Re: allowed_cpus issue in rt_task_init_schmod call

OK, my bug. If the allowed cpus is not just one I distribute among all the available ones and not just among those allowed.
I'll send you a fix to test. It will not take too much time.
Thanks, Paolo
________________________________________
From: Emmanuel Pacaud [[email protected]]
Sent: Tuesday, March 8, 2016 5:43 PM
To: Paolo Mantegazza
Cc: [email protected]
Subject: Re: [Rtai] allowed_cpus issue in rt_task_init_schmod call

Le mar. 8 mars 2016 à 16:48, Paolo Mantegazza
<[email protected]> a écrit :
> How did you check it? Using "cat /rtai/sched"?

No, with top. But the result is the same with /proc/rtai/scheduler

[pacaud@lappc-f587:~/virgo/TolmBase/v5r7/cmt]$
../$UNAME/RtaiTaskInitTest.exe&
[1] 4547
[pacaud@lappc-f587:~/virgo/TolmBase/v5r7/cmt]$
../$UNAME/RtaiTaskInitTest.exe &
[2] 4548
[pacaud@lappc-f587:~/virgo/TolmBase/v5r7/cmt]$
../$UNAME/RtaiTaskInitTest.exe &
[3] 4549
[pacaud@lappc-f587:~/virgo/TolmBase/v5r7/cmt]$
../$UNAME/RtaiTaskInitTest.exe &
[4] 4550

using:

rt_task_init_schmod (rt_get_name (0), 10, 0, 0, SCHED_FIFO, 3);

gives:

Priority  Period(ns)  FPU  Sig  State  CPU  Task  HD/SF  PID  RT_TASK *
 TIME
------------------------------------------------------------------------------
1000000000 0           Yes  No  0x3    0:1   1      0    4533
ffffc900106c0230   0
1000000010 0           Yes  No  0x0    0:1   2      0    4550
ffffc900106c4230   0
TIMED

READY
1000000010 0           Yes  No  0x0    1:2   3      0    4547
ffffc900106c1230   0
TIMED

READY
1000000010 0           Yes  No  0x0    2:4   4      0    4548
ffffc900106c2230   0
TIMED

READY
1000000010 0           Yes  No  0x0    3:8   5      0    4549
ffffc900106c3230   0
TIMED

READY

> Clearly it may be a long time standing and undetected bug.
> I've not 4 core handy, so can you check if it works when you force
> your task onto a single CPU (1, 2, 4, 8)?

Yes, it works in this case.

        Cheers,

                Emmanuel.

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