Refactoring/fix: syscall table unregister/destroy

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

diff --git a/src/lttng-syscalls.c b/src/lttng-syscalls.c
index 33f05ea358b13a45e0dbd115acfd8f666b5f3b1b..3bbb266c3bf118527d5914db5fe8333025baa941 100644 (file)
--- a/src/lttng-syscalls.c
+++ b/src/lttng-syscalls.c
@@ -1108,47 +1108,8 @@ end:
        return ret;
 }
 
-/*
- * Unregister the syscall event_notifier probes from the callsites.
- */
-int lttng_syscalls_unregister_event_notifier_group(
-               struct lttng_event_notifier_group *event_notifier_group)
-{
-       struct lttng_kernel_syscall_table *syscall_table = &event_notifier_group->syscall_table;
-       int ret;
-
-       /*
-        * Only register the event_notifier probe on the `sys_enter` callsite for now.
-        * At the moment, we don't think it's desirable to have one fired
-        * event_notifier for the entry and one for the exit of a syscall.
-        */
-       if (syscall_table->sys_enter_registered) {
-               ret = lttng_wrapper_tracepoint_probe_unregister("sys_enter",
-                               (void *) syscall_entry_event_probe, syscall_table);
-               if (ret)
-                       return ret;
-               syscall_table->sys_enter_registered = 0;
-       }
-       if (syscall_table->sys_exit_registered) {
-               ret = lttng_wrapper_tracepoint_probe_unregister("sys_exit",
-                               (void *) syscall_exit_event_probe, syscall_table);
-               if (ret)
-                       return ret;
-               syscall_table->sys_enter_registered = 0;
-       }
-
-       kfree(syscall_table->syscall_dispatch);
-       kfree(syscall_table->syscall_exit_dispatch);
-#ifdef CONFIG_COMPAT
-       kfree(syscall_table->compat_syscall_dispatch);
-       kfree(syscall_table->compat_syscall_exit_dispatch);
-#endif
-       return 0;
-}
-
-int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan)
+int lttng_syscalls_unregister_syscall_table(struct lttng_kernel_syscall_table *syscall_table)
 {
-       struct lttng_kernel_syscall_table *syscall_table = &chan->priv->parent.syscall_table;
        int ret;
 
        if (!syscall_table->syscall_dispatch)
@@ -1170,10 +1131,8 @@ int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan)
        return 0;
 }
 
-int lttng_syscalls_destroy_channel(struct lttng_kernel_channel_buffer *chan)
+int lttng_syscalls_destroy_syscall_table(struct lttng_kernel_syscall_table *syscall_table)
 {
-       struct lttng_kernel_syscall_table *syscall_table = &chan->priv->parent.syscall_table;
-
        kfree(syscall_table->syscall_dispatch);
        kfree(syscall_table->syscall_exit_dispatch);
 #ifdef CONFIG_COMPAT