From: Steven Rostedt <rost...@goodmis.org>
There are a few generic events that may only be used by modules. They are
defined and then set with EXPORT_TRACEPOINT*(). Mark events that are
exported as being used, even though they still waste memory in the kernel
proper.
Signed-off-by: Steven Rostedt (Google) <rost...@goodmis.org>
---
include/linux/tracepoint.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 71d2e085c49e..ec6827d00d79 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -223,8 +223,8 @@ static inline struct tracepoint
*tracepoint_ptr_deref(tracepoint_ptr_t *p)
#ifdef CONFIG_TRACEPOINT_WARN_ON_UNUSED
# define TRACEPOINT_CHECK(name)
\
- static const char __used __section("__tracepoint_check")
__trace_check[] = \
- #name;
+ static const char __used __section("__tracepoint_check") \
+ __trace_check_##name[] = #name;
#else
# define TRACEPOINT_CHECK(tname)
#endif
@@ -381,10 +381,12 @@ static inline struct tracepoint
*tracepoint_ptr_deref(tracepoint_ptr_t *p)
__DEFINE_TRACE_EXT(_name, NULL, PARAMS(_proto), PARAMS(_args));
#define EXPORT_TRACEPOINT_SYMBOL_GPL(name) \
+ TRACEPOINT_CHECK(name) \
EXPORT_SYMBOL_GPL(__tracepoint_##name); \
EXPORT_SYMBOL_GPL(__traceiter_##name); \
EXPORT_STATIC_CALL_GPL(tp_func_##name)
#define EXPORT_TRACEPOINT_SYMBOL(name) \
+ TRACEPOINT_CHECK(name) \
EXPORT_SYMBOL(__tracepoint_##name); \
EXPORT_SYMBOL(__traceiter_##name); \
EXPORT_STATIC_CALL(tp_func_##name)
--
2.50.1
