Move event notifier and counter structures to private header

[lttng-modules.git] / include / lttng / events-internal.h

diff --git a/include/lttng/events-internal.h b/include/lttng/events-internal.h
index 6b4189770ee7686f17fb2d88373ce534c34106fb..097f5e979723c8a3969f82f3e60e729fb63162ef 100644 (file)
--- a/include/lttng/events-internal.h
+++ b/include/lttng/events-internal.h
@@ -295,6 +295,87 @@ struct lttng_kernel_channel_buffer_ops_private {
                        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_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. */
+       struct list_head node;          /* event notifier group list */
+       struct list_head enablers_head; /* List of enablers */
+       struct list_head event_notifiers_head; /* List of event notifier */
+       struct lttng_event_notifier_ht event_notifiers_ht; /* Hash table of event notifiers */
+       struct lttng_kernel_channel_buffer_ops *ops;
+       struct lttng_transport *transport;
+       struct channel *chan;           /* Ring buffer channel for event notifier group. */
+       struct lib_ring_buffer *buf;    /* Ring buffer for event notifier group. */
+       wait_queue_head_t read_wait;
+       struct irq_work wakeup_pending; /* Pending wakeup irq work. */
+       struct lttng_kernel_event_notifier *sc_unknown; /* for unknown syscalls */
+       struct lttng_kernel_event_notifier *sc_compat_unknown;
+
+       struct lttng_syscall_filter *sc_filter;
+
+       struct hlist_head *event_notifier_syscall_dispatch;
+       struct hlist_head *event_notifier_compat_syscall_dispatch;
+       struct hlist_head *event_notifier_exit_syscall_dispatch;
+       struct hlist_head *event_notifier_exit_compat_syscall_dispatch;
+
+       struct hlist_head event_notifier_unknown_syscall_dispatch;
+       struct hlist_head event_notifier_compat_unknown_syscall_dispatch;
+       struct hlist_head event_notifier_exit_unknown_syscall_dispatch;
+       struct hlist_head event_notifier_exit_compat_unknown_syscall_dispatch;
+
+       int syscall_all_entry;
+       int syscall_all_exit;
+
+       unsigned int sys_enter_registered:1, sys_exit_registered:1;
+
+       struct lttng_counter *error_counter;
+       size_t error_counter_len;
+};
+
+struct lttng_transport {
+       char *name;
+       struct module *owner;
+       struct list_head node;
+       struct lttng_kernel_channel_buffer_ops ops;
+};
+
+struct lttng_counter_transport {
+       char *name;
+       struct module *owner;
+       struct list_head node;
+       struct lttng_counter_ops ops;
+};
+
 extern struct lttng_kernel_ctx *lttng_static_ctx;
 
 static inline