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

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elhennig

Senior Member
Feb 21, 2011
957
231
Glad to hear all is working well. Westwood will be the default TCP congestion from the next build on. It was suppose to be on this build, but I forgot.

Edit:
Oleggluk has pointed out to me that alucard and ondemandplus do not work as they should. You can use them and they cause no issues, but they don't scale the CPU frequencies like they should. I recommend not using these until hopefully I can fix them. Alucard hotplug works properly though.

OK, I was just cautious now and tried to minimize the changes I did to the default config. Anyway with this I will try to activate alucard hotplug and see what happens :)
 

spookcity138

Senior Member
Nov 9, 2015
1,864
2,574
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@spookcity138 I'm on your Kernel 4.0 1500mhz and I experience random reboots (about one per day). I think this has to do with voltage control as it only happens when my screen is off? Any ideas? ;)

Hmm,interesting. Well,that's certainly no good. What CPU governor are you using? I really cant think of any specific reason why this would be happening. My only guess would be perhaps the CPU governor and/or the voltages you've selected for the lower CPU frequencies because when the screen is off the CPU should scale down.
 
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Cisencjusz

Member
May 17, 2016
42
8
hey, can you add suport for usb tethering in this kernel? it's working fine on stock kernel in every rom, but if i install this one (4.0) i have a lot of weird ip configuration errors, i tried to fix it for like 6h, but i couldn't do it, flashing again rom (stock kernel) was the only solution
 

Knoose

Senior Member
Oct 19, 2016
81
34
Deventer
@spookcity138 I'm on your Kernel 4.0 1500mhz and I experience random reboots (about one per day). I think this has to do with voltage control as it only happens when my screen is off? Any ideas? ;)

I am experiencing the same, but more than once a day. Battery drain also seems to be higher. This started with version 4, while using the same governor, zzmoove ybat. I do not know much about voltages but will play with them a bit, see if it will help :)
 

spookcity138

Senior Member
Nov 9, 2015
1,864
2,574
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hey, can you add suport for usb tethering in this kernel? it's working fine on stock kernel in every rom, but if i install this one (4.0) i have a lot of weird ip configuration errors, i tried to fix it for like 6h, but i couldn't do it, flashing again rom (stock kernel) was the only solution
Hmm, I will look into this,but it may be difficult for me to track down. If USB tethering is available in the stock kernels then I don't really know. I certainly did not remove this feature. I will see what I can do though.

I am experiencing the same, but more than once a day. Battery drain also seems to be higher. This started with version 4, while using the same governor, zzmoove ybat. I do not know much about voltages but will play with them a bit, see if it will help :)
Are you using the 1.5 kernel or the overclocked one? I didn't tweak zzmoove,so it must be something else. Right now I'm just curious what version of the kernel you're using. Setting unstable voltages can certainly give these results. Have you messed with these already or no?
 
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Knoose

Senior Member
Oct 19, 2016
81
34
Deventer
Are you using the 1.5 kernel or the overclocked one? I didn't tweak zzmoove,so it must be something else. Right now I'm just curious what version of the kernel you're using. Setting unstable voltages can certainly give these results. Have you messed with these already or no?

I am using the 1.6 kernel, but it worked well for me on previous versions. I have not yet tweaked any voltages, i have just disabled the 200 mhz and 1600 mhz in kernel adiutor. Maybe this helps
 

spookcity138

Senior Member
Nov 9, 2015
1,864
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I am using the 1.6 kernel, but it worked well for me on previous versions. I have not yet tweaked any voltages, i have just disabled the 200 mhz and 1600 mhz in kernel adiutor. Maybe this helps
Yeap,def helps. Let's me know that you've done nothing that should cause this. Before I start spending time looking into this, I plan to release a test build on my github hopefully this weekend. While I've done nothing that would specifically fix this issue. Perhaps by chance something new/different in this build may solve it hopefully. If not we will try to hunt down the cause. I'll post on here when I've released the next test build.

Sent from my SM-G800F using Tapatalk
 

Knoose

Senior Member
Oct 19, 2016
81
34
Deventer
Yeap,def helps. Let's me know that you've done nothing that should cause this. Before I start spending time looking into this, I plan to release a test build on my github hopefully this weekend. While I've done nothing that would specifically fix this issue. Perhaps by chance something new/different in this build may solve it hopefully. If not we will try to hunt down the cause. I'll post on here when I've released the next test build.

Sent from my SM-G800F using Tapatalk

No rush :) I can work around this and it is a minor issue to me. You always provide us with good quality roms and kernels, I won't complain if something does not work for me once in a while. If you give me a heads up on your test build I will flash and see if it helps.
 
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Friedensfurz

Senior Member
Hmm,interesting. Well,that's certainly no good. What CPU governor are you using? I really cant think of any specific reason why this would be happening. My only guess would be perhaps the CPU governor and/or the voltages you've selected for the lower CPU frequencies because when the screen is off the CPU should scale down.
I didn't mess with Kernel Adiutor at all, I just used it to take a look at the used frequencies. Are the standart options not stable yet? @Knoose also seems to have this problem. Anyway - thank you very much for your efforts in this kernel and all the other content you provide to our S5 Mini. There is no hurry on my side at all so take your time ;)
 
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spookcity138

Senior Member
Nov 9, 2015
1,864
2,574
Eindhoven
I didn't mess with Kernel Adiutor at all, I just used it to take a look at the used frequencies. Are the standart options not stable yet? @Knoose also seems to have this problem. Anyway - thank you very much for your efforts in this kernel and all the other content you provide to our S5 Mini. There is no hurry on my side at all so take your time ;)
The standard options should indeed be stable. It's as strange thing as I have had no issues at all. I know a few others who have not as well,but obviously some do. You are not alone in this. I really don't know why. I have some logs provided to me that I am going to have a look at when I have sometime. Hopefully this will give me some insight.

I reverted back to v3 and reset adiutor, all seems fine now. V4 still gives me problems.
Weird,as above it seems that some have issues and others do not which makes it more difficult to figure out. Again,maybe the log will show me something interesting.
 

spookcity138

Senior Member
Nov 9, 2015
1,864
2,574
Eindhoven
Okay, I tested your Kernel 4.0a 1500mhz version but sadly it restarts my phone when I lock it and it also lights up my cpu, all 4 cores at 1500mhz and a temperature of 65°C :( So I switched back to stock RR kernel. Let me know it you need logs etc @spookcity138 ;)

Thanks for the feedback. I can't explain why you're having these issues though. I know Oleggluk is also running RR and has reported no such issues to me. There should be no reason for these things to happen that I can think. Did you wipe dalvik/art cache and the cache partition after flashing? Do you have kernel adiutor or similar set to apply settings on boot? If so try to disable all of that before flashing the test build. I will gladly look over your logs if you are able to grab them. I'm not sure it will help me much,but perhaps.
 

Friedensfurz

Senior Member
Thanks for the feedback. I can't explain why you're having these issues though. I know Oleggluk is also running RR and has reported no such issues to me. There should be no reason for these things to happen that I can think. Did you wipe dalvik/art cache and the cache partition after flashing? Do you have kernel adiutor or similar set to apply settings on boot? If so try to disable all of that before flashing the test build. I will gladly look over your logs if you are able to grab them. I'm not sure it will help me much,but perhaps.
Thanks for the answer, I wiped system, dalvik and cache, flashed RR, Magisk 13.3 and finally your kernel build. Maybe it helps if I uninstall Kernel Adiutor, but I can't try because I'm on the move at the moment ;)
 

Knoose

Senior Member
Oct 19, 2016
81
34
Deventer
Tried the 4a oc kernel for one day now, all seems fine except that it hangs when i turn off the phone. I need to manually remove the battery to turn it off. But hey, no more reboots! :victory:
 

spookcity138

Senior Member
Nov 9, 2015
1,864
2,574
Eindhoven
Thanks for the answer, I wiped system, dalvik and cache, flashed RR, Magisk 13.3 and finally your kernel build. Maybe it helps if I uninstall Kernel Adiutor, but I can't try because I'm on the move at the moment ;)

You shouldn't need to uninstall kernel adiutor. I have come to realize that what is stable to some is not for others. I know part of this is due to how the user uses their phone (apps etc) but there is something else to it that I'm currently unsure of. It's all very strange to me. I see no reason why you should be having these issues.

Tried the 4a oc kernel for one day now, all seems fine except that it hangs when i turn off the phone. I need to manually remove the battery to turn it off. But hey, no more reboots! :victory:
Again,as above another strange issue that I can't reproduce. Interestingly,I do now have random reboots. Just to show how very strange things are. I was assuming that you would as well (and others) but apparently not..or not as often as me. I've had a few a day. I think this may be due to a HZ issue that I implemented,but again not everyone has this issue. It's like the whole 1.7 overclock issue that was on my GitHub a month or so ago..It's all just very confusing. I will continue to investigate.
 
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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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