----- Alexander Graf
On 11.10.2012, at 17:45, Guillaume Gardet wrote:
Hi,
Does anybody thought about kernel preemption for ARM boards? It could be usefull since kernel preemption is intended to embedded system or (Low-latency) Desktop.
Moreover, If we want to enable openGL on omap4 (pandaboard), we need a preemptible kernel.
Why?
It is a build requirement, otherwise, we get: [ 664s] /home/abuild/rpmbuild/BUILD/pvr-omap4-kernel-1330667111/sgx/eurasiacon/binary2_omap4430_linux_release/target/kbuild/services4/srvkm/env/linux/osfunc.c:85:2: error: #error "A preemptible Linux kernel is required when using workqueues"
Is there any objection to move to a preemptible kernel for omap2plus? For other ARM boards? For Factory and/or 12.2?
It usually incurs overhead for not too much perceivable gain. Have you run into latency issues?
No, but it may be useful for people using sound or things like that which need low latency. Guillaume
Alex
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