| 1 | /* |
| 2 | * Copyright (C) 2011 - Julien Desfossez <julien.desfossez@polymtl.ca> |
| 3 | * Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 4 | * David Goulet <david.goulet@polymtl.ca> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; only version 2 |
| 9 | * of the License. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | #ifndef _LTTNG_KERNEL_H |
| 22 | #define _LTTNG_KERNEL_H |
| 23 | |
| 24 | #include "lttng-share.h" |
| 25 | |
| 26 | #define LTTNG_SYM_NAME_LEN 128 |
| 27 | |
| 28 | /* |
| 29 | * LTTng DebugFS ABI structures. |
| 30 | * |
| 31 | * This is the kernel ABI copied from lttng-modules tree. |
| 32 | */ |
| 33 | |
| 34 | enum lttng_kernel_instrumentation { |
| 35 | LTTNG_KERNEL_TRACEPOINT = 0, |
| 36 | LTTNG_KERNEL_KPROBE = 1, |
| 37 | LTTNG_KERNEL_FUNCTION = 2, |
| 38 | LTTNG_KERNEL_KRETPROBE = 3, |
| 39 | }; |
| 40 | |
| 41 | enum lttng_kernel_context_type { |
| 42 | LTTNG_KERNEL_CONTEXT_PID = 0, |
| 43 | LTTNG_KERNEL_CONTEXT_PERF_COUNTER = 1, |
| 44 | LTTNG_KERNEL_CONTEXT_COMM = 2, |
| 45 | LTTNG_KERNEL_CONTEXT_PRIO = 3, |
| 46 | LTTNG_KERNEL_CONTEXT_NICE = 4, |
| 47 | LTTNG_KERNEL_CONTEXT_VPID = 5, |
| 48 | LTTNG_KERNEL_CONTEXT_TID = 6, |
| 49 | LTTNG_KERNEL_CONTEXT_VTID = 7, |
| 50 | LTTNG_KERNEL_CONTEXT_PPID = 8, |
| 51 | LTTNG_KERNEL_CONTEXT_VPPID = 9, |
| 52 | }; |
| 53 | |
| 54 | /* Perf counter attributes */ |
| 55 | struct lttng_kernel_perf_counter_ctx { |
| 56 | uint32_t type; |
| 57 | uint64_t config; |
| 58 | char name[LTTNG_SYMBOL_NAME_LEN]; |
| 59 | }; |
| 60 | |
| 61 | /* Event/Channel context */ |
| 62 | struct lttng_kernel_context { |
| 63 | enum lttng_kernel_context_type ctx; |
| 64 | union { |
| 65 | struct lttng_kernel_perf_counter_ctx perf_counter; |
| 66 | } u; |
| 67 | }; |
| 68 | |
| 69 | struct lttng_kernel_kretprobe { |
| 70 | uint64_t addr; |
| 71 | |
| 72 | uint64_t offset; |
| 73 | char symbol_name[LTTNG_SYM_NAME_LEN]; |
| 74 | }; |
| 75 | |
| 76 | /* |
| 77 | * Either addr is used, or symbol_name and offset. |
| 78 | */ |
| 79 | struct lttng_kernel_kprobe { |
| 80 | uint64_t addr; |
| 81 | |
| 82 | uint64_t offset; |
| 83 | char symbol_name[LTTNG_SYM_NAME_LEN]; |
| 84 | }; |
| 85 | |
| 86 | /* Function tracer */ |
| 87 | struct lttng_kernel_function { |
| 88 | char symbol_name[LTTNG_SYM_NAME_LEN]; |
| 89 | }; |
| 90 | |
| 91 | struct lttng_kernel_event { |
| 92 | char name[LTTNG_SYM_NAME_LEN]; |
| 93 | enum lttng_kernel_instrumentation instrumentation; |
| 94 | /* Per instrumentation type configuration */ |
| 95 | union { |
| 96 | struct lttng_kernel_kretprobe kretprobe; |
| 97 | struct lttng_kernel_kprobe kprobe; |
| 98 | struct lttng_kernel_function ftrace; |
| 99 | } u; |
| 100 | }; |
| 101 | |
| 102 | struct lttng_kernel_tracer_version { |
| 103 | uint32_t version; |
| 104 | uint32_t patchlevel; |
| 105 | uint32_t sublevel; |
| 106 | }; |
| 107 | |
| 108 | enum lttng_kernel_calibrate_type { |
| 109 | LTTNG_KERNEL_CALIBRATE_KRETPROBE, |
| 110 | }; |
| 111 | |
| 112 | struct lttng_kernel_calibrate { |
| 113 | enum lttng_kernel_calibrate_type type; /* type (input) */ |
| 114 | }; |
| 115 | |
| 116 | #endif /* _LTTNG_KERNEL_H */ |