Re: [RFC][PATCH 15/18 v2] ftrace/rcu: Mark functions that are RCUunsafe
From: Steven Rostedt
Date: Sat Aug 31 2013 - 16:43:35 EST
On Sat, 2013-08-31 at 13:00 -0700, Paul E. McKenney wrote:
> On Sat, Aug 31, 2013 at 01:11:32AM -0400, Steven Rostedt wrote:
> > From: "Steven Rostedt (Red Hat)" <rostedt@xxxxxxxxxxx>
> >
> > Some callbacks of the function tracer use rcu_read_lock(). This means that
> > there's places that can not be traced because RCU is not tracking the CPU
> > for various reasons (like NO_HZ_FULL and coming back from userspace).
> >
> > Thes functions need to be marked so that callbacks that use RCU do not
> > trace them.
> >
> > Cc: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
> > Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
>
> Reviewed-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
>
> Please let me know if you would like me to take this one. If I don't
> hear otherwise, I will assume that you are pushing it.
>
These I rather take, as they are all dependent on the previous changes.
Thanks!
-- Steve
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