[KERNEL] [G800F/M/Y] Spookcity_Kernel-N (For all 7.x custom ROMS)

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spookcity138

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Nov 9, 2015
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Works, no reboots with v5.0 on my device.

Thanks for sharing. It seems as if only a few have the random reboot issue now which makes it even more strange and more difficult to figure out. When it was happening with the 4.x versions I understood it. A lot of people were having this and the logs led me to what I thought it was and luckily it seems to have been the case,but now I'm just not sure. I will continue to investigate.
 
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spookcity138

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Nov 9, 2015
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Hi I installed version 5.0 and I'm getting random reboots within a few minutes of it being on. Version 3 worked fine.

Well,I guess you are one of those with these problems still too. I plan to try to compare my changes from version 4.0 to version 5.0 to see if I can tell what might be causing this. It's just difficult as I have not had a single reboot on version 5.0 and I know others that it is running smooth for. Plus the logs that others have kindly shared have not really helped me figure it out as of yet.
 

spookcity138

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I'm always on RR with my main device.
I think going back to stock firm for a new beginning was a good idea for me, but I know @Friedensfurz was going the same way.. -what could be the difference:confused:

If there is a way to help figured out the problem, let's know how we can do this.
It's a difficult issue.. At least as of now. Most logs haven't showed much that stood out to me. A few did,but one was a kernel panic caused by what I'm still unsure of because deciphering the backtrack is something I still need to learn properly. The other was a memory violation if I recall correctly. This also caused a kernel panic,but again the cause I'm not sure. It's just strange to me that it seemingly only effects some. I can't reproduce any of this on v5.0. Hopefully I'll have a bit of time soon to try to compare v4.0 and 5.0 and see if I can track down the cause.

Edit:
Out of curiosity could a few ppl run this in a terminal "cat /proc/cpuinfo” (without quotes) and look at the first line about processor and tell me your rev #

Sent from my SM-G800F using Tapatalk
 
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Pat750

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I have rev 3 and use version 5.0 for the last couple of days with AEX 4.5 and have no issues whatsoever. Didn't play with any settings and use standard options.
 

spookcity138

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I also have rev3 and have spontaneous reboots on RR :(
Yeah,I kinda figured this wasn't the cause,but wanted to just be 100% before I started spending time on other things. When I have time I will compare my changes between v4.0 and 5.0.

I have rev 3 and use version 5.0 for the last couple of days with AEX 4.5 and have no issues whatsoever. Didn't play with any settings and use standard options.
Same here. I used AEX for about a week and now I've been using AICP for the last few days and not a single reboot. Its a strange issue.
 

spookcity138

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Nov 9, 2015
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I am using RR 5.8.3 and with 5.0 I did not have a reboot so far (within the last few days). With 4.0(a) there were a few reboots.
Thanks for the feedback. I'm nearly positive that the reboots on v4.x were due to HZ being configured to 300 as opposed to 100. I also had reboots on those version and haven't on v5.0. That's what makes it more confusing to me,that some are still experiencing this problem.

Sent from my SM-G800F using Tapatalk
 

Friedensfurz

Senior Member
rev3. RR 5.8.4, the core of v5, no problems and reboots. A lot of changes, voltage, hotplug, I / O scheduler, virtual memory ... Everything works great.
The thing is I haven't messed with Kernel Adiutor at all. I have only installed Magisk additionally, then RR 5.8.4 by rendev version 13.8.17 and Magisk v13.6 beta as well as OpenGApps pico 130817 :/
 

Oleggluk

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Jul 29, 2015
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The thing is I haven't messed with Kernel Adiutor at all. I have only installed Magisk additionally, then RR 5.8.4 by rendev version 13.8.17 and Magisk v13.6 beta as well as OpenGApps pico 130817 :/

I also have rr 5.8.4 (13.8.17) and Magisk v13.6 (now updated to v14), but I do not use OpenGApps Pico., I use https://forum.xda-developers.com/android/development/microg-unofficial-installer-t3432360 . Perhaps a coincidence, but most who have any problems, use OpenGApps Pico.
 

spookcity138

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I also have rr 5.8.4 (13.8.17) and Magisk v13.6 (now updated to v14), but I do not use OpenGApps Pico., I use https://forum.xda-developers.com/android/development/microg-unofficial-installer-t3432360 . Perhaps a coincidence, but most who have any problems, use OpenGApps Pico.
Hmm,interesting. It's possible,although I'm currently running OpenGapps pico for the last week or so with no issues. I do generally use microG though.
I've been so busy I've yet to really look into this much. Hopefully I'll find a little time this weekend. Fingers crossed.

Sent from my SM-G800F using Tapatalk
 
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  • 18
    Code:
    /*
     * Your warranty is now void.
     *
     * I am not responsible for bricked devices, dead SD cards,
     * thermonuclear war, or you getting fired because the alarm app failed. Please
     * do some research if you have any concerns about features included in this kernel
     * before flashing it! YOU are choosing to make these modifications, DO NOT
     * point the finger at me for messing up your device.
     * this kernel is only for the S5 mini SM-G8OOF/M/Y (Exynos) Do Not Flash this on any other device!
     */

    19-10-2017 * Updated to v6.0 * Changes are in red or can be seen at the bottom of this post in the changelog: I am always applying patches to hopefully improve the kernel,so check out the "Patches and tweaks applied" section for a better view of the changes as well.

    Notes
    • ALWAYS read the "Known Issues" section before flashing. I will add issues I have noticed or have been told about. Some may be VERY important. If you fail to do this and experience an issue that is listed I can not help you!
    • SELinux is set to permissive in this kernel. You can change this to enforcing at boot if you wish via an app like Kernel Adiutor-Mod
    • About voltage control: Setting frequencies that are unstable are going to cause lockups,freezes and reboots. This is NOT a fault in the kernel. My suggestion is to move the voltages up or down slowly (+/- 25) until you find some stable voltages that you're happy with.
    • Enough people were having problems with the 1.6ghz overclocked version that I've decided to release a non overclocked (1.5ghz) build as well. I would recommend trying the 1.6ghz and only if you experience a bootloop or instability then use the 1.5ghz version. I will not keep older versions of the 1.5ghz build up. Only the latest.
    • Having troubles deciding on a CPU governor or an I/O scheduler? Here is an amazing guide. All credits to Saber. Be sure to hit the thanks button. He obviously put a lot of time into that.
    Features
    • Based on the latest Samsung kernel sources
    • Built an updated Sqlite3 (from version 3.9.2 -> 3.19.3 that will be pushed along with the kernel install (you can verify this by running "sqlite3 --version" in a terminal emulator before the new kernel install and then again after)
    • Compiled with self-built (ct-ng) UBERTC 8.0
    • Patched Linux to latest 3.4.113
    • Unlocked CPU frequencies: 200MHZ and 300MHZ
    • GPU overclocked to 600MHZ
    • CPU Overclocked to 1.6GHZ
    • CPU voltage control ( Max voltage =1500mV. Min voltage =600mV)
    • DriveDroid support (add sysfs entry for cdrom to LUNs)
    • Implemented zen-tune v4.5
    • Added CPU boost driver
    • Added PIE net scheduler
    • Added support for USB keyboards (You need This app)
    • Reduced vm_swappiness from 60 to 20
    • Added I/O scheduler switcher by sultanxda (changes the I/O scheduler for a specified request queue to Noop when the screen turns off in order to improve power consumption while the screen is off)
    • Added Fsync on/off
    • Added dynamic fsync
    • Added Dynamic management of dirty page writebacks (allows to have two different intervals for dirty page writebacks and to dynamically manage them when the system has been resumed (it's active) or when has been suspended - Not adjustable via Grarak's Kernel Adiutor app)
    • Proc: much faster /proc/vmstat
    • Full CIFS support ( Modules will be pushed with kernel install )
    • Introduced new flag WQ_POWER_EFFICIENT for power oriented workqueues ( Allows for power saving if selected in Kernel Adiutor ETC. )
    • Added /dev/frandom support ( It is yet to be implemented properly yet however )
    • Properly enabled faux123's powersuspend v2.5
    • Fading LED's
    • Enabled graphite
    • Enabled AIO
    • Readahead set to 512 (from 128 default)
    • Reverted "Enabled arch power" (There will be a switch to enable/disable this in the next build)
    • Many build flags for optimization
    • Added optimization flags for the GPU
    • Many more features being worked on and coming soon

    Added CPU governors
    - nightmare
    - wheatley
    - zzmoove
    - dancedance
    - darkness
    - hyper
    - lionheart
    - ondemandplus
    - bioshock
    - pegasusq
    - smartmax
    - alucard (by alucard24)
    - bluactive
    - intelliactive (by faux123)
    - intellidemand

    Added CPU hotplug governors
    - alucard hotplug (by alucard24)
    - intelliplug hotplug (by faux123)
    - thunderplug hotplug (by varun.chitre15)
    - MSM Sleeper hotplug
    - autoSMP hotplug

    Added IO schedulers
    - fiops
    - sio
    - zen
    - fifo
    - tripndroid
    - bfq-v7r8

    Added many TCP congestions
    - reno
    - vegas
    - westwood and more
    - Added the rest of the TCP congestions
    - Westwood is now default TCP


    Patches and tweaks applied include:

    - Updated ARM topology and added cpu_power driver
    - Input: Improve the events-per-packet estimate
    - block/partitions: optimize memory allocation in check_partition()
    - block: bfq-iosched: tuning for SSD (thanks to anarkia1976)
    - cpufreq: Move get_cpu_idle_time() to cpufreq.c (This is important for CPU governors to work better/more efficiently with our kernel version-3.4)
    - Fixed all the CPU governors to work properly with the Move get_cpu_idle_time
    - cpufreq: Introduce new relation for freq selection (It selects the frequency with the minimum euclidean distance to target. In case of equal distance between 2 frequencies, it will select the greater frequency)
    - cpufreq: conservative: Set MIN_LATENCY_MULTIPLIER to 20
    - cpufreq-ondemand-Set-MIN_LATENCY_MULTIPLIER-to-20
    - cpuidle-Get-typical-recent-sleep-interval
    - cpufreq: Persist cpufreq time in state data across hotplug
    - implement-LoUIS-API-for-cache-maintenance-operations
    - ARM-kernel-update-cpu_disable-to-use-cache-LoUIS-maintenance API
    - update-v7_setup-to-the-new-LoUIS-cache-main
    - USB-gadget Optimize-tx-path-for-better-performance
    - af_unix: speedup /proc/net/unix
    - net/socket.c: fix: warning: 'sock/sock1/sock2' may be used uninitialized in this function
    - fs/proc/array.c: make safe access to group_leader
    - lib/memcopy: use glibc version (the kernel's memcpy and memmove is very inefficient. But the glibc
    version is quite fast, in some cases it is 10 times faster than the kernel version)
    - lib/string: use glibc version (same as above)
    - lib/int_sqrt.c: optimize square root algorithm
    - readahead: make context readahead more conservative
    - sched-Fix-select_idle_sibling-bouncing-cow-syndrome
    - sched-Implement-smarter-wake-affine-logic
    - sched-Micro-optimize-the-smart-wake-affine-logic
    - sched: Reduce overestimating rq->avg_idle
    - power: make sync on suspend optional
    - tcp: tweaked for speed
    - writeback-fix-occasional-slow-sync
    - writeback-fix-writeback-cache-thrashing
    - wireless - bcmdhd - reduce scan dwell time to reduce power usage
    - bcmdhd reduce wakelocks
    - mutex-Queue-mutex-spinners-with-MCS-lock-to-reduce-cc
    - mutex-Make-more-scalable-by-doing-less-atomic-operations
    - ARM-use-generic-unaligned.h
    - Kconfig-enabled-unaligned-capability-for-ARM
    - decompressor-Enabled-unaligned-memory-access
    - Optimized-ARM-RWSEM-algorithm
    - ARM: Fixed negative idle stats for offline cpu
    - disabled debugfs[/COLOR]
    - mm: remove noisy remainder of the scan_unevictable interface
    CONFIG_HZ=100 (reverted commit)
    - Plus many more - Check my git repo for full details.

    Sources


    Known Issues
    • Setting alucard hotplug along with certain other governors at boot via kernel adiutor etc can cause a reboot after setting is applied. So be certain to set the "delay" time in kernel adiutor or similar to 10 seconds or more,so if you have this you are able to cancel and change after a reboot.
    • There is a chance of some settings being reset after flashing the kernel (quick setting,sound,statusbar etc.) This is rather insignificant and all settings that have been changed can be set back in minutes.

    Installation
    I HIGHLY recommend that you do a full backup before flashing this kernel. I am not responsible if you lose any or all of your data.

    1.Download "Spookcity_Kernel-N"
    2.Place the zip onto your phones storage
    3.Reboot into recovery (Volume-Up + Home + Power button)
    4.Select install
    5.Flash the downloaded kernel
    6.Go back a few times in TWRP Select wipe -> Advanced wipe and wipe Dalvik/Art cache and the cache partition.
    If you do not do this you are very likely to experience strange issues.You have been warned.Do not report problems if you did not do this.
    7.Reboot


    Code:
    Feedback can also be posted[URL="https://github.com/Spookcity/ROMS-G800F/issues/12"]-------> Here[/URL]
    Test builds will be released [URL="https://github.com/Spookcity/ROMS-G800F/issues/22"]-------> Here[/URL]

    Download the latest build

    Download older version
    Code:
    [URL="https://www.androidfilehost.com/?fid=745425885120759188"]Version 5.0[/URL]
    [URL="https://www.androidfilehost.com/?fid=889764386195920916"]Version 4.0[/URL]
    [URL="https://www.androidfilehost.com/?fid=673368273298972709"]Version 3.0[/URL]
    [URL="https://www.androidfilehost.com/?fid=889764386195913162"]Version 2.0[/URL]
    [URL="https://www.androidfilehost.com/?fid=889764386195911617"]Version 1.0[/URL]
    Huge credit and many thanks to:
    Hennymcc,Ayke,Psyafter,mirhciulica,ctxZ,DjSteve,CurtisMJ,osm0sis,Archidroid,Chet Kener,andip71,faux123,flar2,ZaneZam,anarkia1976,AndreiLux,Yank,Francisco Franco,Sultanxda,varun.chitre15

    Big thanks for testing and giving feedback:
    Oleggluk,StanleyNL,Mikahlo,Guntzog
    and any others as I'm sure I am forgetting people.

    CHANGELOG
    HTML:
    01-09-2017 - Released Version 6.0
    
    - Added MSM Sleeper hotplug
    - Reduced vm_swappiness from 60 to 20
    - Added intellidemand governor
    - Added autoSMP hotplug
    - Added CPU boost driver
    - Proc: much faster /proc/vmstat
    - Cpufreq: Persist cpufreq time in state data across hotplug
    - Reverted "enable arch power"
    - mm: remove noisy remainder of the scan_unevictable interface
    - net/socket.c: fix: warning: 'sock/sock1/sock2' may be used uninitialized in this function
    
    01-09-2017 - Released Version 5.0
    
    - Removed ROW I/O scheduler
    - Added I/O scheduler switcher by sultanxda
    - Added PIE net scheduler
    - Added support for USB keyboards
    - Properly enabled faux123's powersuspend v2.5
    - Added dynamic fsync
    - Added optimization flags for the GPU
    - Enabled AIO
    - Reverted a couple of HZ related commits
    - Added intelliactive governor
    - Added intelliplug hotplug driver 
    - Added thunderplug hotplug driver
    - Added Dynamic management of dirty page writebacks
    - Fixed voltage control on 1500MHZ version
    - Fixed alucard governor
    - Fixed ondemandplus governor
    - Fixed bluactive governor
    - ib/int_sqrt.c: optimize square root algorithm
    - af_unix: speedup /proc/net/unix
    - wireless - bcmdhd - reduce scan dwell time to reduce power usage
    - bcmdhd reduce wakelocks
    - readahead: make context readahead more conservative
    - block/partitions: optimize memory allocation in check_partition()
    - power: make sync on suspend optional
    - block: bfq-iosched: tuning for SSD
    
    05-08-2017 - Released Version 4.0
    
    - Added 1.5GHZ version
    - Added voltage control
    - DriveDroid support
    - Implemented zen-tune v4.5
    - Full CIFS support
    - Introduce new flag WQ_POWER_EFFICIENT for power oriented workqueues
    - Added Fsync on/off
    - Added ROW I/O sheduler
    - Added BFQ-v7r8 I/O scheduler for 3.4 kernel
    - Added Blu_active CPU governor
    - block: disabled add_random
    - tweaked build flags
    - many workqueue related patches
    - tcp: tweaked for speed
    - CONFIG_HZ=300
    - fs/proc/array.c: make safe access to group_leader
    - disabled debugfs
    
     19-07-2017 - Released Version 3.0
    
    -GPU overclocked to 600MHZ
    -Updated Sqlite3 to version  3.19.3 from 06-08-2017
    Added CPU governors
    -bioshock
    -pegasusq
    -smartmax
    -alucard
    -alucard hotplug
    -Added the rest of the TCP congestions
    -cpufreq: Move get_cpu_idle_time() to cpufreq.c
    -Fixed all the CPU governors to work properly with the Move get_cpu_idle_time
    -Added /dev/frandom support 
    -cpufreq: Introduce new relation for freq selection
    -lib/memcopy: use glibc version
    -lib/string: use glibc version
    -
     03-07-2017 - Released Version 2.0
    
    -GPU overclocked to 533MHZ
    Added CPU governors
    -dancedance
    -darkness
    -hyper
    -lionheart
    -ondemandplus
    Added IO schedulers
    -fifo
    -tripndroid
    Added many TCP congestions
    -reno
    -vegas
    -westwood
    -etc.
    
     26-06-2017 - Fix "unsupported device" when flashing in TWRP 3.1.1.0
    
     23-06-2017 - Initial release

    Enjoy!


    XDA:DevDB Information
    [KERNEL] [G800F/M/Y] Spookcity_Kernel-N (For all 7.x custom ROMS), Kernel for the Samsung Galaxy S5 Mini

    Contributors
    spookcity138
    Kernel Special Features:

    Version Information
    Status: Beta

    Created 2017-06-23
    Last Updated 2017-10-19
    9
    Updated to v4.0. See main post for the details.

    Enjoy!
    8
    Updated to v6.0. See main post for details
    Note: I have not had the time to look into and fix the issue that a few have with this kernel. My apologies. I will try my best to look into it soon. I just haven't had much time to work on this kernel recently. All of these commits are from 6 or so week ago so yeah.

    Enjoy!
    8
    Updated to v5.0. See main post for details.

    Enjoy!
    7
    New test build up. Hopefully some of these random reboot issues are fixed,fingers crossed. Download Here
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