Messages in this thread | | | Subject | Re: [PATCH 4/9] ftrace: Add enable/disable ftrace_ops control interface | From | Peter Zijlstra <> | Date | Mon, 28 Nov 2011 21:05:41 +0100 |
| |
On Mon, 2011-11-28 at 21:02 +0100, Peter Zijlstra wrote: > On Mon, 2011-11-28 at 14:26 -0500, Steven Rostedt wrote: > > > > Are jump labels safe in NMI context yet? If not, this will need to wait > > till we make it so. > > I don't think they are, we currently very much rely on that > stop_machine() crap. NMIs can go straight through that. > > I think you can make it work with the stop_machine()-less approach, > because then the NMI will trap on the INT3 which will wait for > completion, sync and resume the NMI.
Note that this of course precludes ever using jump_labels from do_int3 handlers ;-)
| |