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Jim Keniston 565d76cb7d zlib: slim down zlib_deflate() workspace when possible 
Instead of always creating a huge (268K) deflate_workspace with the
maximum compression parameters (windowBits=15, memLevel=8), allow the
caller to obtain a smaller workspace by specifying smaller parameter
values.

For example, when capturing oops and panic reports to a medium with
limited capacity, such as NVRAM, compression may be the only way to
capture the whole report.  In this case, a small workspace (24K works
fine) is a win, whether you allocate the workspace when you need it (i.e.,
during an oops or panic) or at boot time.

I've verified that this patch works with all accepted values of windowBits
(positive and negative), memLevel, and compression level.

Signed-off-by: Jim Keniston <jkenisto@us.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: David Miller <davem@davemloft.net>
Cc: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-22 17:44:17 -07:00
..
async_tx Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2010-10-27 19:04:36 -07:00
ablkcipher.c crypto: skcipher - remove redundant NULL check 2011-01-29 15:09:43 +11:00
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
af_alg.c crypto: af_alg - fix af_alg memory_allocated data type 2010-12-21 22:22:40 +11:00
ahash.c crypto: hash - Fix handling of small unaligned buffers 2010-08-06 09:26:38 +08:00
algapi.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2010-05-03 11:28:58 +08:00
algboss.c crypto: testmgr - Fix test disabling option 2010-08-06 09:40:28 +08:00
algif_hash.c crypto: algif_hash - User-space interface for hash operations 2010-11-19 17:47:58 +08:00
algif_skcipher.c crypto: algif_skcipher - Handle unaligned receive buffer 2010-11-30 17:04:31 +08:00
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
authenc.c crypto: Use scatterwalk_crypto_chain 2010-12-02 14:47:16 +08:00
authencesn.c crypto: authencesn - Add algorithm to handle IPsec extended sequence numbers 2011-03-13 20:22:27 -07:00
blkcipher.c mm: strictly nested kmap_atomic() 2010-10-26 16:52:08 -07:00
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 - simplify if-statements 2010-11-13 21:47:55 +09:00
cast6.c crypto: cast6 - Fix checkpatch errors 2010-02-16 20:29:45 +08:00
cbc.c
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 crypto: cryptd - Adding the AEAD interface type support to cryptd 2010-09-20 16:05:12 +08:00
crypto_null.c crypto: crypto_null - Fix checkpatch errors 2010-02-16 20:31:54 +08:00
crypto_wq.c crypto: mark crypto workqueues CPU_INTENSIVE 2011-01-04 23:34:08 +11:00
ctr.c crypto: Use ERR_CAST 2010-05-26 10:36:51 +10:00
cts.c
deflate.c zlib: slim down zlib_deflate() workspace when possible 2011-03-22 17:44:17 -07:00
des_generic.c Blackfin: Rename DES PC2() symbol to avoid collision 2010-10-07 14:08:50 +01:00
ecb.c crypto: ecb - Fix checkpatch errors 2010-02-16 20:33:49 +08:00
eseqiv.c crypto: Use scatterwalk_crypto_chain 2010-12-02 14:47:16 +08:00
fcrypt.c crypto: fcrypt - Fix checkpatch errors 2010-02-16 20:34:07 +08:00
fips.c
gcm.c crypto: Use scatterwalk_crypto_chain 2010-12-02 14:47:16 +08:00
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: internal - Fix checkpatch errors 2010-03-10 18:24:46 +08:00
Kconfig crypto: gf128mul - Remove experimental tag 2010-12-28 22:56:26 +11:00
khazad.c
krng.c
lrw.c crypto: lrw - Fix big endian support 2009-02-17 20:00:11 +08:00
lzo.c
Makefile crypto: authencesn - Add algorithm to handle IPsec extended sequence numbers 2011-03-13 20:22:27 -07:00
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
pcompress.c crypto: api - Remove frontend argument from extsize/init_tfm 2009-07-14 12:58:15 +08:00
pcrypt.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2011-01-13 10:25:58 -08:00
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
rmd128.c crypto: ripemd - Set module author and update email address 2011-01-04 23:34:03 +11:00
rmd160.c crypto: ripemd - Set module author and update email address 2011-01-04 23:34:03 +11:00
rmd256.c crypto: ripemd - Set module author and update email address 2011-01-04 23:34:03 +11:00
rmd320.c crypto: ripemd - Set module author and update email address 2011-01-04 23:34:03 +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 - Fix scatterwalk_done() test 2010-05-19 14:06:29 +10:00
seed.c
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
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: hash - Fix async import on shash algorithm 2010-11-04 14:48:37 -04:00
tcrypt.c crypto: tcrypt - do not attempt to write to readonly variable 2011-03-04 15:28:52 +08:00
tcrypt.h crypto: tcrypt - Speed testing support for ghash 2010-03-10 18:30:32 +08:00
tea.c
testmgr.c crypto: testmgr - mark ghash as fips_allowed 2011-01-29 15:14:35 +11:00
testmgr.h crypto: sha1 - Add test vector to test partial block processing 2011-02-17 14:24:45 +11:00
tgr192.c crypto: tgr192 - Switch to shash 2008-12-25 11:02:21 +11:00
twofish_common.c
twofish_generic.c crypto: twofish: Rename twofish to twofish_generic and add an alias 2010-06-03 21:02:51 +10:00
vmac.c crypto: vmac - Fix big-endian support 2010-03-18 20:22:55 +08:00
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: Use ERR_CAST 2010-05-26 10:36:51 +10:00
zlib.c zlib: slim down zlib_deflate() workspace when possible 2011-03-22 17:44:17 -07:00