
POSIX timers under preempt_rt Linux
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POSIX timers use signals to notify user space about their
expiration
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Signal delivery path uses sleeping locks under preempt_rt
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Deferred to softirq
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Softirqs are:
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executed in the context of arbitrary task or ksoftirqd
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executed with random (e.g. non-real-time) priority
M. Sojka, P. Píša Usable Simulink Embedded Coder Target for Linux RTLWS16 8 / 22
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