Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sh / kernel / localtimer.c

diff --git a/kernel/arch/sh/kernel/localtimer.c b/kernel/arch/sh/kernel/localtimer.c
new file mode 100644 (file)
index 0000000..b880a7e
--- /dev/null
+++ b/kernel/arch/sh/kernel/localtimer.c
@@ -0,0 +1,66 @@
+/*
+ * Dummy local timer
+ *
+ * Copyright (C) 2008  Paul Mundt
+ *
+ * cloned from:
+ *
+ *  linux/arch/arm/mach-realview/localtimer.c
+ *
+ *  Copyright (C) 2002 ARM Ltd.
+ *  All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/smp.h>
+#include <linux/jiffies.h>
+#include <linux/percpu.h>
+#include <linux/clockchips.h>
+#include <linux/hardirq.h>
+#include <linux/irq.h>
+
+static DEFINE_PER_CPU(struct clock_event_device, local_clockevent);
+
+/*
+ * Used on SMP for either the local timer or SMP_MSG_TIMER
+ */
+void local_timer_interrupt(void)
+{
+       struct clock_event_device *clk = this_cpu_ptr(&local_clockevent);
+
+       irq_enter();
+       clk->event_handler(clk);
+       irq_exit();
+}
+
+static void dummy_timer_set_mode(enum clock_event_mode mode,
+                                struct clock_event_device *clk)
+{
+}
+
+void local_timer_setup(unsigned int cpu)
+{
+       struct clock_event_device *clk = &per_cpu(local_clockevent, cpu);
+
+       clk->name               = "dummy_timer";
+       clk->features           = CLOCK_EVT_FEAT_ONESHOT |
+                                 CLOCK_EVT_FEAT_PERIODIC |
+                                 CLOCK_EVT_FEAT_DUMMY;
+       clk->rating             = 400;
+       clk->mult               = 1;
+       clk->set_mode           = dummy_timer_set_mode;
+       clk->broadcast          = smp_timer_broadcast;
+       clk->cpumask            = cpumask_of(cpu);
+
+       clockevents_register_device(clk);
+}
+
+void local_timer_stop(unsigned int cpu)
+{
+}