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Subject[PATCH 05/10] tracing/events: put TP_fast_assign into braces
From: Li Zefan <lizf@cn.fujitsu.com>

Currently TP_fast_assign has a limitation that we can't define local
variables in it.

Here's one use case when we introduce __dynamic_array():

TP_fast_assign(
type *p = __get_dynamic_array(item);

foo(p);
bar(p);
),

[ Impact: allow defining local variables in TP_fast_assign ]

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
LKML-Reference: <4A2384B1.90100@cn.fujitsu.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
include/trace/ftrace.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 9276ec4..ee92682 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -471,7 +471,7 @@ static void ftrace_raw_event_##call(proto) \
return; \
entry = ring_buffer_event_data(event); \
\
- assign; \
+ { assign; } \
\
if (!filter_current_check_discard(event_call, entry, event)) \
trace_nowake_buffer_unlock_commit(event, irq_flags, pc); \
--
1.6.3.1
--


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