X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fevents.h;h=9cbc3b999d18a89edb1338608f3d3ded9d4c076d;hb=12bb2edb6ed3e96d3299a979e49b828f2b17dcb2;hp=5393f196f18d63701fa72d46f7443a29d4bf1b88;hpb=0b365677b4b159fa9aa2b98eb19f10f4a762fbe8;p=lttng-modules.git diff --git a/include/lttng/events.h b/include/lttng/events.h index 5393f196..9cbc3b99 100644 --- a/include/lttng/events.h +++ b/include/lttng/events.h @@ -10,7 +10,7 @@ #ifndef _LTTNG_EVENTS_H #define _LTTNG_EVENTS_H -#include +#include #include #include #include @@ -23,7 +23,7 @@ #include #include -#define lttng_is_signed_type(type) (((type)(-1)) < 0) +#define lttng_is_signed_type(type) (((type) -1) < (type) 1) struct lttng_channel; struct lttng_session; @@ -35,15 +35,15 @@ struct lib_ring_buffer_config; /* Type description */ -enum abstract_types { - atype_integer, - atype_string, - atype_enum_nestable, - atype_array_nestable, - atype_sequence_nestable, - atype_struct_nestable, - atype_variant_nestable, - NR_ABSTRACT_TYPES, +enum lttng_kernel_type { + lttng_kernel_type_integer, + lttng_kernel_type_string, + lttng_kernel_type_enum_nestable, + lttng_kernel_type_array_nestable, + lttng_kernel_type_sequence_nestable, + lttng_kernel_type_struct_nestable, + lttng_kernel_type_variant_nestable, + NR_LTTNG_KERNEL_TYPES, }; enum lttng_string_encodings { @@ -74,7 +74,7 @@ struct lttng_enum_entry { #define __type_integer(_type, _size, _alignment, _signedness, \ _byte_order, _base, _encoding) \ { \ - .atype = atype_integer, \ + .type = lttng_kernel_type_integer, \ .u.integer = \ { \ .size = (_size) ? : sizeof(_type) * CHAR_BIT, \ @@ -96,7 +96,7 @@ struct lttng_integer_type { }; struct lttng_type { - enum abstract_types atype; + enum lttng_kernel_type type; union { struct lttng_integer_type integer; struct { @@ -157,7 +157,7 @@ union lttng_ctx_value { * lttng_ctx_field because cpu hotplug needs fixed-location addresses. */ struct lttng_perf_counter_field { -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) +#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) struct lttng_cpuhp_node cpuhp_prepare; struct lttng_cpuhp_node cpuhp_online; #else @@ -234,6 +234,7 @@ enum lttng_event_type { enum lttng_bytecode_node_type { LTTNG_BYTECODE_NODE_TYPE_FILTER, + LTTNG_BYTECODE_NODE_TYPE_CAPTURE, }; struct lttng_bytecode_node { @@ -257,12 +258,20 @@ enum lttng_bytecode_interpreter_ret { /* Other bits are kept for future use. */ }; +struct lttng_interpreter_output; + struct lttng_bytecode_runtime { /* Associated bytecode */ struct lttng_bytecode_node *bc; - uint64_t (*filter)(void *filter_data, - struct lttng_probe_ctx *lttng_probe_ctx, - const char *filter_stack_data); + union { + uint64_t (*filter)(void *filter_data, + struct lttng_probe_ctx *lttng_probe_ctx, + const char *filter_stack_data); + uint64_t (*capture)(void *filter_data, + struct lttng_probe_ctx *lttng_probe_ctx, + const char *capture_stack_data, + struct lttng_interpreter_output *output); + } interpreter_funcs; int link_failed; struct list_head node; /* list of bytecode runtime in event */ struct lttng_ctx *ctx; @@ -329,6 +338,7 @@ struct lttng_event { struct { enum lttng_syscall_entryexit entryexit; enum lttng_syscall_abi abi; + struct hlist_node node; /* chain registered syscall event */ } syscall; } u; struct list_head list; /* Event list in session */ @@ -343,10 +353,15 @@ struct lttng_event { int has_enablers_without_bytecode; }; +struct lttng_kernel_notifier_ctx { + int eval_capture; +}; + // FIXME: Really similar to lttng_event above. Could those be merged ? struct lttng_event_notifier { enum lttng_event_type evtype; /* First field. */ uint64_t user_token; + uint64_t error_counter_index; int enabled; int registered; /* has reg'd tracepoint probe */ const struct lttng_event_desc *desc; @@ -371,9 +386,15 @@ struct lttng_event_notifier { struct hlist_node hlist; /* session ht of event_notifiers */ /* list of struct lttng_bytecode_runtime, sorted by seqnum */ struct list_head filter_bytecode_runtime_head; + size_t num_captures; + struct list_head capture_bytecode_runtime_head; int has_enablers_without_bytecode; + int eval_capture; /* Should evaluate capture */ - void (*send_notification)(struct lttng_event_notifier *event_notifier); + void (*send_notification)(struct lttng_event_notifier *event_notifier, + struct lttng_probe_ctx *lttng_probe_ctx, + const char *interpreter_stack_data, + struct lttng_kernel_notifier_ctx *notif_ctx); struct lttng_event_notifier_group *group; /* Weak ref */ }; @@ -391,7 +412,7 @@ struct lttng_enabler { enum lttng_enabler_format_type format_type; - /* head list of struct lttng_ust_filter_bytecode_node */ + /* head list of struct lttng_bytecode_node */ struct list_head filter_bytecode_head; struct lttng_kernel_event event_param; @@ -413,10 +434,16 @@ struct lttng_event_enabler { struct lttng_event_notifier_enabler { struct lttng_enabler base; + uint64_t error_counter_index; struct list_head node; /* List of event_notifier enablers */ struct lttng_event_notifier_group *group; + + /* head list of struct lttng_bytecode_node */ + struct list_head capture_bytecode_head; + uint64_t num_captures; }; + static inline struct lttng_enabler *lttng_event_enabler_as_enabler( struct lttng_event_enabler *event_enabler) @@ -494,6 +521,28 @@ struct lttng_channel_ops { uint64_t *id); }; +struct lttng_counter_ops { + struct lib_counter *(*counter_create)(size_t nr_dimensions, + const size_t *max_nr_elem, /* for each dimension */ + int64_t global_sum_step); + void (*counter_destroy)(struct lib_counter *counter); + int (*counter_add)(struct lib_counter *counter, const size_t *dimension_indexes, + int64_t v); + /* + * counter_read reads a specific cpu's counter if @cpu >= 0, or + * the global aggregation counter if @cpu == -1. + */ + int (*counter_read)(struct lib_counter *counter, const size_t *dimension_indexes, int cpu, + int64_t *value, bool *overflow, bool *underflow); + /* + * counter_aggregate returns the total sum of all per-cpu counters and + * the global aggregation counter. + */ + int (*counter_aggregate)(struct lib_counter *counter, const size_t *dimension_indexes, + int64_t *value, bool *overflow, bool *underflow); + int (*counter_clear)(struct lib_counter *counter, const size_t *dimension_indexes); +}; + struct lttng_transport { char *name; struct module *owner; @@ -501,6 +550,13 @@ struct lttng_transport { struct lttng_channel_ops ops; }; +struct lttng_counter_transport { + char *name; + struct module *owner; + struct list_head node; + struct lttng_counter_ops ops; +}; + struct lttng_syscall_filter; #define LTTNG_EVENT_HT_BITS 12 @@ -529,18 +585,19 @@ struct lttng_channel { struct list_head list; /* Channel list */ struct lttng_channel_ops *ops; struct lttng_transport *transport; - struct lttng_event **sc_table; /* for syscall tracing */ - struct lttng_event **compat_sc_table; - struct lttng_event **sc_exit_table; /* for syscall exit tracing */ - struct lttng_event **compat_sc_exit_table; - struct lttng_event *sc_unknown; /* for unknown syscalls */ - struct lttng_event *sc_compat_unknown; - struct lttng_event *sc_exit_unknown; - struct lttng_event *compat_sc_exit_unknown; + struct hlist_head *sc_table; /* for syscall tracing */ + struct hlist_head *compat_sc_table; + struct hlist_head *sc_exit_table; /* for syscall exit tracing */ + struct hlist_head *compat_sc_exit_table; + struct hlist_head sc_unknown; /* for unknown syscalls */ + struct hlist_head sc_compat_unknown; + struct hlist_head sc_exit_unknown; + struct hlist_head compat_sc_exit_unknown; struct lttng_syscall_filter *sc_filter; int header_type; /* 0: unset, 1: compact, 2: large */ enum channel_type channel_type; - int syscall_all; + int syscall_all_entry; + int syscall_all_exit; unsigned int metadata_dumped:1, sys_enter_registered:1, sys_exit_registered:1, @@ -628,6 +685,14 @@ struct lttng_session { char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN]; }; +struct lttng_counter { + struct file *file; /* File associated to counter. */ + struct file *owner; + struct lttng_counter_transport *transport; + struct lib_counter *counter; + struct lttng_counter_ops *ops; +}; + struct lttng_event_notifier_group { struct file *file; /* File associated to event notifier group */ struct file *notif_file; /* File used to expose notifications to userspace. */ @@ -712,7 +777,23 @@ int lttng_session_metadata_regenerate(struct lttng_session *session); int lttng_session_statedump(struct lttng_session *session); void metadata_cache_destroy(struct kref *kref); +struct lttng_counter *lttng_kernel_counter_create( + const char *counter_transport_name, size_t number_dimensions, + const size_t *dimensions_sizes); +int lttng_kernel_counter_read(struct lttng_counter *counter, + const size_t *dimension_indexes, int32_t cpu, + int64_t *val, bool *overflow, bool *underflow); +int lttng_kernel_counter_aggregate(struct lttng_counter *counter, + const size_t *dimension_indexes, int64_t *val, + bool *overflow, bool *underflow); +int lttng_kernel_counter_clear(struct lttng_counter *counter, + const size_t *dimension_indexes); + + struct lttng_event_notifier_group *lttng_event_notifier_group_create(void); +int lttng_event_notifier_group_create_error_counter( + struct file *event_notifier_group_file, + const struct lttng_kernel_counter_conf *error_counter_conf); void lttng_event_notifier_group_destroy( struct lttng_event_notifier_group *event_notifier_group); @@ -748,6 +829,7 @@ struct lttng_event *lttng_event_compat_old_create(struct lttng_channel *chan, struct lttng_event_notifier *lttng_event_notifier_create( const struct lttng_event_desc *event_notifier_desc, uint64_t id, + uint64_t error_counter_idx, struct lttng_event_notifier_group *event_notifier_group, struct lttng_kernel_event_notifier *event_notifier_param, void *filter, @@ -755,6 +837,7 @@ struct lttng_event_notifier *lttng_event_notifier_create( struct lttng_event_notifier *_lttng_event_notifier_create( const struct lttng_event_desc *event_notifier_desc, uint64_t id, + uint64_t error_counter_idx, struct lttng_event_notifier_group *event_notifier_group, struct lttng_kernel_event_notifier *event_notifier_param, void *filter, @@ -771,6 +854,9 @@ int lttng_event_notifier_disable(struct lttng_event_notifier *event_notifier); void lttng_transport_register(struct lttng_transport *transport); void lttng_transport_unregister(struct lttng_transport *transport); +void lttng_counter_transport_register(struct lttng_counter_transport *transport); +void lttng_counter_transport_unregister(struct lttng_counter_transport *transport); + void synchronize_trace(void); int lttng_abi_init(void); int lttng_abi_compat_old_init(void); @@ -809,8 +895,8 @@ int lttng_desc_match_enabler(const struct lttng_event_desc *desc, struct lttng_enabler *enabler); #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) -int lttng_syscalls_register_event(struct lttng_channel *chan, void *filter); -int lttng_syscalls_unregister_event(struct lttng_channel *chan); +int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler, void *filter); +int lttng_syscalls_unregister_channel(struct lttng_channel *chan); int lttng_syscalls_destroy_event(struct lttng_channel *chan); int lttng_syscall_filter_enable_event( struct lttng_channel *chan, @@ -827,17 +913,17 @@ int lttng_syscalls_register_event_notifier( void *filter); int lttng_syscals_create_matching_event_notifiers( struct lttng_event_notifier_enabler *event_notifier_enabler, void *filter); -int lttng_syscalls_unregister_event_notifier(struct lttng_event_notifier_group *group); +int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group); int lttng_syscall_filter_enable_event_notifier(struct lttng_event_notifier *event_notifier); int lttng_syscall_filter_disable_event_notifier(struct lttng_event_notifier *event_notifier); #else static inline int lttng_syscalls_register_event( - struct lttng_channel *chan, void *filter) + struct lttng_event_enabler *event_enabler, void *filter) { return -ENOSYS; } -static inline int lttng_syscalls_unregister_event(struct lttng_channel *chan) +static inline int lttng_syscalls_unregister_channel(struct lttng_channel *chan) { return 0; } @@ -871,7 +957,7 @@ static inline int lttng_syscalls_register_event_notifier( return -ENOSYS; } -static inline int lttng_syscalls_unregister_event_notifier( +static inline int lttng_syscalls_unregister_event_notifier_group( struct lttng_event_notifier_group *group) { return 0; @@ -898,11 +984,16 @@ int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event int lttng_event_notifier_enabler_attach_filter_bytecode( struct lttng_event_notifier_enabler *event_notifier_enabler, struct lttng_kernel_filter_bytecode __user *bytecode); +int lttng_event_notifier_enabler_attach_capture_bytecode( + struct lttng_event_notifier_enabler *event_notifier_enabler, + struct lttng_kernel_capture_bytecode __user *bytecode); void lttng_enabler_link_bytecode(const struct lttng_event_desc *event_desc, struct lttng_ctx *ctx, - struct list_head *bytecode_runtime_head, - struct lttng_enabler *enabler); + struct list_head *instance_bytecode_runtime_head, + struct list_head *enabler_bytecode_runtime_head); +void lttng_free_event_filter_runtime(struct lttng_event *event); +void lttng_free_event_notifier_filter_runtime(struct lttng_event_notifier *event_notifier); int lttng_probes_init(void); @@ -956,7 +1047,7 @@ int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx) int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type); #if defined(CONFIG_CGROUPS) && \ - ((LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0)) || \ + ((LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,6,0)) || \ LTTNG_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); #else @@ -968,7 +1059,7 @@ int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx) #endif #if defined(CONFIG_IPC_NS) && \ - (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); #else static inline @@ -979,7 +1070,7 @@ int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx) #endif #if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ - (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); #else static inline @@ -990,7 +1081,7 @@ int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx) #endif #if defined(CONFIG_NET_NS) && \ - (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); #else static inline @@ -1001,7 +1092,7 @@ int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx) #endif #if defined(CONFIG_PID_NS) && \ - (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); #else static inline @@ -1012,7 +1103,7 @@ int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx) #endif #if defined(CONFIG_USER_NS) && \ - (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); #else static inline @@ -1023,7 +1114,7 @@ int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx) #endif #if defined(CONFIG_UTS_NS) && \ - (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); #else static inline @@ -1034,7 +1125,7 @@ int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx) #endif #if defined(CONFIG_TIME_NS) && \ - (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0)) int lttng_add_time_ns_to_ctx(struct lttng_ctx **ctx); #else static inline @@ -1268,7 +1359,7 @@ extern const struct file_operations lttng_syscall_list_fops; static inline bool lttng_is_bytewise_integer(const struct lttng_type *type) { - if (type->atype != atype_integer) + if (type->type != lttng_kernel_type_integer) return false; switch (type->u.integer.size) { case 8: /* Fall-through. */