X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Ftracepoint-event-impl.h;h=b75a791ea4e3e88e17921c83fab2ffbb08adf49d;hb=8a57ec025ffbe56153748fd69b60118862707182;hp=f488586a3a851791e6f2a64d6380a54d91047d37;hpb=d96a4a7a78319be3386b57d9068817e9ffac2a24;p=lttng-modules.git diff --git a/include/lttng/tracepoint-event-impl.h b/include/lttng/tracepoint-event-impl.h index f488586a..b75a791e 100644 --- a/include/lttng/tracepoint-event-impl.h +++ b/include/lttng/tracepoint-event-impl.h @@ -172,41 +172,6 @@ void __event_template_proto___##_name(void); #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) -/* - * Stage 1.2 of the trace event_notifier. - * - * Create dummy trace prototypes for each event class, and for each used - * template. This will allow checking whether the prototypes from the - * class and the instance using the class actually match. - */ - -#include /* Reset all macros within TRACE_EVENT */ - -#undef TP_PROTO -#define TP_PROTO(...) __VA_ARGS__ - -#undef TP_ARGS -#define TP_ARGS(...) __VA_ARGS__ - -#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP -#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(_template, _name, _map, _proto, _args) \ -void __event_notifier_template_proto___##_template(_proto); - -#undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS -#define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ -void __event_notifier_template_proto___##_template(void); - -#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE -#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ -void __event_notifier_template_proto___##_name(_proto); - -#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS -#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ -void __event_notifier_template_proto___##_name(void); - -#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) - - /* * Stage 1.2 of tracepoint event generation * @@ -217,54 +182,17 @@ void __event_notifier_template_proto___##_name(void); /* Enumeration entry (single value) */ #undef ctf_enum_value #define ctf_enum_value(_string, _value) \ - { \ - .start = { \ - .signedness = lttng_is_signed_type(__typeof__(_value)), \ - .value = lttng_is_signed_type(__typeof__(_value)) ? \ - (long long) (_value) : (_value), \ - }, \ - .end = { \ - .signedness = lttng_is_signed_type(__typeof__(_value)), \ - .value = lttng_is_signed_type(__typeof__(_value)) ? \ - (long long) (_value) : (_value), \ - }, \ - .string = (_string), \ - }, + lttng_kernel_static_enum_entry_value(_string, _value) /* Enumeration entry (range) */ #undef ctf_enum_range #define ctf_enum_range(_string, _range_start, _range_end) \ - { \ - .start = { \ - .signedness = lttng_is_signed_type(__typeof__(_range_start)), \ - .value = lttng_is_signed_type(__typeof__(_range_start)) ? \ - (long long) (_range_start) : (_range_start), \ - }, \ - .end = { \ - .signedness = lttng_is_signed_type(__typeof__(_range_end)), \ - .value = lttng_is_signed_type(__typeof__(_range_end)) ? \ - (long long) (_range_end) : (_range_end), \ - }, \ - .string = (_string), \ - }, + lttng_kernel_static_enum_entry_range(_string, _range_start, _range_end) /* 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, \ - } \ - }, +#define ctf_enum_auto(_string) \ + lttng_kernel_static_enum_entry_auto(_string) #undef TP_ENUM_VALUES #define TP_ENUM_VALUES(...) \ @@ -272,7 +200,7 @@ void __event_notifier_template_proto___##_name(void); #undef LTTNG_TRACEPOINT_ENUM #define LTTNG_TRACEPOINT_ENUM(_name, _values) \ - const struct lttng_kernel_enum_entry __enum_values__##_name[] = { \ + static const struct lttng_kernel_enum_entry *__enum_values__##_name[] = { \ _values \ }; @@ -291,170 +219,77 @@ void __event_notifier_template_proto___##_name(void); #include #undef _ctf_integer_ext -#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), \ - .nowrite = _nowrite, \ - .user = _user, \ - .nofilter = 0, \ - }, +#define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _user, _nowrite) \ + lttng_kernel_static_event_field(#_item, \ + lttng_kernel_static_type_integer_from_type(_type, _byte_order, _base), \ + _nowrite, _user, 0), #undef _ctf_array_encoded #define _ctf_array_encoded(_type, _item, _src, _length, \ _encoding, _byte_order, _elem_type_base, _user, _nowrite) \ - { \ - .name = #_item, \ - .type = \ - { \ - .type = lttng_kernel_type_array_nestable, \ - .u = \ - { \ - .array_nestable = \ - { \ - .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, \ - }, + lttng_kernel_static_event_field(#_item, \ + lttng_kernel_static_type_array(_length, \ + lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ + 0, \ + _encoding), \ + _nowrite, _user, 0), #undef _ctf_array_bitfield #define _ctf_array_bitfield(_type, _item, _src, _length, _user, _nowrite) \ - { \ - .name = #_item, \ - .type = \ - { \ - .type = lttng_kernel_type_array_nestable, \ - .u = \ - { \ - .array_nestable = \ - { \ - .elem_type = __LTTNG_COMPOUND_LITERAL(struct lttng_type, \ - __type_integer(_type, 1, 1, 0, __LITTLE_ENDIAN, 10, none)), \ - .length = (_length) * sizeof(_type) * CHAR_BIT, \ - .alignment = lttng_alignof(_type), \ - } \ - } \ - }, \ - .nowrite = _nowrite, \ - .user = _user, \ - .nofilter = 0, \ - }, - + lttng_kernel_static_event_field(#_item, \ + lttng_kernel_static_type_array((_length) * sizeof(_type) * CHAR_BIT, \ + lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ + lttng_alignof(_type), \ + none), \ + _nowrite, _user, 0), #undef _ctf_sequence_encoded #define _ctf_sequence_encoded(_type, _item, _src, \ _length_type, _src_length, _encoding, \ _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 = \ - { \ - .type = lttng_kernel_type_sequence_nestable, \ - .u = \ - { \ - .sequence_nestable = \ - { \ - .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, \ - }, + lttng_kernel_static_event_field("_" #_item "_length", \ + lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ + _nowrite, 0, 1), \ + lttng_kernel_static_event_field(#_item, \ + lttng_kernel_static_type_sequence(NULL, /* Use previous field. */ \ + lttng_kernel_static_type_integer_from_type(_type, _byte_order, _elem_type_base), \ + 0, \ + _encoding), \ + _nowrite, _user, 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 = \ - { \ - .type = lttng_kernel_type_sequence_nestable, \ - .u = \ - { \ - .sequence_nestable = \ - { \ - .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, \ - }, + lttng_kernel_static_event_field("_" #_item "_length", \ + lttng_kernel_static_type_integer_from_type(_length_type, __BYTE_ORDER, 10), \ + _nowrite, 0, 1), \ + lttng_kernel_static_event_field(#_item, \ + lttng_kernel_static_type_sequence(NULL, /* Use previous field. */ \ + lttng_kernel_static_type_integer(1, 1, 0, __LITTLE_ENDIAN, 10), \ + lttng_alignof(_type), \ + none), \ + _nowrite, _user, 0), #undef _ctf_string #define _ctf_string(_item, _src, _user, _nowrite) \ - { \ - .name = #_item, \ - .type = \ - { \ - .type = lttng_kernel_type_string, \ - .u = \ - { \ - .string = { .encoding = lttng_kernel_string_encoding_UTF8 }, \ - }, \ - }, \ - .nowrite = _nowrite, \ - .user = _user, \ - .nofilter = 0, \ - }, + lttng_kernel_static_event_field(#_item, \ + lttng_kernel_static_type_string(UTF8), \ + _nowrite, _user, 0), + +#undef _ctf_unused +#define _ctf_unused(_src) #undef _ctf_enum #define _ctf_enum(_name, _type, _item, _src, _user, _nowrite) \ - { \ - .name = #_item, \ - .type = { \ - .type = lttng_kernel_type_enum_nestable, \ - .u = { \ - .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, \ - }, + lttng_kernel_static_event_field(#_item, \ + lttng_kernel_static_type_enum(&__enum_##_name, \ + lttng_kernel_static_type_integer_from_type(_type, __BYTE_ORDER, 10)), \ + _nowrite, _user, 0), #undef ctf_custom_field #define ctf_custom_field(_type, _item, _code) \ - { \ - .name = #_item, \ - .type = _type, \ - .nowrite = 0, \ - .user = 0, \ - .nofilter = 1, \ - }, + lttng_kernel_static_event_field(#_item, PARAMS(_type), 0, 0, 1), #undef ctf_custom_type #define ctf_custom_type(...) __VA_ARGS__ @@ -464,7 +299,7 @@ void __event_notifier_template_proto___##_name(void); #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ - static const struct lttng_event_field __event_fields___##_name[] = { \ + static const struct lttng_kernel_event_field *__event_fields___##_name[] = { \ _fields \ }; @@ -480,7 +315,9 @@ void __event_notifier_template_proto___##_name(void); .nr_entries = ARRAY_SIZE(__enum_values__##_name), \ }; +#define LTTNG_CREATE_FIELD_METADATA #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) +#undef LTTNG_CREATE_FIELD_METADATA /* * Stage 3 of the trace events. @@ -504,28 +341,6 @@ static void __event_probe__##_name(void *__data); #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) -/* - * Stage 3.1 of the trace event_notifiers. - * - * Create event_notifier probe callback prototypes. - */ - -/* Reset all macros within TRACEPOINT_EVENT */ -#include - -#undef TP_PROTO -#define TP_PROTO(...) __VA_ARGS__ - -#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE -#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ -static void __event_notifier_probe__##_name(void *__data, _proto); - -#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS -#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ -static void __event_notifier_probe__##_name(void *__data); - -#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) - /* * Stage 4 of the trace events. * @@ -1182,348 +997,151 @@ static inline size_t __event_get_align__##_name(void *__tp_locvar) \ * 2*sizeof(unsigned long) for all supported architectures. * Perform UNION (||) of filter runtime list. */ +#undef _LTTNG_TRACEPOINT_EVENT_CLASS_CODE +#define _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _data_proto, _locvar_args, _locvar, _code_pre, _fields, _code_post) \ +static void __event_probe__##_name(_data_proto) \ +{ \ + struct probe_local_vars { _locvar }; \ + struct lttng_kernel_event_common *__event = __data; \ + struct lttng_kernel_probe_ctx __lttng_probe_ctx = { \ + .event = __event, \ + .interruptible = !irqs_disabled(), \ + }; \ + union { \ + size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ + char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ + } __stackvar; \ + size_t __orig_dynamic_len_offset, __dynamic_len_idx __attribute__((unused)); \ + struct probe_local_vars __tp_locvar; \ + struct probe_local_vars *tp_locvar __attribute__((unused)) = \ + &__tp_locvar; \ + bool __interpreter_stack_prepared = false; \ + \ + switch (__event->type) { \ + case LTTNG_KERNEL_EVENT_TYPE_RECORDER: \ + { \ + struct lttng_kernel_event_recorder *__event_recorder = \ + container_of(__event, struct lttng_kernel_event_recorder, parent); \ + struct lttng_channel *__chan = __event_recorder->chan; \ + struct lttng_session *__session = __chan->session; \ + struct lttng_id_tracker_rcu *__lf; \ + \ + if (!_TP_SESSION_CHECK(session, __session)) \ + return; \ + if (unlikely(!LTTNG_READ_ONCE(__session->active))) \ + return; \ + if (unlikely(!LTTNG_READ_ONCE(__chan->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; \ + __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; \ + break; \ + } \ + case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER: \ + break; \ + default: \ + WARN_ON_ONCE(1); \ + } \ + if (unlikely(!READ_ONCE(__event->enabled))) \ + return; \ + __orig_dynamic_len_offset = this_cpu_ptr(<tng_dynamic_len_stack)->offset; \ + __dynamic_len_idx = __orig_dynamic_len_offset; \ + _code_pre \ + if (unlikely(READ_ONCE(__event->eval_filter))) { \ + __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ + _locvar_args); \ + __interpreter_stack_prepared = true; \ + if (likely(__event->run_filter(__event, \ + __stackvar.__interpreter_stack_data, &__lttng_probe_ctx, NULL) != LTTNG_KERNEL_EVENT_FILTER_ACCEPT)) \ + goto __post; \ + } \ + switch (__event->type) { \ + case LTTNG_KERNEL_EVENT_TYPE_RECORDER: \ + { \ + struct lttng_kernel_event_recorder *__event_recorder = \ + container_of(__event, struct lttng_kernel_event_recorder, parent); \ + struct lttng_channel *__chan = __event_recorder->chan; \ + struct lttng_kernel_ring_buffer_ctx __ctx; \ + ssize_t __event_len; \ + size_t __event_align; \ + int __ret; \ + \ + __event_len = __event_get_size__##_name(_locvar_args); \ + if (unlikely(__event_len < 0)) { \ + lib_ring_buffer_lost_event_too_big(__chan->chan); \ + goto __post; \ + } \ + __event_align = __event_get_align__##_name(_locvar_args); \ + lib_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, \ + __event_align, &__lttng_probe_ctx); \ + __ret = __chan->ops->event_reserve(&__ctx); \ + if (__ret < 0) \ + goto __post; \ + _fields \ + __chan->ops->event_commit(&__ctx); \ + break; \ + } \ + case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER: \ + { \ + struct lttng_kernel_event_notifier *__event_notifier = \ + container_of(__event, struct lttng_kernel_event_notifier, parent); \ + struct lttng_kernel_notification_ctx __notif_ctx; \ + \ + __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ + if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ + __event_prepare_interpreter_stack__##_name( \ + __stackvar.__interpreter_stack_data, \ + _locvar_args); \ + \ + __event_notifier->notification_send(__event_notifier, \ + __stackvar.__interpreter_stack_data, \ + &__lttng_probe_ctx, \ + &__notif_ctx); \ + break; \ + } \ + default: \ + WARN_ON_ONCE(1); \ + } \ +__post: \ + _code_post \ + barrier(); /* use before un-reserve. */ \ + this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ + return; \ +} + #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ -static void __event_probe__##_name(void *__data, _proto) \ -{ \ - struct probe_local_vars { _locvar }; \ - struct lttng_event *__event = __data; \ - struct lttng_probe_ctx __lttng_probe_ctx = { \ - .event = __event, \ - .event_notifier = NULL, \ - .interruptible = !irqs_disabled(), \ - }; \ - struct lttng_channel *__chan = __event->chan; \ - struct lttng_session *__session = __chan->session; \ - struct lib_ring_buffer_ctx __ctx; \ - ssize_t __event_len; \ - size_t __event_align; \ - 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)]; \ - } __stackvar; \ - int __ret; \ - struct probe_local_vars __tp_locvar; \ - struct probe_local_vars *tp_locvar __attribute__((unused)) = \ - &__tp_locvar; \ - struct lttng_id_tracker_rcu *__lf; \ - \ - if (!_TP_SESSION_CHECK(session, __session)) \ - return; \ - 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; \ - __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; \ - _code_pre \ - if (unlikely(!list_empty(&__event->filter_bytecode_runtime_head))) { \ - struct lttng_bytecode_runtime *bc_runtime; \ - int __filter_record = __event->has_enablers_without_bytecode; \ - \ - __event_prepare_interpreter_stack__##_name(__stackvar.__filter_stack_data, \ - tp_locvar, _args); \ - lttng_list_for_each_entry_rcu(bc_runtime, &__event->filter_bytecode_runtime_head, node) { \ - if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ - __stackvar.__filter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) { \ - __filter_record = 1; \ - break; \ - } \ - } \ - if (likely(!__filter_record)) \ - goto __post; \ - } \ - __event_len = __event_get_size__##_name(tp_locvar, _args); \ - if (unlikely(__event_len < 0)) { \ - lib_ring_buffer_lost_event_too_big(__chan->chan); \ - goto __post; \ - } \ - __event_align = __event_get_align__##_name(tp_locvar, _args); \ - lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ - __event_align, -1); \ - __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ - if (__ret < 0) \ - goto __post; \ - _fields \ - __chan->ops->event_commit(&__ctx); \ -__post: \ - _code_post \ - barrier(); /* use before un-reserve. */ \ - this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ - return; \ -} + _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(void *__data, _proto), PARAMS(tp_locvar, _args), \ + PARAMS(_locvar), PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) #undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS #define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ -static void __event_probe__##_name(void *__data) \ -{ \ - struct probe_local_vars { _locvar }; \ - struct lttng_event *__event = __data; \ - struct lttng_probe_ctx __lttng_probe_ctx = { \ - .event = __event, \ - .event_notifier = NULL, \ - .interruptible = !irqs_disabled(), \ - }; \ - struct lttng_channel *__chan = __event->chan; \ - struct lttng_session *__session = __chan->session; \ - struct lib_ring_buffer_ctx __ctx; \ - ssize_t __event_len; \ - size_t __event_align; \ - 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)]; \ - } __stackvar; \ - int __ret; \ - struct probe_local_vars __tp_locvar; \ - struct probe_local_vars *tp_locvar __attribute__((unused)) = \ - &__tp_locvar; \ - struct lttng_id_tracker_rcu *__lf; \ - \ - if (!_TP_SESSION_CHECK(session, __session)) \ - return; \ - 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; \ - __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; \ - _code_pre \ - if (unlikely(!list_empty(&__event->filter_bytecode_runtime_head))) { \ - struct lttng_bytecode_runtime *bc_runtime; \ - int __filter_record = __event->has_enablers_without_bytecode; \ - \ - __event_prepare_interpreter_stack__##_name(__stackvar.__filter_stack_data, \ - tp_locvar); \ - lttng_list_for_each_entry_rcu(bc_runtime, &__event->filter_bytecode_runtime_head, node) { \ - if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ - __stackvar.__filter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) { \ - __filter_record = 1; \ - break; \ - } \ - } \ - if (likely(!__filter_record)) \ - goto __post; \ - } \ - __event_len = __event_get_size__##_name(tp_locvar); \ - if (unlikely(__event_len < 0)) { \ - lib_ring_buffer_lost_event_too_big(__chan->chan); \ - goto __post; \ - } \ - __event_align = __event_get_align__##_name(tp_locvar); \ - lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_probe_ctx, __event_len, \ - __event_align, -1); \ - __ret = __chan->ops->event_reserve(&__ctx, __event->id); \ - if (__ret < 0) \ - goto __post; \ - _fields \ - __chan->ops->event_commit(&__ctx); \ -__post: \ - _code_post \ - barrier(); /* use before un-reserve. */ \ - this_cpu_ptr(<tng_dynamic_len_stack)->offset = __orig_dynamic_len_offset; \ - return; \ -} + _LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, PARAMS(void *__data), PARAMS(tp_locvar), PARAMS(_locvar), \ + PARAMS(_code_pre), PARAMS(_fields), PARAMS(_code_post)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) #undef __get_dynamic_len -/* - * Stage 6.1 of tracepoint generation: generate event notifier probes - * - * Create the probe function. This function evaluates the filter bytecode and - * queue a notification to be sent to userspace. - */ - -#include /* Reset all macros within LTTNG_TRACEPOINT_EVENT */ - -#undef TP_PROTO -#define TP_PROTO(...) __VA_ARGS__ - -#undef TP_ARGS -#define TP_ARGS(...) __VA_ARGS__ - -#undef TP_FIELDS -#define TP_FIELDS(...) __VA_ARGS__ - -#undef TP_locvar -#define TP_locvar(...) __VA_ARGS__ - -#undef TP_code_pre -#define TP_code_pre(...) __VA_ARGS__ - -#undef TP_code_post -#define TP_code_post(...) __VA_ARGS__ - -/* - * Using twice size for filter stack data to hold size and pointer for - * each field (worse case). For integers, max size required is 64-bit. - * Same for double-precision floats. Those fit within - * 2*sizeof(unsigned long) for all supported architectures. - * Perform UNION (||) of filter runtime list. - */ -#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE -#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE(_name, _proto, _args, _locvar, _code_pre, _fields, _code_post) \ -static void __event_notifier_probe__##_name(void *__data, _proto) \ -{ \ - struct probe_local_vars { _locvar }; \ - struct lttng_event_notifier *__event_notifier = __data; \ - struct lttng_probe_ctx __lttng_probe_ctx = { \ - .event = NULL, \ - .event_notifier = __event_notifier, \ - .interruptible = !irqs_disabled(), \ - }; \ - union { \ - size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ - char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ - } __stackvar; \ - struct probe_local_vars __tp_locvar; \ - struct probe_local_vars *tp_locvar __attribute__((unused)) = \ - &__tp_locvar; \ - struct lttng_kernel_notifier_ctx __notif_ctx; \ - bool __interpreter_stack_prepared = false; \ - \ - if (unlikely(!READ_ONCE(__event_notifier->enabled))) \ - return; \ - _code_pre \ - if (unlikely(!list_empty(&__event_notifier->filter_bytecode_runtime_head))) { \ - struct lttng_bytecode_runtime *bc_runtime; \ - int __filter_record = __event_notifier->has_enablers_without_bytecode; \ - \ - __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ - tp_locvar, _args); \ - __interpreter_stack_prepared = true; \ - lttng_list_for_each_entry_rcu(bc_runtime, &__event_notifier->filter_bytecode_runtime_head, node) { \ - if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ - __stackvar.__interpreter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) \ - __filter_record = 1; \ - } \ - if (likely(!__filter_record)) \ - goto __post; \ - } \ - \ - __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ - if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ - __event_prepare_interpreter_stack__##_name( \ - __stackvar.__interpreter_stack_data, \ - tp_locvar, _args); \ - \ - __event_notifier->send_notification(__event_notifier, \ - &__lttng_probe_ctx, \ - __stackvar.__interpreter_stack_data, \ - &__notif_ctx); \ - \ -__post: \ - _code_post \ - return; \ -} - -#undef LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS -#define LTTNG_TRACEPOINT_EVENT_CLASS_CODE_NOARGS(_name, _locvar, _code_pre, _fields, _code_post) \ -static void __event_notifier_probe__##_name(void *__data) \ -{ \ - struct probe_local_vars { _locvar }; \ - struct lttng_event_notifier *__event_notifier = __data; \ - struct lttng_probe_ctx __lttng_probe_ctx = { \ - .event = NULL, \ - .event_notifier = __event_notifier, \ - .interruptible = !irqs_disabled(), \ - }; \ - union { \ - size_t __dynamic_len_removed[ARRAY_SIZE(__event_fields___##_name)]; \ - char __interpreter_stack_data[2 * sizeof(unsigned long) * ARRAY_SIZE(__event_fields___##_name)]; \ - } __stackvar; \ - struct probe_local_vars __tp_locvar; \ - struct probe_local_vars *tp_locvar __attribute__((unused)) = \ - &__tp_locvar; \ - struct lttng_kernel_notifier_ctx __notif_ctx; \ - bool __interpreter_stack_prepared = false; \ - \ - if (unlikely(!READ_ONCE(__event_notifier->enabled))) \ - return; \ - _code_pre \ - if (unlikely(!list_empty(&__event_notifier->filter_bytecode_runtime_head))) { \ - struct lttng_bytecode_runtime *bc_runtime; \ - int __filter_record = __event_notifier->has_enablers_without_bytecode; \ - \ - __event_prepare_interpreter_stack__##_name(__stackvar.__interpreter_stack_data, \ - tp_locvar); \ - __interpreter_stack_prepared = true; \ - lttng_list_for_each_entry_rcu(bc_runtime, &__event_notifier->filter_bytecode_runtime_head, node) { \ - if (unlikely(bc_runtime->interpreter_funcs.filter(bc_runtime, &__lttng_probe_ctx, \ - __stackvar.__interpreter_stack_data) & LTTNG_INTERPRETER_RECORD_FLAG)) \ - __filter_record = 1; \ - } \ - if (likely(!__filter_record)) \ - goto __post; \ - } \ - \ - __notif_ctx.eval_capture = LTTNG_READ_ONCE(__event_notifier->eval_capture); \ - if (unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \ - __event_prepare_interpreter_stack__##_name( \ - __stackvar.__interpreter_stack_data, \ - tp_locvar); \ - \ - __event_notifier->send_notification(__event_notifier, \ - &__lttng_probe_ctx, \ - __stackvar.__interpreter_stack_data, \ - &__notif_ctx); \ -__post: \ - _code_post \ - return; \ -} - -#include TRACE_INCLUDE(TRACE_INCLUDE_FILE) /* * Stage 7 of the trace events. * @@ -1538,20 +1156,15 @@ __post: \ #define TP_PROBE_CB(_template) &__event_probe__##_template #endif -#ifndef TP_EVENT_NOTIFIER_PROBE_CB -#define TP_EVENT_NOTIFIER_PROBE_CB(_template) &__event_notifier_probe__##_template -#endif - #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS #define LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP_NOARGS(_template, _name, _map) \ -static const struct lttng_event_desc __event_desc___##_map = { \ +static const struct lttng_kernel_event_desc __event_desc___##_map = { \ + .event_name = #_map, \ + .event_kname = #_name, \ + .probe_callback = (void (*)(void)) TP_PROBE_CB(_template), \ .fields = __event_fields___##_template, \ - .name = #_map, \ - .kname = #_name, \ - .probe_callback = (void *) TP_PROBE_CB(_template), \ .nr_fields = ARRAY_SIZE(__event_fields___##_template), \ .owner = THIS_MODULE, \ - .event_notifier_callback = (void *) TP_EVENT_NOTIFIER_PROBE_CB(_template), \ }; #undef LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP @@ -1579,7 +1192,7 @@ 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)[] = { +static const struct lttng_kernel_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) }; @@ -1596,8 +1209,8 @@ static const struct lttng_event_desc *TP_ID(__event_desc___, TRACE_SYSTEM)[] = { #define TP_ID(_token, _system) TP_ID1(_token, _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), +static __used struct lttng_kernel_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { + .provider_name = __stringify(TRACE_SYSTEM), .event_desc = TP_ID(__event_desc___, TRACE_SYSTEM), .nr_events = ARRAY_SIZE(TP_ID(__event_desc___, TRACE_SYSTEM)), .head = { NULL, NULL }, @@ -1627,12 +1240,12 @@ static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = { static int TP_ID(__lttng_events_init__, TRACE_SYSTEM)(void) { wrapper_vmalloc_sync_mappings(); - return lttng_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); + return lttng_kernel_probe_register(&TP_ID(__probe_desc___, TRACE_SYSTEM)); } static void TP_ID(__lttng_events_exit__, TRACE_SYSTEM)(void) { - lttng_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); + lttng_kernel_probe_unregister(&TP_ID(__probe_desc___, TRACE_SYSTEM)); } #ifndef TP_MODULE_NOAUTOLOAD