* Possible stable fix for decompressor speed
@ 2014-01-28 16:14 Mark Brown
2014-01-28 16:28 ` Greg Kroah-Hartman
2014-02-03 13:59 ` Luis Henriques
0 siblings, 2 replies; 3+ messages in thread
From: Mark Brown @ 2014-01-28 16:14 UTC (permalink / raw)
To: Greg Kroah-Hartman
Cc: Jon Medhurst, Alexandre Courbot, stable, linaro-kernel,
linux-kernel
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The changes in patch 1431574a1c4c (lib/decompressors: fix "no limit"
output buffer length) avoid doing decompression a byte at a time when
decompressing into high physical addresses using a small, well isolated
change. The patch can give a very noticable improvement in kernel boot
times on affected systems, for example with one ARM system this reduces
the total time to boot the kernel by more than a third.
Would you consider this patch for stable? It doesn't quite fit within
the criteria but you've indicated in the past that such isolated and
well supported changs can be acceptable anyway. If it's not OK for
stable it seems like it should be a good candidate for LTSI.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Possible stable fix for decompressor speed
2014-01-28 16:14 Possible stable fix for decompressor speed Mark Brown
@ 2014-01-28 16:28 ` Greg Kroah-Hartman
2014-02-03 13:59 ` Luis Henriques
1 sibling, 0 replies; 3+ messages in thread
From: Greg Kroah-Hartman @ 2014-01-28 16:28 UTC (permalink / raw)
To: Mark Brown
Cc: Jon Medhurst, Alexandre Courbot, stable, linaro-kernel,
linux-kernel
On Tue, Jan 28, 2014 at 04:14:28PM +0000, Mark Brown wrote:
> The changes in patch 1431574a1c4c (lib/decompressors: fix "no limit"
> output buffer length) avoid doing decompression a byte at a time when
> decompressing into high physical addresses using a small, well isolated
> change. The patch can give a very noticable improvement in kernel boot
> times on affected systems, for example with one ARM system this reduces
> the total time to boot the kernel by more than a third.
>
> Would you consider this patch for stable? It doesn't quite fit within
> the criteria but you've indicated in the past that such isolated and
> well supported changs can be acceptable anyway. If it's not OK for
> stable it seems like it should be a good candidate for LTSI.
It's a one-line change that seems well tested and provides a noticed
speedup, so yes, I can take it for the 3.10-stable tree, thanks.
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Possible stable fix for decompressor speed
2014-01-28 16:14 Possible stable fix for decompressor speed Mark Brown
2014-01-28 16:28 ` Greg Kroah-Hartman
@ 2014-02-03 13:59 ` Luis Henriques
1 sibling, 0 replies; 3+ messages in thread
From: Luis Henriques @ 2014-02-03 13:59 UTC (permalink / raw)
To: Mark Brown
Cc: Greg Kroah-Hartman, Jon Medhurst, Alexandre Courbot, stable,
linaro-kernel, linux-kernel
On Tue, Jan 28, 2014 at 04:14:28PM +0000, Mark Brown wrote:
> The changes in patch 1431574a1c4c (lib/decompressors: fix "no limit"
> output buffer length) avoid doing decompression a byte at a time when
> decompressing into high physical addresses using a small, well isolated
> change. The patch can give a very noticable improvement in kernel boot
> times on affected systems, for example with one ARM system this reduces
> the total time to boot the kernel by more than a third.
>
> Would you consider this patch for stable? It doesn't quite fit within
> the criteria but you've indicated in the past that such isolated and
> well supported changs can be acceptable anyway. If it's not OK for
> stable it seems like it should be a good candidate for LTSI.
Thanks Mark, I'm queuing this for the 3.5 and the 3.11 kernels as well.
Cheers,
--
Luis
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-01-28 16:28 ` Greg Kroah-Hartman
2014-02-03 13:59 ` Luis Henriques
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