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2024-11-01 7e970c18f85f99acc678d90128b6e01dce1bf273

 kernel/arch/arm/kernel/process.c
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@@ -71,6 +71,7 @@
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 		arm_pm_idle();
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 	else
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 		cpu_do_idle();
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+	hard_cond_local_irq_enable();
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 	raw_local_irq_enable();
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 }
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@@ -448,3 +449,28 @@
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 	return ret;
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 }
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 #endif
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+
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+#ifdef CONFIG_IRQ_PIPELINE
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+
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+/*
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+ * When pipelining interrupts, we have to reconcile the hardware and
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+ * the virtual states. Hard irqs are off on entry while the current
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+ * stage has to be unstalled: fix this up by stalling the in-band
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+ * stage on entry, unstalling on exit.
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+ */
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+asmlinkage void __sched arm_preempt_schedule_irq(void)
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+{
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+	WARN_ON_ONCE(irq_pipeline_debug() && test_inband_stall());
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+	stall_inband_nocheck();
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+	preempt_schedule_irq();
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+	unstall_inband_nocheck();
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+}
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+
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+#else
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+
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+asmlinkage void __sched arm_preempt_schedule_irq(void)
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+{
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+	preempt_schedule_irq();
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+}
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+
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+#endif