X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=probes%2Flttng-tracepoint-event-impl.h;h=53c929d86110b1295e58f179cde885cd181ed4f5;hb=ad5e2bb2;hp=ed7072cf19377973de61f38e12b0547a1bf13d36;hpb=1d84e8e7060f36b78cacc7a32d8e30522d62e90b;p=lttng-modules.git diff --git a/probes/lttng-tracepoint-event-impl.h b/probes/lttng-tracepoint-event-impl.h index ed7072cf..53c929d8 100644 --- a/probes/lttng-tracepoint-event-impl.h +++ b/probes/lttng-tracepoint-event-impl.h @@ -1,22 +1,9 @@ -/* +/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) + * * lttng-tracepoint-event-impl.h * * Copyright (C) 2009 Steven Rostedt * Copyright (C) 2009-2014 Mathieu Desnoyers - * - * 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 @@ -28,12 +15,14 @@ #include #include #include -#include /* for wrapper_vmalloc_sync_all() */ +#include /* for wrapper_vmalloc_sync_mappings() */ #include #include #include +#include #include #include +#include #define __LTTNG_NULL_STRING "(null)" @@ -222,6 +211,24 @@ void __event_template_proto___##_name(void); .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__ @@ -256,7 +263,7 @@ void __event_template_proto___##_name(void); }, #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) \ { \ .name = #_item, \ .type = \ @@ -266,7 +273,7 @@ void __event_template_proto___##_name(void); { \ .array = \ { \ - .elem_type = __type_integer(_type, 0, 0, 0, __BYTE_ORDER, 10, _encoding), \ + .elem_type = __type_integer(_type, 0, 0, 0, _byte_order, _base, _encoding), \ .length = _length, \ } \ } \ @@ -281,7 +288,7 @@ void __event_template_proto___##_name(void); .name = #_item, \ .type = \ { \ - .atype = atype_array, \ + .atype = atype_array_bitfield, \ .u = \ { \ .array = \ @@ -327,7 +334,7 @@ void __event_template_proto___##_name(void); .name = #_item, \ .type = \ { \ - .atype = atype_sequence, \ + .atype = atype_sequence_bitfield, \ .u = \ { \ .sequence = \ @@ -457,13 +464,13 @@ static void __event_probe__##_name(void *__data); __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, \ @@ -679,7 +686,7 @@ error: \ _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); \ @@ -691,7 +698,7 @@ error: \ #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, \ @@ -773,12 +780,12 @@ void __event_prepare_filter_stack__##_name(char *__stack_data, \ __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, \ @@ -887,7 +894,7 @@ static inline size_t __event_get_align__##_name(void *__tp_locvar) \ _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)); \ @@ -1112,7 +1119,7 @@ static void __event_probe__##_name(void *__data, _proto) \ 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)]; \ @@ -1121,18 +1128,37 @@ static void __event_probe__##_name(void *__data, _proto) \ 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(!LTTNG_READ_ONCE(__session->active))) \ + return; \ + if (unlikely(!LTTNG_READ_ONCE(__chan->enabled))) \ + return; \ + if (unlikely(!LTTNG_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; \ @@ -1186,7 +1212,7 @@ static void __event_probe__##_name(void *__data) \ 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)]; \ @@ -1195,18 +1221,37 @@ static void __event_probe__##_name(void *__data) \ 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(!LTTNG_READ_ONCE(__session->active))) \ return; \ - if (unlikely(!ACCESS_ONCE(__chan->enabled))) \ + if (unlikely(!LTTNG_READ_ONCE(__chan->enabled))) \ return; \ - if (unlikely(!ACCESS_ONCE(__event->enabled))) \ + if (unlikely(!LTTNG_READ_ONCE(__event->enabled))) \ return; \ - __lpf = lttng_rcu_dereference(__session->pid_tracker); \ - if (__lpf && likely(!lttng_pid_tracker_lookup(__lpf, current->pid))) \ + __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; \ + __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; \ @@ -1299,8 +1344,7 @@ static const struct lttng_event_desc __event_desc___##_map = { \ #define TP_ID1(_token, _system) _token##_system #define TP_ID(_token, _system) TP_ID1(_token, _system) -static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { -#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) +static const struct lttng_event_desc *TP_ID(__provider_event_desc___, TRACE_SYSTEM)[] = { }; #undef TP_ID1 @@ -1318,8 +1362,8 @@ static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { /* non-const because list head will be modified when registered. */ static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { .provider = __stringify(TRACE_SYSTEM), - .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), - .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), + .event_desc = TP_ID(__provider_event_desc___, TRACE_SYSTEM), + .nr_events = ARRAY_SIZE(TP_ID(__provider_event_desc___, TRACE_SYSTEM)), .head = { NULL, NULL }, .lazy_init_head = { NULL, NULL }, .lazy = 0, @@ -1346,7 +1390,7 @@ static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { #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)); }