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00f0dadde8
Since commit 0c43094f8c ("eventpoll: Replace rwlock with spinlock"),
epoll_wait is real-time-safe syscall for sleeping.
Add epoll_wait to the list of rt-safe sleeping APIs.
Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Gabriele Monaco <gmonaco@redhat.com>
Link: https://lore.kernel.org/r/20260401130828.3115428-1-namcao@linutronix.de
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
24 lines
768 B
Plaintext
24 lines
768 B
Plaintext
RULE = always ((RT and SLEEP) imply (RT_FRIENDLY_SLEEP or ALLOWLIST))
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RT_FRIENDLY_SLEEP = (RT_VALID_SLEEP_REASON or KERNEL_THREAD)
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and ((not WAKE) until RT_FRIENDLY_WAKE)
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RT_VALID_SLEEP_REASON = FUTEX_WAIT
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or RT_FRIENDLY_NANOSLEEP
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or EPOLL_WAIT
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RT_FRIENDLY_NANOSLEEP = CLOCK_NANOSLEEP
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and NANOSLEEP_TIMER_ABSTIME
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and (NANOSLEEP_CLOCK_MONOTONIC or NANOSLEEP_CLOCK_TAI)
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RT_FRIENDLY_WAKE = WOKEN_BY_EQUAL_OR_HIGHER_PRIO
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or WOKEN_BY_HARDIRQ
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or WOKEN_BY_NMI
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or ABORT_SLEEP
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or KTHREAD_SHOULD_STOP
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ALLOWLIST = BLOCK_ON_RT_MUTEX
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or FUTEX_LOCK_PI
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or TASK_IS_RCU
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or TASK_IS_MIGRATION
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