[KERNEL] [6.0] almost-stock (aka ex big-bum) - Nexus 5 Android Development

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DOWNLOAD
HERE
Google Drive mirror
I'm not responsable for data loss or any damage to your phone if you're using my kernel. You flash this at your own risk. Always make a backup!
(You need SuperSU 2.50 for this kernel to work!)​
M/6.0 kernel:
Features:
new name: almost-stock, since it's... almost stock, but not really.
built on the base of latest Android 6.0 release, merged with franciscofranco's L kernel and CM/CAF12.1
built with -mcpu=cortex-a15 for enabling maximum performance with our Krait CPU.
reduced wireless wakelocks
underclocked GPU idle (GPU min/max 20/450MHz)
default CPU governor: CAF interactive, updated from CM/CAF12.1 branch.
built with cpu-boost driver to handle touchboost, default touchboost is set to 500ms and 1.2GHz
Motorola memory patches for ARM
default hotplug: MPDecision with updated rq_stats from CM.
I/O default schedueler: row
the famous I2C @ 19.2MHz, plus some other chips dropped at 19.2MHz and voltages lowered for internal components (Cl3Kener)
compilled with Linaro GCC (5.2.0) - arter's own build.
removed useless debug
workqueue udates from linux 3.7, power saving workqueues set on by default
selinux enforced (You need SuperSU 2.50 for this to work!)
partialsuspend enabled
various updates and fixes for net, mmc, thermal, selinux, block, cpufreq, sched, rcu, block
I probably forgot something
Credits:
neobuddy89, dorimanx, hellscore, franciscofranco, flar2, Cl3Kener
Christopher83 for Linaro GCC binaries, tutorials on how to compile Linaro, his Linaro binaries and tutorials
other people who work on Linux kernel.
arter97 for his GCC 5.2.0
Kernels from where I cherry-pick: Chaos/Hybrid - neobuddy89, Uber - Cl3Kener
Other guys from where I might cherry pick in the future.
Sources:
Kernel: ttps://github.com/StefanescuCristian/hammerhead
Ramdisk: https://github.com/StefanescuCristian/ramdisk_hammerhead
Toolchain:
https://github.com/arter97/linaro-lto
The attached images are from the KK version.
Oh, and if you want to build this for yourself, check this out!
XDA:DevDB Information
[KERNEL] [6.0] almost-stock (aka ex big-bum), Kernel for the Google Nexus 5
Contributors
big_bum
Source Code: https://github.com/StefanescuCristian/hammerhead
Kernel Special Features: GCC5
Version Information
Status: No Longer Updated
Current Stable Version: 2
Stable Release Date: 2015-11-01
Created 2014-07-07
Last Updated 2015-11-01

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Reserved
Old kernel info:
Which version do I need?
It's pretty simple and I think I structured the download sites pretty good. If you want another structure or you have ideas for improvements, then feel free to post them. Anyway:
For AOSP based ROMs (Mahdi, Paranoid, Liquid Smooth, etc) use the AOSP folder. If you didn't change the ROM to support f2fs or f2fs-all, you must use ext4 or mpd*.
For Cyanogenmod based ROMs (CM, Carbon, AOKP, etc) you must use the kernels from the CM folder (cm or cm-mpd) . You can flash a f2fs version on CM. Read post 2, the Q&A section.
*mpd stand for MPDecision (make poor decision). It's qualcomm's user-space implementation for plugging/unplugging the cores. Some people say it's bad, some people say it's good. I personally like it and use it

---

Reserved
Lollipop Kernel
Features:
backports from upstream for most of main components
exfat for mounting exfat formatted sticks via USB OTG
f2fs for mounting f2fs formatted sticks via USB OTG or if you have an f2fs formatted internal memory (use the same image for all combinations of f2fs formatted partitions).
for mounting OTG sticks formatted in NTFS/exFAT/f2fs/other filesystem I recommend this app. FAT formatted sticks will automount if you use CM (might work on AOSP too, I haven't tested it)
I also include cherry-picks from other N5 kernels (especially from Chaos/Hybrid - @neobuddy89, Uber - @Cl3Kener and Code_Blue - @eng.stk)
min default CPU freq: 300MHz
max default CPU freq: 2.26GHz
default CPU governor: impulse
available CPU governors: ondemand, bacon, performance, powersave, interactive
hotplug: msm_hotplug developed by myfluxi
cpu-boost driver from CM.
I/O readahead size: 512KB
I/O default schedueler: fiops
other available I/O scheduelers: noop, deadline, cfq, BFQ, tripndroid
GPU min/max 20/450MHz
GPU default governor: simple
other GPU available governors: ondemand, performance
color profiles. Based on franco, works with FKU or Nexus Display Control app.
savoca's KCAL
franco sound
CM sound patches
dynamic fsync
various memory improvements. This doesn't mean less consumed RAM, also free RAM is wasted RAM for linux. Also, read this: http://www.linuxatemyram.com/
msm limiter (limits screenoff freq to 1.2GHz)
KSM: Kernel Samepage Merging.
KSM merges memory pages from one app with another app, thus only loading one memory page, not two pages that are the same.
Let's say that app A has the page X loaded in memory. Let's say that app B loads pages X and Y in memory. KSM detects that and points app B to the memory address from page X loaded by app A. In the end we have this:
Without KSM:
A: X
B: X, Y
Total: X, X, Y
With KSM:
A: X
B: ^, Y
Total: X, Y
Click to expand...
Click to collapse
the famous I2C @ 19.2MHz, plus some other chips dropped at 19.2MHz
HTCP as default TCP congestion control. (I personally don't see any differences between different TCP Congestion Control algorithms)
other TCPCC available: reno, bic, cubic (I used this in DD-WRT), westwood (they say it's good for wireless/3G/4G devices), vegas, veno
compilled with latest Linaro GCC (4.9.3), and with SaberMod
removed useless debug
I probably forgot something
Q&A
- Is it stable/bug free?
- As stable/bug free as franco's kernel is.
- Does it score better in benchmarks?
- I think so. At least Antutu says so, in the integer and float benchmarks. Quadrant also says this. It's not a huge difference, and you can't see it with the naked eye. But I don't trust in benchmarks that much.
- How's the battery life?
- (From Reddit) "The same battery life you get with Franco, if not a little better. Optimization means better performance, better performance means less time executing the same code, less time online means more deep sleep. Idk how much better it is, but it's not worse, anyway."
How can I configure it?
1. Universal Kernel Manager (Synapse + Script). Flash kernel, flash the zip from the link, install Synapse. Read here for more info on frequency getting stuck at 1.2GHz. TL;DR: go and setup via Synapse how you want, then go to CPU Tab, set minimum freq to 300Mhz, apply, enjoy.
2. FKU
3. Kernel Tweaker
4. Trickster Mod, via scripts in init.d, etc.
Recommended & tested ROMs:
Optipop
SlimAOSP
Terminus
Blisspop
This doesn't mean that ROMs are not supported, jus that I haven't tested them. The ROMs from this list are working as they should with my kernel.
Rollback:
Rename /system/lib/hw/power.msm8974.so.bak to /system/lib/hw/power.msm8974.so
Rename /system/bin/thermal-engine-hh-bak to /system/bin/thermal-engine-hh
Reboot to the bootloader and flash stock Kernel by downloading the Nexus images and then fastboot flash boot boot.img
Start the phone
Reboot to bootloader again and flash what kernel you want, and then start the phone.
Special thanks for testing and help:
@_MirageX_ @dox81 [mention]@pianistaPL[/mention] [mention]@shadowdevil[/mention]
Special thanks for donations:
[mention]@Paddybecks87[/mention] and the guy from reddit (notable-_-shibboleth) who also uses my build of pf-kernel for Ubuntu. (If you see this and you have a XDA username, give me a PM to put you in the list here)
Sources:
Kernel: ttps://github.com/StefanescuCristian/hammerhead
Ramdisk: https://github.com/StefanescuCristian/ramdisk_hammerhead
Toolchains:
Linaro: https://github.com/Christopher83/arm-cortex_a15-linux-gnueabihf-linaro_4.9.git
SaberMod: https://github.com/AuxXxilium/sm-arm-cortex_a15-eabi-4.9
BbKT (Big bum Kernel Tweaker): https://github.com/StefanescuCristian/android-kernel-tweaker
fabi_92 said:
I use big bum as primary but with some secondary rom and some kernel doesn't work.
FIX:
-flash rom
-flash gapps
-flash big-bum
-flash zip EXT4 or F2FS
-done
Click to expand...
Click to collapse
Old kernel info:
I said last night that this kernel works on CM.
First of all, CM is CAF. Our kernel is not CAF. This means that some libraries are not compatible with our kernel and need to be changed to make it compatible. This is exactly what Calkulin made. He made a zip that contain non-CAF libs to boot stock AOSP kernels.
I took that zip, modified it and put our kernel in it. This is more like a hack, it's not the real CAF kernel!
Also, in the OP I said that this isn't CAF-compatible by default. This is what I was talking about. With a little hack, it can run on CM.
This has nothing to do with the kernel. It's all in the libs. I only made a simple/easy/convenient way to flash CM and this kernel together.
How to:
Scenario 1: You don't have CM installed, you want to install it.
1. Download CM(tested with 07.07 nightly) or CM-based ROM zip. (In theory it should work)
2. Flash CM/CM-based ROM, gapps. Read the ROM OP for more details.
3. Flash the latest kernel/zip from CM folder.
When updating the ROM, you must reflash the kernel zip file from CM folder.
When updating the kernel, you can flash the normal ext4 version (zip or img from AOSP folder), or the hacked CM one (the zip from CM folder).
Scenario 2: You have CM and you want to try this kernel.
1. Download and flash the kernel/zip from CM folder.
When updating the ROM, you must reflash the kernel zip file from CM folder.
When updating the kernel, you can flash the normal ext4 version (zip or img from AOSP folder), or the hacked CM one (the zip from CM folder).
QA:
-f2fs/f2fs-all version for CM?
-No.
First of all, CM formats partitions to ext4 when flashing. You must edit your updater-script for it to work. If you know this, then you know what I'm talking about in the next 2 paragraphs.
Second, you can make a flashable zip by yourself.
Third, it's easier to download the zip from the thread and flash it, then flash a f2fs/f2fs-all kernel. (AOSP folder, zip or img)
You just have to be carefull that if you're on f2fs-all, you must edit META-INF/com/google/android/updater-script from Calkulin's zip file: replace ext4 with f2fs. Repack, flash your zip, flash f2fs/f2fs-all kernel, enjoy.
-I have done what you said. I now run CM on f2fs/f2fs-all. What do I do in case of an update?
-Well, it depends.
For ROM update:
1. Flash CM ROM.
2. Flash the zip you made and flashed when you asked the previous question (third point)
3. Flash f2fs/f2fs-all kernel
For kernel update:
1. Flash the appropiate f2fs/f2fs-all kernel. (AOSP folder, zip or img)
Credits: Calkulin for his thread, zip, files and discovery.

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That's cool man ! Thank you for sharing this with us !
Sent from my Nexus 5 using XDA Free mobile app

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Nice one
Sent from my Nexus 5 using Tapatalk

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Thanks for sharing your kernel with us. Specs and notes sounds great, looking forward to running this.
-Sent from my Almighty Nexus 5 Hammerhead using XDA Premium 4 mobile app

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Best kernel in 'da hood !
WoW !

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Downloading. :good:

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No disrespect, but since this is based on Franco this should be in Android Development. The mods will more than likely move it there soon.
Sent from my Nexus 5 using XDA Premium 4 mobile app

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Welcome and very nice OP

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Best kernel name by some margin.

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This thread must be moved to Android Development as there are no "original" features here. Read rules before posting bro
Enviado do meu Nexus 5 através de Tapatalk

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No problem man. I'll report myself and tell a mod to move it.
EDIT: It's already reported.

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Dude take it easy "bro"..why do people get so upset?!? It's a freaking website forum...nothing more..people already mentioned it before you in a much much nicer way...thanks for the work OP it's great
Sent from my Google/LGE Nexus 5 Hammerhead

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I really didn't get upset.
I didn't know how else to move the thread, so I thought that reporting it is the way to go.

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Nice I'm gonna test it out great work man
Btw can live without it but gotta ask is dt2w included?
Sent from my Nexus 5 using Tapatalk

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big_bum said:
I really didn't get upset.
I didn't know how else to move the thread, so I thought that reporting it is the way to go.
Click to expand...
Click to collapse
@big_bum hey sorry man I wasn't talking to you...I was talking to TomorrowLand_Ace
Sent from my Google/LGE Nexus 5 Hammerhead

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Nice
Sent from my Nexus 5 using XDA Premium 4 mobile app

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Sounds awesome, trying out this kernel NOW! Thanks for sharing
Sent from my Nexus 5 using Tapatalk

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idriff said:
Nice I'm gonna test it out great work man
Btw can live without it but gotta ask is dt2w included?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
No. But if you want dt2w you can use Linaro. You'll loose bfq and franco sound patches.
Dt2w or s2w will never be great on this phone because of battery drain.
But we have a hardware pedometer in our phone, so theoretically all the apps that are tracking step numbers should not use any battery at all because they are not using the accelerometer. I guess we can't have it all.
Sent from my Nexus 5 using Tapatalk