rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/block/blk-ioc.c
..
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@@ -9,6 +9,7 @@
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 #include <linux/blkdev.h>
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 #include <linux/slab.h>
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 #include <linux/sched/task.h>
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+#include <linux/delay.h>
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 #include "blk.h"
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..
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@@ -119,7 +120,7 @@
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 			spin_unlock(q->queue_lock);
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 		} else {
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 			spin_unlock_irqrestore(&ioc->lock, flags);
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-			cpu_relax();
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+			cpu_chill();
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 			spin_lock_irqsave_nested(&ioc->lock, flags, 1);
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 		}
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 	}
..
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@@ -203,7 +204,7 @@
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 				spin_unlock(icq->q->queue_lock);
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 			} else {
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 				spin_unlock_irqrestore(&ioc->lock, flags);
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-				cpu_relax();
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+				cpu_chill();
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 				goto retry;
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 			}
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 		}