X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-events.h;h=8197eb83a5bafc8c11e17f1a3d3f0bbdc5599262;hb=263b6c88138c3354d63dba3c70a965de94becd22;hp=8fe36a7326121f7f7325112c7d77b0105e1eb9ea;hpb=1c88f269135ba48b0adb8a8a1f8b32e8b3c4cbb9;p=lttng-modules.git diff --git a/lttng-events.h b/lttng-events.h index 8fe36a73..8197eb83 100644 --- a/lttng-events.h +++ b/lttng-events.h @@ -1,4 +1,4 @@ -/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) +/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only) * * lttng-events.h * @@ -20,6 +20,7 @@ #include #include #include +#include #define lttng_is_signed_type(type) (((type)(-1)) < 0) @@ -35,16 +36,12 @@ struct lib_ring_buffer_config; enum abstract_types { atype_integer, - atype_enum, - atype_array, - atype_sequence, atype_string, - atype_struct, - atype_array_compound, /* Array of compound types. */ - atype_sequence_compound, /* Sequence of compound types. */ - atype_variant, - atype_array_bitfield, - atype_sequence_bitfield, + atype_enum_nestable, + atype_array_nestable, + atype_sequence_nestable, + atype_struct_nestable, + atype_variant_nestable, NR_ABSTRACT_TYPES, }; @@ -77,7 +74,7 @@ struct lttng_enum_entry { _byte_order, _base, _encoding) \ { \ .atype = atype_integer, \ - .u.basic.integer = \ + .u.integer = \ { \ .size = (_size) ? : sizeof(_type) * CHAR_BIT, \ .alignment = (_alignment) ? : lttng_alignof(_type) * CHAR_BIT, \ @@ -97,55 +94,38 @@ struct lttng_integer_type { enum lttng_string_encodings encoding; }; -union _lttng_basic_type { - struct lttng_integer_type integer; - struct { - const struct lttng_enum_desc *desc; /* Enumeration mapping */ - struct lttng_integer_type container_type; - } enumeration; - struct { - enum lttng_string_encodings encoding; - } string; -}; - -struct lttng_basic_type { - enum abstract_types atype; - union { - union _lttng_basic_type basic; - } u; -}; - struct lttng_type { enum abstract_types atype; union { - union _lttng_basic_type basic; + struct lttng_integer_type integer; struct { - struct lttng_basic_type elem_type; - unsigned int length; /* num. elems. */ - unsigned int elem_alignment; /* alignment override */ - } array; + enum lttng_string_encodings encoding; + } string; struct { - struct lttng_basic_type length_type; - struct lttng_basic_type elem_type; - unsigned int elem_alignment; /* alignment override */ - } sequence; + const struct lttng_enum_desc *desc; /* Enumeration mapping */ + const struct lttng_type *container_type; + } enum_nestable; struct { - uint32_t nr_fields; - struct lttng_event_field *fields; /* Array of fields. */ - } _struct; + const struct lttng_type *elem_type; + unsigned int length; /* Num. elems. */ + unsigned int alignment; + } array_nestable; struct { - struct lttng_type *elem_type; - unsigned int length; /* num. elems. */ - } array_compound; + const char *length_name; /* Length field name. */ + const struct lttng_type *elem_type; + unsigned int alignment; /* Alignment before elements. */ + } sequence_nestable; struct { - struct lttng_type *elem_type; - const char *length_name; - } sequence_compound; + unsigned int nr_fields; + const struct lttng_event_field *fields; /* Array of fields. */ + unsigned int alignment; + } struct_nestable; struct { const char *tag_name; - struct lttng_event_field *choices; /* Array of fields. */ - uint32_t nr_choices; - } variant; + const struct lttng_event_field *choices; /* Array of fields. */ + unsigned int nr_choices; + unsigned int alignment; + } variant_nestable; } u; }; @@ -161,7 +141,8 @@ struct lttng_event_field { const char *name; struct lttng_type type; unsigned int nowrite:1, /* do not write into trace */ - user:1; /* fetch from user-space */ + user:1, /* fetch from user-space */ + nofilter:1; /* do not consider for filter */ }; union lttng_ctx_value { @@ -314,9 +295,6 @@ struct lttng_event { struct lttng_krp *lttng_krp; char *symbol_name; } kretprobe; - struct { - char *symbol_name; - } ftrace; struct { struct inode *inode; struct list_head head; @@ -489,19 +467,36 @@ struct lttng_dynamic_len_stack { DECLARE_PER_CPU(struct lttng_dynamic_len_stack, lttng_dynamic_len_stack); /* - * struct lttng_pid_tracker declared in header due to deferencing of *v + * struct lttng_id_tracker declared in header due to deferencing of *v * in RCU_INITIALIZER(v). */ -#define LTTNG_PID_HASH_BITS 6 -#define LTTNG_PID_TABLE_SIZE (1 << LTTNG_PID_HASH_BITS) +#define LTTNG_ID_HASH_BITS 6 +#define LTTNG_ID_TABLE_SIZE (1 << LTTNG_ID_HASH_BITS) -struct lttng_pid_tracker { - struct hlist_head pid_hash[LTTNG_PID_TABLE_SIZE]; +enum tracker_type { + TRACKER_PID, + TRACKER_VPID, + TRACKER_UID, + TRACKER_VUID, + TRACKER_GID, + TRACKER_VGID, + + TRACKER_UNKNOWN, +}; + +struct lttng_id_tracker_rcu { + struct hlist_head id_hash[LTTNG_ID_TABLE_SIZE]; +}; + +struct lttng_id_tracker { + struct lttng_session *session; + enum tracker_type tracker_type; + struct lttng_id_tracker_rcu *p; /* RCU dereferenced. */ }; -struct lttng_pid_hash_node { +struct lttng_id_hash_node { struct hlist_node hlist; - int pid; + int id; }; struct lttng_session { @@ -514,7 +509,12 @@ struct lttng_session { unsigned int free_chan_id; /* Next chan ID to allocate */ uuid_le uuid; /* Trace session unique ID */ struct lttng_metadata_cache *metadata_cache; - struct lttng_pid_tracker *pid_tracker; + struct lttng_id_tracker pid_tracker; + struct lttng_id_tracker vpid_tracker; + struct lttng_id_tracker uid_tracker; + struct lttng_id_tracker vuid_tracker; + struct lttng_id_tracker gid_tracker; + struct lttng_id_tracker vgid_tracker; unsigned int metadata_dumped:1, tstate:1; /* Transient enable state */ /* List of enablers */ @@ -611,17 +611,20 @@ void lttng_probes_exit(void); int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, struct channel *chan); -int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node); -struct lttng_pid_tracker *lttng_pid_tracker_create(void); -void lttng_pid_tracker_destroy(struct lttng_pid_tracker *lpf); -bool lttng_pid_tracker_lookup(struct lttng_pid_tracker *lpf, int pid); -int lttng_pid_tracker_add(struct lttng_pid_tracker *lpf, int pid); -int lttng_pid_tracker_del(struct lttng_pid_tracker *lpf, int pid); +int lttng_id_tracker_get_node_id(const struct lttng_id_hash_node *node); +int lttng_id_tracker_empty_set(struct lttng_id_tracker *lf); +void lttng_id_tracker_destroy(struct lttng_id_tracker *lf, bool rcu); +bool lttng_id_tracker_lookup(struct lttng_id_tracker_rcu *p, int id); +int lttng_id_tracker_add(struct lttng_id_tracker *lf, int id); +int lttng_id_tracker_del(struct lttng_id_tracker *lf, int id); -int lttng_session_track_pid(struct lttng_session *session, int pid); -int lttng_session_untrack_pid(struct lttng_session *session, int pid); +int lttng_session_track_id(struct lttng_session *session, + enum tracker_type tracker_type, int id); +int lttng_session_untrack_id(struct lttng_session *session, + enum tracker_type tracker_type, int id); -int lttng_session_list_tracker_pids(struct lttng_session *session); +int lttng_session_list_tracker_ids(struct lttng_session *session, + enum tracker_type tracker_type); void lttng_clock_ref(void); void lttng_clock_unref(void); @@ -718,6 +721,97 @@ 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_UBUNTU_KERNEL_RANGE(4,4,0,0, 4,5,0,0)) +int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx); +#else +static inline +int lttng_add_cgroup_ns_to_ctx(struct lttng_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_IPC_NS) && \ + (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) +int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx); +#else +static inline +int lttng_add_ipc_ns_to_ctx(struct lttng_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if !defined(LTTNG_MNT_NS_MISSING_HEADER) && \ + (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) +int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx); +#else +static inline +int lttng_add_mnt_ns_to_ctx(struct lttng_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_NET_NS) && \ + (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) +int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx); +#else +static inline +int lttng_add_net_ns_to_ctx(struct lttng_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_PID_NS) && \ + (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) +int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx); +#else +static inline +int lttng_add_pid_ns_to_ctx(struct lttng_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_USER_NS) && \ + (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) +int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx); +#else +static inline +int lttng_add_user_ns_to_ctx(struct lttng_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +#if defined(CONFIG_UTS_NS) && \ + (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) +int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx); +#else +static inline +int lttng_add_uts_ns_to_ctx(struct lttng_ctx **ctx) +{ + return -ENOSYS; +} +#endif + +int lttng_add_uid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_euid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_suid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_gid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_egid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_sgid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_vuid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_veuid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_vsuid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_vgid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_vegid_to_ctx(struct lttng_ctx **ctx); +int lttng_add_vsgid_to_ctx(struct lttng_ctx **ctx); + #if defined(CONFIG_PERF_EVENTS) int lttng_add_perf_counter_to_ctx(uint32_t type, uint64_t config, @@ -862,32 +956,6 @@ int lttng_kretprobes_event_enable_state(struct lttng_event *event, } #endif -#if defined(CONFIG_DYNAMIC_FTRACE) && !defined(LTTNG_FTRACE_MISSING_HEADER) -int lttng_ftrace_register(const char *name, - const char *symbol_name, - struct lttng_event *event); -void lttng_ftrace_unregister(struct lttng_event *event); -void lttng_ftrace_destroy_private(struct lttng_event *event); -#else -static inline -int lttng_ftrace_register(const char *name, - const char *symbol_name, - struct lttng_event *event) -{ - return -ENOSYS; -} - -static inline -void lttng_ftrace_unregister(struct lttng_event *event) -{ -} - -static inline -void lttng_ftrace_destroy_private(struct lttng_event *event) -{ -} -#endif - int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); extern const struct file_operations lttng_tracepoint_list_fops; @@ -895,4 +963,20 @@ extern const struct file_operations lttng_syscall_list_fops; #define TRACEPOINT_HAS_DATA_ARG +static inline bool lttng_is_bytewise_integer(const struct lttng_type *type) +{ + if (type->atype != atype_integer) + return false; + switch (type->u.integer.size) { + case 8: /* Fall-through. */ + case 16: /* Fall-through. */ + case 32: /* Fall-through. */ + case 64: + break; + default: + return false; + } + return true; +} + #endif /* _LTTNG_EVENTS_H */