X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fevents-internal.h;h=f3bcdf63f7a6ac0ddfe8d5b0f26d61b66e6b89a4;hb=e978f27486ddac0b9cbea5577fc413c67bc61141;hp=0c7628483271c06c0b012444371bbaced4e100a8;hpb=437d5aa59380583ce1cd14d394a53b398be1275d;p=lttng-modules.git diff --git a/include/lttng/events-internal.h b/include/lttng/events-internal.h index 0c762848..f3bcdf63 100644 --- a/include/lttng/events-internal.h +++ b/include/lttng/events-internal.h @@ -10,6 +10,229 @@ #include +enum lttng_enabler_format_type { + LTTNG_ENABLER_FORMAT_STAR_GLOB, + LTTNG_ENABLER_FORMAT_NAME, +}; + +/* + * Objects in a linked-list of enablers, owned by an event. + */ +struct lttng_enabler_ref { + struct list_head node; /* enabler ref list */ + struct lttng_enabler *ref; /* backward ref */ +}; + +struct lttng_krp; /* Kretprobe handling */ + +struct lttng_uprobe_handler { + struct lttng_kernel_event_common *event; + loff_t offset; + struct uprobe_consumer up_consumer; + struct list_head node; +}; + +struct lttng_kprobe { + struct kprobe kp; + char *symbol_name; +}; + +struct lttng_uprobe { + struct inode *inode; + struct list_head head; +}; + +enum lttng_syscall_entryexit { + LTTNG_SYSCALL_ENTRY, + LTTNG_SYSCALL_EXIT, +}; + +enum lttng_syscall_abi { + LTTNG_SYSCALL_ABI_NATIVE, + LTTNG_SYSCALL_ABI_COMPAT, +}; + +struct lttng_kernel_event_common_private { + struct lttng_kernel_event_common *pub; /* Public event interface */ + + const struct lttng_kernel_event_desc *desc; + /* Backward references: list of lttng_enabler_ref (ref to enablers) */ + struct list_head enablers_ref_head; + int registered; /* has reg'd tracepoint probe */ + uint64_t user_token; + + int has_enablers_without_filter_bytecode; + /* list of struct lttng_kernel_bytecode_runtime, sorted by seqnum */ + struct list_head filter_bytecode_runtime_head; + enum lttng_kernel_abi_instrumentation instrumentation; + /* Selected by instrumentation */ + union { + struct lttng_kprobe kprobe; + struct lttng_uprobe uprobe; + struct { + struct lttng_krp *lttng_krp; + char *symbol_name; + } kretprobe; + struct { + enum lttng_syscall_entryexit entryexit; + enum lttng_syscall_abi abi; + struct hlist_node node; /* chain registered syscall event_notifier */ + unsigned int syscall_id; + } syscall; + } u; +}; + +struct lttng_kernel_event_recorder_private { + struct lttng_kernel_event_common_private parent; + + struct lttng_kernel_event_recorder *pub; /* Public event interface */ + struct list_head node; /* Event recorder list */ + struct hlist_node hlist; /* Hash table of event recorders */ + struct lttng_kernel_ctx *ctx; + unsigned int id; + unsigned int metadata_dumped:1; +}; + +struct lttng_kernel_event_notifier_private { + struct lttng_kernel_event_common_private parent; + + struct lttng_kernel_event_notifier *pub; /* Public event notifier interface */ + struct lttng_event_notifier_group *group; /* weak ref */ + size_t num_captures; /* Needed to allocate the msgpack array. */ + uint64_t error_counter_index; + struct list_head node; /* Event notifier list */ + struct hlist_node hlist; /* Hash table of event notifiers */ + struct list_head capture_bytecode_runtime_head; + +}; + +enum lttng_kernel_bytecode_interpreter_ret { + LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1, + LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0, +}; + +enum lttng_kernel_bytecode_filter_result { + LTTNG_KERNEL_BYTECODE_FILTER_ACCEPT = 0, + LTTNG_KERNEL_BYTECODE_FILTER_REJECT = 1, +}; + +struct lttng_kernel_bytecode_filter_ctx { + enum lttng_kernel_bytecode_filter_result result; +}; + +struct lttng_interpreter_output; + +enum lttng_kernel_bytecode_type { + LTTNG_KERNEL_BYTECODE_TYPE_FILTER, + LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE, +}; + +struct lttng_kernel_bytecode_node { + enum lttng_kernel_bytecode_type type; + struct list_head node; + struct lttng_enabler *enabler; + struct { + uint32_t len; + uint32_t reloc_offset; + uint64_t seqnum; + char data[]; + } bc; +}; + +struct lttng_kernel_bytecode_runtime { + /* Associated bytecode */ + enum lttng_kernel_bytecode_type type; + struct lttng_kernel_bytecode_node *bc; + int (*interpreter_func)(struct lttng_kernel_bytecode_runtime *kernel_bytecode, + const char *interpreter_stack_data, + struct lttng_kernel_probe_ctx *lttng_probe_ctx, + void *caller_ctx); + int link_failed; + struct list_head node; /* list of bytecode runtime in event */ + struct lttng_kernel_ctx *ctx; +}; + +/* + * Enabler field, within whatever object is enabling an event. Target of + * backward reference. + */ +struct lttng_enabler { + enum lttng_enabler_format_type format_type; + + /* head list of struct lttng_kernel_bytecode_node */ + struct list_head filter_bytecode_head; + + struct lttng_kernel_abi_event event_param; + unsigned int enabled:1; + + uint64_t user_token; /* User-provided token. */ +}; + +struct lttng_event_enabler { + struct lttng_enabler base; + struct list_head node; /* per-session list of enablers */ + struct lttng_channel *chan; +}; + +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_kernel_bytecode_node */ + struct list_head capture_bytecode_head; + uint64_t num_captures; +}; + +struct lttng_ctx_value { + union { + int64_t s64; + const char *str; + double d; + } u; +}; + +/* + * We need to keep this perf counter field separately from struct + * lttng_kernel_ctx_field because cpu hotplug needs fixed-location addresses. + */ +struct lttng_perf_counter_field { +#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) + struct lttng_cpuhp_node cpuhp_prepare; + struct lttng_cpuhp_node cpuhp_online; +#else + struct notifier_block nb; + int hp_enable; +#endif + struct perf_event_attr *attr; + struct perf_event **e; /* per-cpu array */ + char *name; + struct lttng_kernel_event_field *event_field; +}; + +struct lttng_kernel_ctx_field { + const struct lttng_kernel_event_field *event_field; + size_t (*get_size)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, + size_t offset); + void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, + struct lib_ring_buffer_ctx *ctx, + struct lttng_channel *chan); + void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx, + struct lttng_ctx_value *value); + void (*destroy)(void *priv); + void *priv; +}; + +struct lttng_kernel_ctx { + struct lttng_kernel_ctx_field *fields; + unsigned int nr_fields; + unsigned int allocated_fields; + size_t largest_align; /* in bytes */ +}; + +extern struct lttng_kernel_ctx *lttng_static_ctx; + static inline const struct lttng_kernel_type_integer *lttng_kernel_get_type_integer(const struct lttng_kernel_type_common *type) { @@ -84,4 +307,482 @@ static inline bool lttng_kernel_type_is_bytewise_integer(const struct lttng_kern return true; } +int lttng_kernel_interpret_event_filter(const struct lttng_kernel_event_common *event, + const char *interpreter_stack_data, + struct lttng_kernel_probe_ctx *probe_ctx, + void *event_filter_ctx); + +static inline +struct lttng_enabler *lttng_event_enabler_as_enabler( + struct lttng_event_enabler *event_enabler) +{ + return &event_enabler->base; +} + +static inline +struct lttng_enabler *lttng_event_notifier_enabler_as_enabler( + struct lttng_event_notifier_enabler *event_notifier_enabler) +{ + return &event_notifier_enabler->base; +} + +int lttng_context_init(void); +void lttng_context_exit(void); +int lttng_kernel_context_append(struct lttng_kernel_ctx **ctx_p, + const struct lttng_kernel_ctx_field *f); +void lttng_kernel_context_remove_last(struct lttng_kernel_ctx **ctx_p); +struct lttng_kernel_ctx_field *lttng_kernel_get_context_field_from_index(struct lttng_kernel_ctx *ctx, + size_t index); +int lttng_kernel_find_context(struct lttng_kernel_ctx *ctx, const char *name); +int lttng_kernel_get_context_index(struct lttng_kernel_ctx *ctx, const char *name); +void lttng_kernel_destroy_context(struct lttng_kernel_ctx *ctx); +int lttng_add_pid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_cpu_id_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_procname_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_prio_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_nice_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_vpid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_tid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_vtid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_ppid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_vppid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_hostname_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_interruptible_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_need_reschedule_to_ctx(struct lttng_kernel_ctx **ctx); +#if defined(CONFIG_PREEMPT_RT_FULL) || defined(CONFIG_PREEMPT) +int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_preemptible_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif +#ifdef CONFIG_PREEMPT_RT_FULL +int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_migratable_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +int lttng_add_callstack_to_ctx(struct lttng_kernel_ctx **ctx, int type); + +#if defined(CONFIG_CGROUPS) && \ + ((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_kernel_ctx **ctx); +#else +static inline +int lttng_add_cgroup_ns_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_IPC_NS) && \ + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) +int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_ipc_ns_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) +int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_mnt_ns_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_NET_NS) && \ + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) +int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_net_ns_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_PID_NS) && \ + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) +int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_pid_ns_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_USER_NS) && \ + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) +int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_user_ns_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_UTS_NS) && \ + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,8,0)) +int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_uts_ns_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_TIME_NS) && \ + (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0)) +int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx); +#else +static inline +int lttng_add_time_ns_to_ctx(struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +int lttng_add_uid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_euid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_suid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_gid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_egid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_sgid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_vuid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_veuid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_vsuid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_vgid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_vegid_to_ctx(struct lttng_kernel_ctx **ctx); +int lttng_add_vsgid_to_ctx(struct lttng_kernel_ctx **ctx); + +#if defined(CONFIG_PERF_EVENTS) +int lttng_add_perf_counter_to_ctx(uint32_t type, + uint64_t config, + const char *name, + struct lttng_kernel_ctx **ctx); +int lttng_cpuhp_perf_counter_online(unsigned int cpu, + struct lttng_cpuhp_node *node); +int lttng_cpuhp_perf_counter_dead(unsigned int cpu, + struct lttng_cpuhp_node *node); +#else +static inline +int lttng_add_perf_counter_to_ctx(uint32_t type, + uint64_t config, + const char *name, + struct lttng_kernel_ctx **ctx) +{ + return -ENOSYS; +} +static inline +int lttng_cpuhp_perf_counter_online(unsigned int cpu, + struct lttng_cpuhp_node *node) +{ + return 0; +} +static inline +int lttng_cpuhp_perf_counter_dead(unsigned int cpu, + struct lttng_cpuhp_node *node) +{ + return 0; +} +#endif + +struct lttng_event_enabler *lttng_event_enabler_create( + enum lttng_enabler_format_type format_type, + struct lttng_kernel_abi_event *event_param, + struct lttng_channel *chan); + +int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler); +int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler); +struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create( + struct lttng_event_notifier_group *event_notifier_group, + enum lttng_enabler_format_type format_type, + struct lttng_kernel_abi_event_notifier *event_notifier_param); + +int lttng_event_notifier_enabler_enable( + struct lttng_event_notifier_enabler *event_notifier_enabler); +int lttng_event_notifier_enabler_disable( + struct lttng_event_notifier_enabler *event_notifier_enabler); + +int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler, + struct lttng_kernel_abi_filter_bytecode __user *bytecode); +int lttng_event_notifier_enabler_attach_filter_bytecode( + struct lttng_event_notifier_enabler *event_notifier_enabler, + struct lttng_kernel_abi_filter_bytecode __user *bytecode); +int lttng_event_notifier_enabler_attach_capture_bytecode( + struct lttng_event_notifier_enabler *event_notifier_enabler, + struct lttng_kernel_abi_capture_bytecode __user *bytecode); + +int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc, + struct lttng_enabler *enabler); + +void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_desc, + struct lttng_kernel_ctx *ctx, + struct list_head *instance_bytecode_runtime_head, + struct list_head *enabler_bytecode_runtime_head); + +#if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) +int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler); +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, + struct lttng_kernel_event_recorder *event); +int lttng_syscall_filter_disable_event( + struct lttng_channel *chan, + struct lttng_kernel_event_recorder *event); + +long lttng_channel_syscall_mask(struct lttng_channel *channel, + struct lttng_kernel_abi_syscall_mask __user *usyscall_mask); + +int lttng_syscalls_register_event_notifier( + struct lttng_event_notifier_enabler *event_notifier_enabler); +int lttng_syscalls_create_matching_event_notifiers( + struct lttng_event_notifier_enabler *event_notifier_enabler); +int lttng_syscalls_unregister_event_notifier_group(struct lttng_event_notifier_group *group); +int lttng_syscall_filter_enable_event_notifier(struct lttng_kernel_event_notifier *event_notifier); +int lttng_syscall_filter_disable_event_notifier(struct lttng_kernel_event_notifier *event_notifier); +#else +static inline int lttng_syscalls_register_event( + struct lttng_event_enabler *event_enabler) +{ + return -ENOSYS; +} + +static inline int lttng_syscalls_unregister_channel(struct lttng_channel *chan) +{ + return 0; +} + +static inline int lttng_syscalls_destroy(struct lttng_channel *chan) +{ + return 0; +} + +static inline int lttng_syscall_filter_enable_event(struct lttng_channel *chan, + struct lttng_kernel_event_recorder *event); +{ + return -ENOSYS; +} + +static inline int lttng_syscall_filter_disable_event(struct lttng_channel *chan, + struct lttng_kernel_event_recorder *event); +{ + return -ENOSYS; +} + +static inline long lttng_channel_syscall_mask(struct lttng_channel *channel, + struct lttng_kernel_syscall_mask __user *usyscall_mask) +{ + return -ENOSYS; +} + +static inline int lttng_syscalls_register_event_notifier( + struct lttng_event_notifier_group *group) +{ + return -ENOSYS; +} + +static inline int lttng_syscalls_unregister_event_notifier_group( + struct lttng_event_notifier_group *group) +{ + return 0; +} + +static inline int lttng_syscall_filter_enable_event_notifier( + struct lttng_event_notifier_group *group, + const char *name) +{ + return -ENOSYS; +} + +static inline int lttng_syscall_filter_disable_event_notifier( + struct lttng_event_notifier_group *group, + const char *name) +{ + return -ENOSYS; +} + +#endif + +#ifdef CONFIG_KPROBES +int lttng_kprobes_register_event(const char *name, + const char *symbol_name, + uint64_t offset, + uint64_t addr, + struct lttng_kernel_event_recorder *event); +void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event); +void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event); +int lttng_kprobes_register_event_notifier(const char *symbol_name, + uint64_t offset, + uint64_t addr, + struct lttng_kernel_event_notifier *event_notifier); +void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier); +void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier); +#else +static inline +int lttng_kprobes_register_event(const char *name, + const char *symbol_name, + uint64_t offset, + uint64_t addr, + struct lttng_kernel_event_recorder *event) +{ + return -ENOSYS; +} + +static inline +void lttng_kprobes_unregister_event(struct lttng_kernel_event_recorder *event) +{ +} + +static inline +void lttng_kprobes_destroy_event_private(struct lttng_kernel_event_recorder *event) +{ +} + +static inline +int lttng_kprobes_register_event_notifier(const char *symbol_name, + uint64_t offset, + uint64_t addr, + struct lttng_kernel_event_notifier *event_notifier) +{ + return -ENOSYS; +} + +static inline +void lttng_kprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier) +{ +} + +static inline +void lttng_kprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier) +{ +} +#endif + +int lttng_event_add_callsite(struct lttng_kernel_event_common *event, + struct lttng_kernel_abi_event_callsite __user *callsite); + +#ifdef CONFIG_UPROBES +int lttng_uprobes_register_event(const char *name, + int fd, struct lttng_kernel_event_recorder *event); +int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, + struct lttng_kernel_abi_event_callsite __user *callsite); +void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event); +void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event); +int lttng_uprobes_register_event_notifier(const char *name, + int fd, struct lttng_kernel_event_notifier *event_notifier); +void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier); +void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier); +#else +static inline +int lttng_uprobes_register_event(const char *name, + int fd, struct lttng_kernel_event_recorder *event) +{ + return -ENOSYS; +} + +static inline +int lttng_uprobes_event_add_callsite(struct lttng_kernel_event_common *event, + struct lttng_kernel_abi_event_callsite __user *callsite) +{ + return -ENOSYS; +} + +static inline +void lttng_uprobes_unregister_event(struct lttng_kernel_event_recorder *event) +{ +} + +static inline +void lttng_uprobes_destroy_event_private(struct lttng_kernel_event_recorder *event) +{ +} + +static inline +int lttng_uprobes_register_event_notifier(const char *name, + int fd, struct lttng_kernel_event_notifier *event_notifier) +{ + return -ENOSYS; +} + +static inline +void lttng_uprobes_unregister_event_notifier(struct lttng_kernel_event_notifier *event_notifier) +{ +} + +static inline +void lttng_uprobes_destroy_event_notifier_private(struct lttng_kernel_event_notifier *event_notifier) +{ +} +#endif + +#ifdef CONFIG_KRETPROBES +int lttng_kretprobes_register(const char *name, + const char *symbol_name, + uint64_t offset, + uint64_t addr, + struct lttng_kernel_event_recorder *event_entry, + struct lttng_kernel_event_recorder *event_exit); +void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event); +void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event); +int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, + int enable); +#else +static inline +int lttng_kretprobes_register(const char *name, + const char *symbol_name, + uint64_t offset, + uint64_t addr, + struct lttng_kernel_event_recorder *event_entry, + struct lttng_kernel_event_recorder *event_exit) +{ + return -ENOSYS; +} + +static inline +void lttng_kretprobes_unregister(struct lttng_kernel_event_recorder *event) +{ +} + +static inline +void lttng_kretprobes_destroy_private(struct lttng_kernel_event_recorder *event) +{ +} + +static inline +int lttng_kretprobes_event_enable_state(struct lttng_kernel_event_common *event, + int enable) +{ + return -ENOSYS; +} +#endif + +#define lttng_kernel_static_ctx_field(_event_field, _get_size, _record, _get_value, _destroy, _priv) \ + __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \ + .event_field = (_event_field), \ + .get_size = (_get_size), \ + .record = (_record), \ + .get_value = (_get_value), \ + .destroy = (_destroy), \ + .priv = (_priv), \ + }) + #endif /* _LTTNG_EVENTS_INTERNAL_H */