Difference between revisions of "Application:SBromwichKernel"
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| − | The sbromwich series of kernels are my kernels with all current webos-internals testing patches applied, plus my own. | + | The sbromwich series of kernels are my kernels with all current webos-internals testing patches applied, plus my own patches. |
| + | |||
| + | = Patches applied for 1.4.1-23 = | ||
* Debug settings removed from default kernel build | * Debug settings removed from default kernel build | ||
| Line 6: | Line 8: | ||
* Enable preempt kernel | * Enable preempt kernel | ||
| − | Known problems | + | = Known problems = |
* Pre can take some extra time to respond to certain activities, especially when waking up; lags of up to 2 seconds can be experienced on wakeup. The alternative is a reboot, which will take even longer. | * Pre can take some extra time to respond to certain activities, especially when waking up; lags of up to 2 seconds can be experienced on wakeup. The alternative is a reboot, which will take even longer. | ||
| + | |||
| + | = Improvements = | ||
| + | |||
| + | * User interactivity latency should be lower (time to respond to keypresses, etc). | ||
| + | * Fewer powerd wakeups allowing the system to sleep longer. | ||
| + | |||
| + | = Warnings = | ||
| + | |||
| + | * My patch makes the kernel boot at 800MHz. Run this kernel at your own risk. | ||
| + | * anticipatory io scheduler recommended | ||
Revision as of 16:35, 8 May 2010
The sbromwich series of kernels are my kernels with all current webos-internals testing patches applied, plus my own patches.
Patches applied for 1.4.1-23
- Debug settings removed from default kernel build
- Compile kernel with explicit cortex-a8 tuning flags for gcc
- Tweak prcm power manager to more explicitly wait for power set calls to return, remove debug cruft, and add Wait For Interrupt instruction if a prcm setting attempt fails
- Enable preempt kernel
Known problems
- Pre can take some extra time to respond to certain activities, especially when waking up; lags of up to 2 seconds can be experienced on wakeup. The alternative is a reboot, which will take even longer.
Improvements
- User interactivity latency should be lower (time to respond to keypresses, etc).
- Fewer powerd wakeups allowing the system to sleep longer.
Warnings
- My patch makes the kernel boot at 800MHz. Run this kernel at your own risk.
- anticipatory io scheduler recommended