Commit b725dfea authored by Mathieu Desnoyers's avatar Mathieu Desnoyers Committed by Steven Rostedt

tracepoint: Fix sparse warnings in tracepoint.c

Fix the following sparse warnings:

  CHECK   kernel/tracepoint.c
kernel/tracepoint.c:184:18: warning: incorrect type in assignment (different address spaces)
kernel/tracepoint.c:184:18:    expected struct tracepoint_func *tp_funcs
kernel/tracepoint.c:184:18:    got struct tracepoint_func [noderef] <asn:4>*funcs
kernel/tracepoint.c:216:18: warning: incorrect type in assignment (different address spaces)
kernel/tracepoint.c:216:18:    expected struct tracepoint_func *tp_funcs
kernel/tracepoint.c:216:18:    got struct tracepoint_func [noderef] <asn:4>*funcs
kernel/tracepoint.c:392:24: error: return expression in void function
  CC      kernel/tracepoint.o
kernel/tracepoint.c: In function tracepoint_module_going:
kernel/tracepoint.c:491:6: warning: symbol 'syscall_regfunc' was not declared. Should it be static?
kernel/tracepoint.c:508:6: warning: symbol 'syscall_unregfunc' was not declared. Should it be static?

Link: http://lkml.kernel.org/r/1397049883-28692-1-git-send-email-mathieu.desnoyers@efficios.comSigned-off-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent eb7d035c
......@@ -80,6 +80,11 @@ static inline void tracepoint_synchronize_unregister(void)
synchronize_sched();
}
#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
extern void syscall_regfunc(void);
extern void syscall_unregfunc(void);
#endif /* CONFIG_HAVE_SYSCALL_TRACEPOINTS */
#define PARAMS(args...) args
#endif /* _LINUX_TRACEPOINT_H */
......
......@@ -13,9 +13,6 @@
#ifdef CONFIG_HAVE_SYSCALL_TRACEPOINTS
extern void syscall_regfunc(void);
extern void syscall_unregfunc(void);
TRACE_EVENT_FN(sys_enter,
TP_PROTO(struct pt_regs *regs, long id),
......
......@@ -181,7 +181,8 @@ static int tracepoint_add_func(struct tracepoint *tp,
if (tp->regfunc && !static_key_enabled(&tp->key))
tp->regfunc();
tp_funcs = tp->funcs;
tp_funcs = rcu_dereference_protected(tp->funcs,
lockdep_is_held(&tracepoints_mutex));
old = func_add(&tp_funcs, func);
if (IS_ERR(old)) {
WARN_ON_ONCE(1);
......@@ -213,7 +214,8 @@ static int tracepoint_remove_func(struct tracepoint *tp,
{
struct tracepoint_func *old, *tp_funcs;
tp_funcs = tp->funcs;
tp_funcs = rcu_dereference_protected(tp->funcs,
lockdep_is_held(&tracepoints_mutex));
old = func_remove(&tp_funcs, func);
if (IS_ERR(old)) {
WARN_ON_ONCE(1);
......
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