- 07 8月, 2014 1 次提交
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由 Sergey Senozhatsky 提交于
Cleanup unused `if 0'-ed functions, which have been dead since 2006 (commits 87c2ce3b ("lib/zlib*: cleanups") by Adrian Bunk and 4f3865fb ("zlib_inflate: Upgrade library code to a recent version") by Richard Purdie): - zlib_deflateSetDictionary - zlib_deflateParams - zlib_deflateCopy - zlib_inflateSync - zlib_syncsearch - zlib_inflateSetDictionary - zlib_inflatePrime Signed-off-by: NSergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 13 3月, 2010 2 次提交
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由 Joakim Tjernlund 提交于
inflate_fast() can do either POST INC or PRE INC on its pointers walking the memory to decompress. Default is PRE INC. The sout pointer offset was miscalculated in one case as the calculation assumed sout was a char * This breaks inflate_fast() iff configured to do POST INC. Signed-off-by: NJoakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Joakim Tjernlund 提交于
Commit 6846ee5c ("zlib: Fix build of powerpc boot wrapper") made the new optimized inflate only available on arch's that define CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS. This patch will again enable the optimization for all arch's by defining our own endian independent version of unaligned access. As an added bonus, arch's that define CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS do a plain load instead. Signed-off-by: NJoakim Tjernlund <Joakim.Tjernlund@transmode.se> Cc: Anton Blanchard <anton@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 14 1月, 2010 1 次提交
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由 Benjamin Herrenschmidt 提交于
Commit ac4c2a3b broke the build of all powerpc boot wrappers. It attempts to add an include of autoconf.h but used the wrong path for it. It also adds -D__KERNEL__ to our boot wrapper, both things that we pretty much didn't do on purpose so far. We want our boot wrapper to remain independent enough of the kernel for various reasons, one of them being that you can "wrap" an existing kernel at distro install time which allows to ship one kernel image and a set of boot wrappers for different platforms, the wrappers don't have to be built out of the same kernel build tree. It's also incorrect to do what the patch does in our boot environment since we may not have a proper alignment exception handler which means we may not be able to fixup the few cases where an unaligned access will need SW emulation (depends on the core variant, could be when crossing page or segment boundaries for example). This patch fixes it by putting the old code back in and using the new "fancy" variant only when CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS is set, which happens not to be set on powerpc since we don't include autoconf.h. It also reverts the changes to our boot wrapper Makefile. This means that x86 should, afaik, keep the optimisations since its boot wrapper does include autoconf.h and define __KERNEL__ (though I doubt they make that much different outside of slow embedded processors). Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 12 1月, 2010 1 次提交
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由 Joakim Tjernlund 提交于
JFFS2 uses lesser compression ratio and inflate always ends up in "copy direct from output" case. This patch tries to optimize the direct copy procedure. Uses get_unaligned() but only in one place. The copy loop just above this one can also use this optimization, but I havn't done so as I have not tested if it is a win there too. On my MPC8321 this is about 17% faster on my JFFS2 root FS than the original. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: NJoakim Tjernlund <Joakim.Tjernlund@transmode.se> Cc: Roel Kluin <roel.kluin@gmail.com> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 05 1月, 2009 1 次提交
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由 Alain Knaff 提交于
Impact: Replaces inflate.c with a wrapper around zlib_inflate; new library code This is the first part of the bzip2/lzma patch The bzip patch is based on an idea by Christian Ludwig, includes support for compressing the kernel with bzip2 or lzma rather than gzip. Both compressors give smaller sizes than gzip. Lzma's decompresses faster than bzip2. It also supports ramdisks and initramfs' compressed using these two compressors. The functionality has been successfully used for a couple of years by the udpcast project This version applies to "tip" kernel 2.6.28 This part contains: - changed inflate.c to accomodate rest of patch - implementation of bzip2 compression (not used at this stage yet) - implementation of lzma compression (not used at this stage yet) - Makefile routines to support bzip2 and lzma kernel compression Signed-off-by: NAlain Knaff <alain@knaff.lu> Signed-off-by: NH. Peter Anvin <hpa@zytor.com>
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- 12 10月, 2007 1 次提交
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由 David S. Miller 提交于
Move zlib_inflate_blob() out into it's own source file, infutil.c, so that things like the powerpc zImage builder in arch/powerpc/boot/Makefile don't end up trying to compile it. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 11 10月, 2007 1 次提交
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由 Denys Vlasenko 提交于
Signed-off-by: NDenys Vlasenko <vda.linux@googlemail.com> Acked-by: NMichael Chan <mchan@broadcom.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 08 5月, 2007 1 次提交
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由 Richard Purdie 提交于
The last zlib_inflate update broke certain corner cases for ppp_deflate decompression handling. This patch fixes some logic to make things work properly again. Users other than ppp_deflate (the only Z_PACKET_FLUSH user) should be unaffected. Fixes bug 8405 (confirmed by Stefan) Signed-off-by: NRichard Purdie <rpurdie@rpsys.net> Cc: Stefan Wenk <stefan.wenk@gmx.at> Cc: <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 8月, 2006 1 次提交
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由 Peter Korsgaard 提交于
The recent zlib update (commit 4f3865fb) broke ppc32 zImage decompression as it tries to decompress to address zero and the updated zlib_inflate checks that strm->next_out isn't a null pointer. This little patch fixes it. [rpurdie@rpsys.net: add comment] Signed-off-by: NPeter Korsgaard <jacmet@sunsite.dk> Acked-by: NTom Rini <trini@kernel.crashing.org> Signed-off-by: NRichard Purdie <rpurdie@rpsys.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 28 6月, 2006 1 次提交
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由 Randy Dunlap 提交于
Fix function definitions to be ANSI-compliant: lib/zlib_inflate/inffast.c:68:1: warning: non-ANSI definition of function 'inflate_fast' lib/zlib_inflate/inftrees.c:33:1: warning: non-ANSI definition of function 'zlib_inflate_table' Signed-off-by: NRandy Dunlap <rdunlap@xenotime.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 27 6月, 2006 1 次提交
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由 Adrian Bunk 提交于
The place in the documentation of the Linux kernel to acknowledge contributions is the CREDITS file. Give Mark Adler an entry there instead of including a string in the kernel image. Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 23 6月, 2006 1 次提交
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由 Richard Purdie 提交于
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: NRichard Purdie <rpurdie@rpsys.net> Acked-by: NJoern Engel <joern@wh.fh-wedel.de> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 11 1月, 2006 1 次提交
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由 Adrian Bunk 提交于
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: NAdrian Bunk <bunk@stusta.de> Cc: Matt Mackall <mpm@selenic.com> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 29 10月, 2005 1 次提交
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由 Olaf Hering 提交于
There is no need to include module.h in inflate.c Signed-off-by: NOlaf Hering <olh@suse.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Anton Blanchard <anton@samba.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NPaul Mackerras <paulus@samba.org>
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- 18 8月, 2005 1 次提交
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由 Linus Torvalds 提交于
It turns out that empty distance code tables are not an error, and that a compressed block with only literals can validly have an empty table and should not be flagged as a data error. Some old versions of gzip had problems with this case, but it does not affect the zlib code in the kernel. Analysis and explanations thanks to Sergey Vlasov <vsu@altlinux.ru> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 06 8月, 2005 1 次提交
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由 Tim Yamin 提交于
These bugs have been fixed in the standard zlib for a while. See for example a) http://sources.redhat.com/ml/bug-gnu-utils/1999-06/msg00183.html b) http://bugs.gentoo.org/show_bug.cgi?id=94584Signed-off-by: NTim Yamin <plasmaroo@gentoo.org> Signed-off-by: NTavis Ormandy <taviso@gentoo.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 17 4月, 2005 1 次提交
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由 Linus Torvalds 提交于
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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