sched/deadline: Document behavior of sched_yield()
This is a documentation only patch, explaining the behavior of sched_yield() when a SCHED_DEADLINE task calls it (give up remaining runtime and be throttled until next period begins). Signed-off-by: NTommaso Cucinotta <tommaso.cucinotta@sssup.it> Signed-off-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: NJuri Lelli <juri.lelli@arm.com> Reviewed-by: NLuca Abeni <luca.abeni@unitn.it> Reviewed-by: NDaniel Bristot de Oliveira <bristot@redhat.com> Cc: Juri Lelli <juri.lelli@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-dl@retis.sssup.it Link: http://lkml.kernel.org/r/1473443117-11794-2-git-send-email-tommaso.cucinotta@sssup.itSigned-off-by: NIngo Molnar <mingo@kernel.org>
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