[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/oprofile/oprofile_files.c b/src/kernel/linux/v4.14/drivers/oprofile/oprofile_files.c
new file mode 100644
index 0000000..ee2cfce
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/oprofile/oprofile_files.c
@@ -0,0 +1,201 @@
+/**
+ * @file oprofile_files.c
+ *
+ * @remark Copyright 2002 OProfile authors
+ * @remark Read the file COPYING
+ *
+ * @author John Levon <levon@movementarian.org>
+ */
+
+#include <linux/fs.h>
+#include <linux/oprofile.h>
+#include <linux/jiffies.h>
+
+#include "event_buffer.h"
+#include "oprofile_stats.h"
+#include "oprof.h"
+
+#define BUFFER_SIZE_DEFAULT 131072
+#define CPU_BUFFER_SIZE_DEFAULT 8192
+#define BUFFER_WATERSHED_DEFAULT 32768 /* FIXME: tune */
+#define TIME_SLICE_DEFAULT 1
+
+unsigned long oprofile_buffer_size;
+unsigned long oprofile_cpu_buffer_size;
+unsigned long oprofile_buffer_watershed;
+unsigned long oprofile_time_slice;
+
+#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
+
+static ssize_t timeout_read(struct file *file, char __user *buf,
+ size_t count, loff_t *offset)
+{
+ return oprofilefs_ulong_to_user(jiffies_to_msecs(oprofile_time_slice),
+ buf, count, offset);
+}
+
+
+static ssize_t timeout_write(struct file *file, char const __user *buf,
+ size_t count, loff_t *offset)
+{
+ unsigned long val;
+ int retval;
+
+ if (*offset)
+ return -EINVAL;
+
+ retval = oprofilefs_ulong_from_user(&val, buf, count);
+ if (retval <= 0)
+ return retval;
+
+ retval = oprofile_set_timeout(val);
+
+ if (retval)
+ return retval;
+ return count;
+}
+
+
+static const struct file_operations timeout_fops = {
+ .read = timeout_read,
+ .write = timeout_write,
+ .llseek = default_llseek,
+};
+
+#endif
+
+
+static ssize_t depth_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
+{
+ return oprofilefs_ulong_to_user(oprofile_backtrace_depth, buf, count,
+ offset);
+}
+
+
+static ssize_t depth_write(struct file *file, char const __user *buf, size_t count, loff_t *offset)
+{
+ unsigned long val;
+ int retval;
+
+ if (*offset)
+ return -EINVAL;
+
+ if (!oprofile_ops.backtrace)
+ return -EINVAL;
+
+ retval = oprofilefs_ulong_from_user(&val, buf, count);
+ if (retval <= 0)
+ return retval;
+
+ retval = oprofile_set_ulong(&oprofile_backtrace_depth, val);
+ if (retval)
+ return retval;
+
+ return count;
+}
+
+
+static const struct file_operations depth_fops = {
+ .read = depth_read,
+ .write = depth_write,
+ .llseek = default_llseek,
+};
+
+
+static ssize_t pointer_size_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
+{
+ return oprofilefs_ulong_to_user(sizeof(void *), buf, count, offset);
+}
+
+
+static const struct file_operations pointer_size_fops = {
+ .read = pointer_size_read,
+ .llseek = default_llseek,
+};
+
+
+static ssize_t cpu_type_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
+{
+ return oprofilefs_str_to_user(oprofile_ops.cpu_type, buf, count, offset);
+}
+
+
+static const struct file_operations cpu_type_fops = {
+ .read = cpu_type_read,
+ .llseek = default_llseek,
+};
+
+
+static ssize_t enable_read(struct file *file, char __user *buf, size_t count, loff_t *offset)
+{
+ return oprofilefs_ulong_to_user(oprofile_started, buf, count, offset);
+}
+
+
+static ssize_t enable_write(struct file *file, char const __user *buf, size_t count, loff_t *offset)
+{
+ unsigned long val;
+ int retval;
+
+ if (*offset)
+ return -EINVAL;
+
+ retval = oprofilefs_ulong_from_user(&val, buf, count);
+ if (retval <= 0)
+ return retval;
+
+ retval = 0;
+ if (val)
+ retval = oprofile_start();
+ else
+ oprofile_stop();
+
+ if (retval)
+ return retval;
+ return count;
+}
+
+
+static const struct file_operations enable_fops = {
+ .read = enable_read,
+ .write = enable_write,
+ .llseek = default_llseek,
+};
+
+
+static ssize_t dump_write(struct file *file, char const __user *buf, size_t count, loff_t *offset)
+{
+ wake_up_buffer_waiter();
+ return count;
+}
+
+
+static const struct file_operations dump_fops = {
+ .write = dump_write,
+ .llseek = noop_llseek,
+};
+
+void oprofile_create_files(struct dentry *root)
+{
+ /* reinitialize default values */
+ oprofile_buffer_size = BUFFER_SIZE_DEFAULT;
+ oprofile_cpu_buffer_size = CPU_BUFFER_SIZE_DEFAULT;
+ oprofile_buffer_watershed = BUFFER_WATERSHED_DEFAULT;
+ oprofile_time_slice = msecs_to_jiffies(TIME_SLICE_DEFAULT);
+
+ oprofilefs_create_file(root, "enable", &enable_fops);
+ oprofilefs_create_file_perm(root, "dump", &dump_fops, 0666);
+ oprofilefs_create_file(root, "buffer", &event_buffer_fops);
+ oprofilefs_create_ulong(root, "buffer_size", &oprofile_buffer_size);
+ oprofilefs_create_ulong(root, "buffer_watershed", &oprofile_buffer_watershed);
+ oprofilefs_create_ulong(root, "cpu_buffer_size", &oprofile_cpu_buffer_size);
+ oprofilefs_create_file(root, "cpu_type", &cpu_type_fops);
+ oprofilefs_create_file(root, "backtrace_depth", &depth_fops);
+ oprofilefs_create_file(root, "pointer_size", &pointer_size_fops);
+#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
+ oprofilefs_create_file(root, "time_slice", &timeout_fops);
+#endif
+ oprofile_create_stats_files(root);
+ if (oprofile_ops.create_files)
+ oprofile_ops.create_files(root);
+}