1YIELD_TO(9) Driver Basics YIELD_TO(9)
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6 yield_to - yield the current processor to another thread in your thread
7 group, or accelerate that thread toward the processor it's on.
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10 int __sched yield_to(struct task_struct * p, bool preempt);
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13 p
14 target task
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16 preempt
17 whether task preemption is allowed or not
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20 It's the caller's job to ensure that the target task struct can't go
21 away on us before we can do any checks.
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24 true (>0) if we indeed boosted the target task. false (0) if we failed
25 to boost the target. -ESRCH if there's no task to yield to.
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28Kernel Hackers Manual 3.10 June 2019 YIELD_TO(9)