| Date | Tue, 03 Sep 2013 17:16:17 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [RFC][PATCH 17/18 v2] ftrace/cpuidle/x86: Mark functions that are RCU unsafe |
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On 08/30/2013 10:11 PM, Steven Rostedt wrote: > From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org> > > 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: H. Peter Anvin <hpa@zytor.com> > Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
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