rk3568 rt init

hc

2023-11-06 e3e12f52b214121840b44c91de5b3e5af5d3eb84

 kernel/kernel/irq/manage.c
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@@ -24,6 +24,7 @@
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 #include "internals.h"
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 #ifdef CONFIG_IRQ_FORCED_THREADING
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+# ifndef CONFIG_PREEMPT_RT_BASE
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 __read_mostly bool force_irqthreads;
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 EXPORT_SYMBOL_GPL(force_irqthreads);
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@@ -33,6 +34,7 @@
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 	return 0;
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 }
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 early_param("threadirqs", setup_forced_irqthreads);
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+# endif
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 #endif
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 static void __synchronize_hardirq(struct irq_desc *desc, bool sync_chip)
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@@ -1095,6 +1097,12 @@
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 		if (action_ret == IRQ_WAKE_THREAD)
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 			irq_wake_secondary(desc, action);
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+#ifdef CONFIG_PREEMPT_RT_FULL
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+		migrate_disable();
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+		add_interrupt_randomness(action->irq, 0,
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+				 desc->random_ip ^ (unsigned long) action);
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+		migrate_enable();
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+#endif
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 		wake_threads_waitq(desc);
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 	}
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@@ -1506,6 +1514,9 @@
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 			irq_settings_set_no_balancing(desc);
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 			irqd_set(&desc->irq_data, IRQD_NO_BALANCING);
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 		}
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+
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+		if (new->flags & IRQF_NO_SOFTIRQ_CALL)
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+			irq_settings_set_no_softirq_call(desc);
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 		if (irq_settings_can_autoenable(desc)) {
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 			irq_startup(desc, IRQ_RESEND, IRQ_START_COND);
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@@ -2312,7 +2323,7 @@
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  *	This call sets the internal irqchip state of an interrupt,
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  *	depending on the value of @which.
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  *
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- *	This function should be called with preemption disabled if the
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+ *	This function should be called with migration disabled if the
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  *	interrupt controller has per-cpu registers.
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  */
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 int irq_set_irqchip_state(unsigned int irq, enum irqchip_irq_state which,