On Tue, 2011-06-14 at 14:47 +0200, [email protected] wrote: > Perhaps this may help: > I instrumented src/common/sem_heap.c and ksrc/nucleus/heap.c with printf > and printk (see appended files) and this is the output: > > 1:mrconfig:~ # latency > 2:xeno_init_private_heap > 3:map_sem_heap syscall 0 > 4:xeno_map_heap open 3 > 5:xnheap_ioctl private data: 00000000 > 6:xeno_map_heap ioctl 0 handle 0xc7dd9210 > 7:xnheap_mmap 00000000 00000000 > 8:xeno_map_heap 0xffffffff > 9:Xenomai: mmap local sem heap: No such device or address > 10:mrconfig:~ # > > > It looks like (if I figured it out correctly) as if in function > sem_heap.c->xeno_map_heap() (which is called from xeno_init_privat_heap() > via function map_sem_heap()) the ioctl-Call fails. > xeno_map_heap() passes correctly an argument unequal NULL as third parameter > to ioctl() (line6), but in kernel space function xnheap_ioctl() the 3. > parameter arrives as NULL(line 5). This sets file->private_data to NULL which > in turn lets xnheap_mmap() fail, as this function expects file->private_data > != NULL (line7). > Therefore xnheap_mmap() returns -ENIXIO to xeno_map_heap() which outputs the > error message " Xenomai: mmap local sem heap: No such device or address". > The one million dollar question is, why the 3. parameter of ioctl() mutates > to NULL. Any idea? > > If I can do anything else, let me know. >
You will need these patches to run linux 2.4.25 over 2.5.6. The first one fixes the ioctl() issue. http://git.xenomai.org/?p=xenomai-rpm.git;a=commit;h=c2a24b90667e12d0614e5d8442dba74f137f9d4d http://git.xenomai.org/?p=xenomai-rpm.git;a=commit;h=bebc2a8e6b430c99041800330dc6061665371d90 Note: the switch test does not seem to be running correctly on my icecube (albeit the latency one does), somehow linux reschedule events get lost. For this reason, I would not consider the current state as being production-grade. > Roderik > > > > -----Ursprüngliche Nachricht----- > > Von: Philippe Gerum [mailto:[email protected]] > > Gesendet: Dienstag, 14. Juni 2011 11:40 > > An: Wildenburg, Roderik RAEK1 MRA > > Cc: [email protected] > > Betreff: Re: [Xenomai-help] Xenomai 2.5.6 with PPC-Kernel 2.4.25 > > > > On Tue, 2011-06-14 at 10:52 +0200, [email protected] > > wrote: > > > Sorry for asking again, but my question form June 7. wasn´t answered and > > > I am > > not able to work it out by my own: > > > When I use a PPC-Kernel 2.4.25 with Xenomai 2.5.6 I get the message > > > "Xenomai: mmap local sem heap: No such device or address" when I start the > > latency test (and other programs). > > > > > > But the rtheap-Device exists (see below). Can anybody give me a short > > > hint in > > which direction to search. > > > Is Xenomai 2.5.6 intend to work with Kernel 2.4. ? > > > > > > > Yes. I don't have the bandwidth avail to have a look at this ATM. I'll > > try to this week. > > > > > Thank you in advance > > > Roderik > > > > > > ----------------------------------------- > > > mrconfig:/fat/sbin # ll /dev/rtheap > > > crw-rw-rw- 1 root root 10, 254 May 19 14:16 /dev/rtheap > > > > > > mrconfig:/fat/sbin # strace ./latency > > > execve("./latency", ["./latency"], [/* 37 vars */]) = 0 > > > uname({sys="Linux", node="mrconfig", ...}) = 0 > > > : > > > : > > > : > > > access("/dev/rtheap", F_OK) = 0 > > > rt_sigaction(SIGILL, {0xff23cb8, [ILL], SA_RESTART}, {SIG_DFL}, 8) = 0 > > > rt_sigaction(SIGILL, {SIG_DFL}, {0xff23cb8, [ILL], SA_RESTART}, 8) = 0 > > > open("/dev/rtheap", O_RDWR) = 3 > > > ioctl(3, 0, 0xc7dd9210) = 0 > > > mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_SHARED, 3, 0) = -1 > > ENXIO (No such device or address) > > > close(3) = 0 > > > dup(2) = 3 > > > fcntl64(3, F_GETFL) = 0x2 (flags O_RDWR) > > > fstat64(3, {st_mode=S_IFCHR|0600, st_rdev=makedev(4, 64), ...}) = 0 > > > ioctl(3, TCGETS, {B38400 opost isig icanon echo ...}) = 0 > > > mmap(NULL, 4096, PROT_READ|PROT_WRITE, > > MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x30016000 > > > _llseek(3, 0, 0x7fffeac8, SEEK_CUR) = -1 ESPIPE (Illegal seek) > > > write(3, "Xenomai: mmap local sem heap: No"..., 56Xenomai: mmap local sem > > heap: No such device or address > > > ) = 56 > > > close(3) = 0 > > > munmap(0x30016000, 4096) = 0 > > > exit(1) > > > > > > -------------------------------------------------------- > > > manroland AG > > > Vorsitzender des Aufsichtsrates: Hanno C. Fiedler > > > Vorstand: Gerd Finkbeiner (Vorsitzender), Dr. Ingo Koch, Dr. Markus Rall, > > > Paul > > Steidle > > > Sitz der Gesellschaft: Offenbach am Main, Registergericht: Amtsgericht > > Offenbach HRB-Nr. 42592 > > > USt-Ident-Nr. DE 250200933 > > > > > > > > > _______________________________________________ > > > Xenomai-help mailing list > > > [email protected] > > > https://mail.gna.org/listinfo/xenomai-help > > > > -- > > Philippe. > > > > > > -------------------------------------------------------- > manroland AG > Vorsitzender des Aufsichtsrates: Hanno C. Fiedler > Vorstand: Gerd Finkbeiner (Vorsitzender), Dr. Ingo Koch, Dr. Markus Rall, > Paul Steidle > Sitz der Gesellschaft: Offenbach am Main, Registergericht: Amtsgericht > Offenbach HRB-Nr. 42592 > USt-Ident-Nr. DE 250200933 -- Philippe. _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
