#include <linux/module.h>
#include <linux/debugfs.h>
+#include <linux/proc_fs.h>
#include <linux/anon_inodes.h>
#include <linux/file.h>
#include <linux/uaccess.h>
*/
static struct dentry *lttng_dentry;
+static struct proc_dir_entry *lttng_proc_dentry;
static const struct file_operations lttng_fops;
static const struct file_operations lttng_session_fops;
static const struct file_operations lttng_channel_fops;
* We tolerate no failure path after event creation. It will stay
* invariant for the rest of the session.
*/
- event = ltt_event_create(channel, &metadata_params, NULL);
+ event = ltt_event_create(channel, &metadata_params, NULL, NULL);
if (!event) {
goto create_error;
}
default:
break;
}
- event_fd = get_unused_fd();
- if (event_fd < 0) {
- ret = event_fd;
- goto fd_error;
- }
- event_file = anon_inode_getfile("[lttng_event]",
- <tng_event_fops,
- NULL, O_RDWR);
- if (IS_ERR(event_file)) {
- ret = PTR_ERR(event_file);
- goto file_error;
- }
- /*
- * We tolerate no failure path after event creation. It will stay
- * invariant for the rest of the session.
- */
- event = ltt_event_create(channel, &event_param, NULL);
- if (!event) {
- ret = -EINVAL;
- goto event_error;
+ switch (event_param.instrumentation) {
+ default:
+ event_fd = get_unused_fd();
+ if (event_fd < 0) {
+ ret = event_fd;
+ goto fd_error;
+ }
+ event_file = anon_inode_getfile("[lttng_event]",
+ <tng_event_fops,
+ NULL, O_RDWR);
+ if (IS_ERR(event_file)) {
+ ret = PTR_ERR(event_file);
+ goto file_error;
+ }
+ /*
+ * We tolerate no failure path after event creation. It
+ * will stay invariant for the rest of the session.
+ */
+ event = ltt_event_create(channel, &event_param, NULL, NULL);
+ if (!event) {
+ ret = -EINVAL;
+ goto event_error;
+ }
+ event_file->private_data = event;
+ fd_install(event_fd, event_file);
+ /* The event holds a reference on the channel */
+ atomic_long_inc(&channel_file->f_count);
+ break;
+ case LTTNG_KERNEL_SYSCALLS:
+ ret = lttng_syscalls_register(channel, NULL);
+ if (ret)
+ goto fd_error;
+ event_fd = 0;
+ break;
}
- event_file->private_data = event;
- fd_install(event_fd, event_file);
- /* The event holds a reference on the channel */
- atomic_long_inc(&channel_file->f_count);
return event_fd;
event_error:
wrapper_vmalloc_sync_all();
lttng_dentry = debugfs_create_file("lttng", S_IWUSR, NULL, NULL,
- <tng_fops);
- if (IS_ERR(lttng_dentry) || !lttng_dentry) {
+ <tng_fops);
+ if (IS_ERR(lttng_dentry))
+ lttng_dentry = NULL;
+
+ lttng_proc_dentry = proc_create_data("lttng", S_IWUSR, NULL,
+ <tng_fops, NULL);
+
+ if (!lttng_dentry && !lttng_proc_dentry) {
printk(KERN_ERR "Error creating LTTng control file\n");
ret = -ENOMEM;
goto error;
void __exit ltt_debugfs_abi_exit(void)
{
- debugfs_remove(lttng_dentry);
+ if (lttng_dentry)
+ debugfs_remove(lttng_dentry);
+ if (lttng_proc_dentry)
+ remove_proc_entry("lttng", NULL);
}