Introduce lazy system call event creation

[lttng-modules.git] / src / lttng-events.c

diff --git a/src/lttng-events.c b/src/lttng-events.c
index 9f683db18f2274badbaeb37288d4843fc7c246e0..3f9d0f9a91fdf7b50b7a647d1aea55413d8412b0 100644 (file)
--- a/src/lttng-events.c
+++ b/src/lttng-events.c
@@ -337,7 +337,7 @@ void lttng_session_destroy(struct lttng_session *session)
        mutex_lock(&sessions_mutex);
        WRITE_ONCE(session->active, 0);
        list_for_each_entry(chan, &session->chan, list) {
-               ret = lttng_syscalls_unregister_event(chan);
+               ret = lttng_syscalls_unregister_channel(chan);
                WARN_ON(ret);
        }
        list_for_each_entry(event, &session->events, list) {
@@ -386,7 +386,7 @@ void lttng_event_notifier_group_destroy(
 
        mutex_lock(&sessions_mutex);
 
-       ret = lttng_syscalls_unregister_event_notifier(event_notifier_group);
+       ret = lttng_syscalls_unregister_event_notifier_group(event_notifier_group);
        WARN_ON(ret);
 
        list_for_each_entry_safe(event_notifier, tmpevent_notifier,
@@ -2065,7 +2065,7 @@ void lttng_create_syscall_event_if_missing(struct lttng_event_enabler *event_ena
 {
        int ret;
 
-       ret = lttng_syscalls_register_event(event_enabler->chan, NULL);
+       ret = lttng_syscalls_register_event(event_enabler, NULL);
        WARN_ON_ONCE(ret);
 }
 
@@ -2115,14 +2115,17 @@ int lttng_event_enabler_ref_events(struct lttng_event_enabler *event_enabler)
        struct lttng_event *event;
 
        if (base_enabler->event_param.instrumentation == LTTNG_KERNEL_SYSCALL &&
-                       base_enabler->event_param.u.syscall.entryexit == LTTNG_KERNEL_SYSCALL_ENTRYEXIT &&
                        base_enabler->event_param.u.syscall.abi == LTTNG_KERNEL_SYSCALL_ABI_ALL &&
                        base_enabler->event_param.u.syscall.match == LTTNG_KERNEL_SYSCALL_MATCH_NAME &&
                        !strcmp(base_enabler->event_param.name, "*")) {
-               if (base_enabler->enabled)
-                       WRITE_ONCE(chan->syscall_all, 1);
-               else
-                       WRITE_ONCE(chan->syscall_all, 0);
+               int enabled = base_enabler->enabled;
+               enum lttng_kernel_syscall_entryexit entryexit = base_enabler->event_param.u.syscall.entryexit;
+
+               if (entryexit == LTTNG_KERNEL_SYSCALL_ENTRY || entryexit == LTTNG_KERNEL_SYSCALL_ENTRYEXIT)
+                       WRITE_ONCE(chan->syscall_all_entry, enabled);
+
+               if (entryexit == LTTNG_KERNEL_SYSCALL_EXIT || entryexit == LTTNG_KERNEL_SYSCALL_ENTRYEXIT)
+                       WRITE_ONCE(chan->syscall_all_exit, enabled);
        }
 
        /* First ensure that probe events are created for this enabler. */