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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 /drivers/pci/hotplug
parented391f4ebf8f701d3566423ce8f17e614cde9806 (diff)
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/pci/hotplug')
-rw-r--r--drivers/pci/hotplug/acpi_pcihp.c1
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c1
-rw-r--r--drivers/pci/hotplug/acpiphp_ibm.c1
-rw-r--r--drivers/pci/hotplug/cpqphp_sysfs.c1
-rw-r--r--drivers/pci/hotplug/fakephp.c1
-rw-r--r--drivers/pci/hotplug/pci_hotplug_core.c1
-rw-r--r--drivers/pci/hotplug/pciehp_acpi.c1
-rw-r--r--drivers/pci/hotplug/pciehp_core.c1
-rw-r--r--drivers/pci/hotplug/pciehp_ctrl.c1
-rw-r--r--drivers/pci/hotplug/pciehp_hpc.c1
-rw-r--r--drivers/pci/hotplug/rpaphp_core.c1
-rw-r--r--drivers/pci/hotplug/sgi_hotplug.c1
-rw-r--r--drivers/pci/hotplug/shpchp_core.c1
-rw-r--r--drivers/pci/hotplug/shpchp_ctrl.c1
14 files changed, 12 insertions, 2 deletions
diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index 3c76fc67cf0..45fcc1e96df 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -32,6 +32,7 @@
#include <linux/pci_hotplug.h>
#include <linux/acpi.h>
#include <linux/pci-acpi.h>
+#include <linux/slab.h>
#define MY_NAME "acpi_pcihp"
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index b5dad9f3745..cb23aa2ebf9 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -47,6 +47,7 @@
#include <linux/pci_hotplug.h>
#include <linux/pci-acpi.h>
#include <linux/mutex.h>
+#include <linux/slab.h>
#include "../pci.h"
#include "acpiphp.h"
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index aa5df485f8c..6ecbfb27db9 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -26,6 +26,7 @@
*/
#include <linux/init.h>
+#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <acpi/acpi_bus.h>
diff --git a/drivers/pci/hotplug/cpqphp_sysfs.c b/drivers/pci/hotplug/cpqphp_sysfs.c
index e6089bdb6e5..56215322930 100644
--- a/drivers/pci/hotplug/cpqphp_sysfs.c
+++ b/drivers/pci/hotplug/cpqphp_sysfs.c
@@ -28,6 +28,7 @@
#include <linux/module.h>
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/workqueue.h>
diff --git a/drivers/pci/hotplug/fakephp.c b/drivers/pci/hotplug/fakephp.c
index 0a894efd4b9..5317e4d7d96 100644
--- a/drivers/pci/hotplug/fakephp.c
+++ b/drivers/pci/hotplug/fakephp.c
@@ -19,6 +19,7 @@
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/device.h>
+#include <linux/slab.h>
#include "../pci.h"
struct legacy_slot {
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index 728b119f71a..6d2eea93298 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -33,7 +33,6 @@
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/pagemap.h>
-#include <linux/slab.h>
#include <linux/init.h>
#include <linux/mount.h>
#include <linux/namei.h>
diff --git a/drivers/pci/hotplug/pciehp_acpi.c b/drivers/pci/hotplug/pciehp_acpi.c
index b09b083011d..1f4000a5a10 100644
--- a/drivers/pci/hotplug/pciehp_acpi.c
+++ b/drivers/pci/hotplug/pciehp_acpi.c
@@ -26,6 +26,7 @@
#include <linux/acpi.h>
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
+#include <linux/slab.h>
#include "pciehp.h"
#define PCIEHP_DETECT_PCIE (0)
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 920f820edf8..3588ea61b0d 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -30,6 +30,7 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
+#include <linux/slab.h>
#include <linux/types.h>
#include <linux/pci.h>
#include "pciehp.h"
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 9a7f247e8ac..8f58148be04 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -30,6 +30,7 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
+#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/workqueue.h>
#include "../pci.h"
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 9665d6b17a2..0cd42047d89 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -36,6 +36,7 @@
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/time.h>
+#include <linux/slab.h>
#include "../pci.h"
#include "pciehp.h"
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index dcaae725fd7..71970224078 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -27,7 +27,6 @@
#include <linux/moduleparam.h>
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
-#include <linux/slab.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <asm/eeh.h> /* for eeh_add_device() */
diff --git a/drivers/pci/hotplug/sgi_hotplug.c b/drivers/pci/hotplug/sgi_hotplug.c
index 8aebe1e9d3d..72d507b6a2a 100644
--- a/drivers/pci/hotplug/sgi_hotplug.c
+++ b/drivers/pci/hotplug/sgi_hotplug.c
@@ -15,6 +15,7 @@
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#include <linux/proc_fs.h>
+#include <linux/slab.h>
#include <linux/types.h>
#include <linux/mutex.h>
diff --git a/drivers/pci/hotplug/shpchp_core.c b/drivers/pci/hotplug/shpchp_core.c
index a5062297f48..a7bd5048396 100644
--- a/drivers/pci/hotplug/shpchp_core.c
+++ b/drivers/pci/hotplug/shpchp_core.c
@@ -31,6 +31,7 @@
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/types.h>
+#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/workqueue.h>
#include "shpchp.h"
diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c
index 3bba0c0888f..3387fbfb0c5 100644
--- a/drivers/pci/hotplug/shpchp_ctrl.c
+++ b/drivers/pci/hotplug/shpchp_ctrl.c
@@ -30,6 +30,7 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
+#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/workqueue.h>
#include "../pci.h"