}
}
-/*
- * Create events associated with an event_enabler (if not already present),
- * and add backward reference from the event to the enabler.
- * Should be called with sessions mutex held.
- */
static
-int lttng_event_enabler_ref_events(struct lttng_event_recorder_enabler *event_enabler)
+void lttng_event_enabler_init_event_filter(struct lttng_event_enabler_common *event_enabler,
+ struct lttng_kernel_event_common *event)
{
- struct lttng_kernel_channel_buffer *chan = event_enabler->chan;
- struct lttng_event_enabler_common *base_enabler = lttng_event_recorder_enabler_as_enabler(event_enabler);
- struct lttng_kernel_event_recorder_private *event_recorder_priv;
- struct list_head *event_list_head = lttng_get_event_list_head_from_enabler(&event_enabler->parent);
-
- if (base_enabler->event_param.instrumentation == LTTNG_KERNEL_ABI_SYSCALL &&
- base_enabler->event_param.u.syscall.abi == LTTNG_KERNEL_ABI_SYSCALL_ABI_ALL &&
- base_enabler->event_param.u.syscall.match == LTTNG_KERNEL_ABI_SYSCALL_MATCH_NAME &&
- !strcmp(base_enabler->event_param.name, "*")) {
- int enabled = base_enabler->enabled;
- enum lttng_kernel_abi_syscall_entryexit entryexit = base_enabler->event_param.u.syscall.entryexit;
+ /* Link filter bytecodes if not linked yet. */
+ lttng_enabler_link_bytecode(event->priv->desc, lttng_static_ctx,
+ &event->priv->filter_bytecode_runtime_head, &event_enabler->filter_bytecode_head);
+}
- if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRY || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT)
- WRITE_ONCE(chan->priv->parent.syscall_table.syscall_all_entry, enabled);
+static
+void lttng_event_enabler_init_event_capture(struct lttng_event_enabler_common *event_enabler,
+ struct lttng_kernel_event_common *event)
+{
+ switch (event_enabler->enabler_type) {
+ case LTTNG_EVENT_ENABLER_TYPE_RECORDER:
+ break;
+ case LTTNG_EVENT_ENABLER_TYPE_NOTIFIER:
+ {
+ struct lttng_event_notifier_enabler *event_notifier_enabler =
+ container_of(event_enabler, struct lttng_event_notifier_enabler, parent);
+ struct lttng_kernel_event_notifier *event_notifier =
+ container_of(event, struct lttng_kernel_event_notifier, parent);
- if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_EXIT || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT)
- WRITE_ONCE(chan->priv->parent.syscall_table.syscall_all_exit, enabled);
+ /* Link capture bytecodes if not linked yet. */
+ lttng_enabler_link_bytecode(event->priv->desc,
+ lttng_static_ctx, &event_notifier->priv->capture_bytecode_runtime_head,
+ &event_notifier_enabler->capture_bytecode_head);
+ event_notifier->priv->num_captures = event_notifier_enabler->num_captures;
+ break;
}
-
- /* First ensure that probe events are created for this enabler. */
- lttng_create_event_if_missing(&event_enabler->parent);
-
- /* For each event matching event_enabler in session event list. */
- list_for_each_entry(event_recorder_priv, event_list_head, parent.node) {
- struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
- struct lttng_enabler_ref *enabler_ref;
-
- if (!lttng_event_enabler_match_event(&event_enabler->parent, &event_recorder->parent))
- continue;
- enabler_ref = lttng_enabler_ref(&event_recorder_priv->parent.enablers_ref_head,
- lttng_event_recorder_enabler_as_enabler(event_enabler));
- if (!enabler_ref) {
- /*
- * If no backward ref, create it.
- * Add backward ref from event to event_enabler.
- */
- enabler_ref = kzalloc(sizeof(*enabler_ref), GFP_KERNEL);
- if (!enabler_ref)
- return -ENOMEM;
- enabler_ref->ref = lttng_event_recorder_enabler_as_enabler(event_enabler);
- list_add(&enabler_ref->node,
- &event_recorder_priv->parent.enablers_ref_head);
- }
-
- /*
- * Link filter bytecodes if not linked yet.
- */
- lttng_enabler_link_bytecode(event_recorder_priv->parent.desc,
- lttng_static_ctx,
- &event_recorder_priv->parent.filter_bytecode_runtime_head,
- <tng_event_recorder_enabler_as_enabler(event_enabler)->filter_bytecode_head);
+ default:
+ WARN_ON_ONCE(1);
}
- return 0;
}
/*
- * Create event_notifiers associated with a event_notifier enabler (if not already present).
+ * Create events associated with an event_enabler (if not already present),
+ * and add backward reference from the event to the enabler.
+ * Should be called with sessions mutex held.
*/
static
-int lttng_event_notifier_enabler_ref_event_notifiers(
- struct lttng_event_notifier_enabler *event_notifier_enabler)
+int lttng_event_enabler_ref_events(struct lttng_event_enabler_common *event_enabler)
{
- struct lttng_event_notifier_group *event_notifier_group = event_notifier_enabler->group;
- struct lttng_event_enabler_common *base_enabler = lttng_event_notifier_enabler_as_enabler(event_notifier_enabler);
- struct lttng_kernel_event_notifier_private *event_notifier_priv;
- struct list_head *event_list_head = lttng_get_event_list_head_from_enabler(&event_notifier_enabler->parent);
-
- if (base_enabler->event_param.instrumentation == LTTNG_KERNEL_ABI_SYSCALL &&
- base_enabler->event_param.u.syscall.abi == LTTNG_KERNEL_ABI_SYSCALL_ABI_ALL &&
- base_enabler->event_param.u.syscall.match == LTTNG_KERNEL_ABI_SYSCALL_MATCH_NAME &&
- !strcmp(base_enabler->event_param.name, "*")) {
-
- int enabled = base_enabler->enabled;
- enum lttng_kernel_abi_syscall_entryexit entryexit = base_enabler->event_param.u.syscall.entryexit;
-
- if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRY || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT)
- WRITE_ONCE(event_notifier_group->syscall_table.syscall_all_entry, enabled);
-
- if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_EXIT || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT)
- WRITE_ONCE(event_notifier_group->syscall_table.syscall_all_exit, enabled);
+ struct list_head *event_list_head = lttng_get_event_list_head_from_enabler(event_enabler);
+ struct lttng_kernel_event_common_private *event_priv;
- }
+ lttng_syscall_table_set_wildcard_all(event_enabler);
- /* First ensure that probe event_notifiers are created for this enabler. */
- lttng_create_event_if_missing(&event_notifier_enabler->parent);
+ /* First ensure that probe events are created for this enabler. */
+ lttng_create_event_if_missing(event_enabler);
- /* Link the created event_notifier with its associated enabler. */
- list_for_each_entry(event_notifier_priv, event_list_head, parent.node) {
- struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
+ /* Link the created event with its associated enabler. */
+ list_for_each_entry(event_priv, event_list_head, node) {
+ struct lttng_kernel_event_common *event = event_priv->pub;
struct lttng_enabler_ref *enabler_ref;
- if (!lttng_event_enabler_match_event(&event_notifier_enabler->parent, &event_notifier->parent))
+ if (!lttng_event_enabler_match_event(event_enabler, event))
continue;
- enabler_ref = lttng_enabler_ref(&event_notifier_priv->parent.enablers_ref_head,
- lttng_event_notifier_enabler_as_enabler(event_notifier_enabler));
+ enabler_ref = lttng_enabler_ref(&event_priv->enablers_ref_head, event_enabler);
if (!enabler_ref) {
/*
* If no backward ref, create it.
if (!enabler_ref)
return -ENOMEM;
- enabler_ref->ref = lttng_event_notifier_enabler_as_enabler(
- event_notifier_enabler);
- list_add(&enabler_ref->node,
- &event_notifier_priv->parent.enablers_ref_head);
+ enabler_ref->ref = event_enabler;
+ list_add(&enabler_ref->node, &event_priv->enablers_ref_head);
}
- /*
- * Link filter bytecodes if not linked yet.
- */
- lttng_enabler_link_bytecode(event_notifier_priv->parent.desc,
- lttng_static_ctx, &event_notifier_priv->parent.filter_bytecode_runtime_head,
- <tng_event_notifier_enabler_as_enabler(event_notifier_enabler)->filter_bytecode_head);
-
- /* Link capture bytecodes if not linked yet. */
- lttng_enabler_link_bytecode(event_notifier_priv->parent.desc,
- lttng_static_ctx, &event_notifier_priv->capture_bytecode_runtime_head,
- &event_notifier_enabler->capture_bytecode_head);
-
- event_notifier_priv->num_captures = event_notifier_enabler->num_captures;
+ lttng_event_enabler_init_event_filter(event_enabler, event);
+ lttng_event_enabler_init_event_capture(event_enabler, event);
}
return 0;
}
struct lttng_kernel_event_recorder_private *event_recorder_priv;
list_for_each_entry(event_enabler, &session->priv->enablers_head, node)
- lttng_event_enabler_ref_events(event_enabler);
+ lttng_event_enabler_ref_events(&event_enabler->parent);
/*
* For each event, if at least one of its enablers is enabled,
* and its channel and session transient states are enabled, we
struct lttng_kernel_event_notifier_private *event_notifier_priv;
list_for_each_entry(event_notifier_enabler, &event_notifier_group->enablers_head, node)
- lttng_event_notifier_enabler_ref_event_notifiers(event_notifier_enabler);
+ lttng_event_enabler_ref_events(&event_notifier_enabler->parent);
/*
* For each event_notifier, if at least one of its enablers is enabled,
projects / lttng-modules.git / blobdiff