Set CPU Affinity for handling interrupt

When HMP for exynos series is enabled, cpu affinity for
handling interrupt will be set only for little cores.
Otherwise, all cores can catch interrupt and handle it.

Change-Id: Id6a37fd0e7e97ed240c94f47c91d096b5f5211cd
Signed-off-by: Eunok Jo <eunok25.jo@samsung.com>

diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c
index 27708c91c5a61add174b8f5470744e1957bc6f19..ed3a7d1698868fea8914a9bd94e6e04328d8f78e 100644 (file)
--- a/drivers/dma/pl330.c
+++ b/drivers/dma/pl330.c
@@ -27,6 +27,7 @@
 #include <linux/of_dma.h>
 #include <linux/err.h>
 #include <linux/pm_runtime.h>
+#include <linux/cpumask.h>
 
 #include "dmaengine.h"
 #ifdef CONFIG_EXYNOS_PD
@@ -3100,7 +3101,11 @@ static int pl330_resume(struct device *dev)
                for (i = 0; i < AMBA_NR_IRQS; i++) {
                        int irq = pl330->irqnum_having_multi[i];
                        if (irq)
+#if defined(CONFIG_SCHED_HMP)
+                               irq_set_affinity(irq, &hmp_slow_cpu_mask);
+#else
                                irq_set_affinity(irq, cpu_all_mask);
+#endif
                        else
                                break;
                }
@@ -3182,7 +3187,11 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id)
                                return ret;
 
                        if(pl330->multi_irq) {
+#if defined(CONFIG_SCHED_HMP)
+                               irq_set_affinity(irq, &hmp_slow_cpu_mask);
+#else
                                irq_set_affinity(irq, cpu_all_mask);
+#endif
                                pl330->irqnum_having_multi[count_irq++] = irq;
                        }
                } else {