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 #include <common/lttng-kernel-old.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_syscall_list(int fd);
  40 int kernctl_tracer_version(int fd, struct lttng_kernel_tracer_version *v);
  41 int kernctl_wait_quiescent(int fd);
  42 int kernctl_calibrate(int fd, struct lttng_kernel_calibrate *calibrate);
  43
  44 int kernctl_enable_syscall(int fd, const char *syscall_name);
  45 int kernctl_disable_syscall(int fd, const char *syscall_name);
  46
  47 /* Buffer operations */
  48
  49 /* For mmap mode, readable without "get" operation */
  50 int kernctl_get_mmap_len(int fd, unsigned long *len);
  51 int kernctl_get_max_subbuf_size(int fd, unsigned long *len);
  52
  53 /*
  54  * For mmap mode, operate on the current packet (between get/put or
  55  * get_next/put_next).
  56  */
  57 int kernctl_get_mmap_read_offset(int fd, unsigned long *len);
  58 int kernctl_get_subbuf_size(int fd, unsigned long *len);
  59 int kernctl_get_padded_subbuf_size(int fd, unsigned long *len);
  60
  61 int kernctl_get_next_subbuf(int fd);
  62 int kernctl_put_next_subbuf(int fd);
  63
  64 /* snapshot */
  65 int kernctl_snapshot(int fd);
  66 int kernctl_snapshot_get_consumed(int fd, unsigned long *pos);
  67 int kernctl_snapshot_get_produced(int fd, unsigned long *pos);
  68 int kernctl_get_subbuf(int fd, unsigned long *pos);
  69 int kernctl_put_subbuf(int fd);
  70
  71 int kernctl_buffer_flush(int fd);
  72
  73 /* index */
  74 int kernctl_get_timestamp_begin(int fd, uint64_t *timestamp_begin);
  75 int kernctl_get_timestamp_end(int fd, uint64_t *timestamp_end);
  76 int kernctl_get_events_discarded(int fd, uint64_t *events_discarded);
  77 int kernctl_get_content_size(int fd, uint64_t *content_size);
  78 int kernctl_get_packet_size(int fd, uint64_t *packet_size);
  79 int kernctl_get_stream_id(int fd, uint64_t *stream_id);
  80 int kernctl_get_current_timestamp(int fd, uint64_t *ts);
  81
  82 #endif /* _LTTNG_KERNEL_CTL_H */