[ZEN-KERNEL] 3.10-zen21 "Cheap and Easy" (May 20)

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tauzins

Senior Member
Oct 11, 2007
355
29
Orlando, FL
Yea sorry about that quote, and one last question does the stock built in power saving mode on LP still work with this kernel? And some reason my phone still has that 4th core shutdown issue, or it sitting at max. any suggestions?
 
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flyinj54

Senior Member
Sep 14, 2011
1,019
266
Ohio
@bbedward I know you're busy guy bro and I don't like bugging and I don't like the people on here that bug but I miss your kennel. Is this safe to run with the newest stock google 5.1.1 image? I know your kind of waiting for Android marshmallow hopefully you will release something then
 

bbedward

Inactive Recognized Developer
Jun 6, 2010
1,892
2,574
Cleveland, OH
@bbedward I know you're busy guy bro and I don't like bugging and I don't like the people on here that bug but I miss your kennel. Is this safe to run with the newest stock google 5.1.1 image? I know your kind of waiting for Android marshmallow hopefully you will release something then

Yea new job and summer time have been quite busy for me.

I had been working on some more game changer stuff for the CPU scheduler, but never finished it. I'll work to get something up once 6.0 is up/complete. I don't plan to support 5.x anymore after 6.0 comes out.

I will be getting the Nexus 6P however :), but will probably take til November to ship.
 

trickster2369

Senior Member
Feb 15, 2011
2,620
1,002
SD
Yea new job and summer time have been quite busy for me.

I had been working on some more game changer stuff for the CPU scheduler, but never finished it. I'll work to get something up once 6.0 is up/complete. I don't plan to support 5.x anymore after 6.0 comes out.

I will be getting the Nexus 6P however :), but will probably take til November to ship.

Excellent! Still the only kernel I use.

It's all just an illusion
 

ztotherad

Senior Member
Aug 17, 2011
2,784
616
Illinois
Yea new job and summer time have been quite busy for me.

I had been working on some more game changer stuff for the CPU scheduler, but never finished it. I'll work to get something up once 6.0 is up/complete. I don't plan to support 5.x anymore after 6.0 comes out.

I will be getting the Nexus 6P however :), but will probably take til November to ship.
hopefully you'll still be supporting the nexus 6 too, lol. absolutely love your kernel!
 
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lexus91

Member
Apr 7, 2015
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23
Yea new job and summer time have been quite busy for me.

I had been working on some more game changer stuff for the CPU scheduler, but never finished it. I'll work to get something up once 6.0 is up/complete. I don't plan to support 5.x anymore after 6.0 comes out.

I will be getting the Nexus 6P however :), but will probably take til November to ship.

i really hope you'll be able to optimize the kernel for 6.0. I missed zen on my n6
 

marcp39

Senior Member
Mar 17, 2009
99
7
@bbedward I've been using your kernel with AICP rom for several weeks now, I'm really satisfied with it. But with the build 20151015 + Zen Overclock Enable v2 my Nexus seems to bootloop !
The wifi access point does not seem to work with your kernel too, any idea ?
 

bbedward

Inactive Recognized Developer
Jun 6, 2010
1,892
2,574
Cleveland, OH
@bbedward I've been using your kernel with AICP rom for several weeks now, I'm really satisfied with it. But with the build 20151015 + Zen Overclock Enable v2 my Nexus seems to bootloop !
The wifi access point does not seem to work with your kernel too, any idea ?

@bbedward - Is development on zen kernel dead? I was holding out hope for a 6.0 release :(

Yea sorry guys - I got caught up with starting a new job and moving and graduating that I never got back around to working on the nexus 6.

I'd call it dead here, but many others are using BFS and such still - like hellscore.

I have ordered a 6P and will be getting it in about a week or so, so keep an eye out for 3.10-zen1 in the 6P forums - if you upgrade :)

The 6P is also an MSM device and using linux 3.10, so when I do a new port of BFS and some of the other new goodies related to it - guys like hellscore and others could likely apply those things here.
 

elkay

Senior Member
Apr 6, 2005
693
285
github.com
Yea sorry guys - I got caught up with starting a new job and moving and graduating that I never got back around to working on the nexus 6.

I'd call it dead here, but many others are using BFS and such still - like hellscore.

I have ordered a 6P and will be getting it in about a week or so, so keep an eye out for 3.10-zen1 in the 6P forums - if you upgrade :)

The 6P is also an MSM device and using linux 3.10, so when I do a new port of BFS and some of the other new goodies related to it - guys like hellscore and others could likely apply those things here.

Rut roh! I'm on F2FS.. looks like no M for me.
 

wrongway213

Recognized Developer / Recognized Contributor / Re
Jul 27, 2014
5,071
8,815
32
Canton, OH
Yea sorry guys - I got caught up with starting a new job and moving and graduating that I never got back around to working on the nexus 6.

I'd call it dead here, but many others are using BFS and such still - like hellscore.

I have ordered a 6P and will be getting it in about a week or so, so keep an eye out for 3.10-zen1 in the 6P forums - if you upgrade :)

The 6P is also an MSM device and using linux 3.10, so when I do a new port of BFS and some of the other new goodies related to it - guys like hellscore and others could likely apply those things here.

You'll be missed on the 6 man! I suppose I'll hold NE OH down.. if only I had a game changing kernel to drop :p
Thanks for all that you brought to development on this device -to this day i still run Zen-decision and nothing else with Elite Kernel and it is awesome.
 

Xileforce

Senior Member
Feb 27, 2012
3,057
3,125
Yea sorry guys - I got caught up with starting a new job and moving and graduating that I never got back around to working on the nexus 6.

I'd call it dead here, but many others are using BFS and such still - like hellscore.

I have ordered a 6P and will be getting it in about a week or so, so keep an eye out for 3.10-zen1 in the 6P forums - if you upgrade :)

The 6P is also an MSM device and using linux 3.10, so when I do a new port of BFS and some of the other new goodies related to it - guys like hellscore and others could likely apply those things here.

Awesome man :)

Just curious, how well will bfs play with all of the added hmp stuff required for the big.little cluster management? It seems like most of that may be deeply reliant on CFS from what I've seen, so I would assume it would have to be added into bfs somehow as well? Then again, you are a pro, so you probably can make it work somehow.

---------- Post added at 11:34 PM ---------- Previous post was at 11:32 PM ----------

You'll be missed on the 6 man! I suppose I'll hold NE OH down.. if only I had a game changing kernel to drop :p
Thanks for all that you brought to development on this device -to this day i still run Zen-decision and nothing else with Elite Kernel and it is awesome.

NE Ohio will not be missed :p you Ohioans have already taken over xda.
 

bbedward

Inactive Recognized Developer
Jun 6, 2010
1,892
2,574
Cleveland, OH
Awesome man :)

Just curious, how well will bfs play with all of the added hmp stuff required for the big.little cluster management? It seems like most of that may be deeply reliant on CFS from what I've seen, so I would assume it would have to be added into bfs somehow as well? Then again, you are a pro, so you probably can make it work somehow.

---------- Post added at 11:34 PM ---------- Previous post was at 11:32 PM ----------



NE Ohio will not be missed :p you Ohioans have already taken over xda.

Yea the stuff for hmp/big.LITTLE is pretty deep in the CPU scheduler. It's just a matter of implementing all the functionality to BFS. I can do it though ;)
 

slider112

Senior Member
Sep 9, 2010
423
125
Samsung Galaxy S20
Sad there won't be a marshmallow release for the N6 :( I ran hellscore for a bit and liked it, but flar's DT2W gestures aren't included in the kernel, and hell's has said repeatedly he won't add them. Unfortunately that's a deal breaker for me, as they work waaaayyyy better than the stock google implementation.

No plans to update to the N6P right now, but if I do I know right where I'm going for my kernel :D
 

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    Pushbullet: https://www.pushbullet.com/channel?tag=zen
    zen_logo_copy.png

    But you say I'm just a friend

    Project Background
    First of all. I like the nexus 6. Actually, I really really like the nexus 6. I think the device from factory performs quite marvelously, especially since the 5.1 update. Because of this, I am actually pretty content with running the stock kernel. "But BB...What about INTelligentSuperBOOSTXX5MillionPOINT5MegaBlast?!?!?!? Can you add this!?". While I appreciate all the great and free work that several great individuals do for the community. I personally don't see the need to alter any of these MSM/Board drivers a whole lot - not on these latest generation of devices. Things run pretty well I think.

    "Why don't you just run the stock kernel then you sick low-life waste of space?"
    Because, I still think improvements can be made.
    I think there's a lot of good intentions out there to make improvements in the kernel-space, BUT:
    I've observed a variety of things that were prevalent a couple of years ago and that are still prevalent today. (1) A lot of small things are changed - and advertised as a huge improvement, (2) some tunables are adjusted and advertised as a huge change/improvement but end up being a regression because they were never tested, or (3) some code is merged that causes regressions and it turns out that self-inflicted bugs are being chased around.

    Zen is an attempt at improving the stock kernel. That's it.

    Project Summary
    The Zen kernel has always been oriented at improving the experience for desktop mobile users as much as possible. This iteration of the series is no different. The goal is simple: Improve the experience.

    BFS CPU Scheduler
    BFS is an alternative CPU scheduler to the stock kernel's CFS. BFS features a simple single-runqueue O(n) earliest virtual deadline first design. There is no need for excessive balancing to achieve fariness on multiple runqueues - fairness is ensured by deadlines.

    The goal of the Brain **** Scheduler, referred to as BFS from here on, is to completely do away with the complex designs of the past for the cpu process scheduler and instead implement one that is very simple in basic design. The main focus of BFS is to achieve excellent desktop interactivity and responsiveness without heuristics and tuning knobs that are difficult to understand, impossible to model and predict the effect of, and when tuned to one workload cause massive detriment to another.

    BFS is tweaked towards human perception. It is not a real-time scheduler (like the SCHED_DEADLINE policy/scheduling in 3.14+) nor does it use runtimes+red/black trees to figure out fairness. It uses deadlines with the 6ms rr_interval based on the fact that humans cannot detect jitters until >= 7ms.

    Anyway, not going to get into it much but you may find more information in post 2, or throughout this thread (I explained a bit more details about it around page 4).

    Also, check these out:
    BFS FAQ
    BFS Wikia

    Android/MSM 3.10 BFS Port
    What is different about this and the 3.10-ck1 bfs v440 patch available on ck.kolivas.org
    • Backport fixes and features (not SMT NICE) from up to bfs v460ish
    • Some of Alfred Chen's upstream synchronization and refactoring of BFS methods (linux-3.18/19-gc branch)
    • My own syncing with mainline as well as backporting
    What does this mean
    • Suspend/Wake issues that were killer on bfs v440 for 3.10 are not present in this port - these issues have been resolved.
    • You should NEVER report any issue related to this kernel upstream. Not android, linux, or BFS related. Do not report any issues anywhere but here.
    "How about the performance?"
    This kernel is all about interactivity by default.

    The default rr_interval is set to 6. The logic is the human eye cannot detect jitter until about 7ms. Try lowering it if you want to increase interactivity. Try increasing it to achieve higher thoroughput.
    -------------------------
    Zen/Shamu Features
    • BFS CPU Scheduler
    • @flar2 Wake Gestures
    • @savoca KCAL Screen Color Control
    • @imoseyon Vibration SysFS interface
    • USB Fastcharge Support
    • Fsync SysFS Interface
    • Overclocking support
    • Flar2 userspace CPU voltage control
    • f2fs support and latest f2fs: f2fs/dev (even with ZenyKernel zip)
    • FIOPS + BFQ + SIO in addition to the stock ROW, CFQ, Deadline, No-op I/O schedulers
    • Several misc. CAF/msm + upstream updates/fixes.
    • Forced encryption disabled. (Even With ZenyKernel zip)
    • Added init.d support (ZenyKernel is up to your existing ROM/kernel)
    • selinux adjustments for viper4android and other things (ZenyKernel is up to your existing ROM/kernel)
    • Compatible with most ROMs, use ZenyKernel zip if there's compatibility issues.
    • Added zRam support
    • MPDecision disabled by default, replaced by touchboost listener + ZenDecision 2.0
    • ZenyKernel based on @osm0sis AnyKernel2 to use for roms who break compatibility with stock ramdisk

    I work based on real results from user experience, not numbers. I don't claim anything as a big deal if it isn't one. Zen is a no-nonsense, well-tested kernel making real improvements to interactivity in the kernel space.
    ---------
    Releases
    All of these builds are for android 5.1 and above, unless otherwise noted

    Wipe /cache before flashing for best results

    Versions
    - Recovery Zip: Kernel+Ramdisk: Use this on a stock/stock-like rom, or on a rom without support for things like viper4android or init.d support. Flash in recovery.
    - Boot.IMG: Kernel+Ramdisk: Same as recovery zip, except in the raw boot.img form. Can be flashed in fastboot, flashify, etc.
    - ZenyKernel Zip: Kernel Only (+ no force encryption +f2fs support +zen settings): Will use the exact same ramdisk you already have. If you have issues with the other full versions, then dirty flash your rom and this on top of it.

    3.10-zen21 "Cheap and Easy"
    Changes:
    • Compile with GCC 5.1
    • Several bcmdhd/wifi driver updates
    • Misc. CAF updates
    • Fix come cores sticking to performance governor

    3.10-zen21 Recovery Zip Download
    3.10-zen21 boot.img (install via fastboot/twrp IMG) Download
    3.10-zen21 ZenyKernel Zip (Use on top of ROM dirty flash if issues with the above two)

    Legacy Releases

    3.10-zen20_rev2 "Grad Party"
    Changes:
    • Disable MPDecision by default
    • ZenDecision 2 - Driver to ensure all cores are online when they are supposed to be online (tunables in /sys/kernel/zen_decision)
    • TouchBoost generic interface from franco, but modified for globalization
    • CPU-BOOST: Strip all existing input_boost functionality, use the existing parameters for the new touchboost interface
    • Slub: Update to newer upstream version of the mem. allocator ported by @XileForce
    • OC: Add 3.09GHz support (requires v2 of zen_max_freq zip)
    • msm_hsic wakelock slider...
    • f2fs: numerous upstream updates
    • conservative: add franco's twostep counter functionality
    • conservative: adjust default settings
    • interactive: adjust default settings
    • ondemand: Update frequency decision making from upstream
    • ondemand: Adjust defaults to be less aggressive
    • BFQ default I/O scheduler - based on significant interactivity improvement benchmarks on solid state and emmc memory.
    rev1 fixes issue setting bat_threshold_ignore in ZenDecision
    rev2 fixes issues with f2fs

    3.10-zen20 Recovery Zip Download
    3.10-zen20 boot.img (install via fastboot/twrp IMG) Download
    3.10-zen20 ZenyKernel Zip (Use on top of ROM dirty flash if issues with the above two)

    3.10-zen19 "Show Stopper"
    Changes:
    • Revert to MPDecision by default. I don't have the time to fully implement a replacement ATM
    • BFS: Sync try_to_wakeup_* and ttwu_*
    • BFS: Replace resched_task with resched_curr
    • BFS: add soft_affined flag
    • BFS: sync context_switch and finish_task_switch
    • F2FS: Numerous upstream updates
    • MSM/KGSL: CAF Fixes/Updates
    • MSM/MDSS: CAF Fixes/Updates
    • MSM/mmc: CAF Fixes/Updates
    • MSM/vidc: CAF Fixes/Updates
    • MSM/QoS: CAF Fixes/Updates
    • Misc general upstream updates
    • Wake Gestures: Disable haptic by default

    3.10-zen19 Recovery Zip Download
    3.10-zen19 boot.img (install via fastboot/twrp IMG) Download
    3.10-zen19 ZenyKernel Zip (Use on top of ROM dirty flash if issues with the above two)

    3.10-zen18 "Think Twice"
    Changes:
    • Disable MPDecision by default
    • Delegate MPDecision's input boosting (raising min_freq) to cpu-boost
    • Default cpu-boost touch boost set to 2s @ 1.497GHz, configurable in user space
    • ARM Updates
    • Some BFS updates
    • Fair Queue packet scheduler (Queue discipline)
    • Heavy-Hitter Filter Qdisc
    • PIE AQM Qdisc
    • I/O Scheduler: Change default deadline scheduler settings
    • I/O Scheduler: Add simple I/O scheduler v0.3 (user request - default remains CFQ)
    • ARM/Crypto: optimized SHA-256/224 (faster encryption performance)
    • Kcal updates
    • F2FS updates from upstream
    • Standard ramdisk support for CM12.1 and friends
    The net schedulers are probably useless to the average user, but harmless. A couple people who like to play with network stuff may want to play around with them by using the "tc" command. If you aren't sure you don't need to do anything :silly:

    3.10-zen18 Recovery Zip Download
    3.10-zen18 boot.img (install via fastboot/twrp IMG) Download
    3.10-zen18 ZenyKernel Zip (Use on top of ROM dirty flash if issues with the above two)

    3.10-zen17 "Epidemic"
    Changes:
    • Fix GPU frequency displaying low power modes
    • MDSS/Panel: misc. updates
    • MM: Misc upstream updates
    • CPUFreq: General CPUFreq driver updates/fixes
    • CPUFreq/Interactive: Numerous updates
    • BCMDHD: Reduce packet timeout, supposed to reduce wlan_rx wakelock
    • MSM/Power: quickwakeup driver from motorola + implementation
    • MSM/PM: Replace BUG_ON usage with correct solutions
    • AnyKernel: Remove device check, some devices that identified as something besides "shamu" had issues flashing.

    3.10-zen17 Recovery Zip Download
    3.10-zen17 boot.img (install via fastboot/twrp IMG) Download
    3.10-zen17 AnyKernel Zip (Use for CM 12.1 or other roms that change ramdisk/sepolicy things)

    3.10-zen16 "Yippee Ki-Yay"
    Changes:
    • Revert ext4/3.18 backport which caused periodic lockups.
    • Merge up ext4 from v3.10.74 in lieu of the above
    • Add faux sound support
    • Adaptive LMK default
    • msm: vid coder possible null pointer fix from CAF
    • msm: mdss/panel fixes from CAF
    • kmemleak reporting improvements from upstream

    3.10-zen16 Recovery Zip Download
    3.10-zen16 boot.img (install via fastboot/twrp IMG) Download
    3.10-zen16 AnyKernel Zip (Use for CM 12.1 or other roms that change ramdisk/sepolicy things)

    3.10-zen15 "Unbroken"
    Changes:
    • All the great changes of zen14 except without the BFS LLC cpumask selection - was an issue causer
    • Updated kcal (I forgot to merge into 14)

    3.10-zen15 Recovery Zip Download
    3.10-zen15 boot.img (install via fastboot/twrp IMG) Download

    3.10-zen14 "Flight School"
    Changes:
    • BFS: Full cpumask LLC cpu selection from -gc
    • BFS: Some trivial cleanups and fixes
    • Sched/BFS: Brought in the scheduler attr stuff from v3.14
    • rtmutex: deadlock detect fixes from upstream, prio. boost support for __setscheduler
    • Everything: Dozens and dozens of relevant i2c/usb/pinctrl/others race condition fixes, memory leak, deadlock fixes, etc. from upstream v3.10.y (without pulling it all I cherry picked relevant stuff)
    • VMA cache from upstream
    • ARM fixes from v3.10.y
    • Asynchronous I/O updates and unnecessary plug I/O removed for SSDs
    • Just dumped all my KGSL changes and sync'd with newest stuff from leankernel because i was too lazy to bisect and determine what was causing random page faults (they may still be there, they are on stock kernel too)
    • MSM: Updated sound soc
    • CM12.1 and friends AnyKernel zip added

    3.10-zen14 Recovery Zip Download
    3.10-zen14 boot.img (install via fastboot/twrp IMG) Download
    3.10-zen14 AnyKernel Zip (Use for CM 12.1 or other roms that change ramdisk/sepolicy things)

    3.10-zen12 "On top of the World"
    Changes:
    • BFS: Sync up some tick accounting from upstream
    • LEDS: Merge in 13 or so patches. Fixes bugs such as concurrency issues as well as adds some features
    • MDSS: Merge in over a dozen patches, refactorizations, and bug fixes
    • Crypto: Update NEON/AES module

    3.10-zen12 Recovery Zip Download
    3.10-zen12 boot.img (install via fastboot/twrp IMG) Download

    3.10-zen11 "Too Fast, Too Furious"
    Changes:
    • Fix a bug in modem that I created
    • BFS: Add grq lock for priodl (alfred chen -gc)
    • BFS: Fix a potential bug but probably not in __schedule
    • Proc/MMU: Merged a bug fix and cleanup patchset.

    3.10-zen11 Recovery Zip Download
    3.10-zen11 boot.img (install via fastboot/twrp IMG) Download

    3.10-zen10 "Interstellar"
    Changes:
    • Reverted the red/black tree change to LowMemKiller. I observed some issues with it, perhaps I was missing fixes for it. Certainly the RBTree selection is much faster than the previous iterative method. But how much do we really care about the performance of LMK with 3GB ram?
    • Upstream CFQ bug fixes
    • (1) SMP: Added wake_up_all_idle_cpus function
    • (2) BFS: Added wake_up_if_idle function
    • (3) CPUIdle: Use wake_up_all_idle_cpus instead of old kick_all method. Should result in reduced cpuidle latency/better performance
    • Adreno: revert to stock wake-up latency of 490, from 101.

    3.10-zen10 Recovery Zip Download
    3.10-zen10 boot.img (install via fastboot/twrp IMG) Download

    3.10-zen9 "Sunshine and Whiskey"
    Changes:
    • Completely rebased my entire tree. Based on stock/msm tree again.
    • Pulled in all VM/MM updates from linux-3.10.y
    • Updated f2fs to latest f2fs/dev.git (Up to "f2fs: do not recover wrong data index")
    • Fix a KGSL bug that would result in page faults
    • Updated MSM V4L2 video driver (msm: vidc)
    • Misc. updates throughout the kernel and MSM to resolve potential memory leaks
    • Built a new compiler from latest linaro, building with that now instead of my antique one.

    3.10-zen9 Recovery Zip Download
    3.10-zen9 boot.img (install via fastboot/twrp IMG) Download

    3.10-zen8 "Notorious Z"
    Changes:
    • Repair self-inflicted wounds
    • KGSL+Adreno fixes
    • Buy food for phil the cat
    • Buy coffee
    • Pick up jacket from dry cleaner

    3.10-zen8 Recovery Zip Download
    3.10-zen8 boot.img (install via fastboot) Download

    3.10-zen7 "Space Bound"
    Changes:
    • BFS: fix hotplug bug related to affinity set/get
    • block: Add FIOPS I/O scheduler
    • ARM: numerous upstream updates/fixes
    • MSM: usb/bam numerous fixes
    • MSM: mdss numerous fixes
    • MSM: kgsl numerous fixes
    • MSM: camera numerous fixes

    3.10-zen7 Recovery Zip Download
    3.10-zen7 boot.img (install via fastboot) Download

    3.10-zen6 "Morning After"
    Changes:
    • qcom-cpufreq allow a boot parameter to specify max_freq, which determines how to populate the frequency table. By default it is the stock 2.6GHz. If you use the aroma zip at the end of this post you can choose up to 3.03GHz. This kernel code/method is from @flar2 I only made minor/trivial changes to it and hacked up the aroma so people can change the boot parameter easily..
    • Changed f2fs mount options again, for more stability

    3.10-zen6 Recovery Zip Download
    3.10-zen6 boot.img (install via fastboot) Download

    3.10-zen5_rev1 "Day Drinking Sunday = Rough Monday"
    Changes:
    • Added kexec-hardboot support for multirom
    • Adjusted f2fs default mount options (nobarrier on /data) (inline_dentry, extent_cache on /data and /cache). Zen4 f2fs was acting really slow, this fixes it
    • Build f2fs with security labels for selinux
    • Added BFQ v7r7
    • Added 2.95GHz and 3.03GHz overclock steps
    • BFS: refactor sched_init_smp
    • BFS: cleanup/remove unused above_background_load function

    3.10-zen5 Recovery Zip Download
    3.10-zen5 boot.img (install via fastboot) Download

    3.10-zen4 "Bottoms Up"
    Changes:
    • Merged v3.10.73 from linux-stable/linux-3.10.y
    • Overclock to 2.9GHz
    • Userspace voltage control from flar2
    • f2fs support and latest f2fs/linux-3.10 merged
    • ext4 3.18 backport, from ext4/backport-for-3.10
    • BFS rr_interval set back to default of 6
    • Several CAF KGSL/MDSS Fixes/Improvements
    • I/O Deadline some tweaks

    3.10-zen4 Recovery Zip Download
    3.10-zen4 boot.img (install via fastboot) Download
    3.10-zen4 boot.img (use for f2fs, has security labels for selinux - Zen4 forgot to include it)

    3.10-zen3 "Walking Tall"
    Changes:
    • Fixed issue with KCAL app caused by zen2 ramdisk changes
    • Reverted culprits of random OOPs' and PANIC issues
    • Added vibration sysfs interface (same one as leanKernel)
    • Support for frequency mitigation (from imoseyon). If you just want to change the battery throttling I suggest you see post #2 instead though
    • 1 misc. change
    • Internal changes that make me feel good inside

    3.10-zen3 Recovery Zip Download
    3.10-zen3 boot.img (install via fastboot) Download

    3.10-zen2 "Where is the love?"
    Changes:
    • Synced up some ramdisk stuff from imoseyon for other rom/CM compatibility
    • Added a fix from v3.10.51 to fix random oops' caused by my compiler

    3.10-zen2 Recovery Zip Download
    3.10-zen2 boot.img (install via fastboot) Download

    3.10-zen1 "Dollar Drink Night"

    3.10-zen1 Recovery Zip Download
    3.10-zen1 boot.img (install via fastboot) Download


    ZenDecision (zen20+)
    You can still turn on MPDecision without any ill effects if desired
    As of 5.1+ MPDecision is somehow responsible for at least the following:
    • Raise MIN_FREQ to 1497MHz for 3 seconds on touch events
    • Ensure CPUs come online after certain events, like thermal events (due to low battery for example)
    User configurability is sacrificed when it is enabled. For example: changing minimum CPU frequency is not possible, nor is changing the touchboost frequency or duration possible. Simply disabling MPDecision results in the permanent disabling of CPUs in certain situations (until the user either reboots, or manually turns them on again).
    ZenDecision is a simple "handler" for to keep CPUs online by the following logic:
    • When screen comes on, make sure all CPUs are online if current battery level is above bat_threshold_ignore
    Simple, not a complete replacement for MPDecision. Just a handler for the event of cores never coming back online. Touchboosting is now configurable through the standard cpu-boost module parameters.
    ZenDecision tunables (/sys/kernel/zen_decision/):
    • enabled (0=disabled, 1=enabled): Enable/Disable the driver from doing any work
    • wake_wait_time (0-60000 ms, 1000 by default): How long to wait to execute CPU_UP work after screen comes online.
    • bat_threshold_ignore(1-100, 0=disabled, 15 by default): The battery percentage to ignore CPU_UP operations. If current battery level is below this level, then the driver is essentially disabled.

    How to enable overclocking (zen6+)
    If your device is unstable at the overclocked frequencies, it is a hardware limitation with your device. Do not report it as a bug
    To enable overclocking on zen6 or newer, you will need to use the recovery zip/aroma below.
    You choose the max frequency you want, it pulls the boot.img from the device, adds a boot parameter specifying the OC frequency.
    If you are not on zen6 or newer it will have no affect.
    This does not install a kernel, you still have to install the kernel from one of the links above
    Zen Overclock Enable v2
    3.09GHz step only supported on zen20+

    Thanks guys, and enjoy. Feedback is always appreciated.

    XDA:DevDB Information
    Zen Kernel, Kernel for the Nexus 6

    Contributors
    bbedward, purian23
    Source Code: https://github.com/bbedward/ZenKernel_Shamu/

    Kernel Special Features: Android/MSM BFS Port, kcal, gestures, cool stuff

    Version Information
    Status: Stable
    Current Stable Version: 21
    Stable Release Date: 2015-05-20

    Created 2015-03-24
    Last Updated 2015-05-20
    30
    To say I have been incredibly busy is an understatement.

    However, I've finally received some incredible offers to start my career as a software engineer.

    In celebration of the whole process finally coming to an end I will be finalizing and working on the reboot of zen kernel :highfive:
    29
    Hey guys,

    I just wanted to toss this out there an say i'm proud of @bbedward! Today, he Graduates from the University of Toledo with his Software Engineering Degree (Computer Science & Engineering) with a Bright Future! He already has options at Oracle and GE as soon as he steps foot back in his hometown of Cleveland!

    I honestly feel like his big brother with all the BS'n we've done over the past few years. He's taught me a lot (even though the punk is younger lol) and I'm pretty sure I've given him so good life morals to go by haha. Join me in Congratulating @bbedward for not only his awesome kernels and tons of XDA Community involvement/help through the years, but for generally being a cool dude. We'll surely look forward to what he has in store next for the tech community.

    Thanks dude and Congrats

    Purian23
    23
    I accepted a full time, permanent java developer position at the Sherwin Williams headquarters in Cleveland. :)

    I start next Monday and am pretty excited :p
    22
    @purian23's original name for the last release is applicable for zen15.

    3.10-zen15 "Unbroken"
    Changes:
    • All the great changes of zen14 except without the BFS LLC cpumask selection - was an issue causer
    • Updated kcal (I forgot to merge into 14)

    3.10-zen15 Recovery Zip Download
    3.10-zen15 boot.img (install via fastboot/twrp IMG) Download
    3.10-zen15 AnyKernel Zip (Use for CM 12.1 or other roms that change ramdisk/sepolicy things)
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