#include <linux/version.h>
#include <linux/tracepoint.h>
+#include <linux/module.h>
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,35))
#define kabi_2635_tracepoint_probe_register tracepoint_probe_register
#define kabi_2635_tracepoint_probe_unregister tracepoint_probe_unregister
-#define kabi_2635_tracepoint_probe_register_noupdate tracepoint_probe_register_noupdate
-#define kabi_2635_tracepoint_probe_unregister_noupdate tracepoint_probe_unregister_noupdate
#endif /* HAVE_KABI_2635_TRACEPOINT */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0))
+
+#include <lttng-tracepoint.h>
+
+#define lttng_wrapper_tracepoint_probe_register lttng_tracepoint_probe_register
+#define lttng_wrapper_tracepoint_probe_unregister lttng_tracepoint_probe_unregister
+
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
+
+#define lttng_wrapper_tracepoint_probe_register kabi_2635_tracepoint_probe_register
+#define lttng_wrapper_tracepoint_probe_unregister kabi_2635_tracepoint_probe_unregister
+
+static inline
+int lttng_tracepoint_init(void)
+{
+ return 0;
+}
+
+static inline
+void lttng_tracepoint_exit(void)
+{
+}
+
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,15,0)) */
+
+#ifdef CONFIG_MODULE_SIG
+
+#include <linux/kallsyms.h>
+#include <wrapper/kallsyms.h>
+
+static inline
+int wrapper_tracepoint_module_notify(struct notifier_block *nb,
+ unsigned long val, struct module *mod)
+{
+ int (*tracepoint_module_notify_sym)(struct notifier_block *nb,
+ unsigned long val, struct module *mod);
+
+ tracepoint_module_notify_sym =
+ (void *) kallsyms_lookup_funcptr("tracepoint_module_notify");
+ if (tracepoint_module_notify_sym) {
+ return tracepoint_module_notify_sym(nb, val, mod);
+ } else {
+ printk_once(KERN_WARNING "LTTng: tracepoint_module_notify symbol lookup failed. It probably means you kernel don't need this work-around. Please consider upgrading LTTng modules to make this warning go away.\n");
+ return -ENOSYS;
+ }
+}
+
+#endif /* CONFIG_MODULE_SIG */
+
+#if defined(CONFIG_MODULE_SIG) && defined(MODULE)
+
+static inline
+int wrapper_lttng_fixup_sig(struct module *mod)
+{
+ int ret = 0;
+
+ /*
+ * This is for module.c confusing force loaded modules with
+ * unsigned modules.
+ */
+ if (!THIS_MODULE->sig_ok &&
+ THIS_MODULE->taints & (1U << TAINT_FORCED_MODULE)) {
+ THIS_MODULE->taints &= ~(1U << TAINT_FORCED_MODULE);
+ ret = wrapper_tracepoint_module_notify(NULL,
+ MODULE_STATE_COMING, mod);
+ THIS_MODULE->taints |= (1U << TAINT_FORCED_MODULE);
+ }
+ return ret;
+}
+
+#else /* #if defined(CONFIG_MODULE_SIG) && defined(MODULE) */
+
+static inline
+int wrapper_lttng_fixup_sig(struct module *mod)
+{
+ return 0;
+}
+
+#endif /*#else #if defined(CONFIG_MODULE_SIG) && defined(MODULE) */
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0))
+static inline struct tracepoint *lttng_tracepoint_ptr_deref(tracepoint_ptr_t *p)
+{
+ return tracepoint_ptr_deref(p);
+}
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0)) */
+static inline struct tracepoint *lttng_tracepoint_ptr_deref(struct tracepoint * const *p)
+{
+ return *p;
+}
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,19,0)) */
+
#endif /* _LTTNG_WRAPPER_TRACEPOINT_H */