linux-sg2042/crypto
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
..
async_tx 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
Kconfig Merge branch 'for-next' into for-linus 2010-03-08 16:55:37 +01:00
Makefile crypto: pcrypt - Add pcrypt crypto parallelization wrapper 2010-01-07 15:57:19 +11:00
ablkcipher.c crypto: ablkcipher - Fix checkpatch errors 2010-02-16 20:23:37 +08:00
aead.c crypto: aead - Fix checkpatch errors 2010-02-16 20:24:07 +08:00
aes_generic.c crypto: aes_generic - Fix checkpatch errors 2010-02-16 20:34:59 +08:00
ahash.c crypto: hash - Fix handling of unaligned buffers 2010-03-03 08:03:23 +08:00
algapi.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
algboss.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
ansi_cprng.c crypto: ansi_cprng - Move FIPS functions under CONFIG_CRYPTO_FIPS 2009-11-23 20:25:50 +08:00
anubis.c crypto: anubis - Fix checkpatch errors 2010-02-16 20:25:39 +08:00
api.c crypto: api - Fix checkpatch errors 2010-02-16 20:26:46 +08:00
arc4.c [CRYPTO] api: Get rid of flags argument to setkey 2006-09-21 11:41:02 +10:00
authenc.c crypto: authenc - Move saved IV in front of the ablkcipher request 2010-03-03 22:41:08 +08:00
blkcipher.c crypto: skcipher - Avoid infinite loop when cipher fails selftest 2009-02-18 21:20:06 +08:00
blowfish.c crypto: blowfish - Fix checkpatch errors 2010-02-16 20:24:30 +08:00
camellia.c crypto: camellia - Fix checkpatch errors 2010-02-16 20:27:57 +08:00
cast5.c crypto: cast5 - Fix checkpatch errors 2010-02-16 20:29:01 +08:00
cast6.c crypto: cast6 - Fix checkpatch errors 2010-02-16 20:29:45 +08:00
cbc.c Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
ccm.c crypto: ccm - Fix handling of null assoc data 2009-01-27 17:11:15 +11:00
chainiv.c crypto: chainiv - Use kcrypto_wq instead of keventd_wq 2009-02-19 14:44:02 +08:00
cipher.c crypto: cipher - Fix checkpatch errors 2010-02-16 20:31:37 +08:00
compress.c crypto: compress - Fix checkpatch errors 2010-02-16 20:31:04 +08:00
crc32c.c crypto: crc32 - Fix checkpatch errors 2010-02-16 20:31:19 +08:00
cryptd.c percpu: add __percpu sparse annotations to what's left 2010-02-17 11:17:38 +09:00
crypto_null.c crypto: crypto_null - Fix checkpatch errors 2010-02-16 20:31:54 +08:00
crypto_wq.c crypto: api - Use dedicated workqueue for crypto subsystem 2009-02-19 14:33:40 +08:00
ctr.c crypto: ctr - Use chainiv on raw counter mode 2009-08-13 23:10:39 +10:00
cts.c [CRYPTO] cts: Init SG tables 2008-06-02 15:46:51 +10:00
deflate.c crypto: deflate - Fix checkpatch errors 2010-02-16 20:32:13 +08:00
des_generic.c crypto: des_generic - Fix checkpatch errors 2010-02-16 20:32:31 +08:00
ecb.c crypto: ecb - Fix checkpatch errors 2010-02-16 20:33:49 +08:00
eseqiv.c crypto: eseqiv - Fix IV generation for sync algorithms 2009-04-15 20:45:03 +08:00
fcrypt.c crypto: fcrypt - Fix checkpatch errors 2010-02-16 20:34:07 +08:00
fips.c crypto: api - Add fips_enable flag 2008-08-29 15:50:02 +10:00
gcm.c crypto: gcm - Add RFC4543 wrapper for GCM 2010-01-17 21:52:11 +11:00
gf128mul.c crypto: Fix dead links 2009-03-04 14:43:52 +08:00
ghash-generic.c crypto: ghash - Add GHASH digest algorithm for GCM 2009-08-06 15:32:38 +10:00
hmac.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
internal.h crypto: cryptd - Switch to template create API 2009-07-14 18:45:45 +08:00
khazad.c [CRYPTO] all: Clean up init()/fini() 2008-04-21 10:19:34 +08:00
krng.c crypto: rng - RNG interface and implementation 2008-08-29 15:50:04 +10:00
lrw.c crypto: lrw - Fix big endian support 2009-02-17 20:00:11 +08:00
lzo.c [CRYPTO] all: Clean up init()/fini() 2008-04-21 10:19:34 +08:00
md4.c crypto: md4 - Switch to shash 2008-12-25 11:02:16 +11:00
md5.c crypto: md5 - Set statesize 2010-03-02 21:58:16 +08:00
michael_mic.c crypto: michael_mic - Switch to shash 2008-12-25 11:02:24 +11:00
pcbc.c Convert ERR_PTR(PTR_ERR(p)) instances to ERR_CAST(p) 2008-02-07 08:42:26 -08:00
pcompress.c crypto: api - Remove frontend argument from extsize/init_tfm 2009-07-14 12:58:15 +08:00
pcrypt.c crypto: pcrypt - call the complete function on error 2010-02-04 11:40:17 +11:00
proc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2009-12-08 15:55:13 -08:00
ripemd.h [CRYPTO] ripemd: Put all common RIPEMD values in header file 2008-07-10 20:35:12 +08:00
rmd128.c crypto: rmd128 - Switch to shash 2008-12-25 11:02:09 +11:00
rmd160.c crypto: rmd160 - Switch to shash 2008-12-25 11:02:10 +11:00
rmd256.c crypto: rmd256 - Switch to shash 2008-12-25 11:02:12 +11:00
rmd320.c crypto: rmd320 - Switch to shash 2008-12-25 11:02:13 +11:00
rng.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
salsa20_generic.c crypto: salsa20 - Remove private wrappers around various operations 2008-12-25 11:02:30 +11:00
scatterwalk.c crypto: scatterwalk - Avoid flush_dcache_page on slab pages 2009-02-09 14:30:25 +11:00
seed.c [CRYPTO] seed: New cipher algorithm 2007-10-10 16:55:38 -07:00
seqiv.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
serpent.c [CRYPTO] all: Clean up init()/fini() 2008-04-21 10:19:34 +08:00
sha1_generic.c crypto: sha1_generic - Add export/import support 2009-07-11 18:23:33 +08:00
sha256_generic.c crypto: sha256_generic - Add export/import support 2009-07-11 18:23:34 +08:00
sha512_generic.c crypto: sha512_generic - Use 64-bit counters 2009-07-22 14:38:13 +08:00
shash.c crypto: shash - Test for the algorithms import function before exporting it 2009-07-24 13:57:13 +08:00
tcrypt.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
tcrypt.h crypto: cryptomgr - Add test infrastructure 2008-08-29 15:49:55 +10:00
tea.c [CRYPTO] all: Clean up init()/fini() 2008-04-21 10:19:34 +08:00
testmgr.c crypto: testmgr - Fix complain about lack test for internal used algorithm 2009-12-23 19:45:20 +08:00
testmgr.h crypto: testmgr - Add ghash algorithm test before provide to users 2009-11-23 20:23:04 +08:00
tgr192.c crypto: tgr192 - Switch to shash 2008-12-25 11:02:21 +11:00
twofish.c [CRYPTO] all: Clean up init()/fini() 2008-04-21 10:19:34 +08:00
twofish_common.c [CRYPTO] twofish: Do not unroll big stuff in twofish key setup 2008-01-11 08:16:06 +11:00
vmac.c crypto: vmac - New hash algorithm for intel_txt support 2009-09-02 20:05:22 +10:00
wp512.c crypto: wp512 - Switch to shash 2008-12-25 11:02:22 +11:00
xcbc.c crypto: xcbc - Fix alignment calculation of xcbc_tfm_ctx 2009-08-20 17:58:04 +10:00
xor.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
xts.c [CRYPTO] xts: Use proper alignment 2008-03-06 18:56:19 +08:00
zlib.c crypto: compress - Return produced bytes in crypto_{,de}compress_{update,final} 2009-06-02 14:04:56 +10:00