+++ /dev/null
-/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
- *
- * wrapper/tracepoint.h
- *
- * wrapper around DECLARE_EVENT_CLASS.
- *
- * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#ifndef _LTTNG_WRAPPER_TRACEPOINT_H
-#define _LTTNG_WRAPPER_TRACEPOINT_H
-
-#include <linux/version.h>
-#include <linux/tracepoint.h>
-#include <linux/module.h>
-
-#ifndef HAVE_KABI_2635_TRACEPOINT
-
-#define kabi_2635_tracepoint_probe_register tracepoint_probe_register
-#define kabi_2635_tracepoint_probe_unregister tracepoint_probe_unregister
-
-#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)) */
-
-#if (LINUX_VERSION_CODE < 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;
- }
-}
-
-#endif /* #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,15,0) && defined(CONFIG_MODULE_SIG)) */
-
-#if (LINUX_VERSION_CODE < 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 (LINUX_VERSION_CODE < 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 (LINUX_VERSION_CODE < KERNEL_VERSION(3,15,0) && 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 */