_fields \
)
-#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), \
- })
-
#define lttng_kernel_static_enum_entry_value(_string, _value) \
__LTTNG_COMPOUND_LITERAL(const struct lttng_kernel_enum_entry, { \
.start = { \
} \
}),
-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_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)(void *priv, struct lttng_probe_ctx *probe_ctx,
- size_t offset);
- void (*record)(void *priv, struct lttng_probe_ctx *probe_ctx,
- struct lib_ring_buffer_ctx *ctx,
- struct lttng_channel *chan);
- void (*get_value)(void *priv, struct lttng_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 */
-};
-
struct lttng_kernel_event_desc {
const char *event_name; /* lttng-modules name */
const char *event_kname; /* Linux kernel name (tracepoints) */
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);
projects / lttng-modules.git / blobdiff