src/common/kernel-ctl/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 modify
   6  * it under the terms of the GNU General Public License, version 2 only,
   7  * as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef _LTTNG_KERNEL_CTL_H
  20 #define _LTTNG_KERNEL_CTL_H
  21
  22 #include <lttng/lttng.h>
  23 #include <common/lttng-kernel.h>
  24
  25 int kernctl_create_session(int fd);
  26 int kernctl_open_metadata(int fd, struct lttng_channel_attr *chops);
  27 int kernctl_create_channel(int fd, struct lttng_channel_attr *chops);
  28 int kernctl_create_stream(int fd);
  29 int kernctl_create_event(int fd, struct lttng_kernel_event *ev);
  30 int kernctl_add_context(int fd, struct lttng_kernel_context *ctx);
  31
  32 int kernctl_enable(int fd);
  33 int kernctl_disable(int fd);
  34 int kernctl_start_session(int fd);
  35 int kernctl_stop_session(int fd);
  36
  37 int kernctl_tracepoint_list(int fd);
  38 int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v);
  39 int kernctl_wait_quiescent(int fd);
  40 int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate);
  41
  42
  43 /* Buffer operations */
  44
  45 /* For mmap mode, readable without "get" operation */
  46 int kernctl_get_mmap_len(int fd, unsigned long *len);
  47 int kernctl_get_max_subbuf_size(int fd, unsigned long *len);
  48
  49 /*
  50  * For mmap mode, operate on the current packet (between get/put or
  51  * get_next/put_next).
  52  */
  53 int kernctl_get_mmap_read_offset(int fd, unsigned long *len);
  54 int kernctl_get_subbuf_size(int fd, unsigned long *len);
  55 int kernctl_get_padded_subbuf_size(int fd, unsigned long *len);
  56
  57 int kernctl_get_next_subbuf(int fd);
  58 int kernctl_put_next_subbuf(int fd);
  59
  60 /* snapshot */
  61 int kernctl_snapshot(int fd);
  62 int kernctl_snapshot_get_consumed(int fd, unsigned long *pos);
  63 int kernctl_snapshot_get_produced(int fd, unsigned long *pos);
  64 int kernctl_get_subbuf(int fd, unsigned long *pos);
  65 int kernctl_put_subbuf(int fd);
  66
  67 int kernctl_buffer_flush(int fd);
  68
  69 #endif /* _LTTNG_KERNEL_CTL_H */