ret = lttng_syscalls_unregister_syscall_table(&chan_priv->parent.syscall_table);
WARN_ON(ret);
}
- list_for_each_entry(event_recorder_priv, &session->priv->events, node) {
+ list_for_each_entry(event_recorder_priv, &session->priv->events, parent.node) {
ret = _lttng_event_unregister(&event_recorder_priv->pub->parent);
WARN_ON(ret);
}
list_for_each_entry_safe(event_recorder_enabler, tmp_event_recorder_enabler,
&session->priv->enablers_head, node)
lttng_event_enabler_destroy(&event_recorder_enabler->parent);
- list_for_each_entry_safe(event_recorder_priv, tmpevent_recorder_priv, &session->priv->events, node)
+ list_for_each_entry_safe(event_recorder_priv, tmpevent_recorder_priv, &session->priv->events, parent.node)
_lttng_event_destroy(&event_recorder_priv->pub->parent);
list_for_each_entry_safe(chan_priv, tmpchan_priv, &session->priv->chan, node) {
BUG_ON(chan_priv->channel_type == METADATA_CHANNEL);
WARN_ON(ret);
list_for_each_entry_safe(event_notifier_priv, tmpevent_notifier_priv,
- &event_notifier_group->event_notifiers_head, node) {
+ &event_notifier_group->event_notifiers_head, parent.node) {
ret = _lttng_event_unregister(&event_notifier_priv->pub->parent);
WARN_ON(ret);
}
lttng_event_enabler_destroy(&event_notifier_enabler->parent);
list_for_each_entry_safe(event_notifier_priv, tmpevent_notifier_priv,
- &event_notifier_group->event_notifiers_head, node)
+ &event_notifier_group->event_notifiers_head, parent.node)
_lttng_event_destroy(&event_notifier_priv->pub->parent);
if (event_notifier_group->error_counter) {
chan_priv->metadata_dumped = 0;
}
- list_for_each_entry(event_recorder_priv, &session->priv->events, node) {
+ list_for_each_entry(event_recorder_priv, &session->priv->events, parent.node) {
event_recorder_priv->metadata_dumped = 0;
}
* Supports event creation while tracing session is active.
* Needs to be called with sessions mutex held.
*/
+static
struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_event_recorder_enabler *event_enabler,
const struct lttng_kernel_event_desc *event_desc)
{
module_put(event_recorder->priv->parent.desc->owner);
goto statedump_error;
}
- list_add(&event_recorder_return->priv->node, &chan->parent.session->priv->events);
+ list_add(&event_recorder_return->priv->parent.node, &chan->parent.session->priv->events);
break;
}
goto statedump_error;
}
hlist_add_head(&event_recorder->priv->parent.hlist_node, head);
- list_add(&event_recorder->priv->node, &chan->parent.session->priv->events);
+ list_add(&event_recorder->priv->parent.node, &chan->parent.session->priv->events);
return event_recorder;
statedump_error:
return ERR_PTR(ret);
}
-struct lttng_kernel_event_notifier *_lttng_event_notifier_create(struct lttng_event_notifier_enabler *event_enabler,
+static
+struct lttng_kernel_event_notifier *_lttng_kernel_event_notifier_create(struct lttng_event_notifier_enabler *event_enabler,
const struct lttng_kernel_event_desc *event_desc)
{
struct lttng_event_ht *events_ht = lttng_get_event_ht_from_enabler(&event_enabler->parent);
goto register_error;
}
- list_add(&event_notifier->priv->node, &event_notifier_group->event_notifiers_head);
+ list_add(&event_notifier->priv->parent.node, &event_notifier_group->event_notifiers_head);
hlist_add_head(&event_notifier->priv->parent.hlist_node, head);
/*
return ERR_PTR(ret);
}
+struct lttng_kernel_event_common *_lttng_kernel_event_create(struct lttng_event_enabler_common *event_enabler,
+ const struct lttng_kernel_event_desc *event_desc)
+{
+ switch (event_enabler->enabler_type) {
+ case LTTNG_EVENT_ENABLER_TYPE_RECORDER:
+ {
+ struct lttng_event_recorder_enabler *event_recorder_enabler =
+ container_of(event_enabler, struct lttng_event_recorder_enabler, parent);
+ struct lttng_kernel_event_recorder *event_recorder;
+
+ event_recorder = _lttng_kernel_event_recorder_create(event_recorder_enabler, event_desc);
+ if (!event_recorder)
+ return NULL;
+ return &event_recorder->parent;
+ }
+ 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;
+
+ event_notifier = _lttng_kernel_event_notifier_create(event_notifier_enabler, event_desc);
+ if (!event_notifier)
+ return NULL;
+ return &event_notifier->parent;
+ }
+ default:
+ return NULL;
+ }
+}
+
+struct lttng_kernel_event_common *lttng_kernel_event_create(struct lttng_event_enabler_common *event_enabler,
+ const struct lttng_kernel_event_desc *event_desc)
+{
+ struct lttng_kernel_event_common *event;
+
+ mutex_lock(&sessions_mutex);
+ event = _lttng_kernel_event_create(event_enabler, event_desc);
+ mutex_unlock(&sessions_mutex);
+ return event;
+}
+
+
+
int lttng_kernel_counter_read(struct lttng_counter *counter,
const size_t *dim_indexes, int32_t cpu,
int64_t *val, bool *overflow, bool *underflow)
return counter->ops->counter_clear(counter->counter, dim_indexes);
}
-struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_event_recorder_enabler *event_enabler,
- const struct lttng_kernel_event_desc *event_desc)
-{
- struct lttng_kernel_event_recorder *event;
-
- mutex_lock(&sessions_mutex);
- event = _lttng_kernel_event_recorder_create(event_enabler, event_desc);
- mutex_unlock(&sessions_mutex);
- return event;
-}
-
-struct lttng_kernel_event_notifier *lttng_event_notifier_create(struct lttng_event_notifier_enabler *event_enabler,
- const struct lttng_kernel_event_desc *event_desc)
-{
- struct lttng_kernel_event_notifier *event_notifier;
-
- mutex_lock(&sessions_mutex);
- event_notifier = _lttng_event_notifier_create(event_enabler, event_desc);
- mutex_unlock(&sessions_mutex);
- return event_notifier;
-}
-
/* Only used for tracepoints for now. */
static
void register_event(struct lttng_kernel_event_common *event)
default:
WARN_ON_ONCE(1);
}
- list_del(&event_recorder->priv->node);
+ list_del(&event_recorder->priv->parent.node);
kmem_cache_free(event_recorder_private_cache, event_recorder->priv);
kmem_cache_free(event_recorder_cache, event_recorder);
break;
default:
WARN_ON_ONCE(1);
}
- list_del(&event_notifier->priv->node);
+ list_del(&event_notifier->priv->parent.node);
kmem_cache_free(event_notifier_private_cache, event_notifier->priv);
kmem_cache_free(event_notifier_cache, event_notifier);
break;
return 1;
}
-int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc,
+static
+int lttng_desc_match_enabler_check(const struct lttng_kernel_event_desc *desc,
struct lttng_event_enabler_common *enabler)
{
const char *desc_name, *enabler_name;
}
}
-static
+bool lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc,
+ struct lttng_event_enabler_common *enabler)
+{
+ int ret;
+
+ ret = lttng_desc_match_enabler_check(desc, enabler);
+ if (ret < 0) {
+ WARN_ON_ONCE(1);
+ return false;
+ }
+ return ret;
+}
+
bool lttng_event_enabler_match_event(struct lttng_event_enabler_common *event_enabler,
struct lttng_kernel_event_common *event)
{
}
}
-static
bool lttng_event_enabler_desc_match_event(struct lttng_event_enabler_common *event_enabler,
const struct lttng_kernel_event_desc *desc,
struct lttng_kernel_event_common *event)
}
static
-void lttng_create_tracepoint_event_if_missing(struct lttng_event_recorder_enabler *event_enabler)
+void lttng_create_tracepoint_event_if_missing(struct lttng_event_enabler_common *event_enabler)
{
- struct lttng_event_ht *events_ht = lttng_get_event_ht_from_enabler(&event_enabler->parent);
+ struct lttng_event_ht *events_ht = lttng_get_event_ht_from_enabler(event_enabler);
struct lttng_kernel_probe_desc *probe_desc;
const struct lttng_kernel_event_desc *desc;
- int i;
struct list_head *probe_list;
+ int i;
probe_list = lttng_get_probe_list_head();
/*
for (i = 0; i < probe_desc->nr_events; i++) {
int found = 0;
struct hlist_head *head;
- struct lttng_kernel_event_recorder *event_recorder;
+ struct lttng_kernel_event_common *event;
struct lttng_kernel_event_common_private *event_priv;
desc = probe_desc->event_desc[i];
- if (!lttng_desc_match_enabler(desc,
- lttng_event_recorder_enabler_as_enabler(event_enabler)))
+ if (!lttng_desc_match_enabler(desc, event_enabler))
continue;
/*
*/
head = utils_borrow_hash_table_bucket(events_ht->table, LTTNG_EVENT_HT_SIZE, desc->event_name);
lttng_hlist_for_each_entry(event_priv, head, hlist_node) {
- if (lttng_event_enabler_desc_match_event(&event_enabler->parent, desc, event_priv->pub))
+ if (lttng_event_enabler_desc_match_event(event_enabler, desc, event_priv->pub))
found = 1;
}
if (found)
continue;
/*
- * We need to create an event for this
- * event probe.
+ * We need to create an event for this event probe.
*/
- event_recorder = _lttng_kernel_event_recorder_create(event_enabler, desc);
- if (!event_recorder) {
+ event = _lttng_kernel_event_create(event_enabler, desc);
+ if (!event) {
printk(KERN_INFO "LTTng: Unable to create event %s\n",
probe_desc->event_desc[i]->event_name);
}
}
}
-static
-void lttng_create_tracepoint_event_notifier_if_missing(struct lttng_event_notifier_enabler *event_notifier_enabler)
-{
- struct lttng_event_ht *events_ht = lttng_get_event_ht_from_enabler(&event_notifier_enabler->parent);
- struct lttng_kernel_probe_desc *probe_desc;
- const struct lttng_kernel_event_desc *desc;
- int i;
- struct list_head *probe_list;
-
- probe_list = lttng_get_probe_list_head();
- /*
- * For each probe event, if we find that a probe event matches
- * our enabler, create an associated lttng_event_notifier if not
- * already present.
- */
- list_for_each_entry(probe_desc, probe_list, head) {
- for (i = 0; i < probe_desc->nr_events; i++) {
- int found = 0;
- struct hlist_head *head;
- struct lttng_kernel_event_notifier *event_notifier;
- struct lttng_kernel_event_common_private *event_priv;
-
- desc = probe_desc->event_desc[i];
- if (!lttng_desc_match_enabler(desc,
- lttng_event_notifier_enabler_as_enabler(event_notifier_enabler)))
- continue;
-
- /*
- * Check if already created.
- */
- head = utils_borrow_hash_table_bucket(events_ht->table,
- LTTNG_EVENT_HT_SIZE, desc->event_name);
- lttng_hlist_for_each_entry(event_priv, head, hlist_node) {
- if (lttng_event_enabler_desc_match_event(&event_notifier_enabler->parent, desc, event_priv->pub))
- found = 1;
- }
- if (found)
- continue;
-
- /*
- * We need to create a event_notifier for this event probe.
- */
- event_notifier = _lttng_event_notifier_create(event_notifier_enabler, desc);
- if (IS_ERR(event_notifier)) {
- printk(KERN_INFO "Unable to create event_notifier %s\n",
- probe_desc->event_desc[i]->event_name);
- }
- }
- }
-}
-
static
void lttng_create_syscall_event_if_missing(struct lttng_event_enabler_common *event_enabler)
{
}
/*
- * Create struct lttng_kernel_event_recorder if it is missing and present in the list of
- * tracepoint probes.
+ * Create event if it is missing and present in the list of tracepoint probes.
* Should be called with sessions mutex held.
*/
static
-void lttng_create_event_if_missing(struct lttng_event_recorder_enabler *event_enabler)
+void lttng_create_event_if_missing(struct lttng_event_enabler_common *event_enabler)
{
- switch (event_enabler->parent.event_param.instrumentation) {
+ switch (event_enabler->event_param.instrumentation) {
case LTTNG_KERNEL_ABI_TRACEPOINT:
lttng_create_tracepoint_event_if_missing(event_enabler);
break;
case LTTNG_KERNEL_ABI_SYSCALL:
- lttng_create_syscall_event_if_missing(&event_enabler->parent);
+ lttng_create_syscall_event_if_missing(event_enabler);
break;
default:
}
}
+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);
+
+ /* 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;
+ }
+ default:
+ WARN_ON_ONCE(1);
+ }
+}
+
/*
* Create events associated with an event_enabler (if not already present),
* and add backward reference from the event to the enabler.
static
int lttng_event_enabler_ref_events(struct lttng_event_recorder_enabler *event_enabler)
{
- struct lttng_kernel_channel_buffer *chan = event_enabler->chan;
- struct lttng_kernel_session *session = event_enabler->chan->parent.session;
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;
-
- if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRY || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT)
- WRITE_ONCE(chan->priv->parent.syscall_table.syscall_all_entry, enabled);
-
- if (entryexit == LTTNG_KERNEL_ABI_SYSCALL_EXIT || entryexit == LTTNG_KERNEL_ABI_SYSCALL_ENTRYEXIT)
- WRITE_ONCE(chan->priv->parent.syscall_table.syscall_all_exit, enabled);
- }
+ lttng_syscall_table_set_wildcard_all(base_enabler);
/* First ensure that probe events are created for this enabler. */
- lttng_create_event_if_missing(event_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, &session->priv->events, node) {
+ 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;
return 0;
}
-/*
- * Create struct lttng_kernel_event_notifier if it is missing and present in the list of
- * tracepoint probes.
- * Should be called with sessions mutex held.
- */
-static
-void lttng_create_event_notifier_if_missing(struct lttng_event_notifier_enabler *event_notifier_enabler)
-{
- switch (event_notifier_enabler->parent.event_param.instrumentation) {
- case LTTNG_KERNEL_ABI_TRACEPOINT:
- lttng_create_tracepoint_event_notifier_if_missing(event_notifier_enabler);
- break;
-
- case LTTNG_KERNEL_ABI_SYSCALL:
- lttng_create_syscall_event_if_missing(&event_notifier_enabler->parent);
- break;
-
- default:
- WARN_ON_ONCE(1);
- break;
- }
-}
-
/*
* Create event_notifiers associated with a event_notifier enabler (if not already present).
*/
int lttng_event_notifier_enabler_ref_event_notifiers(
struct lttng_event_notifier_enabler *event_notifier_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);
-
- }
+ lttng_syscall_table_set_wildcard_all(&event_notifier_enabler->parent);
/* First ensure that probe event_notifiers are created for this enabler. */
- lttng_create_event_notifier_if_missing(event_notifier_enabler);
+ lttng_create_event_if_missing(&event_notifier_enabler->parent);
/* Link the created event_notifier with its associated enabler. */
- list_for_each_entry(event_notifier_priv, &event_notifier_group->event_notifiers_head, node) {
+ list_for_each_entry(event_notifier_priv, event_list_head, parent.node) {
struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
struct lttng_enabler_ref *enabler_ref;
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_capture(&event_notifier_enabler->parent, &event_notifier->parent);
}
return 0;
}
* and its channel and session transient states are enabled, we
* enable the event, else we disable it.
*/
- list_for_each_entry(event_recorder_priv, &session->priv->events, node) {
+ list_for_each_entry(event_recorder_priv, &session->priv->events, parent.node) {
struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
struct lttng_enabler_ref *enabler_ref;
struct lttng_kernel_bytecode_runtime *runtime;
* For each event_notifier, if at least one of its enablers is enabled,
* we enable the event_notifier, else we disable it.
*/
- list_for_each_entry(event_notifier_priv, &event_notifier_group->event_notifiers_head, node) {
+ list_for_each_entry(event_notifier_priv, &event_notifier_group->event_notifiers_head, parent.node) {
struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
struct lttng_enabler_ref *enabler_ref;
struct lttng_kernel_bytecode_runtime *runtime;
goto end;
}
- list_for_each_entry(event_recorder_priv, &session->priv->events, node) {
+ list_for_each_entry(event_recorder_priv, &session->priv->events, parent.node) {
ret = _lttng_event_metadata_statedump(session, event_recorder_priv->pub->chan,
event_recorder_priv->pub);
if (ret)
projects / lttng-modules.git / blobdiff