Fix: system call instrumentation build failure on v3.0-v3.10 RT kernel

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

diff --git a/src/lttng-syscalls.c b/src/lttng-syscalls.c
index d5e5df4a9bb9575d6417667ffffe9de2aa75ada2..9cd11ea6e9b8394f77354be40cc320dd9e230a92 100644 (file)
--- a/src/lttng-syscalls.c
+++ b/src/lttng-syscalls.c
@@ -66,30 +66,6 @@ enum sc_type {
 void syscall_entry_event_probe(void *__data, struct pt_regs *regs, long id);
 void syscall_exit_event_probe(void *__data, struct pt_regs *regs, long ret);
 
-/*
- * Forward declarations for old kernels.
- */
-struct mmsghdr;
-struct rlimit64;
-struct oldold_utsname;
-struct old_utsname;
-struct sel_arg_struct;
-struct mmap_arg_struct;
-struct file_handle;
-struct user_msghdr;
-
-/*
- * Forward declaration for kernels >= 5.6
- */
-struct timex;
-struct timeval;
-struct itimerval;
-struct itimerspec;
-
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,6,0))
-typedef __kernel_old_time_t time_t;
-#endif
-
 #ifdef IA32_NR_syscalls
 #define NR_compat_syscalls IA32_NR_syscalls
 #else
@@ -840,7 +816,7 @@ int lttng_event_enabler_create_syscall_events_if_missing(struct lttng_event_enab
 
        lttng_syscall_event_enabler_create_matching_events(syscall_event_enabler);
 
-       return ret;
+       return 0;
 }
 
 int lttng_syscalls_unregister_syscall_table(struct lttng_kernel_syscall_table *syscall_table)
@@ -975,7 +951,7 @@ int lttng_syscall_filter_enable_event(struct lttng_kernel_event_common *event)
        struct lttng_kernel_syscall_table *syscall_table = get_syscall_table_from_event(event);
        unsigned int syscall_id = event->priv->u.syscall.syscall_id;
        struct hlist_head *dispatch_list;
-       int ret;
+       int ret = 0;
 
        WARN_ON_ONCE(event->priv->instrumentation != LTTNG_KERNEL_ABI_SYSCALL);