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Hello all, I am writing an RTDM driver that needs a simple task suspend/resume. I have a simple ioctl() that needs to initiate some io and then sleep until an interrupt occurs. I have been trying to use rt_task_suspend() and rt_task_resume(). I tried to save the calling task id using rt_task_self() inside open(). When I try to suspend the task in the ioclt() rt_task_suspend() returns an EINVAL. (I looked at the code and it appears to fail a magic number test.) I then compared the calling task id before the open() to the task id inside open() and they are different. Is there a way to retrieve the calling task id without explicitly sending it to the ioctl()? Sean |
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