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Re: [RFC PATCH v2 0/4] Add support for LZ4-compressed kernel
Hi,
Nicolas> To be fair, you should also take into account the compressed
Nicolas> size of a typical ARM kernel. Sometimes a slightly slower
Nicolas> decompressor may be faster overall if the
Hi,
Nicolas> To be fair, you should also take into account the compressed
Nicolas> size of a typical ARM kernel. Sometimes a slightly slower
Nicolas> decompressor may be faster overall if the
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By
Peter Korsgaard
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#859
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Re: [RFC PATCH v2 0/4] Add support for LZ4-compressed kernel
To be fair, you should also take into account the compressed size of a
typical ARM kernel. Sometimes a slightly slower decompressor may be
faster overall if the compressed image to work on is
To be fair, you should also take into account the compressed size of a
typical ARM kernel. Sometimes a slightly slower decompressor may be
faster overall if the compressed image to work on is
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By
Nicolas Pitre <nico@...>
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#858
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Re: [RFC PATCH v2 0/4] Add support for LZ4-compressed kernel
Did you actually *try* the new LZO version and the patch (which is attached
once again) as explained in https://lkml.org/lkml/2013/2/3/367 ?
Because the new LZO version is faster than LZ4 in my
Did you actually *try* the new LZO version and the patch (which is attached
once again) as explained in https://lkml.org/lkml/2013/2/3/367 ?
Because the new LZO version is faster than LZ4 in my
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By
Markus F.X.J. Oberhumer <markus@...>
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#857
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Re: [RFC PATCH v2 2/4] lib: Add support for LZ4-compressed kernel
Can you please add a sentence what lz4 actually is before you start
comparing it with the current competitor(s)?
Please use a less cryptic way of representing a value of 8 MB. Also,
this is a
Can you please add a sentence what lz4 actually is before you start
comparing it with the current competitor(s)?
Please use a less cryptic way of representing a value of 8 MB. Also,
this is a
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By
David Sterba <dsterba@...>
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#856
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Re: [RFC PATCH v2 1/4] decompressor: Add LZ4 decompressor module
What SVN version did you use?
For safety reasons I suggest to add a temporary variable to avoid double
evaluation of isize.
Does this compile? The } is an extra one, and does not match the
original
What SVN version did you use?
For safety reasons I suggest to add a temporary variable to avoid double
evaluation of isize.
Does this compile? The } is an extra one, and does not match the
original
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By
David Sterba <dsterba@...>
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#855
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[RFC PATCH v2 4/4] x86: Add support for LZ4-compressed kernel
This patch integrates the LZ4 decompression code to the x86 pre-boot code.
And it depends on two patchs below
lib: Add support for LZ4-compressed kernel
decompressor: Add LZ4 decompressor
This patch integrates the LZ4 decompression code to the x86 pre-boot code.
And it depends on two patchs below
lib: Add support for LZ4-compressed kernel
decompressor: Add LZ4 decompressor
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By
Kyungsik Lee <kyungsik.lee@...>
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#854
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[RFC PATCH v2 3/4] arm: Add support for LZ4-compressed kernel
This patch integrates the LZ4 decompression code to the arm pre-boot code.
And it depends on two patchs below
lib: Add support for LZ4-compressed kernel
decompressor: Add LZ4 decompressor
This patch integrates the LZ4 decompression code to the arm pre-boot code.
And it depends on two patchs below
lib: Add support for LZ4-compressed kernel
decompressor: Add LZ4 decompressor
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By
Kyungsik Lee <kyungsik.lee@...>
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#853
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[RFC PATCH v2 2/4] lib: Add support for LZ4-compressed kernel
This patch adds support for extracting LZ4-compressed kernel images,
as well as LZ4-compressed ramdisk images in the kernel boot process.
This depends on the patch below
decompressor: Add LZ4
This patch adds support for extracting LZ4-compressed kernel images,
as well as LZ4-compressed ramdisk images in the kernel boot process.
This depends on the patch below
decompressor: Add LZ4
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By
Kyungsik Lee <kyungsik.lee@...>
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#852
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[RFC PATCH v2 1/4] decompressor: Add LZ4 decompressor module
This patch adds support for LZ4 decompression in the Linux Kernel.
LZ4 Decompression APIs for kernel are based on LZ4 implementation
by Yann Collet.
LZ4 homepage :
This patch adds support for LZ4 decompression in the Linux Kernel.
LZ4 Decompression APIs for kernel are based on LZ4 implementation
by Yann Collet.
LZ4 homepage :
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By
Kyungsik Lee <kyungsik.lee@...>
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#851
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[RFC PATCH v2 0/4] Add support for LZ4-compressed kernel
Hi,
First of all, Thank you for the comments and emails from the community.
Here is the second version of support for LZ4-compressed kernel.
In this version, lz4_decompress() has been added. In case
Hi,
First of all, Thank you for the comments and emails from the community.
Here is the second version of support for LZ4-compressed kernel.
In this version, lz4_decompress() has been added. In case
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By
Kyungsik Lee <kyungsik.lee@...>
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#850
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Re: Final call for ELC registration and showcase proposals
I still can't find a link from the Linux Foundation's CELF website to where I should submit my talk outline. I emailed it to you, but it's still not
I still can't find a link from the Linux Foundation's CELF website to where I should submit my talk outline. I emailed it to you, but it's still not
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By
Rob Landley
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#849
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Re: Linux Foundation (CEWG) Japan Jamboree #44
Hi,
Please be reminded that the next Japan Jamboree is scheduled on March 8th
(Japan Time).
http://elinux.org/Japan_Technical_Jamboree_44
If you would like to make presentation remotely, we have
Hi,
Please be reminded that the next Japan Jamboree is scheduled on March 8th
(Japan Time).
http://elinux.org/Japan_Technical_Jamboree_44
If you would like to make presentation remotely, we have
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By
Satoru Ueda <Satoru.Ueda@...>
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#848
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Final call for ELC registration and showcase proposals
Hi everyone,
Embedded Linux Conference is just around the corner -
February 20-22 in San Francisco.
We're very excited about our technical content again this year.
We've got keynotes by
Hi everyone,
Embedded Linux Conference is just around the corner -
February 20-22 in San Francisco.
We're very excited about our technical content again this year.
We've got keynotes by
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By
Tim Bird <tim.bird@...>
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#847
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Re: [RFC PATCH 0/4] Add support for LZ4-compressed kernels
My feeling is that in this case it is unneccessarily hard
for an outside contributor to get a patch accepted, all
because get_maintainer.pl doesn't put someone in charge.
Apparently it doesn't work
My feeling is that in this case it is unneccessarily hard
for an outside contributor to get a patch accepted, all
because get_maintainer.pl doesn't put someone in charge.
Apparently it doesn't work
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By
Johannes Stezenbach <js@...>
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#846
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Linux Foundation (CEWG) Japan Jamboree #44
Hi,
The next Japan Technical Jamboree (#44) is scheduled on March 8th,
Friday. It is just 1 month to the date! Please block your schedule!
http://elinux.org/Japan_Technical_Jamboree_44
Best,
S.
Hi,
The next Japan Technical Jamboree (#44) is scheduled on March 8th,
Friday. It is just 1 month to the date! Please block your schedule!
http://elinux.org/Japan_Technical_Jamboree_44
Best,
S.
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By
Satoru Ueda <Satoru.Ueda@...>
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#845
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Re: [RFC PATCH 0/4] Add support for LZ4-compressed kernels
I assume this code is sitting in *your* tree? How do you think it gets
into mainline?
There is no automatic way that code from linux-next gets merged into
mainline. That is up to the tree owner to
I assume this code is sitting in *your* tree? How do you think it gets
into mainline?
There is no automatic way that code from linux-next gets merged into
mainline. That is up to the tree owner to
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By
Russell King - ARM Linux <linux@...>
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#844
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Re: [RFC PATCH 0/4] Add support for LZ4-compressed kernels
The proposed LZO update currently lives in the linux-next tree.
I had tried several times during the last 12 months to provide an update
of the kernel LZO version, but community interest seemed low
The proposed LZO update currently lives in the linux-next tree.
I had tried several times during the last 12 months to provide an update
of the kernel LZO version, but community interest seemed low
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By
Markus F.X.J. Oberhumer <markus@...>
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#842
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Re: [RFC PATCH 0/4] Add support for LZ4-compressed kernels
In fact you can easily improve LZO decompression speed on armv7 by almost 50%
by adding just a few lines for enabling unaligend access:
armv7 (Cortex-A9), Linaro gcc-4.6 -O3, Silesia test corpus, 256
In fact you can easily improve LZO decompression speed on armv7 by almost 50%
by adding just a few lines for enabling unaligend access:
armv7 (Cortex-A9), Linaro gcc-4.6 -O3, Silesia test corpus, 256
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By
Markus F.X.J. Oberhumer <markus@...>
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#843
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Re: [RFC PATCH 0/4] Add support for LZ4-compressed kernels
Yes, the larger image could matter. Definitely it takes longer.
Here are some updated test cases: Including "loading time"
lzo lz4
loading time:
Yes, the larger image could matter. Definitely it takes longer.
Here are some updated test cases: Including "loading time"
lzo lz4
loading time:
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By
kyungsik.lee <kyungsik.lee@...>
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#841
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Re: [RFC PATCH 0/4] Add support for LZ4-compressed kernels
I didn't test with the proposed LZO update you mentioned. Sorry, which one do you mean?
I did some tests with the latest LZO in the mainline.
As a result, LZO is not faster in an unaligned access
I didn't test with the proposed LZO update you mentioned. Sorry, which one do you mean?
I did some tests with the latest LZO in the mainline.
As a result, LZO is not faster in an unaligned access
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By
kyungsik.lee <kyungsik.lee@...>
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#840
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