linux/arch/ia64/kernel
Tejun Heo 5a0e3ad6af 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>
2010-03-30 22:02:32 +09:00
..
cpufreq include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
.gitignore [IA64] Cleanup generated file not ignored by .gitignore 2008-08-04 11:06:16 -07:00
Makefile elf coredump: replace ELF_CORE_EXTRA_* macros by functions 2010-03-06 11:26:45 -08:00
Makefile.gate kbuild: rename ld-option to cc-ldoption 2009-09-20 12:27:42 +02:00
acpi-ext.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
acpi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
asm-offsets.c ia64/pv_ops/xen: paravirtualize read/write ar.itc and ar.itm 2009-03-26 10:50:32 -07:00
audit.c [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
brl_emu.c
crash.c sysctl: Drop & in front of every proc_handler. 2009-11-18 08:37:40 -08:00
crash_dump.c kdump: make elfcorehdr_addr independent of CONFIG_PROC_VMCORE 2008-10-20 08:52:39 -07:00
cyclone.c clocksource: pass clocksource to read() callback 2009-04-21 13:41:47 -07:00
dma-mapping.c [IA64] Fix warning in dma-mapping.c 2009-09-02 09:12:21 -07:00
efi.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
efi_stub.S
elfcore.c elf coredump: add extended numbering support 2010-03-06 11:26:46 -08:00
entry.S [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
entry.h
err_inject.c sysdev: Pass the attribute to the low level sysdev show/store function 2008-07-21 21:55:02 -07:00
esi.c tree-wide: fix assorted typos all over the place 2009-12-04 15:39:55 +01:00
esi_stub.S
fsys.S ia64/pv_ops: paravirtualize mov = ar.itc. 2009-03-26 10:50:22 -07:00
fsyscall_gtod_data.h
ftrace.c ftrace, ia64: IA64 dynamic ftrace support 2009-01-14 12:11:31 +01:00
gate-data.S
gate.S ia64/pv_ops: paravirtualize gate.S. 2009-03-26 11:01:46 -07:00
gate.lds.S ia64/pv_ops: gate page paravirtualization. 2009-03-26 10:51:02 -07:00
head.S percpu: make percpu symbols in ia64 unique 2009-10-29 22:34:14 +09:00
ia64_ksyms.c percpu: remove per_cpu__ prefix. 2009-10-29 22:34:15 +09:00
init_task.c Use new __init_task_data macro in arch init_task.c files. 2009-09-21 06:27:08 +02:00
iosapic.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
irq.c genirq: Convert irq_desc.lock to raw_spinlock 2009-12-14 23:55:33 +01:00
irq_ia64.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
irq_lsapic.c [IA64] remove obsolete hw_interrupt_type 2009-06-15 14:35:10 -07:00
ivt.S [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
jprobes.S [IA64] Move include/asm-ia64 to arch/ia64/include/asm 2008-08-01 10:21:21 -07:00
kprobes.c kprobes: Disable booster when CONFIG_PREEMPT=y 2010-02-04 09:36:18 +01:00
machine_kexec.c [IA64] kexec: Unregister MCA handler before kexec 2009-09-14 16:18:17 -07:00
machvec.c x86, ia64: convert to use generic dma_map_ops struct 2009-01-06 14:06:57 +01:00
mca.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mca_asm.S percpu: make percpu symbols in ia64 unique 2009-10-29 22:34:14 +09:00
mca_drv.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mca_drv.h
mca_drv_asm.S
minstate.h [IA64] pvops: paravirtualize minstate.h. 2008-05-27 15:02:17 -07:00
module.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
msi_ia64.c [IA64] msi_ia64.c dmar_msi_type should be static 2009-06-15 14:35:54 -07:00
nr-irqs.c ia64/pv_ops/xen: define the nubmer of irqs which xen needs. 2008-10-17 10:06:59 -07:00
numa.c
pal.S
palinfo.c [IA64] Convert ia64 to use int-ll64.h 2009-06-17 09:33:49 -07:00
paravirt.c ia64: remove some warnings. 2009-03-27 11:11:04 -07:00
paravirt_inst.h ia64/pv_ops: paravirtualized instruction checker. 2008-10-17 10:12:54 -07:00
paravirt_patch.c ia64/pv_op/binarypatch: add helper functions to support binary patching for paravirt_ops. 2009-03-26 11:02:31 -07:00
paravirt_patchlist.c [IA64] Fix build error in paravirt_patchlist.c 2009-06-17 09:04:40 -07:00
paravirt_patchlist.h ia64/pv_ops: gate page paravirtualization. 2009-03-26 10:51:02 -07:00
paravirtentry.S ia64/pv_ops: implement binary patching optimization for native. 2009-03-26 11:02:42 -07:00
patch.c ia64: remove some warnings. 2009-03-27 11:11:04 -07:00
pci-dma.c Bug Fix arch/ia64/kernel/pci-dma.c: fix recursive dma_supported() call in iommu_dma_supported() 2009-08-11 14:52:10 -07:00
pci-swiotlb.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
perfmon.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
perfmon_default_smpl.c
perfmon_generic.h
perfmon_itanium.h
perfmon_mckinley.h
perfmon_montecito.h
process.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ptrace.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
relocate_kernel.S percpu: make percpu symbols in ia64 unique 2009-10-29 22:34:14 +09:00
sal.c [IA64] Update check_sal_cache_flush to use platform_send_ipi() 2008-06-11 16:40:33 -07:00
salinfo.c [IA64] address compiler warnings perfmon.c/salinfo.c 2009-06-30 14:26:34 -07:00
setup.c [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
sigframe.h
signal.c [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
smp.c ia64: convert last user of smp_call_function_mask 2009-09-24 09:34:40 +09:30
smpboot.c [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
sys_ia64.c Get rid of open-coding in ia64_brk() 2009-12-11 06:44:58 -05:00
time.c clocksource: add argument to resume callback 2010-02-05 14:54:10 +01:00
topology.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
traps.c [IA64] Remove COMPAT_IA32 support 2010-02-08 10:42:17 -08:00
unaligned.c [IA64] use printk_once() unaligned.c/io_common.c 2009-10-13 12:48:25 -07:00
uncached.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
unwind.c [IA64] Do not go beyond ARRAY_SIZE of unw.hash 2009-02-25 11:48:04 -08:00
unwind_decoder.c
unwind_i.h
vmlinux.lds.S ia64: allocate percpu area for cpu0 like percpu areas for other cpus 2009-10-02 13:28:56 +09:00