_fields \
)
-#define lttng_kernel_static_ctx_field(_event_field, _get_size, _get_size_arg, _record, _get_value, _destroy, _priv) \
- __LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_ctx_field, { \
- .event_field = (_event_field), \
- .get_size = (_get_size), \
- .get_size_arg = (_get_size_arg), \
- .record = (_record), \
- .get_value = (_get_value), \
- .destroy = (_destroy), \
- .priv = (_priv), \
- })
-
#define lttng_kernel_static_enum_entry_value(_string, _value) \
__LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \
.start = { \
} \
}),
-union lttng_ctx_value {
- int64_t s64;
- const char *str;
- double d;
-};
-
-/*
- * 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_probe_ctx {
+struct lttng_kernel_probe_ctx {
struct lttng_kernel_event_common *event;
uint8_t interruptible;
};
-struct lttng_kernel_ctx_field {
- const struct lttng_kernel_event_field *event_field;
- size_t (*get_size)(size_t offset);
- size_t (*get_size_arg)(size_t offset, struct lttng_kernel_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan);
- void (*record)(struct lttng_kernel_ctx_field *field,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan);
- void (*get_value)(struct lttng_kernel_ctx_field *field,
- struct lttng_probe_ctx *lttng_probe_ctx,
- union lttng_ctx_value *value);
- void (*destroy)(struct lttng_kernel_ctx_field *field);
- 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 */
-};
-
struct lttng_kernel_event_desc {
const char *event_name; /* lttng-modules name */
const char *event_kname; /* Linux kernel name (tracepoints) */
struct lttng_krp; /* Kretprobe handling */
-enum lttng_kernel_bytecode_type {
- LTTNG_KERNEL_BYTECODE_TYPE_FILTER,
- LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE,
-};
-
-struct lttng_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_interpreter_output;
-
-struct lttng_bytecode_runtime {
- /* Associated bytecode */
- enum lttng_kernel_bytecode_type type;
- struct lttng_bytecode_node *bc;
- int (*interpreter_func)(struct lttng_bytecode_runtime *kernel_bytecode,
- const char *interpreter_stack_data,
- struct lttng_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;
-};
-
-/*
- * 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_uprobe_handler {
struct lttng_kernel_event_common *event;
loff_t offset;
int eval_filter; /* Need to evaluate filters */
int (*run_filter)(const struct lttng_kernel_event_common *event,
const char *stack_data,
- struct lttng_probe_ctx *probe_ctx,
+ struct lttng_kernel_probe_ctx *probe_ctx,
void *filter_ctx);
};
int eval_capture; /* Need to evaluate capture */
void (*notification_send)(struct lttng_kernel_event_notifier *event_notifier,
const char *stack_data,
- struct lttng_probe_ctx *probe_ctx,
+ struct lttng_kernel_probe_ctx *probe_ctx,
struct lttng_kernel_notification_ctx *notif_ctx);
};
-enum lttng_enabler_format_type {
- LTTNG_ENABLER_FORMAT_STAR_GLOB,
- LTTNG_ENABLER_FORMAT_NAME,
-};
-
-/*
- * 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_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_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)
-{
- 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;
-}
-
struct lttng_channel_ops {
struct channel *(*channel_create)(const char *name,
void *priv,
struct list_head *lttng_get_probe_list_head(void);
-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_fix_pending_events(void);
int lttng_fix_pending_event_notifiers(void);
int lttng_session_active(void);
void lttng_clock_ref(void);
void lttng_clock_unref(void);
-int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc,
- struct lttng_enabler *enabler);
-
-#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
-
-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);
-
-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);
void lttng_free_event_filter_runtime(struct lttng_kernel_event_common *event);
int lttng_probes_init(void);
-extern struct lttng_kernel_ctx *lttng_static_ctx;
-
-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
-
int lttng_logger_init(void);
void lttng_logger_exit(void);
extern const struct file_operations lttng_tracepoint_list_fops;
extern const struct file_operations lttng_syscall_list_fops;
-#define TRACEPOINT_HAS_DATA_ARG
-
#endif /* _LTTNG_EVENTS_H */
projects / lttng-modules.git / blobdiff