user/sven/linux.git/include/linux/zlib.h, branch v3.2.65

zlib: slim down zlib_deflate() workspace when possible

2011-03-23T00:44:17Z

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 Cc: Herbert Xu Cc: David Miller Cc: Chris Mason Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[ZLIB]: Move bnx2 driver gzip unpacker into zlib.

2007-10-10T23:53:57Z

Signed-off-by: Denys Vlasenko Acked-by: Michael Chan Signed-off-by: David S. Miller

[PATCH] zlib_inflate: Upgrade library code to a recent version

2006-06-22T22:05:58Z

Upgrade the zlib_inflate implementation in the kernel from a patched version 1.1.3/4 to a patched 1.2.3. The code in the kernel is about seven years old and I noticed that the external zlib library's inflate performance was significantly faster (~50%) than the code in the kernel on ARM (and faster again on x86_32). For comparison the newer deflate code is 20% slower on ARM and 50% slower on x86_32 but gives an approx 1% compression ratio improvement. I don't consider this to be an improvement for kernel use so have no plans to change the zlib_deflate code. Various changes have been made to the zlib code in the kernel, the most significant being the extra functions/flush option used by ppp_deflate. This update reimplements the features PPP needs to ensure it continues to work. This code has been tested on ARM under both JFFS2 (with zlib compression enabled) and ppp_deflate and on x86_32. JFFS2 sees an approx. 10% real world file read speed improvement. This patch also removes ZLIB_VERSION as it no longer has a correct value. We don't need version checks anyway as the kernel's module handling will take care of that for us. This removal is also more in keeping with the zlib author's wishes (http://www.zlib.net/zlib_faq.html#faq24) and I've added something to the zlib.h header to note its a modified version. Signed-off-by: Richard Purdie Acked-by: Joern Engel Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] lib/zlib*: cleanups

2006-01-10T16:01:57Z

This patch contains the following possible cleanups: - #if 0 the following unused functions: - zlib_deflate/deflate.c: zlib_deflateSetDictionary - zlib_deflate/deflate.c: zlib_deflateParams - zlib_deflate/deflate.c: zlib_deflateCopy - zlib_inflate/infblock.c: zlib_inflate_set_dictionary - zlib_inflate/infblock.c: zlib_inflate_blocks_sync_point - zlib_inflate/inflate_sync.c: zlib_inflateSync - zlib_inflate/inflate_sync.c: zlib_inflateSyncPoint - remove the following unneeded EXPORT_SYMBOL's: - zlib_deflate/deflate_syms.c: zlib_deflateCopy - zlib_deflate/deflate_syms.c: zlib_deflateParams - zlib_inflate/inflate_syms.c: zlib_inflateSync - zlib_inflate/inflate_syms.c: zlib_inflateSyncPoint Signed-off-by: Adrian Bunk Cc: Matt Mackall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Add fakey 'deflateBound()' function to the in-kernel zlib routines

2005-08-06T16:39:57Z

It's not the real deflateBound() in newer zlib libraries, partly because the upcoming usage of it won't have the "stream" available, so we can't have the same interfaces anyway.

[PATCH] zlib cleanup: Z_NULL removal

2003-06-08T02:50:17Z

s/Z_NULL/NULL/g.

[PATCH] zlib cleanup: C++ workarounds

2003-06-08T02:30:27Z

We don't use any cplusplus in the kernel.

[PATCH] zlib cleanup: OF

2003-06-05T09:13:43Z

Remove the stale support for K&R function declarations through the OF() macro. This is the last patch to clean up zconf.h, at least for now.

[PATCH] zlib cleanup: ZEXPORT

2003-06-05T09:13:30Z

Just a simple s/ZEXPORT//.

[PATCH] zlib cleanup: ZEXTERN

2003-06-05T09:11:39Z

This one was just simple s/ZEXTERN/extern/g.