Remove deprecated code

[lttng-modules.git] / ltt-userspace-event.c

diff --git a/ltt-userspace-event.c b/ltt-userspace-event.c
deleted file mode 100644 (file)
index c716d72..0000000
--- a/ltt-userspace-event.c
+++ /dev/null
@@ -1,122 +0,0 @@
-/*
- * Copyright (C) 2008 Mathieu Desnoyers
- *
- * Dual LGPL v2.1/GPL v2 license.
- */
-
-#include <linux/module.h>
-#include <linux/marker.h>
-#include <linux/uaccess.h>
-#include <linux/gfp.h>
-#include <linux/fs.h>
-#include <linux/debugfs.h>
-#include <linux/slab.h>
-
-#include "ltt-type-serializer.h"
-
-#define LTT_WRITE_EVENT_FILE   "write_event"
-
-DEFINE_MARKER(userspace, event, "string %s");
-static struct dentry *ltt_event_file;
-
-/**
- * write_event - write a userspace string into the trace system
- * @file: file pointer
- * @user_buf: user string
- * @count: length to copy, including the final NULL
- * @ppos: unused
- *
- * Copy a string into a trace event, in channel "userspace", event "event".
- * Copies until either \n or \0 is reached.
- * On success, returns the number of bytes copied from the source, including the
- * \n or \0 character (if there was one in the count range). It cannot return
- * more than count.
- * Inspired from tracing_mark_write implementation from Steven Rostedt and
- * Ingo Molnar.
- */
-static
-ssize_t write_event(struct file *file, const char __user *user_buf,
-                   size_t count, loff_t *ppos)
-{
-       struct marker *marker;
-       char *buf, *end;
-       long copycount;
-       ssize_t ret;
-
-       buf = kmalloc(count + 1, GFP_KERNEL);
-       if (!buf) {
-               ret = -ENOMEM;
-               goto string_out;
-       }
-       copycount = strncpy_from_user(buf, user_buf, count);
-       if (copycount < 0) {
-               ret = -EFAULT;
-               goto string_err;
-       }
-       /* Cut from the first nil or newline. */
-       buf[copycount] = '\0';
-       end = strchr(buf, '\n');
-       if (end) {
-               *end = '\0';
-               copycount = end - buf;
-       }
-       /* Add final \0 to copycount */
-       copycount++;
-       marker = &GET_MARKER(userspace, event);
-       ltt_specialized_trace(marker, marker->single.probe_private, buf,
-                             copycount, sizeof(char));
-       /* If there is no \0 nor \n in count, do not return a larger value */
-       ret = min_t(size_t, copycount, count);
-string_err:
-       kfree(buf);
-string_out:
-       return ret;
-}
-
-static const struct file_operations ltt_userspace_operations = {
-       .write = write_event,
-};
-
-static int __init ltt_userspace_init(void)
-{
-       struct dentry *ltt_root_dentry;
-       int err = 0;
-
-       ltt_root_dentry = get_ltt_root();
-       if (!ltt_root_dentry) {
-               err = -ENOENT;
-               goto err_no_root;
-       }
-
-       ltt_event_file = debugfs_create_file(LTT_WRITE_EVENT_FILE,
-                                            S_IWUGO,
-                                            ltt_root_dentry,
-                                            NULL,
-                                            &ltt_userspace_operations);
-       if (IS_ERR(ltt_event_file) || !ltt_event_file) {
-               printk(KERN_ERR
-                       "ltt_userspace_init: failed to create file %s\n",
-                       LTT_WRITE_EVENT_FILE);
-               err = -EPERM;
-               goto err_no_file;
-       }
-
-       return err;
-err_no_file:
-       put_ltt_root();
-err_no_root:
-       return err;
-}
-
-static void __exit ltt_userspace_exit(void)
-{
-       debugfs_remove(ltt_event_file);
-       put_ltt_root();
-}
-
-module_init(ltt_userspace_init);
-module_exit(ltt_userspace_exit);
-
-MODULE_LICENSE("GPL and additional rights");
-MODULE_AUTHOR("Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>");
-MODULE_DESCRIPTION("Linux Trace Toolkit Userspace Event");