-/*
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+ *
* lttng-tracepoint-event-impl.h
*
* Copyright (C) 2009 Steven Rostedt <rostedt@goodmis.org>
* Copyright (C) 2009-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/uaccess.h>
#include <probes/lttng.h>
#include <probes/lttng-types.h>
#include <probes/lttng-probe-user.h>
-#include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_all() */
-#include <wrapper/ringbuffer/frontend_types.h>
-#include <wrapper/ringbuffer/backend.h>
+#include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_mappings() */
+#include <ringbuffer/frontend_types.h>
+#include <ringbuffer/backend.h>
#include <wrapper/rcu.h>
+#include <wrapper/user_namespace.h>
#include <lttng-events.h>
#include <lttng-tracer-core.h>
+#include <lttng-tp-mempool.h>
#define __LTTNG_NULL_STRING "(null)"
.string = (_string), \
},
+/* Enumeration entry (automatic value; follows the rules of CTF) */
+#undef ctf_enum_auto
+#define ctf_enum_auto(_string) \
+ { \
+ .start = { \
+ .signedness = -1, \
+ .value = -1, \
+ }, \
+ .end = { \
+ .signedness = -1, \
+ .value = -1, \
+ }, \
+ .string = (_string), \
+ .options = { \
+ .is_auto = 1, \
+ } \
+ },
+
#undef TP_ENUM_VALUES
#define TP_ENUM_VALUES(...) \
__VA_ARGS__
#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \
{ \
.name = #_item, \
- .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none),\
+ .type = __type_integer(_type, 0, 0, -1, _byte_order, _base, none), \
.nowrite = _nowrite, \
.user = _user, \
+ .nofilter = 0, \
},
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
+#define _ctf_array_encoded(_type, _item, _src, _length, \
+ _encoding, _byte_order, _elem_type_base, _user, _nowrite) \
{ \
.name = #_item, \
.type = \
{ \
- .atype = atype_array, \
+ .atype = atype_array_nestable, \
.u = \
{ \
- .array = \
+ .array_nestable = \
{ \
- .elem_type = __type_integer(_type, 0, 0, 0, __BYTE_ORDER, 10, _encoding), \
+ .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \
+ __type_integer(_type, 0, 0, -1, _byte_order, _elem_type_base, _encoding)), \
.length = _length, \
+ .alignment = 0, \
} \
} \
}, \
.nowrite = _nowrite, \
.user = _user, \
+ .nofilter = 0, \
},
#undef _ctf_array_bitfield
.name = #_item, \
.type = \
{ \
- .atype = atype_array, \
+ .atype = atype_array_nestable, \
.u = \
{ \
- .array = \
+ .array_nestable = \
{ \
- .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \
+ .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \
+ __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \
.length = (_length) * sizeof(_type) * CHAR_BIT, \
- .elem_alignment = lttng_alignof(_type), \
+ .alignment = lttng_alignof(_type), \
} \
} \
}, \
.nowrite = _nowrite, \
.user = _user, \
+ .nofilter = 0, \
},
#undef _ctf_sequence_encoded
#define _ctf_sequence_encoded(_type, _item, _src, \
_length_type, _src_length, _encoding, \
- _byte_order, _base, _user, _nowrite) \
+ _byte_order, _elem_type_base, _user, _nowrite) \
+ { \
+ .name = "_" #_item "_length", \
+ .type = __type_integer(_length_type, 0, 0, -1, __BYTE_ORDER, 10, none), \
+ .nowrite = _nowrite, \
+ .nofilter = 1, \
+ }, \
{ \
.name = #_item, \
.type = \
{ \
- .atype = atype_sequence, \
+ .atype = atype_sequence_nestable, \
.u = \
{ \
- .sequence = \
+ .sequence_nestable = \
{ \
- .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \
- .elem_type = __type_integer(_type, 0, 0, -1, _byte_order, _base, _encoding), \
+ .length_name = "_" #_item "_length", \
+ .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \
+ __type_integer(_type, 0, 0, -1, _byte_order, _elem_type_base, _encoding)), \
+ .alignment = 0, \
}, \
}, \
}, \
.nowrite = _nowrite, \
.user = _user, \
+ .nofilter = 0, \
},
#undef _ctf_sequence_bitfield
#define _ctf_sequence_bitfield(_type, _item, _src, \
_length_type, _src_length, \
_user, _nowrite) \
+ { \
+ .name = "_" #_item "_length", \
+ .type = __type_integer(_length_type, 0, 0, -1, __BYTE_ORDER, 10, none), \
+ .nowrite = _nowrite, \
+ .nofilter = 1, \
+ }, \
{ \
.name = #_item, \
.type = \
{ \
- .atype = atype_sequence, \
+ .atype = atype_sequence_nestable, \
.u = \
{ \
- .sequence = \
+ .sequence_nestable = \
{ \
- .length_type = __type_integer(_length_type, 0, 0, 0, __BYTE_ORDER, 10, none), \
- .elem_type = __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none), \
- .elem_alignment = lttng_alignof(_type), \
+ .length_name = "_" #_item "_length", \
+ .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \
+ __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \
+ .alignment = lttng_alignof(_type), \
}, \
}, \
}, \
.nowrite = _nowrite, \
.user = _user, \
+ .nofilter = 0, \
},
#undef _ctf_string
.atype = atype_string, \
.u = \
{ \
- .basic = { .string = { .encoding = lttng_encode_UTF8 } } \
+ .string = { .encoding = lttng_encode_UTF8 }, \
}, \
}, \
.nowrite = _nowrite, \
.user = _user, \
+ .nofilter = 0, \
},
#undef _ctf_enum
{ \
.name = #_item, \
.type = { \
- .atype = atype_enum, \
+ .atype = atype_enum_nestable, \
.u = { \
- .basic = { \
- .enumeration = { \
- .desc = &__enum_##_name, \
- .container_type = { \
- .size = sizeof(_type) * CHAR_BIT, \
- .alignment = lttng_alignof(_type) * CHAR_BIT, \
- .signedness = lttng_is_signed_type(_type), \
- .reverse_byte_order = 0, \
- .base = 10, \
- .encoding = lttng_encode_none, \
- }, \
- }, \
- }, \
+ .enum_nestable = { \
+ .desc = &__enum_##_name, \
+ .container_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \
+ __type_integer(_type, 0, 0, -1, __BYTE_ORDER, 10, none)), \
+ }, \
}, \
}, \
.nowrite = _nowrite, \
.user = _user, \
+ .nofilter = 0, \
},
#undef ctf_custom_field
#define ctf_custom_field(_type, _item, _code) \
{ \
.name = #_item, \
- .type = { _type }, \
+ .type = _type, \
.nowrite = 0, \
.user = 0, \
+ .nofilter = 1, \
},
#undef ctf_custom_type
__event_len += sizeof(_type);
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \
__event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
__event_len += sizeof(_type) * (_length);
#undef _ctf_array_bitfield
#define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \
- _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite)
+ _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite)
#undef _ctf_sequence_encoded
#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
_ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite)
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \
{ \
unsigned long __ctf_tmp_ulong = (unsigned long) (_length); \
const void *__ctf_tmp_ptr = (_src); \
#undef _ctf_array_bitfield
#define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \
- _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite)
+ _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite)
#undef _ctf_sequence_encoded
#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
__event_align = max_t(size_t, __event_align, lttng_alignof(_type));
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \
__event_align = max_t(size_t, __event_align, lttng_alignof(_type));
#undef _ctf_array_bitfield
#define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \
- _ctf_array_encoded(_type, _item, _src, _length, none, _user, _nowrite)
+ _ctf_array_encoded(_type, _item, _src, _length, none, __LITTLE_ENDIAN, 0, _user, _nowrite)
#undef _ctf_sequence_encoded
#define _ctf_sequence_encoded(_type, _item, _src, _length_type, \
_ctf_integer_ext_isuser##_user(_type, _item, _user_src, _byte_order, _base, _nowrite)
#undef _ctf_array_encoded
-#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _user, _nowrite) \
+#define _ctf_array_encoded(_type, _item, _src, _length, _encoding, _byte_order, _base, _user, _nowrite) \
lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type)); \
if (_user) { \
__chan->ops->event_write_from_user(&__ctx, _src, sizeof(_type) * (_length)); \
struct lib_ring_buffer_ctx __ctx; \
ssize_t __event_len; \
size_t __event_align; \
- size_t __orig_dynamic_len_offset, __dynamic_len_idx; \
+ size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \
union { \
size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \
char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \
struct probe_local_vars __tp_locvar; \
struct probe_local_vars *tp_locvar __attribute__((unused)) = \
&__tp_locvar; \
- struct lttng_pid_tracker *__lpf; \
+ struct lttng_id_tracker_rcu *__lf; \
\
if (!_TP_SESSION_CHECK(session, __session)) \
return; \
- if (unlikely(!ACCESS_ONCE(__session->active))) \
+ if (unlikely(!READ_ONCE(__session->active))) \
+ return; \
+ if (unlikely(!READ_ONCE(__chan->enabled))) \
+ return; \
+ if (unlikely(!READ_ONCE(__event->enabled))) \
+ return; \
+ __lf = lttng_rcu_dereference(__session->pid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \
return; \
- if (unlikely(!ACCESS_ONCE(__chan->enabled))) \
+ __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \
return; \
- if (unlikely(!ACCESS_ONCE(__event->enabled))) \
+ __lf = lttng_rcu_dereference(__session->uid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, \
+ lttng_current_uid()))) \
return; \
- __lpf = lttng_rcu_dereference(__session->pid_tracker); \
- if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->pid))) \
+ __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, \
+ lttng_current_vuid()))) \
+ return; \
+ __lf = lttng_rcu_dereference(__session->gid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, \
+ lttng_current_gid()))) \
+ return; \
+ __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, \
+ lttng_current_vgid()))) \
return; \
__orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \
__dynamic_len_idx = __orig_dynamic_len_offset; \
tp_locvar, _args); \
lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \
if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \
- __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \
+ __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) { \
__filter_record = 1; \
+ break; \
+ } \
} \
if (likely(!__filter_record)) \
goto __post; \
struct lib_ring_buffer_ctx __ctx; \
ssize_t __event_len; \
size_t __event_align; \
- size_t __orig_dynamic_len_offset, __dynamic_len_idx; \
+ size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \
union { \
size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \
char __filter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \
struct probe_local_vars __tp_locvar; \
struct probe_local_vars *tp_locvar __attribute__((unused)) = \
&__tp_locvar; \
- struct lttng_pid_tracker *__lpf; \
+ struct lttng_id_tracker_rcu *__lf; \
\
if (!_TP_SESSION_CHECK(session, __session)) \
return; \
- if (unlikely(!ACCESS_ONCE(__session->active))) \
+ if (unlikely(!READ_ONCE(__session->active))) \
+ return; \
+ if (unlikely(!READ_ONCE(__chan->enabled))) \
+ return; \
+ if (unlikely(!READ_ONCE(__event->enabled))) \
+ return; \
+ __lf = lttng_rcu_dereference(__session->pid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, current->tgid))) \
+ return; \
+ __lf = lttng_rcu_dereference(__session->vpid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, task_tgid_vnr(current)))) \
+ return; \
+ __lf = lttng_rcu_dereference(__session->uid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, \
+ lttng_current_uid()))) \
return; \
- if (unlikely(!ACCESS_ONCE(__chan->enabled))) \
+ __lf = lttng_rcu_dereference(__session->vuid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, \
+ lttng_current_vuid()))) \
return; \
- if (unlikely(!ACCESS_ONCE(__event->enabled))) \
+ __lf = lttng_rcu_dereference(__session->gid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, \
+ lttng_current_gid()))) \
return; \
- __lpf = lttng_rcu_dereference(__session->pid_tracker); \
- if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->pid))) \
+ __lf = lttng_rcu_dereference(__session->vgid_tracker.p); \
+ if (__lf && likely(!lttng_id_tracker_lookup(__lf, \
+ lttng_current_vgid()))) \
return; \
__orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \
__dynamic_len_idx = __orig_dynamic_len_offset; \
tp_locvar); \
lttng_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \
if (unlikely(bc_runtime->filter(bc_runtime, &__lttng_probe_ctx, \
- __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \
+ __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) { \
__filter_record = 1; \
+ break; \
+ } \
} \
if (likely(!__filter_record)) \
goto __post; \
#ifndef TP_MODULE_NOINIT
static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void)
{
- wrapper_vmalloc_sync_all();
+ wrapper_vmalloc_sync_mappings();
return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM));
}
projects / lttng-modules.git / blobdiff