#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 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_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_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_kernel_channel_buffer *chan);
-static int _lttng_event_unregister(struct lttng_kernel_event_recorder *event);
+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_kernel_session *session,
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();
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_priv, &session->priv->chan, node) {
- ret = lttng_syscalls_unregister_channel(chan_priv->pub);
+ 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) {
- ret = _lttng_event_unregister(event_recorder_priv->pub);
+ 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_priv, &session->priv->chan, node) {
- ret = lttng_syscalls_destroy_event(chan_priv->pub);
+ ret = lttng_syscalls_destroy_syscall_table(&chan_priv->parent.syscall_table);
WARN_ON(ret);
}
- list_for_each_entry_safe(event_enabler, tmp_event_enabler,
+ list_for_each_entry_safe(event_recorder_enabler, tmp_event_recorder_enabler,
&session->priv->enablers_head, node)
- lttng_event_enabler_destroy(event_enabler);
+ 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_priv, tmpchan_priv, &session->priv->chan, node) {
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)
return ret;
}
-int lttng_channel_enable(struct lttng_kernel_channel_buffer *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->priv->channel_type == METADATA_CHANNEL) {
+ if (is_channel_buffer_metadata(channel)) {
ret = -EPERM;
goto end;
}
- if (channel->parent.enabled) {
+ if (channel->enabled) {
ret = -EEXIST;
goto end;
}
/* Set transient enabler state to "enabled" */
- channel->priv->parent.tstate = 1;
- lttng_session_sync_event_enablers(channel->parent.session);
+ channel->priv->tstate = 1;
+ lttng_session_sync_event_enablers(channel->session);
/* Set atomically the state to "enabled" */
- WRITE_ONCE(channel->parent.enabled, 1);
+ WRITE_ONCE(channel->enabled, 1);
end:
mutex_unlock(&sessions_mutex);
return ret;
}
-int lttng_channel_disable(struct lttng_kernel_channel_buffer *channel)
+int lttng_channel_disable(struct lttng_kernel_channel_common *channel)
{
int ret = 0;
mutex_lock(&sessions_mutex);
- if (channel->priv->channel_type == METADATA_CHANNEL) {
+ if (is_channel_buffer_metadata(channel)) {
ret = -EPERM;
goto end;
}
- if (!channel->parent.enabled) {
+ if (!channel->enabled) {
ret = -EEXIST;
goto end;
}
/* Set atomically the state to "disabled" */
- WRITE_ONCE(channel->parent.enabled, 0);
+ WRITE_ONCE(channel->enabled, 0);
/* Set transient enabler state to "enabled" */
- channel->priv->parent.tstate = 0;
- lttng_session_sync_event_enablers(channel->parent.session);
+ channel->priv->tstate = 0;
+ lttng_session_sync_event_enablers(channel->session);
end:
mutex_unlock(&sessions_mutex);
return ret;
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, 1);
break;
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;
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;
ret = lttng_kretprobes_event_enable_state(event, 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);
ret = -EINVAL;
return ret;
}
-struct lttng_kernel_channel_buffer *lttng_channel_create(struct lttng_kernel_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,
* 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_kernel_channel_buffer *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_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;
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;
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;
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;
*/
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_kernel_channel_buffer *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;
case LTTNG_KERNEL_ABI_TRACEPOINT:
ret = lttng_wrapper_tracepoint_probe_register(desc->event_kname,
desc->tp_class->probe_callback,
- event_recorder);
+ &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;
case LTTNG_KERNEL_ABI_TRACEPOINT:
ret = lttng_wrapper_tracepoint_probe_unregister(event_priv->desc->event_kname,
event_priv->desc->tp_class->probe_callback,
- event_recorder);
+ &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);
}
case LTTNG_KERNEL_ABI_TRACEPOINT:
ret = lttng_wrapper_tracepoint_probe_register(desc->event_kname,
desc->tp_class->probe_callback,
- event_notifier);
+ &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);
}
case LTTNG_KERNEL_ABI_TRACEPOINT:
ret = lttng_wrapper_tracepoint_probe_unregister(event_notifier->priv->parent.desc->event_kname,
event_notifier->priv->parent.desc->tp_class->probe_callback,
- event_notifier);
+ &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);
}
}
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_kernel_session *session = event_enabler->chan->parent.session;
struct lttng_kernel_probe_desc *probe_desc;
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;
/*
* 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_kernel_channel_buffer *chan = event_enabler->chan;
struct lttng_kernel_session *session = event_enabler->chan->parent.session;
- struct lttng_enabler *base_enabler = lttng_event_enabler_as_enabler(event_enabler);
+ 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->priv->parent.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->priv->parent.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. */
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);
}
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_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->parent.session->priv->enablers_head);
- lttng_session_lazy_sync_event_enablers(event_enabler->chan->parent.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->parent.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->parent.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_kernel_bytecode_node *bytecode_node;
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->parent.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_kernel_bytecode_node *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_kernel_bytecode_node *bytecode_node;
- struct lttng_enabler *enabler =
+ struct lttng_event_enabler_common *enabler =
lttng_event_notifier_enabler_as_enabler(event_notifier_enabler);
uint32_t bytecode_len;
int ret;
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.
static
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->priv->enablers_head, node)
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,
* 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 */
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,
}
}
+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.
if (ret)
goto error;
/* We still print the current char */
- /* Fallthrough */
+ lttng_fallthrough;
default:
ret = lttng_metadata_printf(session, "%c", cur);
break;
projects / lttng-modules.git / blobdiff