[Xenomai-core] Runtime error on PXA270 for branch 'for-ipipe-2.6.35-arm' in 'ipipe-gch.git'
Hello! I'm trying to get running the ipipe patch on a 2.6.35 kernel. I've seen that Gilles was working on that port lately so I gave it a try. The kernel is booting fine. However init does not continue and the NETDEV watchdog triggers: [ 23.043294] Freeing init memory: 124K [ 31.995507] [ cut here ] [ 32.009368] WARNING: at /home/mib/EBX04/ipipe-2.6/net/sched/sch_generic.c:258 dev_watchdog+0x17c/0x290() [ 32.037640] NETDEV WATCHDOG: eth0 (dm9000): transmit queue 0 timed out [ 32.057061] Modules linked in: [ 32.066209] [c002d7a8] (unwind_backtrace+0x0/0xec) from [c004137c] (warn_slowpath_common+0x4c/0x64) [ 32.094207] [c004137c] (warn_slowpath_common+0x4c/0x64) from [c0041414] (warn_slowpath_fmt+0x2c/0x3c) [ 32.122715] [c0041414] (warn_slowpath_fmt+0x2c/0x3c) from [c026af20] (dev_watchdog+0x17c/0x290) [ 32.149695] [c026af20] (dev_watchdog+0x17c/0x290) from [c004c490] (run_timer_softirq+0x184/0x258) [ 32.177192] [c004c490] (run_timer_softirq+0x184/0x258) from [c00469a4] (__do_softirq+0x88/0x124) [ 32.204409] [c00469a4] (__do_softirq+0x88/0x124) from [c0046a88] (irq_exit+0x48/0x5c) [ 32.228816] [c0046a88] (irq_exit+0x48/0x5c) from [c0027070] (asm_do_IRQ+0x70/0x8c) [ 32.252409] [c0027070] (asm_do_IRQ+0x70/0x8c) from [c0027aa4] (__irq_svc+0x44/0xd0) [ 32.276250] Exception stack(0xc0415f80 to 0xc0415fc8) [ 32.291291] 5f80: 0001 c0415fc8 6013 c0414000 c0022020 c002201c c0417b50 [ 32.315654] 5fa0: a001ffa8 69054117 a001ff74 c0415fc8 c002905c c0029068 [ 32.340003] 5fc0: 6013 [ 32.350403] [c0027aa4] (__irq_svc+0x44/0xd0) from [c0029068] (default_idle+0x2c/0x30) [ 32.374756] [c0029068] (default_idle+0x2c/0x30) from [c0029550] (cpu_idle+0x58/0xac) [ 32.398881] [c0029550] (cpu_idle+0x58/0xac) from [c0008b0c] (start_kernel+0x284/0x2e4) [ 32.423502] [c0008b0c] (start_kernel+0x284/0x2e4) from [a0008034] (0xa0008034) [ 32.446064] ---[ end trace a6d3f140188b1aa5 ]--- The same behavior happens even if I disable FCSE and IPIPE or either of it. I think this is pretty much what this tree contains. A vanilla 2.6.35.9 kernel is booting fine with colibri_pxa270_defconfig. As you see from the defconfig, the target is a PXA270 colibri board. For me the behavior is a bit strange because the kernel already fetched the IP address via DHCP and also mounted the NFS root file system Does somebody have an idea in which direction I should investigate? Of course I can provide more information if needed. We would like to use Xenomai on this ARM board with kernel 2.6.35. Best regards, Michael ___ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
[Xenomai-core] Whether can Xenomai bypass the cache?
Hello: As known, cache can accelerate the memory access, but unfortunately, it would decrease the predictability of real-time tasks' temporal behaviour. Many tasks of our application prefer predictability to the speed of execution. Intel's processors after P6 include MTRR and PAT, both the two units can be used to bypass the cache. I wonder whether Xenomai can bypass the cache, and whether Xenomai can manage the MTRR or PAT? If the answers are true, how to use the function? 3x arethe ___ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
