[Kernel] [.38.8] intersectRaven's Kernel (AVS/CAVS)01/08/2011 22:00

[intersectRaven]

This is my own personally compiled kernel based on the latest kernel from Cyanogen's Github repository with Kmobs' undervolt modifications, CodeAurora's AVS code, pershoot and rotohammer's audio gain mod and several compiler optimizations based on initial idea from psyq.

Only major releases will be advertised here.
All changes since 05/05 can be found at my Euroskank host:
http://intersectraven.euroskank.com/kernels/
*Thanks to RyanMacG for the free hosting!

Old uploads with minor changes can be found at my MediaFire folder or my Bitpad folder:
http://www.bitpad.co.uk/intersectraven
http://www.mediafire.com/intersectRaven

Major features:
- based on latest Cyanogen Mod kernel source from his GitHub repository
- numerous compiler optimizations with a custom compiler by redstar3894
- all CPU power governors for user dependent tweaking of power saving method
- Hybrid AVS (Adaptive Voltage Scaling combined with Static Voltage Scaling) support for maximum possible power savings dependent on CPU requirements and a customizable version (CAVS) for people who like to tweak how far their N1s can go
- universal update.zip template made by Koush

Instructions:
1.) Reboot to recovery and flash the update.zip directly.

OR

Instructions for zImage and bcm4329.ko driver extracted from the update.zip(from command line):
1.) adb remount
2.) adb push bcm4329.ko /system/lib/modules
3.) adb reboot bootloader
4.) fastboot flash zimage zImage
5.) fastboot reboot

OR

Use ADB GUI by minooch found here:
http://forum.xda-developers.com/showthread.php?t=666964

*please note the instructions...push the wifi driver BEFORE rebooting for flashing zImage...if your wifi is turned on when you reboot before you pushed the wifi driver for the kernel, there is a chance that you will go into a bootloop due to the incompatible wifi driver!

Changelog:
20120108_2143:
- just merged pershoot's commits

20111203_11XX:
- enabled MSM EHCI

20111114_23XX:
- integrated CM's commits (mainly bluetooth and WiFi fixes)

20111111_19XX:
- compiled using updated Mjolnir/Linaro compiler hybrid (having problems with our Mjolnir GCC)
- enabled SYN_COOKIES as requested
- some tweaks to the VFS settings
- switched network scheduler to SFB
- switched TCP congestion to Veno from YeaH (seems it's better for devices with a greater chance of random drops of packets)

20111010_11XX:
- disable CleanCache for YAFFS (too complex to change)
- more proper reapplication of changes from 3.0

20111009_22XX:
- enabled CleanCache for YAFFS, EXT3 and EXT4 (experimental)

20111008_23XX:
- ported BogoMIPS calibration from 3.0
- added CleanCache from 3.0
- switched to SIO from BFQ
- block IO batching from 3.0
- activate_pages batching from 3.0

20110904_07XX:
- added SmartAssV2 CPU governor

20110828_13XX:
- fix AVS to actually work (see previous latest post for apology... )
*this should restore the instability on some devices that can't handle AVS

20110828_00XX:
- prevent excessive suspend attempts
- optimized sha1 implementation

20110813_15XX:
- increased NAND buffer to 8k similar to codeaurora's version
- enabled 8-bit transfers for when the MMC card supports it

20110724_20XX:
- SmartAss improvement from the test kernels
- AVS code improvement also from the test kernels (hopefully improved the stability)
- RCU optimizations
- updated Mjolnir compiler

20110713_10XX:
- re-hauled SmartAss governor:
* interactive threads instead of workqueues to improve responsiveness when ramping-up frequencies
* reduced stepping frequency to use lower frequencies more

20110707_08XX:
- fixed the Voice Search problem

20110706_09XX:
- code cleanup
- additional tweaks

20110628_09XX:
- ARM improvements to memcpy and memmove operations from Wildfire (arco's kernel source)
- cherry-picked serial number commit from CM kernel

20110608_21XX:
- rebased everything together with removal of worthless commits
- added 2 new governors from SavagedZen kernel (SavagedZen & InteractiveX)
- updated code of Smartass governor to the one in SavagedZen since it seems more updated than the one I found

20110527_21XX:
- new method for addressing slow writes on USB from CodeAurora (although it's still slow using native USB mount and I didn't test using another mounter)
- some SIRC potential bug fixes
- input event handling modification from Google

20110523_08XX:
- compiled using updated Mjolnir

20110522_11XX:
- upgraded to v2.6.38.7

20110521_15XX:
- interrupt masking
- smd_tty buffer limit implementation

20110519_22XX:
- fix for potential bug and power leak improvement in DSP driver
- GPIO tweaks

20110516_19XX:
- increased DMA zone to 14MB (may speed some things or may not)
- timer workarounds have been removed as they're unneccessary on Scorpion
- prevent reading from write-only registers (just silly)
- used relaxed access functions for some functions
- remove extra interrupts sent from the SMD channel

20110515_21XX:
- added another commit from android unmerged which implements a watchdog to catch lockups during device resume
- fix for wakelocks which addresses the problem where while being connected to a computer, any attempt to power up will result in display immediately shutting off with touchscreen buttons still on
- uses an updated Mjolnir compiler

20110514_17XX:
- rebased everything
- removed some commits which were useless on the N1
- more zen branches merged
- WiFi-Fast patch has been integrated in all kernels since it seems to have no effect on battery (no more separate WiFi-Fast release)

20110511_22XX:
- reverted a change made to PMEM driver since the commit it was reliant to was reverted (sorry! didn't notice this...I wasn't too critical of my earlier cherry-picks... )
Link to a file which contains all kernels:
http://hotfile.com/dl/117478444/390f688/intersectR_-_20110511_22XX.zip.html

20110510_18XX:
- updated to 2.6.38.6
- committed some more video driver commits from CodeAurora
Link to a file which contains all kernels:
http://hotfile.com/dl/117350839/0a9a504/intersectR_-_20110510_18XX.zip.html

20110509_14XX:
- merged some commits from Android repositories that were still unmerged yet may prove useful for Ashmem and RPC
Link to a file which contains all kernels:
http://hotfile.com/dl/117209820/5b7fe7b/intersectR_-_20110509_14XX.zip.html

20110507_21XX:
- even more improvements from CodeAurora
Link to a file which contains all kernels:
http://hotfile.com/dl/117048553/0831385/intersectR_-_20110507_21XX.zip.html

20110506_15XX-16XX:
- enabled cache error reporting as this is indicative of how tolerant your N1 is to AVS undervolting
- smartass governor (from Temasek)
*this was mistakenly included in the previous release
- a minor kernel scheduling statistic commit
Link to a file which contains all kernels:
http://hotfile.com/dl/116922979/5fb2ec0/intersectR_-_20110506_15XX-16XX.zip.html

20110505_16XX-17XX:
- updated Mjolnir compiler
Link to a file which contains all kernels:
http://hotfile.com/dl/116827854/5839b43/intersectR_-_20110505_16XX-17XX.zip.html

20110505_08XX-09XX:
- AVS and CAVS now both allow changing of voltages on-the-fly. The only difference now is that AVS is undervolted by default while CAVS is undervolted to the same voltages that CM uses in his SVS kernel
- uses eviollet's on-the-fly voltage modification system instead of the previous one I had which is a lot more flexible
Link to a file which contains all kernels:
http://hotfile.com/dl/116798881/0d5b5bf/intersectR_-_20110505_08XX-09XX.zip.html

20110503_09XX:
- updated to version 2.6.38.5
Link to a file which contains all kernels:
http://hotfile.com/dl/116600585/b76a4b6/intersectR_-_20110503_09XX.zip.html

20110502_10XX:
- synced with pershoot's latest modifications which mirror CM's latest addition with regards to USB accessory function (not too important I think since it seems to be for future ADB use)
- uses an updated Mjolnir compiler (20110429)
Link to a file which contains all kernels:
http://hotfile.com/dl/116528049/1865aa6/intersectR_-_20110502_10XX.zip.html

20110424_11XX:
- reverted WiFi driver to same version CM uses for mainline kernel to fix channel 11 issues with the newest one

20110422_12XX:
- updated to 2.6.38.4
- compiler updated

20110421_15XX-16XX:
- first files to be hosted by Bitpad (http://www.bitpad.co.uk/intersectraven/)
*Thanks to MajorProbes
- just a minor release since I only updated the compiler

20110416_20XX:
- several compiler optimizations enabled (loop unrolling, peeling, etc.)
- zen-kernel cherry-picks for memory and fs optimization

20110415_23XX:
- updated to 2.6.38.3
- compiled using latest Mjolnir with an experimental merge by redstar

20110409_23XX:
- integrated a bluetooth fix and MMC quirks improvement from official Google repositories

20110407_13XX-14XX:
- integrate CM commits on futex optimization and removal of dodgy optimizations

20110403_12XX:
- fix for USB transfer speed (should now hold at 1MB/s without dropping)

20110401_22XX-23XX:
- first 2.6.38.2 release based on pershoot's 2.6.38
- added the usual mix (AVS, SLQB, CodeAurora patches, etc.)
- compiled using Mjolnir GCC 4.6.1
- changed FPU optimization to NEON

20110328_08XX-09XX:
- updated to 2.6.37.6

20110328_07XX:
- compiled using Mjolnir GCC4.6.0
- enabled Link Time Optimization and Graphite Optimization (use Google for definitions)

20110326_08XX:
- updated BFQ to v2-r1

20110324_18XX:
- updated to 2.6.37.5

20110320_17XX:
- merged Nick Piggin's RCU patches which were originally for 2.6.38 (one of the things Linux was excited about according to Phoronix)

20110319_09XX:
- merged latest CM kernel commits which enables the ff:
- enabled RCU boost
- enabled touchscreen filter (reduce CPU load made by touchscreen)

20110315_22XX:
- updated to 2.6.37.4

20110312_23XX:
- round 2 of CM's wonk fix attempt integrated
- toolchain update
*for links, go to my MediaFire folder as specified above

20110311_1623:
- integrated cyan's wonk fix attempt
- VPN "fix" (I don't like this one since it's just a backport of the old PPP interfaces)
*for links, go to my MediaFire folder as specified above

20110308_2246:
- updated to .37.3
- based on CM's latest kernel source
- with SLQB and BFQ v2
- regular and customizable AVS
- some CodeAurora patches
*for links, go to my MediaFire folder as specified above

20110213_1506:
- corrected minimum voltage value to 800mV
CFS-HAVS-CM7-NOBOOST -> http://www.mediafire.com/?m32mi1744ksb55m

20110213_1035:
- test release for new AVS-CUSTOMIZEABLE build which allows for runtime customization of AVS minimum and maximum limiters for more flexible AVS voltages depending on your CPU tolerance (/sys/module/avs/parameters/avs_adjust)
- AVS debugging outputs can also be toggled in runtime (/sys/module/avs/parameters/avs_debug -> set to 0 to not display, 1 to display)
CFS-HAVS-CM7-NOBOOST -> http://www.mediafire.com/?bt7mmtlmg407ne1
*format for avs_adjust is:
frequency,minimum voltage,maximum voltage
e.g.
echo 245000,925,975 > avs_adjust
**AVS debugging output will be enabled by default when you modify the limits

Finally created a github to store all of my kernel modifications:
http://github.com/intersectRaven/

To follow me for updates on Twitter:
http://www.twitter.com/intersectRaven

 

[intersectRaven]

[Kernel] [.35.10, .37] intersectRaven's Kernel (HAVS-AXI-FM-720p-Zen)1/9/2011 10:13

Reserved for intersectRaven - Added 2post to allow OP to have more place for futur update

 

[britoso]

Finally a thread!
been using your kernels for some time now, good work!
---------------------------------------------------------------

Updates: I thought I'll use this space to provide some info since its right next to the OP

BFS:
BFS is the Brain **** Scheduler. It was designed to be forward looking only,
make the most of lower spec machines, and not scale to massive hardware. ie
it is a desktop orientated scheduler, with extremely low latencies for
excellent interactivity by design rather than "calculated", with rigid
fairness, nice priority distribution and extreme scalability within normal
load levels.
http://ck.kolivas.org/patches/bfs/bfs-faq.txt

CFS
Completely Fair Scheduler is the name of a task scheduler which was merged into the 2.6.23 release of the Linux kernel. It handles CPU resource allocation for executing processes, and aims to maximize overall CPU utilization while maximizing interactive performance.
http://en.wikipedia.org/wiki/Completely_Fair_Scheduler

Comparison of BFS vs CFS: http://www.cs.unm.edu/~eschulte/data/bfs-v-cfs_groves-knockel-schulte.pdf

Conclusion
The results indicate that CFS outperformed BFS with minimizing turnaround time but that BFS
outperformed CFS for minimizing latency. This indicates that BFS is better for interactive tasks
that block on I/O or user input and that CFS is better for batch processing that is CPU bound.

 

[jblazea50]

can i use this kernel along with the desire camera app?

 

[intersectRaven]

Finally a thread!
been using your kernels for some time now, good work!

Had my dog press the enter key to prevent me from chickening out.

 

[intersectRaven]

can i use this kernel along with the desire camera app?

I haven't tested it so I don't know if it needs something from the kernel to work.

 

[d.cortez]

@intersectRaven - in the http://forum.xda-developers.com/showthread.php?p=6003800#post6003800Audio Mod thread rotohammer incorporated settings that increased both the bluetooth and in-call/earpiece volume. is your audio fix for a headset/bluetooth headset and/or does it incorporate higher values for in-call volume as well? thanks!

 

[intersectRaven]

@intersectRaven - in the http://forum.xda-developers.com/showthread.php?p=6003800#post6003800Audio Mod thread rotohammer incorporated settings that increased both the bluetooth and in-call/earpiece volume. is your audio fix for a headset/bluetooth headset and/or does it incorporate higher values for in-call volume as well? thanks!

Hmmm...thanks for pointing that out. I'll probably release a new version later which will have this. (loading my Nexus Compilation Environment VM now...)

*Edit: I recompiled with the .min and .max settings he specified but reading further back it seems he changed some other things so I can't be sure if just this will provide the volume increase desired.

 

[intersectRaven]

@intersectRaven - in the http://forum.xda-developers.com/showthread.php?p=6003800#post6003800Audio Mod thread rotohammer incorporated settings that increased both the bluetooth and in-call/earpiece volume. is your audio fix for a headset/bluetooth headset and/or does it incorporate higher values for in-call volume as well? thanks!

Hmmm...thanks for pointing that out. I'll probably release a new version later which will have this. (loading my Nexus Compilation Environment VM now...)

*Edit: I recompiled with the .min and .max settings he specified but reading further back it seems he changed some other things so I can't be sure if just this will provide the volume increase desired.

 

[britoso]

I haven't tested it so I don't know if it needs something from the kernel to work.

It works. I thought you incorporated the audio fix yesterday too!

 

[intersectRaven]

It works. I thought you incorporated the audio fix yesterday too!

I just compiled one with higher settings based on rotohammer's research. I think I'll stick with the default ones in my previous version though so its okay to skip this latest one.

For those who wanted to try out the modified values:
http://www.mediafire.com/?dqynw1inh3y <= 2.6.32
http://www.mediafire.com/?mmjwxzjlmmw <= 2.6.33

 

[rotohammer]

I'm working on a mod that will allow us to change the min_vol and max_vol from a file. Kernel SOP dictates this not advised, but I don't have time to learn how to implement a procfs hook.

 

[intersectRaven]

I also used the voltages specified by kmobs so there should be no difference with the voltages. .32 is from the android kernel source while .33 is from cyanogen's. .32 is the stable kernel while .33 is still in its experimental stage.

 

[daedelus82]

Thanks a lot I've been looking for something like this!

 

[rheza02]

intersectRaven, any chance to release Overclock kernel ?
1267Mhz on the nexus one will be great. hahahaha

 

[intersectRaven]

intersectRaven, any chance to release Overclock kernel ?
1267Mhz on the nexus one will be great. hahahaha

haha...I'll think about it...I don't have the courage to try an OCed version though so you'll have to test it yourself if ever!

 

[d.cortez]

I just compiled one with higher settings based on rotohammer's research. I think I'll stick with the default ones in my previous version though so its okay to skip this latest one.

For those who wanted to try out the modified values:
http://www.mediafire.com/?dqynw1inh3y <= 2.6.32
http://www.mediafire.com/?mmjwxzjlmmw <= 2.6.33

i'm currently using MoDaCo Alpha 19, which reports using a 2.6.33.1 kernel. so i would use the 2.6.33 version, correct? just to confirm, are your volume values the same as used by rotohammer? also, where is the zImage stored on my device, that is if it's actually saved at all (yes, i am a newbie, lol). thanks!

 

[intersectRaven]

i'm currently using MoDaCo Alpha 19, which reports using a 2.6.33.1 kernel. so i would use the 2.6.33 version, correct? just to confirm, are your volume values the same as used by rotohammer? also, where is the zImage stored on my device, that is if it's actually saved at all (yes, i am a newbie, lol). thanks!

yes u would use the .33 if ever...the links u quoted does use rotohammer's values...and lastly, the zimage is flashed onto the image/kernel area in your device's boot partition...oh and no shame being a noob...we were all noobs once...

 

[www1]

This kernel crash on my nexus one with desire camera when I try to see a video.
Anyone can confirm this?

 

[daedelus82]

This kernel crash on my nexus one with desire camera when I try to see a video.
Anyone can confirm this?

I just recorded a video with the desire camera app and played it back fine.