linux-imx
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committed 6af4ea0ba70x
static ssize_t enable_write(struct file *file, char const __user *buf, size_t count, loff_t *offset)/** * @file oprofile_files.c * * @remark Copyright 2002 OProfile authors * @remark Read the file COPYING * * @author John Levon <levon@movementarian.org> *//* FIXME: tune */unsigned long oprofile_buffer_size;unsigned long oprofile_cpu_buffer_size;unsigned long oprofile_buffer_watershed;unsigned long oprofile_time_slice;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,};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;