#include <linux/vmalloc.h>
#include <linux/dmi.h>
+#include <wrapper/compiler_attributes.h>
#include <wrapper/uuid.h>
#include <wrapper/vmalloc.h> /* for wrapper_vmalloc_sync_mappings() */
#include <wrapper/random.h>
static struct kmem_cache *event_notifier_cache;
static struct kmem_cache *event_notifier_private_cache;
-static void lttng_session_lazy_sync_event_enablers(struct lttng_session *session);
-static void lttng_session_sync_event_enablers(struct lttng_session *session);
-static void lttng_event_enabler_destroy(struct lttng_event_enabler *event_enabler);
-static void lttng_event_notifier_enabler_destroy(struct lttng_event_notifier_enabler *event_notifier_enabler);
+static void lttng_session_lazy_sync_event_enablers(struct lttng_kernel_session *session);
+static void lttng_session_sync_event_enablers(struct lttng_kernel_session *session);
static void lttng_event_notifier_group_sync_enablers(struct lttng_event_notifier_group *event_notifier_group);
+static void lttng_event_enabler_sync(struct lttng_event_enabler_common *event_enabler);
static void _lttng_event_destroy(struct lttng_kernel_event_common *event);
-static void _lttng_channel_destroy(struct lttng_channel *chan);
-static int _lttng_event_unregister(struct lttng_kernel_event_recorder *event);
+static void _lttng_channel_destroy(struct lttng_kernel_channel_buffer *chan);
+static int _lttng_event_recorder_unregister(struct lttng_kernel_event_recorder *event);
static int _lttng_event_notifier_unregister(struct lttng_kernel_event_notifier *event_notifier);
static
-int _lttng_event_metadata_statedump(struct lttng_session *session,
- struct lttng_channel *chan,
+int _lttng_event_metadata_statedump(struct lttng_kernel_session *session,
+ struct lttng_kernel_channel_buffer *chan,
struct lttng_kernel_event_recorder *event);
static
-int _lttng_session_metadata_statedump(struct lttng_session *session);
+int _lttng_session_metadata_statedump(struct lttng_kernel_session *session);
static
void _lttng_metadata_channel_hangup(struct lttng_metadata_stream *stream);
static
-int _lttng_type_statedump(struct lttng_session *session,
+int _lttng_type_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_type_common *type,
enum lttng_kernel_string_encoding parent_encoding,
size_t nesting);
static
-int _lttng_field_statedump(struct lttng_session *session,
+int _lttng_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
- size_t nesting);
+ size_t nesting, const char **prev_field_name_p);
void synchronize_trace(void)
{
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,1,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,1,0) || \
+ LTTNG_RHEL_KERNEL_RANGE(4,18,0,193,0,0, 4,19,0,0,0,0))
synchronize_rcu();
#else
synchronize_sched();
*/
int lttng_session_active(void)
{
- struct lttng_session *iter;
+ struct lttng_kernel_session_private *iter;
list_for_each_entry(iter, &sessions, list) {
- if (iter->active)
+ if (iter->pub->active)
return 1;
}
return 0;
}
-struct lttng_session *lttng_session_create(void)
+struct lttng_kernel_session *lttng_session_create(void)
{
- struct lttng_session *session;
+ struct lttng_kernel_session *session;
+ struct lttng_kernel_session_private *session_priv;
struct lttng_metadata_cache *metadata_cache;
int i;
mutex_lock(&sessions_mutex);
- session = lttng_kvzalloc(sizeof(struct lttng_session), GFP_KERNEL);
+ session = lttng_kvzalloc(sizeof(*session), GFP_KERNEL);
if (!session)
goto err;
- INIT_LIST_HEAD(&session->chan);
- INIT_LIST_HEAD(&session->events);
- lttng_guid_gen(&session->uuid);
+ session_priv = lttng_kvzalloc(sizeof(*session_priv), GFP_KERNEL);
+ if (!session_priv)
+ goto err_free_session;
+ session->priv = session_priv;
+ session_priv->pub = session;
+
+ INIT_LIST_HEAD(&session_priv->chan);
+ INIT_LIST_HEAD(&session_priv->events);
+ lttng_guid_gen(&session_priv->uuid);
metadata_cache = kzalloc(sizeof(struct lttng_metadata_cache),
GFP_KERNEL);
if (!metadata_cache)
- goto err_free_session;
+ goto err_free_session_private;
metadata_cache->data = vzalloc(METADATA_CACHE_DEFAULT_SIZE);
if (!metadata_cache->data)
goto err_free_cache;
metadata_cache->cache_alloc = METADATA_CACHE_DEFAULT_SIZE;
kref_init(&metadata_cache->refcount);
mutex_init(&metadata_cache->lock);
- session->metadata_cache = metadata_cache;
+ session_priv->metadata_cache = metadata_cache;
INIT_LIST_HEAD(&metadata_cache->metadata_stream);
- memcpy(&metadata_cache->uuid, &session->uuid,
+ memcpy(&metadata_cache->uuid, &session_priv->uuid,
sizeof(metadata_cache->uuid));
- INIT_LIST_HEAD(&session->enablers_head);
+ INIT_LIST_HEAD(&session_priv->enablers_head);
for (i = 0; i < LTTNG_EVENT_HT_SIZE; i++)
- INIT_HLIST_HEAD(&session->events_ht.table[i]);
- list_add(&session->list, &sessions);
- session->pid_tracker.session = session;
- session->pid_tracker.tracker_type = TRACKER_PID;
- session->vpid_tracker.session = session;
- session->vpid_tracker.tracker_type = TRACKER_VPID;
- session->uid_tracker.session = session;
- session->uid_tracker.tracker_type = TRACKER_UID;
- session->vuid_tracker.session = session;
- session->vuid_tracker.tracker_type = TRACKER_VUID;
- session->gid_tracker.session = session;
- session->gid_tracker.tracker_type = TRACKER_GID;
- session->vgid_tracker.session = session;
- session->vgid_tracker.tracker_type = TRACKER_VGID;
+ INIT_HLIST_HEAD(&session_priv->events_ht.table[i]);
+ list_add(&session_priv->list, &sessions);
+
+ if (lttng_id_tracker_init(&session->pid_tracker, session, TRACKER_PID))
+ goto tracker_alloc_error;
+ if (lttng_id_tracker_init(&session->vpid_tracker, session, TRACKER_VPID))
+ goto tracker_alloc_error;
+ if (lttng_id_tracker_init(&session->uid_tracker, session, TRACKER_UID))
+ goto tracker_alloc_error;
+ if (lttng_id_tracker_init(&session->vuid_tracker, session, TRACKER_VUID))
+ goto tracker_alloc_error;
+ if (lttng_id_tracker_init(&session->gid_tracker, session, TRACKER_GID))
+ goto tracker_alloc_error;
+ if (lttng_id_tracker_init(&session->vgid_tracker, session, TRACKER_VGID))
+ goto tracker_alloc_error;
+
mutex_unlock(&sessions_mutex);
+
return session;
+tracker_alloc_error:
+ lttng_id_tracker_fini(&session->pid_tracker);
+ lttng_id_tracker_fini(&session->vpid_tracker);
+ lttng_id_tracker_fini(&session->uid_tracker);
+ lttng_id_tracker_fini(&session->vuid_tracker);
+ lttng_id_tracker_fini(&session->gid_tracker);
+ lttng_id_tracker_fini(&session->vgid_tracker);
err_free_cache:
kfree(metadata_cache);
+err_free_session_private:
+ lttng_kvfree(session_priv);
err_free_session:
lttng_kvfree(session);
err:
* notifications.
*/
event_notifier_group->ops = &transport->ops;
- event_notifier_group->chan = transport->ops.channel_create(
+ event_notifier_group->chan = transport->ops.priv->channel_create(
transport_name, event_notifier_group, NULL,
subbuf_size, num_subbuf, switch_timer_interval,
read_timer_interval);
kfree(cache);
}
-void lttng_session_destroy(struct lttng_session *session)
+void lttng_session_destroy(struct lttng_kernel_session *session)
{
- struct lttng_channel *chan, *tmpchan;
+ struct lttng_kernel_channel_buffer_private *chan_priv, *tmpchan_priv;
struct lttng_kernel_event_recorder_private *event_recorder_priv, *tmpevent_recorder_priv;
struct lttng_metadata_stream *metadata_stream;
- struct lttng_event_enabler *event_enabler, *tmp_event_enabler;
+ struct lttng_event_recorder_enabler *event_recorder_enabler, *tmp_event_recorder_enabler;
int ret;
mutex_lock(&sessions_mutex);
WRITE_ONCE(session->active, 0);
- list_for_each_entry(chan, &session->chan, list) {
- ret = lttng_syscalls_unregister_channel(chan);
+ list_for_each_entry(chan_priv, &session->priv->chan, node) {
+ ret = lttng_syscalls_unregister_syscall_table(&chan_priv->parent.syscall_table);
WARN_ON(ret);
}
- list_for_each_entry(event_recorder_priv, &session->events, node) {
- ret = _lttng_event_unregister(event_recorder_priv->pub);
+ list_for_each_entry(event_recorder_priv, &session->priv->events, node) {
+ ret = _lttng_event_recorder_unregister(event_recorder_priv->pub);
WARN_ON(ret);
}
synchronize_trace(); /* Wait for in-flight events to complete */
- list_for_each_entry(chan, &session->chan, list) {
- ret = lttng_syscalls_destroy_event(chan);
+ list_for_each_entry(chan_priv, &session->priv->chan, node) {
+ ret = lttng_syscalls_destroy_syscall_table(&chan_priv->parent.syscall_table);
WARN_ON(ret);
}
- list_for_each_entry_safe(event_enabler, tmp_event_enabler,
- &session->enablers_head, node)
- lttng_event_enabler_destroy(event_enabler);
- list_for_each_entry_safe(event_recorder_priv, tmpevent_recorder_priv, &session->events, node)
+ 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)
_lttng_event_destroy(&event_recorder_priv->pub->parent);
- list_for_each_entry_safe(chan, tmpchan, &session->chan, list) {
- BUG_ON(chan->channel_type == METADATA_CHANNEL);
- _lttng_channel_destroy(chan);
+ list_for_each_entry_safe(chan_priv, tmpchan_priv, &session->priv->chan, node) {
+ BUG_ON(chan_priv->channel_type == METADATA_CHANNEL);
+ _lttng_channel_destroy(chan_priv->pub);
}
- mutex_lock(&session->metadata_cache->lock);
- list_for_each_entry(metadata_stream, &session->metadata_cache->metadata_stream, list)
+ mutex_lock(&session->priv->metadata_cache->lock);
+ list_for_each_entry(metadata_stream, &session->priv->metadata_cache->metadata_stream, list)
_lttng_metadata_channel_hangup(metadata_stream);
- mutex_unlock(&session->metadata_cache->lock);
- lttng_id_tracker_destroy(&session->pid_tracker, false);
- lttng_id_tracker_destroy(&session->vpid_tracker, false);
- lttng_id_tracker_destroy(&session->uid_tracker, false);
- lttng_id_tracker_destroy(&session->vuid_tracker, false);
- lttng_id_tracker_destroy(&session->gid_tracker, false);
- lttng_id_tracker_destroy(&session->vgid_tracker, false);
- kref_put(&session->metadata_cache->refcount, metadata_cache_destroy);
- list_del(&session->list);
+ mutex_unlock(&session->priv->metadata_cache->lock);
+ lttng_id_tracker_fini(&session->pid_tracker);
+ lttng_id_tracker_fini(&session->vpid_tracker);
+ lttng_id_tracker_fini(&session->uid_tracker);
+ lttng_id_tracker_fini(&session->vuid_tracker);
+ lttng_id_tracker_fini(&session->gid_tracker);
+ lttng_id_tracker_fini(&session->vgid_tracker);
+ kref_put(&session->priv->metadata_cache->refcount, metadata_cache_destroy);
+ list_del(&session->priv->list);
mutex_unlock(&sessions_mutex);
+ lttng_kvfree(session->priv);
lttng_kvfree(session);
}
mutex_lock(&sessions_mutex);
- ret = lttng_syscalls_unregister_event_notifier_group(event_notifier_group);
+ ret = lttng_syscalls_unregister_syscall_table(&event_notifier_group->syscall_table);
WARN_ON(ret);
list_for_each_entry_safe(event_notifier_priv, tmpevent_notifier_priv,
irq_work_sync(&event_notifier_group->wakeup_pending);
- kfree(event_notifier_group->sc_filter);
+ ret = lttng_syscalls_destroy_syscall_table(&event_notifier_group->syscall_table);
+ WARN_ON(ret);
list_for_each_entry_safe(event_notifier_enabler, tmp_event_notifier_enabler,
&event_notifier_group->enablers_head, node)
- lttng_event_notifier_enabler_destroy(event_notifier_enabler);
+ 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->error_counter = NULL;
}
- event_notifier_group->ops->channel_destroy(event_notifier_group->chan);
+ event_notifier_group->ops->priv->channel_destroy(event_notifier_group->chan);
module_put(event_notifier_group->transport->owner);
list_del(&event_notifier_group->node);
lttng_kvfree(event_notifier_group);
}
-int lttng_session_statedump(struct lttng_session *session)
+int lttng_session_statedump(struct lttng_kernel_session *session)
{
int ret;
return ret;
}
-int lttng_session_enable(struct lttng_session *session)
+int lttng_session_enable(struct lttng_kernel_session *session)
{
int ret = 0;
- struct lttng_channel *chan;
+ struct lttng_kernel_channel_buffer_private *chan_priv;
mutex_lock(&sessions_mutex);
if (session->active) {
}
/* Set transient enabler state to "enabled" */
- session->tstate = 1;
+ session->priv->tstate = 1;
/* We need to sync enablers with session before activation. */
lttng_session_sync_event_enablers(session);
* Snapshot the number of events per channel to know the type of header
* we need to use.
*/
- list_for_each_entry(chan, &session->chan, list) {
- if (chan->header_type)
- continue; /* don't change it if session stop/restart */
- if (chan->free_event_id < 31)
- chan->header_type = 1; /* compact */
+ list_for_each_entry(chan_priv, &session->priv->chan, node) {
+ if (chan_priv->header_type)
+ continue; /* don't change it if session stop/restart */
+ if (chan_priv->free_event_id < 31)
+ chan_priv->header_type = 1; /* compact */
else
- chan->header_type = 2; /* large */
+ chan_priv->header_type = 2; /* large */
}
/* Clear each stream's quiescent state. */
- list_for_each_entry(chan, &session->chan, list) {
- if (chan->channel_type != METADATA_CHANNEL)
- lib_ring_buffer_clear_quiescent_channel(chan->chan);
+ list_for_each_entry(chan_priv, &session->priv->chan, node) {
+ if (chan_priv->channel_type != METADATA_CHANNEL)
+ lib_ring_buffer_clear_quiescent_channel(chan_priv->rb_chan);
}
WRITE_ONCE(session->active, 1);
- WRITE_ONCE(session->been_active, 1);
+ WRITE_ONCE(session->priv->been_active, 1);
ret = _lttng_session_metadata_statedump(session);
if (ret) {
WRITE_ONCE(session->active, 0);
return ret;
}
-int lttng_session_disable(struct lttng_session *session)
+int lttng_session_disable(struct lttng_kernel_session *session)
{
int ret = 0;
- struct lttng_channel *chan;
+ struct lttng_kernel_channel_buffer_private *chan_priv;
mutex_lock(&sessions_mutex);
if (!session->active) {
WRITE_ONCE(session->active, 0);
/* Set transient enabler state to "disabled" */
- session->tstate = 0;
+ session->priv->tstate = 0;
lttng_session_sync_event_enablers(session);
/* Set each stream's quiescent state. */
- list_for_each_entry(chan, &session->chan, list) {
- if (chan->channel_type != METADATA_CHANNEL)
- lib_ring_buffer_set_quiescent_channel(chan->chan);
+ list_for_each_entry(chan_priv, &session->priv->chan, node) {
+ if (chan_priv->channel_type != METADATA_CHANNEL)
+ lib_ring_buffer_set_quiescent_channel(chan_priv->rb_chan);
}
end:
mutex_unlock(&sessions_mutex);
return ret;
}
-int lttng_session_metadata_regenerate(struct lttng_session *session)
+int lttng_session_metadata_regenerate(struct lttng_kernel_session *session)
{
int ret = 0;
- struct lttng_channel *chan;
+ struct lttng_kernel_channel_buffer_private *chan_priv;
struct lttng_kernel_event_recorder_private *event_recorder_priv;
- struct lttng_metadata_cache *cache = session->metadata_cache;
+ struct lttng_metadata_cache *cache = session->priv->metadata_cache;
struct lttng_metadata_stream *stream;
mutex_lock(&sessions_mutex);
memset(cache->data, 0, cache->cache_alloc);
cache->metadata_written = 0;
cache->version++;
- list_for_each_entry(stream, &session->metadata_cache->metadata_stream, list) {
+ list_for_each_entry(stream, &session->priv->metadata_cache->metadata_stream, list) {
stream->metadata_out = 0;
stream->metadata_in = 0;
}
mutex_unlock(&cache->lock);
- session->metadata_dumped = 0;
- list_for_each_entry(chan, &session->chan, list) {
- chan->metadata_dumped = 0;
+ session->priv->metadata_dumped = 0;
+ list_for_each_entry(chan_priv, &session->priv->chan, node) {
+ chan_priv->metadata_dumped = 0;
}
- list_for_each_entry(event_recorder_priv, &session->events, node) {
+ list_for_each_entry(event_recorder_priv, &session->priv->events, node) {
event_recorder_priv->metadata_dumped = 0;
}
return ret;
}
-int lttng_channel_enable(struct lttng_channel *channel)
+static
+bool is_channel_buffer_metadata(struct lttng_kernel_channel_common *channel)
+{
+ struct lttng_kernel_channel_buffer *chan_buf;
+
+ if (channel->type != LTTNG_KERNEL_CHANNEL_TYPE_BUFFER)
+ return false;
+ chan_buf = container_of(channel, struct lttng_kernel_channel_buffer, parent);
+ if (chan_buf->priv->channel_type == METADATA_CHANNEL)
+ return true;
+ return false;
+}
+
+int lttng_channel_enable(struct lttng_kernel_channel_common *channel)
{
int ret = 0;
mutex_lock(&sessions_mutex);
- if (channel->channel_type == METADATA_CHANNEL) {
+ if (is_channel_buffer_metadata(channel)) {
ret = -EPERM;
goto end;
}
goto end;
}
/* Set transient enabler state to "enabled" */
- channel->tstate = 1;
+ channel->priv->tstate = 1;
lttng_session_sync_event_enablers(channel->session);
/* Set atomically the state to "enabled" */
WRITE_ONCE(channel->enabled, 1);
return ret;
}
-int lttng_channel_disable(struct lttng_channel *channel)
+int lttng_channel_disable(struct lttng_kernel_channel_common *channel)
{
int ret = 0;
mutex_lock(&sessions_mutex);
- if (channel->channel_type == METADATA_CHANNEL) {
+ if (is_channel_buffer_metadata(channel)) {
ret = -EPERM;
goto end;
}
/* Set atomically the state to "disabled" */
WRITE_ONCE(channel->enabled, 0);
/* Set transient enabler state to "enabled" */
- channel->tstate = 0;
+ channel->priv->tstate = 0;
lttng_session_sync_event_enablers(channel->session);
end:
mutex_unlock(&sessions_mutex);
return ret;
}
-int lttng_event_enable(struct lttng_kernel_event_recorder *event_recorder)
+int lttng_event_enable(struct lttng_kernel_event_common *event)
{
- struct lttng_kernel_event_common *event = &event_recorder->parent;
int ret = 0;
mutex_lock(&sessions_mutex);
- if (event_recorder->chan->channel_type == METADATA_CHANNEL) {
- ret = -EPERM;
- goto end;
- }
- if (event->enabled) {
- ret = -EEXIST;
- goto end;
- }
- switch (event->priv->instrumentation) {
- case LTTNG_KERNEL_ABI_TRACEPOINT: /* Fall-through */
- case LTTNG_KERNEL_ABI_SYSCALL:
- ret = -EINVAL;
- break;
+ switch (event->type) {
+ case LTTNG_KERNEL_EVENT_TYPE_RECORDER:
+ {
+ struct lttng_kernel_event_recorder *event_recorder =
+ container_of(event, struct lttng_kernel_event_recorder, parent);
- case LTTNG_KERNEL_ABI_KPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_UPROBE:
- WRITE_ONCE(event->enabled, 1);
+ if (event_recorder->chan->priv->channel_type == METADATA_CHANNEL) {
+ ret = -EPERM;
+ goto end;
+ }
break;
-
- case LTTNG_KERNEL_ABI_KRETPROBE:
- ret = lttng_kretprobes_event_enable_state(&event_recorder->parent, 1);
+ }
+ case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER:
+ switch (event->priv->instrumentation) {
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ ret = -EINVAL;
+ goto end;
+ default:
+ break;
+ }
break;
-
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
default:
- WARN_ON_ONCE(1);
- ret = -EINVAL;
+ break;
}
-end:
- mutex_unlock(&sessions_mutex);
- return ret;
-}
-int lttng_event_disable(struct lttng_kernel_event_recorder *event_recorder)
-{
- struct lttng_kernel_event_common *event = &event_recorder->parent;
- int ret = 0;
-
- mutex_lock(&sessions_mutex);
- if (event_recorder->chan->channel_type == METADATA_CHANNEL) {
- ret = -EPERM;
- goto end;
- }
- if (!event->enabled) {
+ if (event->enabled) {
ret = -EEXIST;
goto end;
}
switch (event->priv->instrumentation) {
- case LTTNG_KERNEL_ABI_TRACEPOINT: /* Fall-through */
+ case LTTNG_KERNEL_ABI_TRACEPOINT:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_SYSCALL:
ret = -EINVAL;
break;
- case LTTNG_KERNEL_ABI_KPROBE: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KPROBE:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_UPROBE:
- WRITE_ONCE(event->enabled, 0);
+ WRITE_ONCE(event->enabled, 1);
break;
case LTTNG_KERNEL_ABI_KRETPROBE:
-
- ret = lttng_kretprobes_event_enable_state(&event_recorder->parent, 0);
+ ret = lttng_kretprobes_event_enable_state(event, 1);
break;
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
ret = -EINVAL;
return ret;
}
-int lttng_event_notifier_enable(struct lttng_kernel_event_notifier *event_notifier)
+int lttng_event_disable(struct lttng_kernel_event_common *event)
{
- struct lttng_kernel_event_common *event = &event_notifier->parent;
int ret = 0;
mutex_lock(&sessions_mutex);
- if (event->enabled) {
- ret = -EEXIST;
- goto end;
- }
- switch (event->priv->instrumentation) {
- case LTTNG_KERNEL_ABI_TRACEPOINT: /* Fall-through */
- case LTTNG_KERNEL_ABI_SYSCALL:
- ret = -EINVAL;
- break;
+ switch (event->type) {
+ case LTTNG_KERNEL_EVENT_TYPE_RECORDER:
+ {
+ struct lttng_kernel_event_recorder *event_recorder =
+ container_of(event, struct lttng_kernel_event_recorder, parent);
- case LTTNG_KERNEL_ABI_KPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_UPROBE:
- WRITE_ONCE(event->enabled, 1);
+ if (event_recorder->chan->priv->channel_type == METADATA_CHANNEL) {
+ ret = -EPERM;
+ goto end;
+ }
+ break;
+ }
+ case LTTNG_KERNEL_EVENT_TYPE_NOTIFIER:
+ switch (event->priv->instrumentation) {
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ ret = -EINVAL;
+ goto end;
+ default:
+ break;
+ }
break;
-
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_KRETPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
default:
- WARN_ON_ONCE(1);
- ret = -EINVAL;
+ break;
}
-end:
- mutex_unlock(&sessions_mutex);
- return ret;
-}
-int lttng_event_notifier_disable(struct lttng_kernel_event_notifier *event_notifier)
-{
- struct lttng_kernel_event_common *event = &event_notifier->parent;
- int ret = 0;
-
- mutex_lock(&sessions_mutex);
if (!event->enabled) {
ret = -EEXIST;
goto end;
}
switch (event->priv->instrumentation) {
- case LTTNG_KERNEL_ABI_TRACEPOINT: /* Fall-through */
+ case LTTNG_KERNEL_ABI_TRACEPOINT:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_SYSCALL:
ret = -EINVAL;
break;
- case LTTNG_KERNEL_ABI_KPROBE: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KPROBE:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_UPROBE:
WRITE_ONCE(event->enabled, 0);
break;
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_KRETPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ ret = lttng_kretprobes_event_enable_state(event, 0);
+ break;
+
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
ret = -EINVAL;
return ret;
}
-struct lttng_channel *lttng_channel_create(struct lttng_session *session,
+struct lttng_kernel_channel_buffer *lttng_channel_buffer_create(struct lttng_kernel_session *session,
const char *transport_name,
void *buf_addr,
size_t subbuf_size, size_t num_subbuf,
unsigned int read_timer_interval,
enum channel_type channel_type)
{
- struct lttng_channel *chan;
+ struct lttng_kernel_channel_buffer *chan;
+ struct lttng_kernel_channel_buffer_private *chan_priv;
struct lttng_transport *transport = NULL;
mutex_lock(&sessions_mutex);
- if (session->been_active && channel_type != METADATA_CHANNEL)
+ if (session->priv->been_active && channel_type != METADATA_CHANNEL)
goto active; /* Refuse to add channel to active session */
transport = lttng_transport_find(transport_name);
if (!transport) {
printk(KERN_WARNING "LTTng: Can't lock transport module.\n");
goto notransport;
}
- chan = kzalloc(sizeof(struct lttng_channel), GFP_KERNEL);
+ chan = kzalloc(sizeof(struct lttng_kernel_channel_buffer), GFP_KERNEL);
if (!chan)
goto nomem;
- chan->session = session;
- chan->id = session->free_chan_id++;
+ chan_priv = kzalloc(sizeof(struct lttng_kernel_channel_buffer_private), GFP_KERNEL);
+ if (!chan_priv)
+ goto nomem_priv;
+ chan->priv = chan_priv;
+ chan_priv->pub = chan;
+ chan->parent.type = LTTNG_KERNEL_CHANNEL_TYPE_BUFFER;
+ chan->parent.session = session;
+ chan->priv->id = session->priv->free_chan_id++;
chan->ops = &transport->ops;
/*
* Note: the channel creation op already writes into the packet
* headers. Therefore the "chan" information used as input
* should be already accessible.
*/
- chan->chan = transport->ops.channel_create(transport_name,
+ chan->priv->rb_chan = transport->ops.priv->channel_create(transport_name,
chan, buf_addr, subbuf_size, num_subbuf,
switch_timer_interval, read_timer_interval);
- if (!chan->chan)
+ if (!chan->priv->rb_chan)
goto create_error;
- chan->tstate = 1;
- chan->enabled = 1;
- chan->transport = transport;
- chan->channel_type = channel_type;
- list_add(&chan->list, &session->chan);
+ chan->priv->parent.tstate = 1;
+ chan->parent.enabled = 1;
+ chan->priv->transport = transport;
+ chan->priv->channel_type = channel_type;
+ list_add(&chan->priv->node, &session->priv->chan);
mutex_unlock(&sessions_mutex);
return chan;
create_error:
+ kfree(chan_priv);
+nomem_priv:
kfree(chan);
nomem:
if (transport)
* Needs to be called with sessions mutex held.
*/
static
-void _lttng_channel_destroy(struct lttng_channel *chan)
+void _lttng_channel_destroy(struct lttng_kernel_channel_buffer *chan)
{
- chan->ops->channel_destroy(chan->chan);
- module_put(chan->transport->owner);
- list_del(&chan->list);
- lttng_kernel_destroy_context(chan->ctx);
+ chan->ops->priv->channel_destroy(chan->priv->rb_chan);
+ module_put(chan->priv->transport->owner);
+ list_del(&chan->priv->node);
+ lttng_kernel_destroy_context(chan->priv->ctx);
+ kfree(chan->priv);
kfree(chan);
}
-void lttng_metadata_channel_destroy(struct lttng_channel *chan)
+void lttng_metadata_channel_destroy(struct lttng_kernel_channel_buffer *chan)
{
- BUG_ON(chan->channel_type != METADATA_CHANNEL);
+ BUG_ON(chan->priv->channel_type != METADATA_CHANNEL);
/* Protect the metadata cache with the sessions_mutex. */
mutex_lock(&sessions_mutex);
* Supports event creation while tracing session is active.
* Needs to be called with sessions mutex held.
*/
-struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_channel *chan,
- struct lttng_kernel_abi_event *event_param,
- const struct lttng_kernel_event_desc *event_desc,
- enum lttng_kernel_abi_instrumentation itype)
+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_session *session = chan->session;
+ struct lttng_kernel_channel_buffer *chan = event_enabler->chan;
+ struct lttng_kernel_abi_event *event_param = &event_enabler->parent.event_param;
+ enum lttng_kernel_abi_instrumentation itype = event_param->instrumentation;
+ struct lttng_kernel_session *session = chan->parent.session;
struct lttng_kernel_event_recorder *event_recorder;
struct lttng_kernel_event_recorder_private *event_recorder_priv;
const char *event_name;
struct hlist_head *head;
int ret;
- if (chan->free_event_id == -1U) {
+ if (chan->priv->free_event_id == -1U) {
ret = -EMFILE;
goto full;
}
event_name = event_desc->event_name;
break;
- case LTTNG_KERNEL_ABI_KPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_UPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_KRETPROBE: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_UPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_SYSCALL:
event_name = event_param->name;
break;
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
ret = -EINVAL;
goto type_error;
}
- head = utils_borrow_hash_table_bucket(session->events_ht.table,
+ head = utils_borrow_hash_table_bucket(session->priv->events_ht.table,
LTTNG_EVENT_HT_SIZE, event_name);
lttng_hlist_for_each_entry(event_recorder_priv, head, hlist) {
WARN_ON_ONCE(!event_recorder_priv->parent.desc);
event_recorder->parent.priv = &event_recorder_priv->parent;
event_recorder->parent.type = LTTNG_KERNEL_EVENT_TYPE_RECORDER;
+ event_recorder->parent.run_filter = lttng_kernel_interpret_event_filter;
event_recorder->chan = chan;
- event_recorder->priv->id = chan->free_event_id++;
+ event_recorder->priv->id = chan->priv->free_event_id++;
event_recorder->priv->parent.instrumentation = itype;
INIT_LIST_HEAD(&event_recorder->priv->parent.filter_bytecode_runtime_head);
INIT_LIST_HEAD(&event_recorder->priv->parent.enablers_ref_head);
event_recorder_return->parent.priv = &event_recorder_return_priv->parent;
event_recorder_return->parent.type = LTTNG_KERNEL_EVENT_TYPE_RECORDER;
+ event_recorder_return->parent.run_filter = lttng_kernel_interpret_event_filter;
event_recorder_return->chan = chan;
- event_recorder_return->priv->id = chan->free_event_id++;
+ event_recorder_return->priv->id = chan->priv->free_event_id++;
event_recorder_return->priv->parent.instrumentation = itype;
event_recorder_return->parent.enabled = 0;
event_recorder_return->priv->parent.registered = 1;
WARN_ON_ONCE(!ret);
ret = try_module_get(event_recorder_return->priv->parent.desc->owner);
WARN_ON_ONCE(!ret);
- ret = _lttng_event_metadata_statedump(chan->session, chan,
+ ret = _lttng_event_metadata_statedump(chan->parent.session, chan,
event_recorder_return);
WARN_ON_ONCE(ret > 0);
if (ret) {
module_put(event_recorder->priv->parent.desc->owner);
goto statedump_error;
}
- list_add(&event_recorder_return->priv->node, &chan->session->events);
+ list_add(&event_recorder_return->priv->node, &chan->parent.session->priv->events);
break;
}
ret = lttng_uprobes_register_event(event_param->name,
event_param->u.uprobe.fd,
- event_recorder);
+ &event_recorder->parent);
if (ret)
goto register_error;
ret = try_module_get(event_recorder->priv->parent.desc->owner);
WARN_ON_ONCE(!ret);
break;
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
ret = -EINVAL;
goto register_error;
}
- ret = _lttng_event_metadata_statedump(chan->session, chan, event_recorder);
+ ret = _lttng_event_metadata_statedump(chan->parent.session, chan, event_recorder);
WARN_ON_ONCE(ret > 0);
if (ret) {
goto statedump_error;
}
hlist_add_head(&event_recorder->priv->hlist, head);
- list_add(&event_recorder->priv->node, &chan->session->events);
+ list_add(&event_recorder->priv->node, &chan->parent.session->priv->events);
return event_recorder;
statedump_error:
event_name = event_desc->event_name;
break;
- case LTTNG_KERNEL_ABI_KPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_UPROBE: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_UPROBE:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_SYSCALL:
event_name = event_notifier_param->event.name;
break;
- case LTTNG_KERNEL_ABI_KRETPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
ret = -EINVAL;
INIT_LIST_HEAD(&event_notifier->priv->parent.filter_bytecode_runtime_head);
INIT_LIST_HEAD(&event_notifier->priv->parent.enablers_ref_head);
INIT_LIST_HEAD(&event_notifier->priv->capture_bytecode_runtime_head);
+ event_notifier->parent.run_filter = lttng_kernel_interpret_event_filter;
switch (itype) {
case LTTNG_KERNEL_ABI_TRACEPOINT:
*/
smp_wmb();
- ret = lttng_uprobes_register_event_notifier(
- event_notifier_param->event.name,
+ ret = lttng_uprobes_register_event(event_notifier_param->event.name,
event_notifier_param->event.u.uprobe.fd,
- event_notifier);
+ &event_notifier->parent);
if (ret)
goto register_error;
ret = try_module_get(event_notifier->priv->parent.desc->owner);
WARN_ON_ONCE(!ret);
break;
- case LTTNG_KERNEL_ABI_KRETPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
ret = -EINVAL;
return counter->ops->counter_clear(counter->counter, dim_indexes);
}
-struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_channel *chan,
- struct lttng_kernel_abi_event *event_param,
- const struct lttng_kernel_event_desc *event_desc,
- enum lttng_kernel_abi_instrumentation itype)
+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(chan, event_param, event_desc, itype);
+ event = _lttng_kernel_event_recorder_create(event_enabler, event_desc);
mutex_unlock(&sessions_mutex);
return event;
}
/* Only used for tracepoints for now. */
static
-void register_event(struct lttng_kernel_event_recorder *event_recorder)
+void register_event_recorder(struct lttng_kernel_event_recorder *event_recorder)
{
const struct lttng_kernel_event_desc *desc;
int ret = -EINVAL;
switch (event_recorder->priv->parent.instrumentation) {
case LTTNG_KERNEL_ABI_TRACEPOINT:
ret = lttng_wrapper_tracepoint_probe_register(desc->event_kname,
- desc->probe_callback,
- event_recorder);
+ desc->tp_class->probe_callback,
+ &event_recorder->parent);
break;
case LTTNG_KERNEL_ABI_SYSCALL:
- ret = lttng_syscall_filter_enable_event(event_recorder->chan, event_recorder);
+ ret = lttng_syscall_filter_enable_event(&event_recorder->parent);
break;
- case LTTNG_KERNEL_ABI_KPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_UPROBE: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_UPROBE:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_KRETPROBE:
ret = 0;
break;
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
}
/*
* Only used internally at session destruction.
*/
-int _lttng_event_unregister(struct lttng_kernel_event_recorder *event_recorder)
+int _lttng_event_recorder_unregister(struct lttng_kernel_event_recorder *event_recorder)
{
struct lttng_kernel_event_common_private *event_priv = &event_recorder->priv->parent;
const struct lttng_kernel_event_desc *desc;
switch (event_priv->instrumentation) {
case LTTNG_KERNEL_ABI_TRACEPOINT:
ret = lttng_wrapper_tracepoint_probe_unregister(event_priv->desc->event_kname,
- event_priv->desc->probe_callback,
- event_recorder);
+ event_priv->desc->tp_class->probe_callback,
+ &event_recorder->parent);
break;
case LTTNG_KERNEL_ABI_KPROBE:
break;
case LTTNG_KERNEL_ABI_SYSCALL:
- ret = lttng_syscall_filter_disable_event(event_recorder->chan, event_recorder);
+ ret = lttng_syscall_filter_disable_event(&event_recorder->parent);
break;
case LTTNG_KERNEL_ABI_NOOP:
break;
case LTTNG_KERNEL_ABI_UPROBE:
- lttng_uprobes_unregister_event(event_recorder);
+ lttng_uprobes_unregister_event(&event_recorder->parent);
ret = 0;
break;
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
}
switch (event_notifier->priv->parent.instrumentation) {
case LTTNG_KERNEL_ABI_TRACEPOINT:
ret = lttng_wrapper_tracepoint_probe_register(desc->event_kname,
- desc->probe_callback,
- event_notifier);
+ desc->tp_class->probe_callback,
+ &event_notifier->parent);
break;
case LTTNG_KERNEL_ABI_SYSCALL:
- ret = lttng_syscall_filter_enable_event_notifier(event_notifier);
+ ret = lttng_syscall_filter_enable_event(&event_notifier->parent);
break;
- case LTTNG_KERNEL_ABI_KPROBE: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KPROBE:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_UPROBE:
ret = 0;
break;
- case LTTNG_KERNEL_ABI_KRETPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
}
switch (event_notifier->priv->parent.instrumentation) {
case LTTNG_KERNEL_ABI_TRACEPOINT:
ret = lttng_wrapper_tracepoint_probe_unregister(event_notifier->priv->parent.desc->event_kname,
- event_notifier->priv->parent.desc->probe_callback,
- event_notifier);
+ event_notifier->priv->parent.desc->tp_class->probe_callback,
+ &event_notifier->parent);
break;
case LTTNG_KERNEL_ABI_KPROBE:
break;
case LTTNG_KERNEL_ABI_UPROBE:
- lttng_uprobes_unregister_event_notifier(event_notifier);
+ lttng_uprobes_unregister_event(&event_notifier->parent);
ret = 0;
break;
case LTTNG_KERNEL_ABI_SYSCALL:
- ret = lttng_syscall_filter_disable_event_notifier(event_notifier);
+ ret = lttng_syscall_filter_disable_event(&event_notifier->parent);
break;
- case LTTNG_KERNEL_ABI_KRETPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
}
case LTTNG_KERNEL_ABI_UPROBE:
module_put(event_priv->desc->owner);
- lttng_uprobes_destroy_event_private(event_recorder);
+ lttng_uprobes_destroy_event_private(&event_recorder->parent);
break;
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
}
case LTTNG_KERNEL_ABI_UPROBE:
module_put(event_notifier->priv->parent.desc->owner);
- lttng_uprobes_destroy_event_notifier_private(event_notifier);
+ lttng_uprobes_destroy_event_private(&event_notifier->parent);
break;
- case LTTNG_KERNEL_ABI_KRETPROBE: /* Fall-through */
- case LTTNG_KERNEL_ABI_FUNCTION: /* Fall-through */
- case LTTNG_KERNEL_ABI_NOOP: /* Fall-through */
+ case LTTNG_KERNEL_ABI_KRETPROBE:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_FUNCTION:
+ lttng_fallthrough;
+ case LTTNG_KERNEL_ABI_NOOP:
+ lttng_fallthrough;
default:
WARN_ON_ONCE(1);
}
}
}
-struct lttng_id_tracker *get_tracker(struct lttng_session *session,
+struct lttng_kernel_id_tracker *get_tracker(struct lttng_kernel_session *session,
enum tracker_type tracker_type)
{
switch (tracker_type) {
}
}
-int lttng_session_track_id(struct lttng_session *session,
+int lttng_session_track_id(struct lttng_kernel_session *session,
enum tracker_type tracker_type, int id)
{
- struct lttng_id_tracker *tracker;
+ struct lttng_kernel_id_tracker *tracker;
int ret;
tracker = get_tracker(session, tracker_type);
return ret;
}
-int lttng_session_untrack_id(struct lttng_session *session,
+int lttng_session_untrack_id(struct lttng_kernel_session *session,
enum tracker_type tracker_type, int id)
{
- struct lttng_id_tracker *tracker;
+ struct lttng_kernel_id_tracker *tracker;
int ret;
tracker = get_tracker(session, tracker_type);
static
void *id_list_start(struct seq_file *m, loff_t *pos)
{
- struct lttng_id_tracker *id_tracker = m->private;
- struct lttng_id_tracker_rcu *id_tracker_p = id_tracker->p;
+ struct lttng_kernel_id_tracker *id_tracker = m->private;
+ struct lttng_kernel_id_tracker_rcu *id_tracker_p = id_tracker->p;
struct lttng_id_hash_node *e;
int iter = 0, i;
static
void *id_list_next(struct seq_file *m, void *p, loff_t *ppos)
{
- struct lttng_id_tracker *id_tracker = m->private;
- struct lttng_id_tracker_rcu *id_tracker_p = id_tracker->p;
+ struct lttng_kernel_id_tracker *id_tracker = m->private;
+ struct lttng_kernel_id_tracker_rcu *id_tracker_p = id_tracker->p;
struct lttng_id_hash_node *e;
int iter = 0, i;
static
int id_list_show(struct seq_file *m, void *p)
{
- struct lttng_id_tracker *id_tracker = m->private;
- struct lttng_id_tracker_rcu *id_tracker_p = id_tracker->p;
+ struct lttng_kernel_id_tracker *id_tracker = m->private;
+ struct lttng_kernel_id_tracker_rcu *id_tracker_p = id_tracker->p;
int id;
if (p == id_tracker_p) {
id = lttng_id_tracker_get_node_id(e);
}
- switch (id_tracker->tracker_type) {
+ switch (id_tracker->priv->tracker_type) {
case TRACKER_PID:
seq_printf(m, "process { pid = %d; };\n", id);
break;
int lttng_tracker_ids_list_release(struct inode *inode, struct file *file)
{
struct seq_file *m = file->private_data;
- struct lttng_id_tracker *id_tracker = m->private;
+ struct lttng_kernel_id_tracker *id_tracker = m->private;
int ret;
WARN_ON_ONCE(!id_tracker);
ret = seq_release(inode, file);
if (!ret)
- fput(id_tracker->session->file);
+ fput(id_tracker->priv->session->priv->file);
return ret;
}
.release = lttng_tracker_ids_list_release,
};
-int lttng_session_list_tracker_ids(struct lttng_session *session,
+int lttng_session_list_tracker_ids(struct lttng_kernel_session *session,
enum tracker_type tracker_type)
{
struct file *tracker_ids_list_file;
ret = PTR_ERR(tracker_ids_list_file);
goto file_error;
}
- if (!atomic_long_add_unless(&session->file->f_count, 1, LONG_MAX)) {
+ if (!atomic_long_add_unless(&session->priv->file->f_count, 1, LONG_MAX)) {
ret = -EOVERFLOW;
goto refcount_error;
}
return file_fd;
open_error:
- atomic_long_dec(&session->file->f_count);
+ atomic_long_dec(&session->priv->file->f_count);
refcount_error:
fput(tracker_ids_list_file);
file_error:
}
int lttng_desc_match_enabler(const struct lttng_kernel_event_desc *desc,
- struct lttng_enabler *enabler)
+ struct lttng_event_enabler_common *enabler)
{
const char *desc_name, *enabler_name;
bool compat = false, entry = false;
}
static
-int lttng_event_enabler_match_event(struct lttng_event_enabler *event_enabler,
+int lttng_event_enabler_match_event(struct lttng_event_recorder_enabler *event_enabler,
struct lttng_kernel_event_recorder *event_recorder)
{
- struct lttng_enabler *base_enabler = lttng_event_enabler_as_enabler(
+ struct lttng_event_enabler_common *base_enabler = lttng_event_recorder_enabler_as_enabler(
event_enabler);
if (base_enabler->event_param.instrumentation != event_recorder->priv->parent.instrumentation)
int lttng_event_notifier_enabler_match_event_notifier(struct lttng_event_notifier_enabler *event_notifier_enabler,
struct lttng_kernel_event_notifier *event_notifier)
{
- struct lttng_enabler *base_enabler = lttng_event_notifier_enabler_as_enabler(
+ struct lttng_event_enabler_common *base_enabler = lttng_event_notifier_enabler_as_enabler(
event_notifier_enabler);
if (base_enabler->event_param.instrumentation != event_notifier->priv->parent.instrumentation)
return 0;
if (lttng_desc_match_enabler(event_notifier->priv->parent.desc, base_enabler)
&& event_notifier->priv->group == event_notifier_enabler->group
- && event_notifier->priv->parent.user_token == event_notifier_enabler->base.user_token)
+ && event_notifier->priv->parent.user_token == event_notifier_enabler->parent.user_token)
return 1;
else
return 0;
static
struct lttng_enabler_ref *lttng_enabler_ref(
struct list_head *enablers_ref_list,
- struct lttng_enabler *enabler)
+ struct lttng_event_enabler_common *enabler)
{
struct lttng_enabler_ref *enabler_ref;
}
static
-void lttng_create_tracepoint_event_if_missing(struct lttng_event_enabler *event_enabler)
+void lttng_create_tracepoint_event_if_missing(struct lttng_event_recorder_enabler *event_enabler)
{
- struct lttng_session *session = event_enabler->chan->session;
+ struct lttng_kernel_session *session = event_enabler->chan->parent.session;
struct lttng_kernel_probe_desc *probe_desc;
const struct lttng_kernel_event_desc *desc;
int i;
desc = probe_desc->event_desc[i];
if (!lttng_desc_match_enabler(desc,
- lttng_event_enabler_as_enabler(event_enabler)))
+ lttng_event_recorder_enabler_as_enabler(event_enabler)))
continue;
/*
* Check if already created.
*/
head = utils_borrow_hash_table_bucket(
- session->events_ht.table, LTTNG_EVENT_HT_SIZE,
+ session->priv->events_ht.table, LTTNG_EVENT_HT_SIZE,
desc->event_name);
lttng_hlist_for_each_entry(event_recorder_private, head, hlist) {
if (event_recorder_private->parent.desc == desc
* We need to create an event for this
* event probe.
*/
- event_recorder = _lttng_kernel_event_recorder_create(event_enabler->chan,
- NULL, desc, LTTNG_KERNEL_ABI_TRACEPOINT);
+ event_recorder = _lttng_kernel_event_recorder_create(event_enabler, desc);
if (!event_recorder) {
printk(KERN_INFO "LTTng: Unable to create event %s\n",
probe_desc->event_desc[i]->event_name);
LTTNG_EVENT_NOTIFIER_HT_SIZE, desc->event_name);
lttng_hlist_for_each_entry(event_notifier_priv, head, hlist) {
if (event_notifier_priv->parent.desc == desc
- && event_notifier_priv->parent.user_token == event_notifier_enabler->base.user_token)
+ && event_notifier_priv->parent.user_token == event_notifier_enabler->parent.user_token)
found = 1;
}
if (found)
* We need to create a event_notifier for this event probe.
*/
event_notifier = _lttng_event_notifier_create(desc,
- event_notifier_enabler->base.user_token,
+ event_notifier_enabler->parent.user_token,
event_notifier_enabler->error_counter_index,
event_notifier_group, NULL,
LTTNG_KERNEL_ABI_TRACEPOINT);
}
static
-void lttng_create_syscall_event_if_missing(struct lttng_event_enabler *event_enabler)
+void lttng_create_syscall_event_if_missing(struct lttng_event_recorder_enabler *event_enabler)
{
int ret;
- ret = lttng_syscalls_register_event(event_enabler);
+ ret = lttng_syscalls_register_event(&event_enabler->parent);
WARN_ON_ONCE(ret);
}
{
int ret;
- ret = lttng_syscalls_register_event_notifier(event_notifier_enabler);
+ ret = lttng_syscalls_register_event(&event_notifier_enabler->parent);
WARN_ON_ONCE(ret);
ret = lttng_syscalls_create_matching_event_notifiers(event_notifier_enabler);
WARN_ON_ONCE(ret);
* Should be called with sessions mutex held.
*/
static
-void lttng_create_event_if_missing(struct lttng_event_enabler *event_enabler)
+void lttng_create_event_if_missing(struct lttng_event_recorder_enabler *event_enabler)
{
- switch (event_enabler->base.event_param.instrumentation) {
+ switch (event_enabler->parent.event_param.instrumentation) {
case LTTNG_KERNEL_ABI_TRACEPOINT:
lttng_create_tracepoint_event_if_missing(event_enabler);
break;
* Should be called with sessions mutex held.
*/
static
-int lttng_event_enabler_ref_events(struct lttng_event_enabler *event_enabler)
+int lttng_event_enabler_ref_events(struct lttng_event_recorder_enabler *event_enabler)
{
- struct lttng_channel *chan = event_enabler->chan;
- struct lttng_session *session = event_enabler->chan->session;
- struct lttng_enabler *base_enabler = lttng_event_enabler_as_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;
if (base_enabler->event_param.instrumentation == LTTNG_KERNEL_ABI_SYSCALL &&
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->syscall_all_entry, enabled);
+ 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->syscall_all_exit, enabled);
+ WRITE_ONCE(chan->priv->parent.syscall_table.syscall_all_exit, enabled);
}
/* First ensure that probe events are created for this enabler. */
lttng_create_event_if_missing(event_enabler);
/* For each event matching event_enabler in session event list. */
- list_for_each_entry(event_recorder_priv, &session->events, node) {
+ list_for_each_entry(event_recorder_priv, &session->priv->events, 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, event_recorder))
continue;
enabler_ref = lttng_enabler_ref(&event_recorder_priv->parent.enablers_ref_head,
- lttng_event_enabler_as_enabler(event_enabler));
+ lttng_event_recorder_enabler_as_enabler(event_enabler));
if (!enabler_ref) {
/*
* If no backward ref, create it.
enabler_ref = kzalloc(sizeof(*enabler_ref), GFP_KERNEL);
if (!enabler_ref)
return -ENOMEM;
- enabler_ref->ref = lttng_event_enabler_as_enabler(event_enabler);
+ enabler_ref->ref = lttng_event_recorder_enabler_as_enabler(event_enabler);
list_add(&enabler_ref->node,
&event_recorder_priv->parent.enablers_ref_head);
}
lttng_enabler_link_bytecode(event_recorder_priv->parent.desc,
lttng_static_ctx,
&event_recorder_priv->parent.filter_bytecode_runtime_head,
- <tng_event_enabler_as_enabler(event_enabler)->filter_bytecode_head);
+ <tng_event_recorder_enabler_as_enabler(event_enabler)->filter_bytecode_head);
}
return 0;
}
static
void lttng_create_event_notifier_if_missing(struct lttng_event_notifier_enabler *event_notifier_enabler)
{
- switch (event_notifier_enabler->base.event_param.instrumentation) {
+ switch (event_notifier_enabler->parent.event_param.instrumentation) {
case LTTNG_KERNEL_ABI_TRACEPOINT:
lttng_create_tracepoint_event_notifier_if_missing(event_notifier_enabler);
break;
struct lttng_event_notifier_enabler *event_notifier_enabler)
{
struct lttng_event_notifier_group *event_notifier_group = event_notifier_enabler->group;
- struct lttng_enabler *base_enabler = lttng_event_notifier_enabler_as_enabler(event_notifier_enabler);
+ 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;
if (base_enabler->event_param.instrumentation == LTTNG_KERNEL_ABI_SYSCALL &&
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_all_entry, enabled);
+ 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_all_exit, enabled);
+ WRITE_ONCE(event_notifier_group->syscall_table.syscall_all_exit, enabled);
}
*/
int lttng_fix_pending_events(void)
{
- struct lttng_session *session;
+ struct lttng_kernel_session_private *session_priv;
- list_for_each_entry(session, &sessions, list)
- lttng_session_lazy_sync_event_enablers(session);
+ list_for_each_entry(session_priv, &sessions, list)
+ lttng_session_lazy_sync_event_enablers(session_priv->pub);
return 0;
}
list_for_each_entry(event_notifier_enabler, &event_notifier_group->enablers_head,
node) {
- if (event_notifier_enabler->base.enabled)
+ if (event_notifier_enabler->parent.enabled)
return true;
}
return false;
return 0;
}
-struct lttng_event_enabler *lttng_event_enabler_create(
+struct lttng_event_recorder_enabler *lttng_event_recorder_enabler_create(
enum lttng_enabler_format_type format_type,
struct lttng_kernel_abi_event *event_param,
- struct lttng_channel *chan)
+ struct lttng_kernel_channel_buffer *chan)
{
- struct lttng_event_enabler *event_enabler;
+ struct lttng_event_recorder_enabler *event_enabler;
event_enabler = kzalloc(sizeof(*event_enabler), GFP_KERNEL);
if (!event_enabler)
return NULL;
- event_enabler->base.format_type = format_type;
- INIT_LIST_HEAD(&event_enabler->base.filter_bytecode_head);
- memcpy(&event_enabler->base.event_param, event_param,
- sizeof(event_enabler->base.event_param));
+ event_enabler->parent.enabler_type = LTTNG_EVENT_ENABLER_TYPE_RECORDER;
+ event_enabler->parent.format_type = format_type;
+ INIT_LIST_HEAD(&event_enabler->parent.filter_bytecode_head);
+ memcpy(&event_enabler->parent.event_param, event_param,
+ sizeof(event_enabler->parent.event_param));
event_enabler->chan = chan;
/* ctx left NULL */
- event_enabler->base.enabled = 0;
+ event_enabler->parent.enabled = 0;
+ return event_enabler;
+}
+
+void lttng_event_enabler_session_add(struct lttng_kernel_session *session,
+ struct lttng_event_recorder_enabler *event_enabler)
+{
mutex_lock(&sessions_mutex);
- list_add(&event_enabler->node, &event_enabler->chan->session->enablers_head);
- lttng_session_lazy_sync_event_enablers(event_enabler->chan->session);
+ list_add(&event_enabler->node, &session->priv->enablers_head);
+ event_enabler->published = true;
+ lttng_session_lazy_sync_event_enablers(session);
mutex_unlock(&sessions_mutex);
- return event_enabler;
}
-int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler)
+int lttng_event_enabler_enable(struct lttng_event_enabler_common *event_enabler)
{
mutex_lock(&sessions_mutex);
- lttng_event_enabler_as_enabler(event_enabler)->enabled = 1;
- lttng_session_lazy_sync_event_enablers(event_enabler->chan->session);
+ event_enabler->enabled = 1;
+ lttng_event_enabler_sync(event_enabler);
mutex_unlock(&sessions_mutex);
return 0;
}
-int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler)
+int lttng_event_enabler_disable(struct lttng_event_enabler_common *event_enabler)
{
mutex_lock(&sessions_mutex);
- lttng_event_enabler_as_enabler(event_enabler)->enabled = 0;
- lttng_session_lazy_sync_event_enablers(event_enabler->chan->session);
+ event_enabler->enabled = 0;
+ lttng_event_enabler_sync(event_enabler);
mutex_unlock(&sessions_mutex);
return 0;
}
static
-int lttng_enabler_attach_filter_bytecode(struct lttng_enabler *enabler,
+int lttng_enabler_attach_filter_bytecode(struct lttng_event_enabler_common *enabler,
struct lttng_kernel_abi_filter_bytecode __user *bytecode)
{
- struct lttng_bytecode_node *bytecode_node;
+ struct lttng_kernel_bytecode_node *bytecode_node;
uint32_t bytecode_len;
int ret;
if (ret)
goto error_free;
- bytecode_node->type = LTTNG_BYTECODE_NODE_TYPE_FILTER;
+ bytecode_node->type = LTTNG_KERNEL_BYTECODE_TYPE_FILTER;
bytecode_node->enabler = enabler;
/* Enforce length based on allocated size */
bytecode_node->bc.len = bytecode_len;
return ret;
}
-int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler *event_enabler,
+int lttng_event_enabler_attach_filter_bytecode(struct lttng_event_enabler_common *event_enabler,
struct lttng_kernel_abi_filter_bytecode __user *bytecode)
{
int ret;
- ret = lttng_enabler_attach_filter_bytecode(
- lttng_event_enabler_as_enabler(event_enabler), bytecode);
+ ret = lttng_enabler_attach_filter_bytecode(event_enabler, bytecode);
if (ret)
goto error;
-
- lttng_session_lazy_sync_event_enablers(event_enabler->chan->session);
+ lttng_event_enabler_sync(event_enabler);
return 0;
error:
}
static
-void lttng_enabler_destroy(struct lttng_enabler *enabler)
+void lttng_enabler_destroy(struct lttng_event_enabler_common *enabler)
{
- struct lttng_bytecode_node *filter_node, *tmp_filter_node;
+ struct lttng_kernel_bytecode_node *filter_node, *tmp_filter_node;
/* Destroy filter bytecode */
list_for_each_entry_safe(filter_node, tmp_filter_node,
}
}
-static
-void lttng_event_enabler_destroy(struct lttng_event_enabler *event_enabler)
+void lttng_event_enabler_destroy(struct lttng_event_enabler_common *event_enabler)
{
- lttng_enabler_destroy(lttng_event_enabler_as_enabler(event_enabler));
+ 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);
+
+ lttng_enabler_destroy(event_enabler);
+ if (event_recorder_enabler->published)
+ list_del(&event_recorder_enabler->node);
+ kfree(event_recorder_enabler);
+ 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);
- list_del(&event_enabler->node);
- kfree(event_enabler);
+ list_del(&event_notifier_enabler->node);
+ lttng_enabler_destroy(event_enabler);
+ kfree(event_notifier_enabler);
+ break;
+ }
+ default:
+ WARN_ON_ONCE(1);
+ }
}
struct lttng_event_notifier_enabler *lttng_event_notifier_enabler_create(
if (!event_notifier_enabler)
return NULL;
- event_notifier_enabler->base.format_type = format_type;
- INIT_LIST_HEAD(&event_notifier_enabler->base.filter_bytecode_head);
+ event_notifier_enabler->parent.enabler_type = LTTNG_EVENT_ENABLER_TYPE_NOTIFIER;
+ event_notifier_enabler->parent.format_type = format_type;
+ INIT_LIST_HEAD(&event_notifier_enabler->parent.filter_bytecode_head);
INIT_LIST_HEAD(&event_notifier_enabler->capture_bytecode_head);
event_notifier_enabler->error_counter_index = event_notifier_param->error_counter_index;
event_notifier_enabler->num_captures = 0;
- memcpy(&event_notifier_enabler->base.event_param, &event_notifier_param->event,
- sizeof(event_notifier_enabler->base.event_param));
+ memcpy(&event_notifier_enabler->parent.event_param, &event_notifier_param->event,
+ sizeof(event_notifier_enabler->parent.event_param));
- event_notifier_enabler->base.enabled = 0;
- event_notifier_enabler->base.user_token = event_notifier_param->event.token;
+ event_notifier_enabler->parent.enabled = 0;
+ event_notifier_enabler->parent.user_token = event_notifier_param->event.token;
event_notifier_enabler->group = event_notifier_group;
mutex_lock(&sessions_mutex);
return 0;
}
-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 ret;
-
- ret = lttng_enabler_attach_filter_bytecode(
- lttng_event_notifier_enabler_as_enabler(event_notifier_enabler),
- bytecode);
- if (ret)
- goto error;
-
- lttng_event_notifier_group_sync_enablers(event_notifier_enabler->group);
- return 0;
-
-error:
- return ret;
-}
-
int lttng_event_notifier_enabler_attach_capture_bytecode(
struct lttng_event_notifier_enabler *event_notifier_enabler,
struct lttng_kernel_abi_capture_bytecode __user *bytecode)
{
- struct lttng_bytecode_node *bytecode_node;
- struct lttng_enabler *enabler =
+ struct lttng_kernel_bytecode_node *bytecode_node;
+ struct lttng_event_enabler_common *enabler =
lttng_event_notifier_enabler_as_enabler(event_notifier_enabler);
uint32_t bytecode_len;
int ret;
if (ret)
goto error_free;
- bytecode_node->type = LTTNG_BYTECODE_NODE_TYPE_CAPTURE;
+ bytecode_node->type = LTTNG_KERNEL_BYTECODE_TYPE_CAPTURE;
bytecode_node->enabler = enabler;
/* Enforce length based on allocated size */
return ret;
}
-static
-void lttng_event_notifier_enabler_destroy(
- struct lttng_event_notifier_enabler *event_notifier_enabler)
-{
- if (!event_notifier_enabler) {
- return;
- }
-
- list_del(&event_notifier_enabler->node);
-
- lttng_enabler_destroy(lttng_event_notifier_enabler_as_enabler(event_notifier_enabler));
- kfree(event_notifier_enabler);
-}
-
/*
* lttng_session_sync_event_enablers should be called just before starting a
* session.
* Should be called with sessions mutex held.
*/
static
-void lttng_session_sync_event_enablers(struct lttng_session *session)
+void lttng_session_sync_event_enablers(struct lttng_kernel_session *session)
{
- struct lttng_event_enabler *event_enabler;
+ struct lttng_event_recorder_enabler *event_enabler;
struct lttng_kernel_event_recorder_private *event_recorder_priv;
- list_for_each_entry(event_enabler, &session->enablers_head, node)
+ list_for_each_entry(event_enabler, &session->priv->enablers_head, node)
lttng_event_enabler_ref_events(event_enabler);
/*
* For each event, if at least one of its enablers is enabled,
* 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->events, node) {
+ list_for_each_entry(event_recorder_priv, &session->priv->events, node) {
struct lttng_kernel_event_recorder *event_recorder = event_recorder_priv->pub;
struct lttng_enabler_ref *enabler_ref;
- struct lttng_bytecode_runtime *runtime;
+ struct lttng_kernel_bytecode_runtime *runtime;
int enabled = 0, has_enablers_without_filter_bytecode = 0;
int nr_filters = 0;
switch (event_recorder_priv->parent.instrumentation) {
- case LTTNG_KERNEL_ABI_TRACEPOINT: /* Fall-through */
+ case LTTNG_KERNEL_ABI_TRACEPOINT:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_SYSCALL:
/* Enable events */
list_for_each_entry(enabler_ref,
* intesection of session and channel transient enable
* states.
*/
- enabled = enabled && session->tstate && event_recorder->chan->tstate;
+ enabled = enabled && session->priv->tstate && event_recorder->chan->priv->parent.tstate;
WRITE_ONCE(event_recorder->parent.enabled, enabled);
/*
* state.
*/
if (enabled) {
- register_event(event_recorder);
+ register_event_recorder(event_recorder);
} else {
- _lttng_event_unregister(event_recorder);
+ _lttng_event_recorder_unregister(event_recorder);
}
/* Check if has enablers without bytecode enabled */
/* Enable filters */
list_for_each_entry(runtime,
&event_recorder_priv->parent.filter_bytecode_runtime_head, node) {
- lttng_bytecode_filter_sync_state(runtime);
+ lttng_bytecode_sync_state(runtime);
nr_filters++;
}
WRITE_ONCE(event_recorder_priv->parent.pub->eval_filter,
* Should be called with sessions mutex held.
*/
static
-void lttng_session_lazy_sync_event_enablers(struct lttng_session *session)
+void lttng_session_lazy_sync_event_enablers(struct lttng_kernel_session *session)
{
/* We can skip if session is not active */
if (!session->active)
list_for_each_entry(event_notifier_priv, &event_notifier_group->event_notifiers_head, node) {
struct lttng_kernel_event_notifier *event_notifier = event_notifier_priv->pub;
struct lttng_enabler_ref *enabler_ref;
- struct lttng_bytecode_runtime *runtime;
+ struct lttng_kernel_bytecode_runtime *runtime;
int enabled = 0, has_enablers_without_filter_bytecode = 0;
int nr_filters = 0, nr_captures = 0;
switch (event_notifier_priv->parent.instrumentation) {
- case LTTNG_KERNEL_ABI_TRACEPOINT: /* Fall-through */
+ case LTTNG_KERNEL_ABI_TRACEPOINT:
+ lttng_fallthrough;
case LTTNG_KERNEL_ABI_SYSCALL:
/* Enable event_notifiers */
list_for_each_entry(enabler_ref,
/* Enable filters */
list_for_each_entry(runtime,
&event_notifier_priv->parent.filter_bytecode_runtime_head, node) {
- lttng_bytecode_filter_sync_state(runtime);
+ lttng_bytecode_sync_state(runtime);
nr_filters++;
}
WRITE_ONCE(event_notifier_priv->parent.pub->eval_filter,
/* Enable captures */
list_for_each_entry(runtime,
&event_notifier_priv->capture_bytecode_runtime_head, node) {
- lttng_bytecode_capture_sync_state(runtime);
+ lttng_bytecode_sync_state(runtime);
nr_captures++;
}
WRITE_ONCE(event_notifier->eval_capture, !!nr_captures);
}
}
+static
+void lttng_event_enabler_sync(struct lttng_event_enabler_common *event_enabler)
+{
+ 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);
+ lttng_session_lazy_sync_event_enablers(event_recorder_enabler->chan->parent.session);
+ 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);
+ lttng_event_notifier_group_sync_enablers(event_notifier_enabler->group);
+ break;
+ }
+ default:
+ WARN_ON_ONCE(1);
+ }
+}
+
/*
* Serialize at most one packet worth of metadata into a metadata
* channel.
* was written and a negative value on error.
*/
int lttng_metadata_output_channel(struct lttng_metadata_stream *stream,
- struct channel *chan, bool *coherent)
+ struct lttng_kernel_ring_buffer_channel *chan, bool *coherent)
{
- struct lib_ring_buffer_ctx ctx;
+ struct lttng_kernel_ring_buffer_ctx ctx;
int ret = 0;
size_t len, reserve_len;
if (!len)
goto end;
reserve_len = min_t(size_t,
- stream->transport->ops.packet_avail_size(chan),
+ stream->transport->ops.priv->packet_avail_size(chan),
len);
- lib_ring_buffer_ctx_init(&ctx, chan, NULL, reserve_len,
- sizeof(char), -1);
+ lib_ring_buffer_ctx_init(&ctx, chan, reserve_len,
+ sizeof(char), NULL);
/*
* If reservation failed, return an error to the caller.
*/
- ret = stream->transport->ops.event_reserve(&ctx, 0);
+ ret = stream->transport->ops.event_reserve(&ctx);
if (ret != 0) {
printk(KERN_WARNING "LTTng: Metadata event reservation failed\n");
stream->coherent = false;
}
stream->transport->ops.event_write(&ctx,
stream->metadata_cache->data + stream->metadata_in,
- reserve_len);
+ reserve_len, 1);
stream->transport->ops.event_commit(&ctx);
stream->metadata_in += reserve_len;
if (reserve_len < len)
}
static
-void lttng_metadata_begin(struct lttng_session *session)
+void lttng_metadata_begin(struct lttng_kernel_session *session)
{
- if (atomic_inc_return(&session->metadata_cache->producing) == 1)
- mutex_lock(&session->metadata_cache->lock);
+ if (atomic_inc_return(&session->priv->metadata_cache->producing) == 1)
+ mutex_lock(&session->priv->metadata_cache->lock);
}
static
-void lttng_metadata_end(struct lttng_session *session)
+void lttng_metadata_end(struct lttng_kernel_session *session)
{
- WARN_ON_ONCE(!atomic_read(&session->metadata_cache->producing));
- if (atomic_dec_return(&session->metadata_cache->producing) == 0) {
+ WARN_ON_ONCE(!atomic_read(&session->priv->metadata_cache->producing));
+ if (atomic_dec_return(&session->priv->metadata_cache->producing) == 0) {
struct lttng_metadata_stream *stream;
- list_for_each_entry(stream, &session->metadata_cache->metadata_stream, list)
+ list_for_each_entry(stream, &session->priv->metadata_cache->metadata_stream, list)
wake_up_interruptible(&stream->read_wait);
- mutex_unlock(&session->metadata_cache->lock);
+ mutex_unlock(&session->priv->metadata_cache->lock);
}
}
* The content of the printf is printed as a single atomic metadata
* transaction.
*/
-int lttng_metadata_printf(struct lttng_session *session,
+int lttng_metadata_printf(struct lttng_kernel_session *session,
const char *fmt, ...)
{
char *str;
return -ENOMEM;
len = strlen(str);
- WARN_ON_ONCE(!atomic_read(&session->metadata_cache->producing));
- if (session->metadata_cache->metadata_written + len >
- session->metadata_cache->cache_alloc) {
+ WARN_ON_ONCE(!atomic_read(&session->priv->metadata_cache->producing));
+ if (session->priv->metadata_cache->metadata_written + len >
+ session->priv->metadata_cache->cache_alloc) {
char *tmp_cache_realloc;
unsigned int tmp_cache_alloc_size;
tmp_cache_alloc_size = max_t(unsigned int,
- session->metadata_cache->cache_alloc + len,
- session->metadata_cache->cache_alloc << 1);
+ session->priv->metadata_cache->cache_alloc + len,
+ session->priv->metadata_cache->cache_alloc << 1);
tmp_cache_realloc = vzalloc(tmp_cache_alloc_size);
if (!tmp_cache_realloc)
goto err;
- if (session->metadata_cache->data) {
+ if (session->priv->metadata_cache->data) {
memcpy(tmp_cache_realloc,
- session->metadata_cache->data,
- session->metadata_cache->cache_alloc);
- vfree(session->metadata_cache->data);
+ session->priv->metadata_cache->data,
+ session->priv->metadata_cache->cache_alloc);
+ vfree(session->priv->metadata_cache->data);
}
- session->metadata_cache->cache_alloc = tmp_cache_alloc_size;
- session->metadata_cache->data = tmp_cache_realloc;
+ session->priv->metadata_cache->cache_alloc = tmp_cache_alloc_size;
+ session->priv->metadata_cache->data = tmp_cache_realloc;
}
- memcpy(session->metadata_cache->data +
- session->metadata_cache->metadata_written,
+ memcpy(session->priv->metadata_cache->data +
+ session->priv->metadata_cache->metadata_written,
str, len);
- session->metadata_cache->metadata_written += len;
+ session->priv->metadata_cache->metadata_written += len;
kfree(str);
return 0;
}
static
-int print_tabs(struct lttng_session *session, size_t nesting)
+int print_tabs(struct lttng_kernel_session *session, size_t nesting)
{
size_t i;
}
static
-int lttng_field_name_statedump(struct lttng_session *session,
+int lttng_field_name_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
size_t nesting)
{
}
static
-int _lttng_integer_type_statedump(struct lttng_session *session,
+int _lttng_integer_type_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_type_integer *type,
enum lttng_kernel_string_encoding parent_encoding,
size_t nesting)
* Must be called with sessions_mutex held.
*/
static
-int _lttng_struct_type_statedump(struct lttng_session *session,
+int _lttng_struct_type_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_type_struct *type,
size_t nesting)
{
+ const char *prev_field_name = NULL;
int ret;
uint32_t i, nr_fields;
unsigned int alignment;
const struct lttng_kernel_event_field *iter_field;
iter_field = type->fields[i];
- ret = _lttng_field_statedump(session, iter_field, nesting + 1);
+ ret = _lttng_field_statedump(session, iter_field, nesting + 1, &prev_field_name);
if (ret)
return ret;
}
* Must be called with sessions_mutex held.
*/
static
-int _lttng_struct_field_statedump(struct lttng_session *session,
+int _lttng_struct_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
size_t nesting)
{
* Must be called with sessions_mutex held.
*/
static
-int _lttng_variant_type_statedump(struct lttng_session *session,
+int _lttng_variant_type_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_type_variant *type,
- size_t nesting)
+ size_t nesting,
+ const char *prev_field_name)
{
+ const char *tag_name;
int ret;
uint32_t i, nr_choices;
+ tag_name = type->tag_name;
+ if (!tag_name)
+ tag_name = prev_field_name;
+ if (!tag_name)
+ return -EINVAL;
/*
* CTF 1.8 does not allow expressing nonzero variant alignment in a nestable way.
*/
return ret;
ret = lttng_metadata_printf(session,
"variant <_%s> {\n",
- type->tag_name);
+ tag_name);
if (ret)
return ret;
nr_choices = type->nr_choices;
const struct lttng_kernel_event_field *iter_field;
iter_field = type->choices[i];
- ret = _lttng_field_statedump(session, iter_field, nesting + 1);
+ ret = _lttng_field_statedump(session, iter_field, nesting + 1, NULL);
if (ret)
return ret;
}
* Must be called with sessions_mutex held.
*/
static
-int _lttng_variant_field_statedump(struct lttng_session *session,
+int _lttng_variant_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
- size_t nesting)
+ size_t nesting,
+ const char *prev_field_name)
{
int ret;
ret = _lttng_variant_type_statedump(session,
- lttng_kernel_get_type_variant(field->type), nesting);
+ lttng_kernel_get_type_variant(field->type), nesting,
+ prev_field_name);
if (ret)
return ret;
return lttng_field_name_statedump(session, field, nesting);
* Must be called with sessions_mutex held.
*/
static
-int _lttng_array_field_statedump(struct lttng_session *session,
+int _lttng_array_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
size_t nesting)
{
* Must be called with sessions_mutex held.
*/
static
-int _lttng_sequence_field_statedump(struct lttng_session *session,
+int _lttng_sequence_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
- size_t nesting)
+ size_t nesting,
+ const char *prev_field_name)
{
int ret;
const char *length_name;
WARN_ON_ONCE(!sequence_type);
length_name = sequence_type->length_name;
+ if (!length_name)
+ length_name = prev_field_name;
+ if (!length_name)
+ return -EINVAL;
if (sequence_type->alignment) {
ret = print_tabs(session, nesting);
ret = lttng_metadata_printf(session,
" _%s[ _%s ];\n",
field->name,
- sequence_type->length_name);
+ length_name);
return ret;
}
* Must be called with sessions_mutex held.
*/
static
-int _lttng_enum_type_statedump(struct lttng_session *session,
+int _lttng_enum_type_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_type_enum *type,
size_t nesting)
{
* Must be called with sessions_mutex held.
*/
static
-int _lttng_enum_field_statedump(struct lttng_session *session,
+int _lttng_enum_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
size_t nesting)
{
}
static
-int _lttng_integer_field_statedump(struct lttng_session *session,
+int _lttng_integer_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
size_t nesting)
{
}
static
-int _lttng_string_type_statedump(struct lttng_session *session,
+int _lttng_string_type_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_type_string *type,
size_t nesting)
{
}
static
-int _lttng_string_field_statedump(struct lttng_session *session,
+int _lttng_string_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
size_t nesting)
{
* Must be called with sessions_mutex held.
*/
static
-int _lttng_type_statedump(struct lttng_session *session,
+int _lttng_type_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_type_common *type,
enum lttng_kernel_string_encoding parent_encoding,
size_t nesting)
case lttng_kernel_type_variant:
ret = _lttng_variant_type_statedump(session,
lttng_kernel_get_type_variant(type),
- nesting);
+ nesting, NULL);
break;
/* Nested arrays and sequences are not supported yet. */
* Must be called with sessions_mutex held.
*/
static
-int _lttng_field_statedump(struct lttng_session *session,
+int _lttng_field_statedump(struct lttng_kernel_session *session,
const struct lttng_kernel_event_field *field,
- size_t nesting)
+ size_t nesting,
+ const char **prev_field_name_p)
{
+ const char *prev_field_name = NULL;
int ret = 0;
+ if (prev_field_name_p)
+ prev_field_name = *prev_field_name_p;
switch (field->type->type) {
case lttng_kernel_type_integer:
ret = _lttng_integer_field_statedump(session, field, nesting);
ret = _lttng_array_field_statedump(session, field, nesting);
break;
case lttng_kernel_type_sequence:
- ret = _lttng_sequence_field_statedump(session, field, nesting);
+ ret = _lttng_sequence_field_statedump(session, field, nesting, prev_field_name);
break;
case lttng_kernel_type_variant:
- ret = _lttng_variant_field_statedump(session, field, nesting);
+ ret = _lttng_variant_field_statedump(session, field, nesting, prev_field_name);
break;
default:
WARN_ON_ONCE(1);
return -EINVAL;
}
+ if (prev_field_name_p)
+ *prev_field_name_p = field->name;
return ret;
}
static
-int _lttng_context_metadata_statedump(struct lttng_session *session,
+int _lttng_context_metadata_statedump(struct lttng_kernel_session *session,
struct lttng_kernel_ctx *ctx)
{
+ const char *prev_field_name = NULL;
int ret = 0;
int i;
for (i = 0; i < ctx->nr_fields; i++) {
const struct lttng_kernel_ctx_field *field = &ctx->fields[i];
- ret = _lttng_field_statedump(session, field->event_field, 2);
+ ret = _lttng_field_statedump(session, field->event_field, 2, &prev_field_name);
if (ret)
return ret;
}
}
static
-int _lttng_fields_metadata_statedump(struct lttng_session *session,
+int _lttng_fields_metadata_statedump(struct lttng_kernel_session *session,
struct lttng_kernel_event_recorder *event_recorder)
{
+ const char *prev_field_name = NULL;
const struct lttng_kernel_event_desc *desc = event_recorder->priv->parent.desc;
int ret = 0;
int i;
- for (i = 0; i < desc->nr_fields; i++) {
- const struct lttng_kernel_event_field *field = desc->fields[i];
+ for (i = 0; i < desc->tp_class->nr_fields; i++) {
+ const struct lttng_kernel_event_field *field = desc->tp_class->fields[i];
- ret = _lttng_field_statedump(session, field, 2);
+ ret = _lttng_field_statedump(session, field, 2, &prev_field_name);
if (ret)
return ret;
}
* transaction.
*/
static
-int _lttng_event_metadata_statedump(struct lttng_session *session,
- struct lttng_channel *chan,
+int _lttng_event_metadata_statedump(struct lttng_kernel_session *session,
+ struct lttng_kernel_channel_buffer *chan,
struct lttng_kernel_event_recorder *event_recorder)
{
int ret = 0;
if (event_recorder->priv->metadata_dumped || !LTTNG_READ_ONCE(session->active))
return 0;
- if (chan->channel_type == METADATA_CHANNEL)
+ if (chan->priv->channel_type == METADATA_CHANNEL)
return 0;
lttng_metadata_begin(session);
" stream_id = %u;\n",
event_recorder->priv->parent.desc->event_name,
event_recorder->priv->id,
- event_recorder->chan->id);
+ event_recorder->chan->priv->id);
if (ret)
goto end;
* transaction.
*/
static
-int _lttng_channel_metadata_statedump(struct lttng_session *session,
- struct lttng_channel *chan)
+int _lttng_channel_metadata_statedump(struct lttng_kernel_session *session,
+ struct lttng_kernel_channel_buffer *chan)
{
int ret = 0;
- if (chan->metadata_dumped || !LTTNG_READ_ONCE(session->active))
+ if (chan->priv->metadata_dumped || !LTTNG_READ_ONCE(session->active))
return 0;
- if (chan->channel_type == METADATA_CHANNEL)
+ if (chan->priv->channel_type == METADATA_CHANNEL)
return 0;
lttng_metadata_begin(session);
- WARN_ON_ONCE(!chan->header_type);
+ WARN_ON_ONCE(!chan->priv->header_type);
ret = lttng_metadata_printf(session,
"stream {\n"
" id = %u;\n"
" event.header := %s;\n"
" packet.context := struct packet_context;\n",
- chan->id,
- chan->header_type == 1 ? "struct event_header_compact" :
+ chan->priv->id,
+ chan->priv->header_type == 1 ? "struct event_header_compact" :
"struct event_header_large");
if (ret)
goto end;
- if (chan->ctx) {
+ if (chan->priv->ctx) {
ret = lttng_metadata_printf(session,
" event.context := struct {\n");
if (ret)
goto end;
}
- ret = _lttng_context_metadata_statedump(session, chan->ctx);
+ ret = _lttng_context_metadata_statedump(session, chan->priv->ctx);
if (ret)
goto end;
- if (chan->ctx) {
+ if (chan->priv->ctx) {
ret = lttng_metadata_printf(session,
" };\n");
if (ret)
ret = lttng_metadata_printf(session,
"};\n\n");
- chan->metadata_dumped = 1;
+ chan->priv->metadata_dumped = 1;
end:
lttng_metadata_end(session);
return ret;
* Must be called with sessions_mutex held.
*/
static
-int _lttng_stream_packet_context_declare(struct lttng_session *session)
+int _lttng_stream_packet_context_declare(struct lttng_kernel_session *session)
{
return lttng_metadata_printf(session,
"struct packet_context {\n"
* Must be called with sessions_mutex held.
*/
static
-int _lttng_event_header_declare(struct lttng_session *session)
+int _lttng_event_header_declare(struct lttng_kernel_session *session)
{
return lttng_metadata_printf(session,
"struct event_header_compact {\n"
}
static
-int print_escaped_ctf_string(struct lttng_session *session, const char *string)
+int print_escaped_ctf_string(struct lttng_kernel_session *session, const char *string)
{
int ret = 0;
size_t i;
if (ret)
goto error;
/* We still print the current char */
- /* Fallthrough */
+ lttng_fallthrough;
default:
ret = lttng_metadata_printf(session, "%c", cur);
break;
}
static
-int print_metadata_escaped_field(struct lttng_session *session, const char *field,
+int print_metadata_escaped_field(struct lttng_kernel_session *session, const char *field,
const char *field_value)
{
int ret;
* Must be called with sessions_mutex held.
*/
static
-int _lttng_session_metadata_statedump(struct lttng_session *session)
+int _lttng_session_metadata_statedump(struct lttng_kernel_session *session)
{
- unsigned char *uuid_c = session->uuid.b;
+ unsigned char *uuid_c = session->priv->uuid.b;
unsigned char uuid_s[37], clock_uuid_s[BOOT_ID_LEN];
const char *product_uuid;
- struct lttng_channel *chan;
+ struct lttng_kernel_channel_buffer_private *chan_priv;
struct lttng_kernel_event_recorder_private *event_recorder_priv;
int ret = 0;
lttng_metadata_begin(session);
- if (session->metadata_dumped)
+ if (session->priv->metadata_dumped)
goto skip_session;
snprintf(uuid_s, sizeof(uuid_s),
if (ret)
goto end;
- ret = print_metadata_escaped_field(session, "trace_name", session->name);
+ ret = print_metadata_escaped_field(session, "trace_name", session->priv->name);
if (ret)
goto end;
ret = print_metadata_escaped_field(session, "trace_creation_datetime",
- session->creation_time);
+ session->priv->creation_time);
if (ret)
goto end;
goto end;
skip_session:
- list_for_each_entry(chan, &session->chan, list) {
- ret = _lttng_channel_metadata_statedump(session, chan);
+ list_for_each_entry(chan_priv, &session->priv->chan, node) {
+ ret = _lttng_channel_metadata_statedump(session, chan_priv->pub);
if (ret)
goto end;
}
- list_for_each_entry(event_recorder_priv, &session->events, node) {
+ list_for_each_entry(event_recorder_priv, &session->priv->events, node) {
ret = _lttng_event_metadata_statedump(session, event_recorder_priv->pub->chan,
event_recorder_priv->pub);
if (ret)
goto end;
}
- session->metadata_dumped = 1;
+ session->priv->metadata_dumped = 1;
end:
lttng_metadata_end(session);
return ret;
}
#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
-
static int __init lttng_events_init(void)
{
int ret;
#else
"");
#endif
+#ifdef CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM
+ printk(KERN_NOTICE "LTTng: Experimental bitwise enum enabled.\n");
+#endif /* CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM */
return 0;
error_hotplug:
static void __exit lttng_events_exit(void)
{
- struct lttng_session *session, *tmpsession;
+ struct lttng_kernel_session_private *session_priv, *tmpsession_priv;
lttng_exit_cpu_hotplug();
lttng_logger_exit();
lttng_abi_exit();
- list_for_each_entry_safe(session, tmpsession, &sessions, list)
- lttng_session_destroy(session);
+ list_for_each_entry_safe(session_priv, tmpsession_priv, &sessions, list)
+ lttng_session_destroy(session_priv->pub);
kmem_cache_destroy(event_recorder_cache);
kmem_cache_destroy(event_recorder_private_cache);
kmem_cache_destroy(event_notifier_cache);
projects / lttng-modules.git / blobdiff