Status of bzip2 and lzma kernel compression for ARM?

Status of bzip2 and lzma kernel compression for ARM?

[Martin Michlmayr]

What's the status of bzip2 and lzma kernel compression for ARM?
The last messages I can find about this topic are from June and July:
http://lkml.org/lkml/2009/6/24/481

Where can I find the current patch to test and is anyone planning to
submit it for inclusion?

-- 
Martin Michlmayr
http://www.cyrius.com/

Status of bzip2 and lzma kernel compression for ARM?

[Albin Tonnerre]

On Wed, 11 Nov 2009 16:34 +0000, Martin Michlmayr wrote :
> What's the status of bzip2 and lzma kernel compression for ARM?
> The last messages I can find about this topic are from June and July:
> http://lkml.org/lkml/2009/6/24/481

Regarding Bzip2, some testing showed that the decompressor needs at least 3.5Mb
of memory available for malloc(), which is not available on ARM as head.S
allocates only 64kb, so I'm sure what to do about it. At this stage, I think
the most sensible thing to do is forgetting about using bzip2 on ARM.

> Where can I find the current patch to test and is anyone planning to
> submit it for inclusion?

The LZMA patch relies on patch 2/4 of the LZO patchset, which I resubmitted
today: http://lkml.org/lkml/2009/11/11/129. I'll likely submit the LZMA patch
once I get Russell's approval on the ARM part of the LZO patchset. In the
meantime, you can get it here: http://alioth.debian.org/~lutin-guest/patches/

Regards,
-- 
Albin Tonnerre, Free Electrons
Kernel, drivers and embedded Linux development,
consulting, training and support.
http://free-electrons.com

Status of bzip2 and lzma kernel compression for ARM?

[Martin Michlmayr]

* Albin Tonnerre <albin.tonnerre@free-electrons.com> [2009-11-11 18:07]:
> Regarding Bzip2, some testing showed that the decompressor needs at least 3.5Mb
> of memory available for malloc(), which is not available on ARM as head.S
> allocates only 64kb, so I'm sure what to do about it. At this stage, I think
> the most sensible thing to do is forgetting about using bzip2 on ARM.

I'm mostly interested in LZMA, so lack of bzip2 support would not be a
problem for me.

> The LZMA patch relies on patch 2/4 of the LZO patchset, which I
> resubmitted today: http://lkml.org/lkml/2009/11/11/129  I'll likely
> submit the LZMA patch once I get Russell's approval on the ARM part
> of the LZO patchset. In the

Excellent!  I'll give your patch a go on the weekend.
-- 
Martin Michlmayr
http://www.cyrius.com/

Status of bzip2 and lzma kernel compression for ARM?

[Alain Knaff]

On 11/11/09 18:20, Martin Michlmayr wrote:
> * Albin Tonnerre <albin.tonnerre@free-electrons.com> [2009-11-11 18:07]:
>> Regarding Bzip2, some testing showed that the decompressor needs at least 3.5Mb
>> of memory available for malloc(), which is not available on ARM as head.S
>> allocates only 64kb, so I'm sure what to do about it. At this stage, I think
>> the most sensible thing to do is forgetting about using bzip2 on ARM.
> 
> I'm mostly interested in LZMA, so lack of bzip2 support would not be a
> problem for me.
> 
>> The LZMA patch relies on patch 2/4 of the LZO patchset, which I
>> resubmitted today: http://lkml.org/lkml/2009/11/11/129  I'll likely
>> submit the LZMA patch once I get Russell's approval on the ARM part
>> of the LZO patchset. In the
> 
> Excellent!  I'll give your patch a go on the weekend.

My original patch was somehow able to do bzip2 on Arm (or at least in
qemu's Arm  emulator). The "latest" version is for 2.6.30 (attached,
originally posted last June). If there is sufficient interest, I'll update
it for 2.6.31 or the latest release candidate of 2.6.32 .

Regards,

Alain
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