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2011-06-29net+crypto: Use vmalloc for zlib inflate buffers.David S. Miller1-4/+3
They are 64K and result in order-4 allocations, even with SLUB. Therefore, just like we always have for the deflate buffers, use vmalloc. Reported-by: Martin Jackson <mjackson220.list@gmail.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-22zlib: slim down zlib_deflate() workspace when possibleJim Keniston1-7/+11
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>
2010-11-27crypto: Use vzallocJoe Perches1-2/+1
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-06-02crypto: compress - Return produced bytes in crypto_{,de}compress_{update,final}Geert Uytterhoeven1-12/+12
If crypto_{,de}compress_{update,final}() succeed, return the actual number of bytes produced instead of zero, so their users don't have to calculate that theirselves. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2009-03-04crypto: zlib - New zlib crypto module, using pcompGeert Uytterhoeven1-0/+378
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Cc: James Morris <jmorris@namei.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>