Merge branch 'tracing/core' into perf/core

[safe/jmp/linux-2.6] / arch / s390 / kernel / ftrace.c

diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c
index f5fe34d..5a82bc6 100644 (file)
--- a/arch/s390/kernel/ftrace.c
+++ b/arch/s390/kernel/ftrace.c
@@ -203,73 +203,10 @@ out:
 
 #ifdef CONFIG_FTRACE_SYSCALLS
 
-extern unsigned long __start_syscalls_metadata[];
-extern unsigned long __stop_syscalls_metadata[];
 extern unsigned int sys_call_table[];
 
-static struct syscall_metadata **syscalls_metadata;
-
-struct syscall_metadata *syscall_nr_to_meta(int nr)
-{
-       if (!syscalls_metadata || nr >= NR_syscalls || nr < 0)
-               return NULL;
-
-       return syscalls_metadata[nr];
-}
-
-int syscall_name_to_nr(char *name)
-{
-       int i;
-
-       if (!syscalls_metadata)
-               return -1;
-       for (i = 0; i < NR_syscalls; i++)
-               if (syscalls_metadata[i])
-                       if (!strcmp(syscalls_metadata[i]->name, name))
-                               return i;
-       return -1;
-}
-
-void set_syscall_enter_id(int num, int id)
-{
-       syscalls_metadata[num]->enter_id = id;
-}
-
-void set_syscall_exit_id(int num, int id)
+unsigned long __init arch_syscall_addr(int nr)
 {
-       syscalls_metadata[num]->exit_id = id;
-}
-
-static struct syscall_metadata *find_syscall_meta(unsigned long syscall)
-{
-       struct syscall_metadata *start;
-       struct syscall_metadata *stop;
-       char str[KSYM_SYMBOL_LEN];
-
-       start = (struct syscall_metadata *)__start_syscalls_metadata;
-       stop = (struct syscall_metadata *)__stop_syscalls_metadata;
-       kallsyms_lookup(syscall, NULL, NULL, NULL, str);
-
-       for ( ; start < stop; start++) {
-               if (start->name && !strcmp(start->name + 3, str + 3))
-                       return start;
-       }
-       return NULL;
-}
-
-static int __init arch_init_ftrace_syscalls(void)
-{
-       struct syscall_metadata *meta;
-       int i;
-       syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) * NR_syscalls,
-                                   GFP_KERNEL);
-       if (!syscalls_metadata)
-               return -ENOMEM;
-       for (i = 0; i < NR_syscalls; i++) {
-               meta = find_syscall_meta((unsigned long)sys_call_table[i]);
-               syscalls_metadata[i] = meta;
-       }
-       return 0;
+       return (unsigned long)sys_call_table[nr];
 }
-arch_initcall(arch_init_ftrace_syscalls);
 #endif