From OpenSCADAWiki
Assembling and testing process:
- Assembling of the kernel from sources of "ICP DAS" (2.6.33.7) and configuration it inherited from kernel 2.6.29 (the source code has suspiciously more of *.rej files, and also "staging/comedi" impossible to build) — it started and mostly works; modules "ipic" and "slot" loaded; module "8250_linpac" crashes in the function "platform_device_add"; series of programs hangs in the FS operations, with the message: "task openscada:2153 blocked for more than 120 seconds".
- AUFS replacing to the version from 2.6.29-rt1 — crashes in rtmutex on starting; replacing to official version from git looks same result, at the begin used patch "aufs+sqfs4lzma-2.6.33.patch" from DLink.
- Assembling the original kernel with patches CONFIG_PREEMPT and AUFS — a problem again in AUFS, but now it at the finish can not look "/sbin/mingetty".
- Assembling the original kernel 2.6.33.9 with patches CONFIG_PREEMPT and AUFS — same problems.
- Assembling from sources of "ICP DAS" (2.6.33.7) for SMP — the module DAQ.JavaLikeCalc of OpenSCADA crashes at an unknown reason.
- Assembling the original kernel with patches CONFIG_PREEMPT and AUFS for SMP — same problem as without SMP but it is not immediately and about five thread.