vserver 1.9.5.x5

[linux-2.6.git] / drivers / oprofile / oprofile_files.c

diff --git a/drivers/oprofile/oprofile_files.c b/drivers/oprofile/oprofile_files.c
index b22d4ea..9abedea 100644 (file)
--- a/drivers/oprofile/oprofile_files.c
+++ b/drivers/oprofile/oprofile_files.c
@@ -18,6 +18,37 @@ unsigned long fs_buffer_size = 131072;
 unsigned long fs_cpu_buffer_size = 8192;
 unsigned long fs_buffer_watershed = 32768; /* FIXME: tune */
 
+static ssize_t depth_read(struct file * file, char * buf, size_t count, loff_t * offset)
+{
+       return oprofilefs_ulong_to_user(backtrace_depth, buf, count, offset);
+}
+
+
+static ssize_t depth_write(struct file * file, char const * 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)
+               return retval;
+
+       retval = oprofile_set_backtrace(val);
+
+       if (retval)
+               return retval;
+       return count;
+}
+
+
+static struct file_operations depth_fops = {
+       .read           = depth_read,
+       .write          = depth_write
+};
+
  
 static ssize_t pointer_size_read(struct file * file, char __user * buf, size_t count, loff_t * offset)
 {
@@ -32,7 +63,7 @@ static struct file_operations pointer_size_fops = {
 
 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);
+       return oprofilefs_str_to_user(oprofile_ops.cpu_type, buf, count, offset);
 }
  
  
@@ -47,7 +78,7 @@ static ssize_t enable_read(struct file * file, char __user * buf, size_t count,
 }
 
 
-static ssize_t enable_write(struct file *file, char const __user * buf, size_t count, loff_t * offset)
+static ssize_t enable_write(struct file * file, char const __user * buf, size_t count, loff_t * offset)
 {
        unsigned long val;
        int retval;
@@ -76,7 +107,7 @@ static struct file_operations enable_fops = {
 };
 
 
-static ssize_t dump_write(struct file *file, char const __user * buf, size_t count, loff_t * offset)
+static ssize_t dump_write(struct file * file, char const __user * buf, size_t count, loff_t * offset)
 {
        wake_up_buffer_waiter();
        return count;
@@ -96,8 +127,9 @@ void oprofile_create_files(struct super_block * sb, struct dentry * root)
        oprofilefs_create_ulong(sb, root, "buffer_watershed", &fs_buffer_watershed);
        oprofilefs_create_ulong(sb, root, "cpu_buffer_size", &fs_cpu_buffer_size);
        oprofilefs_create_file(sb, root, "cpu_type", &cpu_type_fops); 
+       oprofilefs_create_file(sb, root, "backtrace_depth", &depth_fops);
        oprofilefs_create_file(sb, root, "pointer_size", &pointer_size_fops);
        oprofile_create_stats_files(sb, root);
-       if (oprofile_ops->create_files)
-               oprofile_ops->create_files(sb, root);
+       if (oprofile_ops.create_files)
+               oprofile_ops.create_files(sb, root);
 }