Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 227 insertions, 0 deletions

diff --git a/drivers/oprofile/timer_int.c b/drivers/oprofile/timer_int.c
new file mode 100644
index 00000000..246c24a9
--- /dev/null
+++ b/drivers/oprofile/timer_int.c
@@ -0,0 +1,227 @@
+/**
+ * @file timer_int.c
+ *
+ * @remark Copyright 2002 OProfile authors
+ * @remark Read the file COPYING
+ *
+ * @author John Levon <levon@movementarian.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/notifier.h>
+#include <linux/smp.h>
+#include <linux/oprofile.h>
+#include <linux/profile.h>
+#include <linux/init.h>
+#include <linux/cpu.h>
+#include <linux/hrtimer.h>
+#include <asm/irq_regs.h>
+#include <asm/ptrace.h>
+
+/* 2013-01-14 YJChen: Add Begin */
+#include <asm/mach/irq.h>
+#include <linux/rtc.h>
+#include <mach/hardware.h>
+/* 2013-01-14 YJChen: Add End */
+
+#include "oprof.h"
+
+static DEFINE_PER_CPU(struct hrtimer, oprofile_hrtimer);
+static int ctr_running;
+
+static enum hrtimer_restart oprofile_hrtimer_notify(struct hrtimer *hrtimer)
+{
+	oprofile_add_sample(get_irq_regs(), 0);
+	hrtimer_forward_now(hrtimer, ns_to_ktime(TICK_NSEC));
+	return HRTIMER_RESTART;
+}
+
+static void __oprofile_hrtimer_start(void *unused)
+{
+	struct hrtimer *hrtimer = &__get_cpu_var(oprofile_hrtimer);
+
+	if (!ctr_running)
+		return;
+
+	hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+	hrtimer->function = oprofile_hrtimer_notify;
+
+	hrtimer_start(hrtimer, ns_to_ktime(TICK_NSEC),
+		      HRTIMER_MODE_REL_PINNED);
+}
+
+static int oprofile_hrtimer_start(void)
+{
+	get_online_cpus();
+	ctr_running = 1;
+	on_each_cpu(__oprofile_hrtimer_start, NULL, 1);
+	put_online_cpus();
+	return 0;
+}
+
+static void __oprofile_hrtimer_stop(int cpu)
+{
+	struct hrtimer *hrtimer = &per_cpu(oprofile_hrtimer, cpu);
+
+	if (!ctr_running)
+		return;
+
+	hrtimer_cancel(hrtimer);
+}
+
+static void oprofile_hrtimer_stop(void)
+{
+	int cpu;
+
+	get_online_cpus();
+	for_each_online_cpu(cpu)
+		__oprofile_hrtimer_stop(cpu);
+	ctr_running = 0;
+	put_online_cpus();
+}
+
+static int __cpuinit oprofile_cpu_notify(struct notifier_block *self,
+					 unsigned long action, void *hcpu)
+{
+	long cpu = (long) hcpu;
+
+	switch (action) {
+	case CPU_ONLINE:
+	case CPU_ONLINE_FROZEN:
+		smp_call_function_single(cpu, __oprofile_hrtimer_start,
+					 NULL, 1);
+		break;
+	case CPU_DEAD:
+	case CPU_DEAD_FROZEN:
+		__oprofile_hrtimer_stop(cpu);
+		break;
+	}
+	return NOTIFY_OK;
+}
+
+static struct notifier_block __refdata oprofile_cpu_notifier = {
+	.notifier_call = oprofile_cpu_notify,
+};
+
+static int oprofile_hrtimer_setup(void)
+{
+	return register_hotcpu_notifier(&oprofile_cpu_notifier);
+}
+
+static void oprofile_hrtimer_shutdown(void)
+{
+	unregister_hotcpu_notifier(&oprofile_cpu_notifier);
+}
+
+int oprofile_timer_init(struct oprofile_operations *ops)
+{
+	ops->create_files	= NULL;
+	ops->setup		= oprofile_hrtimer_setup;
+	ops->shutdown	= oprofile_hrtimer_shutdown;
+	ops->start		= oprofile_hrtimer_start;
+	ops->stop		= oprofile_hrtimer_stop;
+	ops->cpu_type	= "timer";
+	printk(KERN_INFO "oprofile: using timer interrupt.\n");
+	return 0;
+}
+
+/* 2013-01-14 YJChen: Add Begin */
+extern unsigned int wmt_read_oscr(void);
+
+static int timer_notify(struct pt_regs *regs)
+{
+	oprofile_add_sample(regs, 0);
+	return 0;
+}
+
+static irqreturn_t
+wmt_timer2_interrupt(int irq, void *dev_id)
+{
+    unsigned int next_match;
+    int flag = 0;
+    do {
+        struct pt_regs *regs;
+
+        if (flag == 1)
+            printk(KERN_INFO "wmt_timer2_interrupt while\n");
+
+        flag = 1;
+
+        //struct pt_regs *regs = get_irq_regs(); // fix compile warning: ISO C90 forbids mixed declarations and code
+        regs = get_irq_regs();
+        timer_notify(regs);
+
+        /* Clear match on OS Timer 2 */
+        OSTS_VAL = OSTS_M2;
+        next_match = OSM2_VAL = wmt_read_oscr() + TIMER2_LATCH;
+    } while ((signed long)(next_match - wmt_read_oscr()) <= 10/*0*/);
+
+    return IRQ_HANDLED;
+}
+
+static int timer2_start(void)
+{
+    unsigned int nCount;
+    unsigned int i = 0;
+
+    /* Use OS Timer 2 as oprofile timer. */
+    i = request_irq(IRQ_OST2, wmt_timer2_interrupt, IRQF_DISABLED, "timer2", NULL);
+    if (i != 0) {
+        printk(KERN_ERR "oprofile: unable to request IRQ%u for timer2\n", IRQ_OST2);
+        return i;
+    }
+
+    nCount = wmt_read_oscr();
+    //printk(KERN_INFO "%s Enter nCount=%d\n", __FUNCTION__, nCount);
+
+    /* Set initial match */
+    while (OSTA_VAL & OSTA_MWA2)
+        ;
+
+    /* Disable match on timer 2 to cause interrupts. */
+    OSTI_VAL &= ~OSTI_E2;
+
+    OSM2_VAL = nCount + TIMER2_LATCH;
+
+    /* Enable match on timer 2 to cause interrupts. */
+    OSTI_VAL |= OSTI_E2;
+
+    /* Let OS Timer free run. */
+    if ((OSTC_VAL & OSTC_ENABLE) == 0)
+        OSTC_VAL |= OSTC_ENABLE;
+
+	return 0;
+}
+
+static void timer2_stop(void)
+{
+    /* Disable match on timer 2 to cause interrupts. */
+    OSTI_VAL &= ~OSTI_E2;
+
+    /* Set initial match */
+    while (OSTA_VAL & OSTA_MWA2)
+        ;
+
+    OSM2_VAL = 0;
+
+    free_irq(IRQ_OST2, NULL);
+}
+
+int __init oprofile_timer2_init(struct oprofile_operations *ops)
+{
+	int rc;
+
+	rc = register_hotcpu_notifier(&oprofile_cpu_notifier);
+	if (rc)
+		return rc;
+
+    ops->create_files = NULL;
+    ops->setup = oprofile_hrtimer_setup;
+    ops->shutdown = oprofile_hrtimer_shutdown;
+    ops->start = timer2_start;
+    ops->stop = timer2_stop;
+    ops->cpu_type = "timer";
+	printk(KERN_INFO "oprofile: using timer2 interrupt.\n");
+    return 0;
+}
+/* 2013-01-14 YJChen: Add End */
\ No newline at end of file