include/lttng-kernel-ctl.h

   1 /*
   2  * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca>
   3  *                      Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; only version 2
   8  * of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18  */
  19
  20 #ifndef _LTTNG_KERNEL_CTL_H
  21 #define _LTTNG_KERNEL_CTL_H
  22
  23 #include <lttng/lttng.h>
  24 #include <lttng-kernel.h>
  25
  26 int kernctl_create_session(int fd);
  27 int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops);
  28 int kernctl_create_channel(int fd, struct lttng_channel_attr *chops);
  29 int kernctl_create_stream(int fd);
  30 int kernctl_create_event(int fd, struct lttng_kernel_event *ev);
  31 int kernctl_add_context(int fd, struct lttng_kernel_context *ctx);
  32
  33 int kernctl_enable(int fd);
  34 int kernctl_disable(int fd);
  35 int kernctl_start_session(int fd);
  36 int kernctl_stop_session(int fd);
  37
  38 int kernctl_tracepoint_list(int fd);
  39 int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v);
  40 int kernctl_wait_quiescent(int fd);
  41 int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate);
  42
  43
  44 /* Buffer operations */
  45
  46 /* For mmap mode, readable without "get" operation */
  47 int kernctl_get_mmap_len(int fd, unsigned long *len);
  48 int kernctl_get_max_subbuf_size(int fd, unsigned long *len);
  49
  50 /*
  51  * For mmap mode, operate on the current packet (between get/put or
  52  * get_next/put_next).
  53  */
  54 int kernctl_get_mmap_read_offset(int fd, unsigned long *len);
  55 int kernctl_get_subbuf_size(int fd, unsigned long *len);
  56 int kernctl_get_padded_subbuf_size(int fd, unsigned long *len);
  57
  58 int kernctl_get_next_subbuf(int fd);
  59 int kernctl_put_next_subbuf(int fd);
  60
  61 /* snapshot */
  62 int kernctl_snapshot(int fd);
  63 int kernctl_snapshot_get_consumed(int fd, unsigned long *pos);
  64 int kernctl_snapshot_get_produced(int fd, unsigned long *pos);
  65 int kernctl_get_subbuf(int fd, unsigned long *pos);
  66 int kernctl_put_subbuf(int fd);
  67
  68 int kernctl_buffer_flush(int fd);
  69
  70 #endif /* _LTTNG_KERNEL_CTL_H */