPEAT | __GFP_ZERO
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index 3cc2193..e43ec60 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -15,7 +15,6 @@
#include <linux/sysdev.h>
#include <linux/cpu.h>
#include <linux/module.h>
-#include <linux/slab.h>
#include <linux/bitops.h>
#include <linux/debugfs.h>
#include <linux/fs.h>
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