On Sat, Aug 31, 2013 at 01:11:20AM -0400, Steven Rostedt wrote: > From: "Steven Rostedt (Red Hat)" <[email protected]> > > Since none of the internal ftrace function tracing uses RCU in > their callbacks, it is OK to set the global_ops (the one that > they all use) to RCU safe. > > Cc: Jiri Olsa <[email protected]> > Cc: Paul E. McKenney <[email protected]> > Signed-off-by: Steven Rostedt <[email protected]>
Acked-by: Paul E. McKenney <[email protected]> > --- > kernel/trace/ftrace.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c > index d61f431..a45deaa 100644 > --- a/kernel/trace/ftrace.c > +++ b/kernel/trace/ftrace.c > @@ -1146,7 +1146,9 @@ static struct ftrace_ops global_ops = { > .func = ftrace_stub, > .notrace_hash = EMPTY_HASH, > .filter_hash = EMPTY_HASH, > - .flags = FTRACE_OPS_FL_RECURSION_SAFE | > FTRACE_OPS_FL_INITIALIZED, > + .flags = FTRACE_OPS_FL_RECURSION_SAFE | > + FTRACE_OPS_FL_INITIALIZED | > + FTRACE_OPS_FL_RCU_SAFE, > INIT_REGEX_LOCK(global_ops) > }; > > -- > 1.7.10.4 > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
