X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=kernel%2Firq%2Firqdesc.c;h=3fcb6faa5fa6f518a4c1292c21dd74aef05f40e6;hb=14cdcbf57afac55489130a55ea0e8a59481531d8;hp=473b2b6eccb5e9515840e0b7b4db3d1695f81f6d;hpb=450cdfa9c5713551ab1438ab210679868b52a994;p=firefly-linux-kernel-4.4.55.git

diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 473b2b6eccb5..3fcb6faa5fa6 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -36,11 +36,19 @@ static int __init irq_affinity_setup(char *str)
 }
 __setup("irqaffinity=", irq_affinity_setup);
 
+extern struct cpumask hmp_slow_cpu_mask;
+
 static void __init init_irq_default_affinity(void)
 {
 #ifdef CONFIG_CPUMASK_OFFSTACK
 	if (!irq_default_affinity)
 		zalloc_cpumask_var(&irq_default_affinity, GFP_NOWAIT);
+#endif
+#ifdef CONFIG_SCHED_HMP
+	if (!cpumask_empty(&hmp_slow_cpu_mask)) {
+		cpumask_copy(irq_default_affinity, &hmp_slow_cpu_mask);
+		return;
+	}
 #endif
 	if (cpumask_empty(irq_default_affinity))
 		cpumask_setall(irq_default_affinity);
@@ -291,6 +299,7 @@ struct irq_desc *irq_to_desc(unsigned int irq)
 {
 	return (irq < NR_IRQS) ? irq_desc + irq : NULL;
 }
+EXPORT_SYMBOL(irq_to_desc);
 
 static void free_desc(unsigned int irq)
 {