trace_events_filter: Use rcu_assign_pointer() when setting ftrace_event_call->filter
authorTejun Heo <tj@kernel.org>
Wed, 23 Nov 2011 16:49:49 +0000 (08:49 -0800)
committerSteven Rostedt <rostedt@goodmis.org>
Fri, 2 Dec 2011 03:16:47 +0000 (22:16 -0500)
commitd3d9acf646679c1981032b0985b386d12fccc60c
tree68df9e100ae7304a1384160b5d1b068241f4d1fe
parent4a1dba72384193753e44e15d9d05a50be6587271
trace_events_filter: Use rcu_assign_pointer() when setting ftrace_event_call->filter

ftrace_event_call->filter is sched RCU protected but didn't use
rcu_assign_pointer().  Use it.

TODO: Add proper __rcu annotation to call->filter and all its users.

-v2: Use RCU_INIT_POINTER() for %NULL clearing as suggested by Eric.

Link: http://lkml.kernel.org/r/20111123164949.GA29639@google.com

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@kernel.org # (2.6.39+)
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
kernel/trace/trace_events_filter.c