Hi, On Tue, Oct 12, 2010 at 10:44 AM, Daniele Nicolodi <dani...@grinta.net> wrote: > Hello, I just installed xenomai 2.5.5 on a 2.6.35.7 kernel and I'm > noticing serious regressions on analogy basic features: > > 1. Buffer management is badly broken. It is not possible to run any > acquisition command that wraps around in the ring buffer. That can be > simply reproduced with: > > cmd_read -v d analogy0 -s 0 -S 0 > > after a while it will fail with: "cmd_read: a4l_read failed (ret=-32)". > In dmesg the driver reports: "Analogy: MITE: DME overwrite of free area".
OK. Maybe, it is not Analogy's buffer management; it may be specific to the NI driver. Did you try to reproduce the bug with another driver (analogy_fake for example)? It may be due to some fix I made this summer (which is surprising, I thought I tested the change quite exhaustively... Sorry for that). > > 2. Buffer is kept memory mapped after the mapping process dies. If a > process mapping a device buffer dies before un-mapping the buffer, it is > not possible to reconfigure the bnuffer. a4l_set_bufsize fails with > error code 32 and dmesg read "Analogy: a4l_ioctl_bufcfg: please unmap > before configuring buffer". Sinche the mapping process died I do not > know how to do this. > With a 2.4.x release, did you manage to reproduce the bug? > When I proposed some easy changes to the analogy API, to make it much > less confusing with trivial changes, Alexis expressed concerns about API > stability. What about functional stability? I think the reported ones > are major problems easily catch with simple pre-release tests... > > Cheers, > Daniele > > _______________________________________________ > Xenomai-core mailing list > Xenomai-core@gna.org > https://mail.gna.org/listinfo/xenomai-core > Alexis. _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
