Drop support for kernels < 4.4 from 'wrapper/tracepoint.h'

[lttng-modules.git] / include / wrapper / tracepoint.h

diff --git a/include/wrapper/tracepoint.h b/include/wrapper/tracepoint.h
index 10c9fce6e5eebb97997d4271ed282c211367a1a1..7ed1069d9e2f2c32037451a431d186d712c72300 100644 (file)
--- a/include/wrapper/tracepoint.h
+++ b/include/wrapper/tracepoint.h
@@ -11,6 +11,7 @@
 #define _LTTNG_WRAPPER_TRACEPOINT_H
 
 #include <lttng/kernel-version.h>
+#include <lttng/tracepoint.h>
 #include <linux/tracepoint.h>
 #include <linux/module.h>
 
@@ -22,97 +23,6 @@
        DEFINE_TRACE(name)
 #endif
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_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 (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,15,0)) */
-
-#define lttng_wrapper_tracepoint_probe_register tracepoint_probe_register
-#define lttng_wrapper_tracepoint_probe_unregister tracepoint_probe_unregister
-
-static inline
-int lttng_tracepoint_init(void)
-{
-       return 0;
-}
-
-static inline
-void lttng_tracepoint_exit(void)
-{
-}
-
-#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(3,15,0)) */
-
-#if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,15,0) && defined(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;
-       }
-}
-
-/*
- * No canary for 'tracepoint_module_notify()', it's only defined in 'kernel/tracepoint.c'.
- *
- * static inline
- * int __canary__tracepoint_module_notify(struct notifier_block *nb,
- *             unsigned long val, struct module *mod)
- * {
- *     return tracepoint_module_notify(nb, val, mod);
- * }
- */
-
-#endif /* #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,15,0) && defined(CONFIG_MODULE_SIG)) */
-
-#if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,15,0) && 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 (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,15,0) && defined(CONFIG_MODULE_SIG) && defined(MODULE)) */
-
-static inline
-int wrapper_lttng_fixup_sig(struct module *mod)
-{
-       return 0;
-}
-
-#endif /* #else #if (LTTNG_LINUX_VERSION_CODE < LTTNG_KERNEL_VERSION(3,15,0) && defined(CONFIG_MODULE_SIG) && defined(MODULE)) */
-
 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,19,0))
 static inline struct tracepoint *lttng_tracepoint_ptr_deref(tracepoint_ptr_t *p)
 {