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[KERNEL] Bricked-Kernel Hammerhead - Sweep2wake | KnockKnock/Dt2w [13.12.2013]

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[KERNEL] Bricked-Kernel Hammerhead - Sweep2wake | KnockKnock/Dt2w [13.12.2013]

Message par Primokorn le Mer 13 Nov 2013 - 10:44

Bricked Kernel

TOUTE COPIE PARTIELLE OU TOTALE EST INTERDITE

Description


* Based upon Google's msm 3.4 source
* Various fixes, improvements and optimizatios (look @ github)
* Compiled with gcc4.7.2 toolchain (linaro 09.12)
* -O3 optimized
* Snapdragon & CortexA15 optimizations
* replaced qcom's hotplug binary with msm_mpdecision (IN-KERNEL, better battery life + performance)
* Extensive sysfs interface for mpdecision with all the tuneables you want (/sys/kernel/msm_mpdecision/)
* replaced qcom's thermal binary with my IN-KERNEL solution. (/sys/kernel/msm_thermal/)
* export krait version to: /sys/kernel/debug/krait_variant
* Allow OC up to 2,5Ghz
* Allow UC to 96Mhz
* Undervolting (faux123)

* Default clocks: 300 Mhz min & 2265,6 Mhz max

Zip features:
*** ON-THE-FLY-RAMDISK EDITS!
*** THIS KERNEL USES YOUR RAMDISK, it will just modify it on the fly while flashing. These changes are not creating any incompatibilities with roms/other kernels.
* removes min freq overrides from the ramdisk
* removes governor overrides from the ramdisk
* adds init.d support to your ramdisk (if not already supported)
* modifies stock ondemand settings
* add module insertion
Plus aucun changelog disponible

Téléchargement

*stables* ]STABLE] CLIQUEZ MOI
*betas* ]Peut être instable / pour test uniquement] CLIQUEZ MOI

Instructions d'installation



  1. Copiez le fichier .Zip sur votre téléphone
  2. Redémarrez dans votre recovery custom
  3. Flashez le kernel (pas besoin de wipe)
  4. Redémarrez normalement

NOTE IMPORTANTE :
Flashez ce fichier Stock Nexus5 boot.img si vous venez d'un autre kernel qui a son propre ramdisk, si le zip contient un fichier *.img

Envie d'enlever ce kernel ? Flashez ceci : http://bricked.de/downloads/kernel/h...hammerhead.zip

Pour gérer le kernel, utilisez l'application KControl


Scannez ou cliquez le QRCode pour télécharger l'appli


Source


Dernière édition par Primokorn le Ven 13 Déc 2013 - 16:49, édité 5 fois
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Re: [KERNEL] Bricked-Kernel Hammerhead - Sweep2wake | KnockKnock/Dt2w [13.12.2013]

Message par Primokorn le Mer 13 Nov 2013 - 10:45

Partie technique


Spoiler:
What is msm_thermal?

Kernel based 3-phase thermal control!
This replaces your /system/bin/thermald binary which is renamed by the installer to thermald_bck.
It will throttle your cpu speed to keep it cool and unleash it if the cpu has cooled down enough. (3 phases: low, mid and high)

Check /sys/kernel/msm_thermal/conf/ for the thermal configuration

allowed_max_high = highest threshold (phase 3)
allowed_max_low = remove the throttling if we cooled down to this (clr_thrshold)
allowed_max_freq = max frequency if throttled (limit)

[...]mid[...] = same as above, just for phase 2
[...]low[...] = Lowest threshold (phase 1)

check_interval_ms = how often shall we check? (sampling rate)

shutdown_temp = if we reach this shut down the device!

If you want to see msm_thermal doing it's job:
Code:
adb shell
cat /proc/kmsg | grep 'thermal'
What is msm_mpdecision?

100% kernel based multi core decision! (should cpu1/2/3 be online or not?)
This replaces your /system/bin/mpdecision binary which is renamed by the installer to mpdecision_bck.

Check /sys/kernel/msm_mpdecision/conf/ for the configuration.

startdelay = time until mpdecision starts doing it's magic (20000)
delay = time between checks (70)
pause = if something else plugs in the cpu, fall asleep for 10000ms (10 secs)
scroff_single_core = if the screen is off, don't plug in cpu1/2/3. Additionally: Unplug all cpus except cpu0 when screen is turned off (1)
enabled = enable(1) or disable(0) mpdecision. This does not affect scroff_single_core!
min_cpus = min cpus to be online, cannot be < 1. Default: 1
max_cpus = max cpus to be online, cannot be > 4. (if you set it to 2 and min_cpus to 1 you will basically have a dualcore) Default: 4
idle_freq = a value against that will be checked if a core +/- is requested. (486000)
If cpu0 is below that value and a core up of another cpu is requested, nothing will happen.
If any other cpu is above that value and a core down of that cpu is requested, nothing will happen. (otherwise it would now put down that cpu even though it is still working, which isn't what we want)


Hot plug thresholds (aka now it gets 'complicated')
This small formula calculates which value will be used: (number_of_cpus_online - 1) * 2
The result of this formula will be the nwns_threshold where a new cpu is hotplugged.
The result of this formula + 1 will be the nwns_threshold where a cpu is unplugged.

nwns_threshold_x = runqueue threshold, if this is reached cpuX will be hot/unplugged
twts_threshold_x = time threshold, this amount of time must have passed for the related action to be taken (hot/unplug)

Example:
One cpu is online.
(1 - 1) * 2 = 0 ergo:
nwns_threshold_0 = cpu1 will be hotplugged at this value
((1 - 1) * 2) + 1 = 1
nwns_threshold_1 = cpu0 will be unplugged at this value
Since we can't unplug cpu0 this is '0'.

Two cpus are online.
(2 - 1) * 2 = 2 ergo:
nwns_threshold_2 = cpu2 will be hotplugged at this value
((2 - 1) * 2) + 1 = 3
nwns_threshold_3 = cpu1 will be unplugged at this value

etc...

The default values are:
NwNs_Threshold: 12, 0, 25, 20, 32, 28, 0, 35
TwTs_Threshold: 140, 0, 140, 190, 140, 190, 0, 190
Where the position and function of the number equals the result of the above explained formula.

(all times are in ms)
If you want to see the mpdecision magic happening:
Code:
adb shell
cat /proc/kmsg | grep 'MPDEC'
mpdecision's input event boost, aka project butter

This will boost your min cpu speed if you touch the screen or press a button and gives you full control.
In those events the min cpu freq will be risen to a predefined value (look below) on every online cpu. This boosts overall reaction times and smoothness a lot. (works similar to the qcom mpdecision binary)
Configuration files:
root@android:/sys/kernel/msm_mpdecision/conf # ls | grep boost
boost_enabled
boost_freqs
boost_time

All of them work like the usual sysfs files, except one special case:
boost_freqs will list all frequencies from cpu 0 to cpu x. Cpu 3 and any following cpu will share one frequency.
To change those frequencies echo the cpu number + the frequency in khz.
Example: To change the boost freq of cpu3 (and 4,5,6,7,8, etc) the echo would look as follows:
Code:
echo "3 960000" > /sys/kernel/msm_mpdecision/conf/boost_freqs
for cpu0:
Code:
echo "0 960000" > /sys/kernel/msm_mpdecision/conf/boost_freqs
Defaults:
Code:
cat /sys/kernel/msm_mpdecision/conf/boost_freqs
960000
960000
729600
576000
Why do I have no WLAN?

Due to this kernels very high optimization settings it is too big for our boot.img with WLAN included into the kernel, so it is built as a module. That means it needs to be inserted into the kernel upon boot up, which needs to be automated for maximum comfort.

The zip adds module insertion to your ramdisk, if that fails for some reason the wlan module cannot be inserted.

if
Code:
adb shell lsmod
doesn't show this:
Code:
tun 14701 0 - Live 0x00000000
cifs 275399 0 - Live 0x00000000
bcmdhd 2964650 0 - Live 0x00000000 (C)
Then something went horribly wrong.
Chances are that I broke it and this should never happen.
One post in the issue tracker will probably fix it with the next release

You can restore wlan for your current bootup by executing:
Code:
adb shell
su
insmod /system/lib/modules/bcmdhd.ko


Dernière édition par Primokorn le Mer 13 Nov 2013 - 10:46, édité 1 fois
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Re: [KERNEL] Bricked-Kernel Hammerhead - Sweep2wake | KnockKnock/Dt2w [13.12.2013]

Message par Primokorn le Mer 13 Nov 2013 - 10:45

Quelques résultats Benchmark


Vellamo Metal:
http://vellamo2.quicinc.com/api/v2/a...E-6BCA76DF491D
(usually ranges from 11xx-12xx. Depending on system background load, thermal status, air pressure, weather, world hunger, etc...)

Antutu:
https://plus.google.com/u/0/10826296...ts/VJbxpMoFJPN
(usually ranges from 28.xxx - 30.xxx. Depending on system background load, thermal status, air pressure, weather, world hunger, etc...)

3DMark Icestorm unlimited: (the others are maxed out)
https://plus.google.com/u/0/10826296...ts/N24t9ssoBcL
(17xxx)   
Welcome to the most customizable N5 kernel on xda
Bricked-Kernel Nexus 5 (hammerhead)
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Re: [KERNEL] Bricked-Kernel Hammerhead - Sweep2wake | KnockKnock/Dt2w [13.12.2013]

Message par Primokorn le Dim 17 Nov 2013 - 20:01

Mise à jour. Changelog
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Re: [KERNEL] Bricked-Kernel Hammerhead - Sweep2wake | KnockKnock/Dt2w [13.12.2013]

Message par Primokorn le Mar 19 Nov 2013 - 16:49

Mise à jour dont ajout Sweep2wake
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