diff options
author | Tejun Heo <tj@kernel.org> | 2010-03-24 08:04:11 (GMT) |
---|---|---|
committer | Tejun Heo <tj@kernel.org> | 2010-03-30 13:02:32 (GMT) |
commit | 5a0e3ad6af8660be21ca98a971cd00f331318c05 (patch) | |
tree | 5bfb7be11a03176a87296a43ac6647975c00a1d1 /fs/ocfs2 | |
parent | ed391f4ebf8f701d3566423ce8f17e614cde9806 (diff) | |
download | linux-fsl-qoriq-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 'fs/ocfs2')
-rw-r--r-- | fs/ocfs2/acl.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/buffer_head_io.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/cluster/heartbeat.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/cluster/nodemanager.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/cluster/quorum.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/dlm/dlmast.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/dlm/dlmconvert.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/dlm/dlmthread.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/dlm/dlmunlock.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/extent_map.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/heartbeat.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/inode.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/mmap.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/quota_global.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/quota_local.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/refcounttree.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/stack_o2cb.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/stack_user.c | 1 | ||||
-rw-r--r-- | fs/ocfs2/sysfile.c | 1 |
19 files changed, 8 insertions, 11 deletions
diff --git a/fs/ocfs2/acl.c b/fs/ocfs2/acl.c index 8ccf0f8..e13fc9e 100644 --- a/fs/ocfs2/acl.c +++ b/fs/ocfs2/acl.c @@ -21,6 +21,7 @@ #include <linux/init.h> #include <linux/module.h> +#include <linux/slab.h> #include <linux/string.h> #define MLOG_MASK_PREFIX ML_INODE diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c index 21c808f..ecebb22 100644 --- a/fs/ocfs2/buffer_head_io.c +++ b/fs/ocfs2/buffer_head_io.c @@ -25,7 +25,6 @@ #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #include <cluster/masklog.h> diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c index 5c98900..41d5f1f 100644 --- a/fs/ocfs2/cluster/heartbeat.c +++ b/fs/ocfs2/cluster/heartbeat.c @@ -34,6 +34,7 @@ #include <linux/crc32.h> #include <linux/time.h> #include <linux/debugfs.h> +#include <linux/slab.h> #include "heartbeat.h" #include "tcp.h" diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c index c81142e..ed0c9f3 100644 --- a/fs/ocfs2/cluster/nodemanager.c +++ b/fs/ocfs2/cluster/nodemanager.c @@ -19,6 +19,7 @@ * Boston, MA 021110-1307, USA. */ +#include <linux/slab.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/configfs.h> diff --git a/fs/ocfs2/cluster/quorum.c b/fs/ocfs2/cluster/quorum.c index 6390240..cf3e166 100644 --- a/fs/ocfs2/cluster/quorum.c +++ b/fs/ocfs2/cluster/quorum.c @@ -44,7 +44,6 @@ * and if they're the last, they fire off the decision. */ #include <linux/kernel.h> -#include <linux/slab.h> #include <linux/workqueue.h> #include <linux/reboot.h> diff --git a/fs/ocfs2/dlm/dlmast.c b/fs/ocfs2/dlm/dlmast.c index dccc439..a795eb9 100644 --- a/fs/ocfs2/dlm/dlmast.c +++ b/fs/ocfs2/dlm/dlmast.c @@ -28,7 +28,6 @@ #include <linux/module.h> #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #include <linux/init.h> #include <linux/sysctl.h> diff --git a/fs/ocfs2/dlm/dlmconvert.c b/fs/ocfs2/dlm/dlmconvert.c index f283bce..90803b4 100644 --- a/fs/ocfs2/dlm/dlmconvert.c +++ b/fs/ocfs2/dlm/dlmconvert.c @@ -28,7 +28,6 @@ #include <linux/module.h> #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #include <linux/init.h> #include <linux/sysctl.h> diff --git a/fs/ocfs2/dlm/dlmthread.c b/fs/ocfs2/dlm/dlmthread.c index 52ec020..11a6d1f 100644 --- a/fs/ocfs2/dlm/dlmthread.c +++ b/fs/ocfs2/dlm/dlmthread.c @@ -28,7 +28,6 @@ #include <linux/module.h> #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #include <linux/init.h> #include <linux/sysctl.h> diff --git a/fs/ocfs2/dlm/dlmunlock.c b/fs/ocfs2/dlm/dlmunlock.c index 49e29ec..b47c1b9 100644 --- a/fs/ocfs2/dlm/dlmunlock.c +++ b/fs/ocfs2/dlm/dlmunlock.c @@ -28,7 +28,6 @@ #include <linux/module.h> #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #include <linux/init.h> #include <linux/sysctl.h> diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c index c562a75..09e3fdf 100644 --- a/fs/ocfs2/extent_map.c +++ b/fs/ocfs2/extent_map.c @@ -24,6 +24,7 @@ #include <linux/fs.h> #include <linux/init.h> +#include <linux/slab.h> #include <linux/types.h> #include <linux/fiemap.h> diff --git a/fs/ocfs2/heartbeat.c b/fs/ocfs2/heartbeat.c index c6e7213..1aa863d 100644 --- a/fs/ocfs2/heartbeat.c +++ b/fs/ocfs2/heartbeat.c @@ -26,7 +26,6 @@ #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #define MLOG_MASK_PREFIX ML_SUPER diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c index ab20790..07cc8bb 100644 --- a/fs/ocfs2/inode.c +++ b/fs/ocfs2/inode.c @@ -25,7 +25,6 @@ #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #include <linux/pagemap.h> #include <linux/quotaops.h> diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c index 3973761..7898bd3 100644 --- a/fs/ocfs2/mmap.c +++ b/fs/ocfs2/mmap.c @@ -25,7 +25,6 @@ #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #include <linux/pagemap.h> #include <linux/uio.h> diff --git a/fs/ocfs2/quota_global.c b/fs/ocfs2/quota_global.c index 355f41d..ab42a74 100644 --- a/fs/ocfs2/quota_global.c +++ b/fs/ocfs2/quota_global.c @@ -3,6 +3,7 @@ */ #include <linux/spinlock.h> #include <linux/fs.h> +#include <linux/slab.h> #include <linux/quota.h> #include <linux/quotaops.h> #include <linux/dqblk_qtree.h> diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c index a6467f3..9ad4930 100644 --- a/fs/ocfs2/quota_local.c +++ b/fs/ocfs2/quota_local.c @@ -3,6 +3,7 @@ */ #include <linux/fs.h> +#include <linux/slab.h> #include <linux/quota.h> #include <linux/quotaops.h> #include <linux/module.h> diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 29405f2..bd96f6c 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -37,7 +37,6 @@ #include <linux/bio.h> #include <linux/blkdev.h> -#include <linux/gfp.h> #include <linux/slab.h> #include <linux/writeback.h> #include <linux/pagevec.h> diff --git a/fs/ocfs2/stack_o2cb.c b/fs/ocfs2/stack_o2cb.c index 7020e12..0d3049f 100644 --- a/fs/ocfs2/stack_o2cb.c +++ b/fs/ocfs2/stack_o2cb.c @@ -19,6 +19,7 @@ #include <linux/kernel.h> #include <linux/crc32.h> +#include <linux/slab.h> #include <linux/module.h> /* Needed for AOP_TRUNCATED_PAGE in mlog_errno() */ diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c index 5ae8812..2dc57bc 100644 --- a/fs/ocfs2/stack_user.c +++ b/fs/ocfs2/stack_user.c @@ -21,6 +21,7 @@ #include <linux/fs.h> #include <linux/miscdevice.h> #include <linux/mutex.h> +#include <linux/slab.h> #include <linux/smp_lock.h> #include <linux/reboot.h> #include <asm/uaccess.h> diff --git a/fs/ocfs2/sysfile.c b/fs/ocfs2/sysfile.c index 40e5370..bfe7190 100644 --- a/fs/ocfs2/sysfile.c +++ b/fs/ocfs2/sysfile.c @@ -25,7 +25,6 @@ #include <linux/fs.h> #include <linux/types.h> -#include <linux/slab.h> #include <linux/highmem.h> #define MLOG_MASK_PREFIX ML_INODE |