[U-Boot] [PATCH RFC] zlib: Optimize decompression

Wolfgang Denk
2009-12-05T00:32:43Z

Dear Joakim Tjernlund,

In message <1258633364-20805-1-git-send-email-Joakim.Tjernlund@transmode.se> you wrote:
> This patch optimizes 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. No speed test has been performed in u-boot.
>
> Size increase on ppc: 484 bytes
>
> Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
> ---
>
> I have the same optimization queued for linux. Figured it
> would be useful for u-boot too.
>
> Testing and feedback welcome.
>
> lib_generic/zlib.c | 56 ++++++++++++++++++++++++++++++++++++++++-----------
> 1 files changed, 44 insertions(+), 12 deletions(-)

Applied to "next", thanks.

Best regards,

Wolfgang Denk

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